TSK-1009: refactored project

history/taskana-simplehistory-provider/src/main/java/pro/taskana/simplehistory/TaskanaHistoryEngine.java

@@ -2,14 +2,12 @@ package pro.taskana.simplehistory;
 
 import pro.taskana.history.api.TaskanaHistory;
 
-/**
- * The TaskanaHistoryEngine represents an overall set of all needed services.
- */
+/** The TaskanaHistoryEngine represents an overall set of all needed services. */
 public interface TaskanaHistoryEngine {
-    /**
-     * The TaskanaHistory can be used for operations on all history events.
-     *
-     * @return the HistoryService
-     */
-    TaskanaHistory getTaskanaHistoryService();
+  /**
+   * The TaskanaHistory can be used for operations on all history events.
+   *
+   * @return the HistoryService
+   */
+  TaskanaHistory getTaskanaHistoryService();
 }

history/taskana-simplehistory-provider/src/main/java/pro/taskana/simplehistory/configuration/DbSchemaCreator.java

@@ -10,73 +10,70 @@ import java.io.StringWriter;
 import java.nio.charset.StandardCharsets;
 import java.sql.Connection;
 import java.sql.SQLException;
-
 import javax.sql.DataSource;
-
 import org.apache.ibatis.jdbc.ScriptRunner;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
-/**
- * Create the schema for the taskana history.
- */
+/** Create the schema for the taskana history. */
 public class DbSchemaCreator {
 
-    private static final Logger LOGGER = LoggerFactory.getLogger(DbSchemaCreator.class);
-    private static final String DB_SCHEMA = "/sql/taskana-history-schema.sql";
-    private DataSource dataSource;
-    private String schemaName;
-    private StringWriter outWriter = new StringWriter();
-    private PrintWriter logWriter = new PrintWriter(outWriter);
-    private StringWriter errorWriter = new StringWriter();
-    private PrintWriter errorLogWriter = new PrintWriter(errorWriter);
+  private static final Logger LOGGER = LoggerFactory.getLogger(DbSchemaCreator.class);
+  private static final String DB_SCHEMA = "/sql/taskana-history-schema.sql";
+  private DataSource dataSource;
+  private String schemaName;
+  private StringWriter outWriter = new StringWriter();
+  private PrintWriter logWriter = new PrintWriter(outWriter);
+  private StringWriter errorWriter = new StringWriter();
+  private PrintWriter errorLogWriter = new PrintWriter(errorWriter);
 
-    public DbSchemaCreator(DataSource dataSource, String schema) throws SQLException {
-        this.dataSource = dataSource;
-        this.schemaName = schema;
+  public DbSchemaCreator(DataSource dataSource, String schema) throws SQLException {
+    this.dataSource = dataSource;
+    this.schemaName = schema;
+  }
+
+  /**
+   * Run all db scripts.
+   *
+   * @throws SQLException will be thrown if there will be some incorrect SQL statements invoked.
+   */
+  public void run() throws SQLException {
+    Connection connection = dataSource.getConnection();
+    connection.setSchema(schemaName);
+    ScriptRunner runner = new ScriptRunner(connection);
+    runner.setStopOnError(true);
+    runner.setLogWriter(logWriter);
+    runner.setErrorLogWriter(errorLogWriter);
+    try {
+      InputStream resourceAsStream = this.getClass().getResourceAsStream(DB_SCHEMA);
+      BufferedReader reader =
+          new BufferedReader(new InputStreamReader(resourceAsStream, StandardCharsets.UTF_8));
+      runner.runScript(getSqlWithSchemaNameParsed(reader));
+    } finally {
+      runner.closeConnection();
     }
-
-    /**
-     * Run all db scripts.
-     *
-     * @throws SQLException
-     *             will be thrown if there will be some incorrect SQL statements invoked.
-     */
-    public void run() throws SQLException {
-        Connection connection = dataSource.getConnection();
-        connection.setSchema(schemaName);
-        ScriptRunner runner = new ScriptRunner(connection);
-        runner.setStopOnError(true);
-        runner.setLogWriter(logWriter);
-        runner.setErrorLogWriter(errorLogWriter);
-        try {
-            InputStream resourceAsStream = this.getClass().getResourceAsStream(DB_SCHEMA);
-            BufferedReader reader = new BufferedReader(new InputStreamReader(resourceAsStream, StandardCharsets.UTF_8));
-            runner.runScript(getSqlWithSchemaNameParsed(reader));
-        } finally {
-            runner.closeConnection();
-        }
-        LOGGER.debug(outWriter.toString());
-        if (!errorWriter.toString().trim().isEmpty()) {
-            LOGGER.error(errorWriter.toString());
-        }
+    LOGGER.debug(outWriter.toString());
+    if (!errorWriter.toString().trim().isEmpty()) {
+      LOGGER.error(errorWriter.toString());
     }
+  }
 
-    private StringReader getSqlWithSchemaNameParsed(BufferedReader reader) {
-        StringBuilder content = new StringBuilder();
-        try {
-            String line = "";
-            while (line != null) {
-                line = reader.readLine();
-                if (line != null) {
-                    content.append(line.replaceAll("%schemaName%", schemaName)).append(System.lineSeparator());
-                }
-            }
-        } catch (IOException e) {
-            e.printStackTrace();
-            LOGGER.error("SchemaName sql parsing failed for schemaName {}", schemaName);
+  private StringReader getSqlWithSchemaNameParsed(BufferedReader reader) {
+    StringBuilder content = new StringBuilder();
+    try {
+      String line = "";
+      while (line != null) {
+        line = reader.readLine();
+        if (line != null) {
+          content
+              .append(line.replaceAll("%schemaName%", schemaName))
+              .append(System.lineSeparator());
         }
-        return new StringReader(content.toString());
+      }
+    } catch (IOException e) {
+      e.printStackTrace();
+      LOGGER.error("SchemaName sql parsing failed for schemaName {}", schemaName);
     }
-
+    return new StringReader(content.toString());
+  }
 }

history/taskana-simplehistory-provider/src/main/java/pro/taskana/simplehistory/impl/HistoryEventImpl.java

@@ -2,13 +2,10 @@ package pro.taskana.simplehistory.impl;
 
 import pro.taskana.history.api.TaskanaHistoryEvent;
 
-/**
- * This entity contains the most important information about a history event.
- */
+/** This entity contains the most important information about a history event. */
 public class HistoryEventImpl extends TaskanaHistoryEvent {
 
-    public HistoryEventImpl() {
-        super();
-    }
-
+  public HistoryEventImpl() {
+    super();
+  }
 }

history/taskana-simplehistory-provider/src/main/java/pro/taskana/simplehistory/impl/SimpleHistoryServiceImpl.java

@@ -2,7 +2,6 @@ package pro.taskana.simplehistory.impl;
 
 import java.sql.SQLException;
 import java.time.Instant;
-
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
@@ -13,51 +12,52 @@ import pro.taskana.simplehistory.impl.mappings.HistoryEventMapper;
 import pro.taskana.simplehistory.impl.mappings.HistoryQueryMapper;
 import pro.taskana.simplehistory.query.HistoryQuery;
 
-/**
- * This is the implementation of TaskanaHistory.
- */
+/** This is the implementation of TaskanaHistory. */
 public class SimpleHistoryServiceImpl implements TaskanaHistory {
 
-    private static final Logger LOGGER = LoggerFactory.getLogger(SimpleHistoryServiceImpl.class);
-    private TaskanaHistoryEngineImpl taskanaHistoryEngine;
-    private HistoryEventMapper historyEventMapper;
-    private HistoryQueryMapper historyQueryMapper;
-
-    @Override
-    public void initialize(TaskanaEngineConfiguration taskanaEngineConfiguration) {
-        try {
-            this.taskanaHistoryEngine = TaskanaHistoryEngineImpl.createTaskanaEngine(taskanaEngineConfiguration);
-            if (LOGGER.isDebugEnabled()) {
-                LOGGER.debug("Simple history service implementation initialized with schemaName: {} ",
-                    taskanaEngineConfiguration.getSchemaName());
-            }
-        } catch (SQLException e) {
-            LOGGER.error("There was an error creating Taskana history engine", e);
-            e.printStackTrace();
-        }
-        this.historyEventMapper = this.taskanaHistoryEngine.getSqlSession().getMapper(HistoryEventMapper.class);
-        this.historyQueryMapper = this.taskanaHistoryEngine.getSqlSession().getMapper(HistoryQueryMapper.class);
+  private static final Logger LOGGER = LoggerFactory.getLogger(SimpleHistoryServiceImpl.class);
+  private TaskanaHistoryEngineImpl taskanaHistoryEngine;
+  private HistoryEventMapper historyEventMapper;
+  private HistoryQueryMapper historyQueryMapper;
 
+  @Override
+  public void initialize(TaskanaEngineConfiguration taskanaEngineConfiguration) {
+    try {
+      this.taskanaHistoryEngine =
+          TaskanaHistoryEngineImpl.createTaskanaEngine(taskanaEngineConfiguration);
+      if (LOGGER.isDebugEnabled()) {
+        LOGGER.debug(
+            "Simple history service implementation initialized with schemaName: {} ",
+            taskanaEngineConfiguration.getSchemaName());
+      }
+    } catch (SQLException e) {
+      LOGGER.error("There was an error creating Taskana history engine", e);
+      e.printStackTrace();
     }
+    this.historyEventMapper =
+        this.taskanaHistoryEngine.getSqlSession().getMapper(HistoryEventMapper.class);
+    this.historyQueryMapper =
+        this.taskanaHistoryEngine.getSqlSession().getMapper(HistoryQueryMapper.class);
+  }
 
-    @Override
-    public void create(TaskanaHistoryEvent event) {
-        try {
-            taskanaHistoryEngine.openConnection();
-            if (event.getCreated() == null) {
-                Instant now = Instant.now();
-                event.setCreated(now);
-            }
-            historyEventMapper.insert(event);
-        } catch (SQLException e) {
-            e.printStackTrace();
-        } finally {
-            taskanaHistoryEngine.returnConnection();
-            LOGGER.debug("exit from create(TaskanaHistoryEvent event). Returning object = {}.", event);
-        }
+  @Override
+  public void create(TaskanaHistoryEvent event) {
+    try {
+      taskanaHistoryEngine.openConnection();
+      if (event.getCreated() == null) {
+        Instant now = Instant.now();
+        event.setCreated(now);
+      }
+      historyEventMapper.insert(event);
+    } catch (SQLException e) {
+      e.printStackTrace();
+    } finally {
+      taskanaHistoryEngine.returnConnection();
+      LOGGER.debug("exit from create(TaskanaHistoryEvent event). Returning object = {}.", event);
     }
+  }
 
-    public HistoryQuery createHistoryQuery() {
-        return new HistoryQueryImpl(taskanaHistoryEngine, historyQueryMapper);
-    }
+  public HistoryQuery createHistoryQuery() {
+    return new HistoryQueryImpl(taskanaHistoryEngine, historyQueryMapper);
+  }
 }

history/taskana-simplehistory-provider/src/main/java/pro/taskana/simplehistory/impl/TaskanaHistoryEngineImpl.java

@@ -3,7 +3,6 @@ package pro.taskana.simplehistory.impl;
 import java.sql.SQLException;
 import java.util.ArrayDeque;
 import java.util.Deque;
-
 import org.apache.ibatis.mapping.Environment;
 import org.apache.ibatis.session.Configuration;
 import org.apache.ibatis.session.SqlSession;
@@ -21,155 +20,151 @@ import pro.taskana.simplehistory.configuration.DbSchemaCreator;
 import pro.taskana.simplehistory.impl.mappings.HistoryEventMapper;
 import pro.taskana.simplehistory.impl.mappings.HistoryQueryMapper;
 
-/**
- * This is the implementation of TaskanaHistoryEngine.
- */
+/** This is the implementation of TaskanaHistoryEngine. */
 public class TaskanaHistoryEngineImpl implements TaskanaHistoryEngine {
 
-    private static final String DEFAULT = "default";
+  protected static final ThreadLocal<Deque<SqlSessionManager>> SESSION_STACK = new ThreadLocal<>();
+  private static final String DEFAULT = "default";
+  TaskanaEngineConfiguration taskanaEngineConfiguration;
+  protected SqlSessionManager sessionManager;
+  protected TransactionFactory transactionFactory;
+  protected TaskanaHistory taskanaHistoryService;
 
-    TaskanaEngineConfiguration taskanaEngineConfiguration;
+  protected TaskanaHistoryEngineImpl(TaskanaEngineConfiguration taskanaEngineConfiguration)
+      throws SQLException {
+    this.taskanaEngineConfiguration = taskanaEngineConfiguration;
 
-    protected SqlSessionManager sessionManager;
+    createTransactionFactory(this.taskanaEngineConfiguration.getUseManagedTransactions());
+    this.sessionManager = createSqlSessionManager();
+    new DbSchemaCreator(
+            taskanaEngineConfiguration.getDatasource(), taskanaEngineConfiguration.getSchemaName())
+        .run();
+  }
 
-    protected TransactionFactory transactionFactory;
+  public static TaskanaHistoryEngineImpl createTaskanaEngine(
+      TaskanaEngineConfiguration taskanaEngineConfiguration) throws SQLException {
+    return new TaskanaHistoryEngineImpl(taskanaEngineConfiguration);
+  }
 
-    protected static final ThreadLocal<Deque<SqlSessionManager>> SESSION_STACK = new ThreadLocal<>();
-
-    protected TaskanaHistory taskanaHistoryService;
-
-    protected TaskanaHistoryEngineImpl(TaskanaEngineConfiguration taskanaEngineConfiguration) throws SQLException {
-        this.taskanaEngineConfiguration = taskanaEngineConfiguration;
-
-        createTransactionFactory(this.taskanaEngineConfiguration.getUseManagedTransactions());
-        this.sessionManager = createSqlSessionManager();
-        new DbSchemaCreator(taskanaEngineConfiguration.getDatasource(),
-            taskanaEngineConfiguration.getSchemaName()).
-            run();
+  @Override
+  public TaskanaHistory getTaskanaHistoryService() {
+    if (taskanaHistoryService == null) {
+      SimpleHistoryServiceImpl historyService = new SimpleHistoryServiceImpl();
+      historyService.initialize(taskanaEngineConfiguration);
+      this.taskanaHistoryService = historyService;
     }
+    return this.taskanaHistoryService;
+  }
 
-    public static TaskanaHistoryEngineImpl createTaskanaEngine(
-        TaskanaEngineConfiguration taskanaEngineConfiguration) throws SQLException {
-        return new TaskanaHistoryEngineImpl(taskanaEngineConfiguration);
+  /**
+   * Open the connection to the database. to be called at the begin of each Api call that accesses
+   * the database
+   *
+   * @throws SQLException thrown if the connection could not be opened.
+   */
+  void openConnection() throws SQLException {
+    initSqlSession();
+    this.sessionManager.getConnection().setSchema(taskanaEngineConfiguration.getSchemaName());
+  }
+
+  /**
+   * Returns the database connection into the pool. In the case of nested calls, simply pops the
+   * latest session from the session stack. Closes the connection if the session stack is empty. In
+   * mode AUTOCOMMIT commits before the connection is closed. To be called at the end of each Api
+   * call that accesses the database
+   */
+  void returnConnection() {
+    popSessionFromStack();
+    if (getSessionStack().isEmpty()
+        && this.sessionManager != null
+        && this.sessionManager.isManagedSessionStarted()) {
+      try {
+        this.sessionManager.commit();
+      } catch (Exception e) {
+      }
+      this.sessionManager.close();
     }
+  }
 
-    @Override
-    public TaskanaHistory getTaskanaHistoryService() {
-        if (taskanaHistoryService == null) {
-            SimpleHistoryServiceImpl historyService = new SimpleHistoryServiceImpl();
-            historyService.initialize(taskanaEngineConfiguration);
-            this.taskanaHistoryService = historyService;
-        }
-        return this.taskanaHistoryService;
+  /** Initializes the SqlSessionManager. */
+  void initSqlSession() {
+    this.sessionManager.startManagedSession();
+  }
+
+  /**
+   * retrieve the SqlSession used by taskana.
+   *
+   * @return the myBatis SqlSession object used by taskana
+   */
+  SqlSession getSqlSession() {
+    return this.sessionManager;
+  }
+
+  protected SqlSessionManager createSqlSessionManager() {
+    Environment environment =
+        new Environment(
+            DEFAULT, this.transactionFactory, taskanaEngineConfiguration.getDatasource());
+    Configuration configuration = new Configuration(environment);
+
+    // add mappers
+    configuration.addMapper(HistoryEventMapper.class);
+    configuration.addMapper(HistoryQueryMapper.class);
+    SqlSessionFactory localSessionFactory = new SqlSessionFactoryBuilder().build(configuration);
+    return SqlSessionManager.newInstance(localSessionFactory);
+  }
+
+  protected static void pushSessionToStack(SqlSessionManager session) {
+    getSessionStack().push(session);
+  }
+
+  protected static void popSessionFromStack() {
+    Deque<SqlSessionManager> stack = getSessionStack();
+    if (!stack.isEmpty()) {
+      stack.pop();
     }
+  }
 
-    /**
-     * Open the connection to the database. to be called at the begin of each Api call that accesses the database
-     *
-     * @throws SQLException
-     *             thrown if the connection could not be opened.
-     */
-    void openConnection() throws SQLException {
-        initSqlSession();
-        this.sessionManager.getConnection().setSchema(taskanaEngineConfiguration.getSchemaName());
+  /**
+   * With sessionStack, we maintain a Stack of SqlSessionManager objects on a per thread basis.
+   * SqlSessionManager is the MyBatis object that wraps database connections. The purpose of this
+   * stack is to keep track of nested calls. Each external API call is wrapped into
+   * taskanaEngineImpl.openConnection(); ..... taskanaEngineImpl.returnConnection(); calls. In order
+   * to avoid duplicate opening / closing of connections, we use the sessionStack in the following
+   * way: Each time, an openConnection call is received, we push the current sessionManager onto the
+   * stack. On the first call to openConnection, we call sessionManager.startManagedSession() to
+   * open a database connection. On each call to returnConnection() we pop one instance of
+   * sessionManager from the stack. When the stack becomes empty, we close the database connection
+   * by calling sessionManager.close()
+   *
+   * @return Stack of SqlSessionManager
+   */
+  protected static Deque<SqlSessionManager> getSessionStack() {
+    Deque<SqlSessionManager> stack = SESSION_STACK.get();
+    if (stack == null) {
+      stack = new ArrayDeque<>();
+      SESSION_STACK.set(stack);
     }
+    return stack;
+  }
 
-    /**
-     * Returns the database connection into the pool. In the case of nested calls, simply pops the latest session from
-     * the session stack. Closes the connection if the session stack is empty. In mode AUTOCOMMIT commits before the
-     * connection is closed. To be called at the end of each Api call that accesses the database
-     */
-    void returnConnection() {
-        popSessionFromStack();
-        if (getSessionStack().isEmpty()
-            && this.sessionManager != null && this.sessionManager.isManagedSessionStarted()) {
-            try {
-                this.sessionManager.commit();
-            } catch (Exception e) {
-            }
-            this.sessionManager.close();
-        }
+  protected static SqlSessionManager getSessionFromStack() {
+    Deque<SqlSessionManager> stack = getSessionStack();
+    if (stack.isEmpty()) {
+      return null;
     }
+    return stack.peek();
+  }
 
-    /**
-     * Initializes the SqlSessionManager.
-     */
-    void initSqlSession() {
-        this.sessionManager.startManagedSession();
-    }
-
-    /**
-     * retrieve the SqlSession used by taskana.
-     *
-     * @return the myBatis SqlSession object used by taskana
-     */
-    SqlSession getSqlSession() {
-        return this.sessionManager;
-    }
-
-    /**
-     * creates the MyBatis transaction factory.
-     *
-     * @param useManagedTransactions
-     *            true if TASKANA should use a ManagedTransactionFactory.
-     */
-    private void createTransactionFactory(boolean useManagedTransactions) {
-        if (useManagedTransactions) {
-            this.transactionFactory = new ManagedTransactionFactory();
-        } else {
-            this.transactionFactory = new JdbcTransactionFactory();
-        }
-    }
-
-    protected SqlSessionManager createSqlSessionManager() {
-        Environment environment = new Environment(DEFAULT, this.transactionFactory,
-            taskanaEngineConfiguration.getDatasource());
-        Configuration configuration = new Configuration(environment);
-
-        // add mappers
-        configuration.addMapper(HistoryEventMapper.class);
-        configuration.addMapper(HistoryQueryMapper.class);
-        SqlSessionFactory localSessionFactory = new SqlSessionFactoryBuilder().build(configuration);
-        return SqlSessionManager.newInstance(localSessionFactory);
-    }
-
-    protected static void pushSessionToStack(SqlSessionManager session) {
-        getSessionStack().push(session);
-    }
-
-    protected static void popSessionFromStack() {
-        Deque<SqlSessionManager> stack = getSessionStack();
-        if (!stack.isEmpty()) {
-            stack.pop();
-        }
-    }
-
-    /**
-     * With sessionStack, we maintain a Stack of SqlSessionManager objects on a per thread basis. SqlSessionManager is
-     * the MyBatis object that wraps database connections. The purpose of this stack is to keep track of nested calls.
-     * Each external API call is wrapped into taskanaEngineImpl.openConnection(); .....
-     * taskanaEngineImpl.returnConnection(); calls. In order to avoid duplicate opening / closing of connections, we use
-     * the sessionStack in the following way: Each time, an openConnection call is received, we push the current
-     * sessionManager onto the stack. On the first call to openConnection, we call sessionManager.startManagedSession()
-     * to open a database connection. On each call to returnConnection() we pop one instance of sessionManager from the
-     * stack. When the stack becomes empty, we close the database connection by calling sessionManager.close()
-     *
-     * @return Stack of SqlSessionManager
-     */
-    protected static Deque<SqlSessionManager> getSessionStack() {
-        Deque<SqlSessionManager> stack = SESSION_STACK.get();
-        if (stack == null) {
-            stack = new ArrayDeque<>();
-            SESSION_STACK.set(stack);
-        }
-        return stack;
-    }
-
-    protected static SqlSessionManager getSessionFromStack() {
-        Deque<SqlSessionManager> stack = getSessionStack();
-        if (stack.isEmpty()) {
-            return null;
-        }
-        return stack.peek();
+  /**
+   * creates the MyBatis transaction factory.
+   *
+   * @param useManagedTransactions true if TASKANA should use a ManagedTransactionFactory.
+   */
+  private void createTransactionFactory(boolean useManagedTransactions) {
+    if (useManagedTransactions) {
+      this.transactionFactory = new ManagedTransactionFactory();
+    } else {
+      this.transactionFactory = new JdbcTransactionFactory();
     }
+  }
 }

history/taskana-simplehistory-provider/src/main/java/pro/taskana/simplehistory/impl/mappings/HistoryEventMapper.java

@@ -5,24 +5,21 @@ import org.apache.ibatis.annotations.Param;
 
 import pro.taskana.history.api.TaskanaHistoryEvent;
 
-/**
- * This class is the mybatis mapping of workbaskets.
- */
+/** This class is the mybatis mapping of workbaskets. */
 public interface HistoryEventMapper {
 
-    @Insert(
-        "<script>INSERT INTO HISTORY_EVENTS (BUSINESS_PROCESS_ID, PARENT_BUSINESS_PROCESS_ID, TASK_ID,"
-            + " EVENT_TYPE, CREATED, USER_ID, DOMAIN, WORKBASKET_KEY, POR_COMPANY, POR_SYSTEM, POR_INSTANCE,"
-            + " POR_TYPE, POR_VALUE, TASK_CLASSIFICATION_KEY, TASK_CLASSIFICATION_CATEGORY, ATTACHMENT_CLASSIFICATION_KEY, "
-            + " COMMENT, OLD_VALUE, NEW_VALUE, CUSTOM_1, CUSTOM_2, CUSTOM_3, CUSTOM_4, OLD_DATA, NEW_DATA)"
-            + " VALUES ( #{historyEvent.businessProcessId}, #{historyEvent.parentBusinessProcessId}, #{historyEvent.taskId},"
-            + " #{historyEvent.eventType}, #{historyEvent.created}, #{historyEvent.userId}, #{historyEvent.domain}, #{historyEvent.workbasketKey},"
-            + " #{historyEvent.porCompany}, #{historyEvent.porSystem}, #{historyEvent.porInstance}, #{historyEvent.porType},"
-            + " #{historyEvent.porValue}, #{historyEvent.taskClassificationKey}, #{historyEvent.taskClassificationCategory},"
-            + " #{historyEvent.attachmentClassificationKey}, #{historyEvent.comment}, #{historyEvent.oldValue}, #{historyEvent.newValue},"
-            + " #{historyEvent.custom1}, #{historyEvent.custom2}, #{historyEvent.custom3}, #{historyEvent.custom4},"
-            + " #{historyEvent.oldData}, #{historyEvent.newData}) "
-            + "</script>")
-    void insert(@Param("historyEvent") TaskanaHistoryEvent historyEvent);
-
+  @Insert(
+      "<script>INSERT INTO HISTORY_EVENTS (BUSINESS_PROCESS_ID, PARENT_BUSINESS_PROCESS_ID, TASK_ID,"
+          + " EVENT_TYPE, CREATED, USER_ID, DOMAIN, WORKBASKET_KEY, POR_COMPANY, POR_SYSTEM, POR_INSTANCE,"
+          + " POR_TYPE, POR_VALUE, TASK_CLASSIFICATION_KEY, TASK_CLASSIFICATION_CATEGORY, ATTACHMENT_CLASSIFICATION_KEY, "
+          + " COMMENT, OLD_VALUE, NEW_VALUE, CUSTOM_1, CUSTOM_2, CUSTOM_3, CUSTOM_4, OLD_DATA, NEW_DATA)"
+          + " VALUES ( #{historyEvent.businessProcessId}, #{historyEvent.parentBusinessProcessId}, #{historyEvent.taskId},"
+          + " #{historyEvent.eventType}, #{historyEvent.created}, #{historyEvent.userId}, #{historyEvent.domain}, #{historyEvent.workbasketKey},"
+          + " #{historyEvent.porCompany}, #{historyEvent.porSystem}, #{historyEvent.porInstance}, #{historyEvent.porType},"
+          + " #{historyEvent.porValue}, #{historyEvent.taskClassificationKey}, #{historyEvent.taskClassificationCategory},"
+          + " #{historyEvent.attachmentClassificationKey}, #{historyEvent.comment}, #{historyEvent.oldValue}, #{historyEvent.newValue},"
+          + " #{historyEvent.custom1}, #{historyEvent.custom2}, #{historyEvent.custom3}, #{historyEvent.custom4},"
+          + " #{historyEvent.oldData}, #{historyEvent.newData}) "
+          + "</script>")
+  void insert(@Param("historyEvent") TaskanaHistoryEvent historyEvent);
 }

history/taskana-simplehistory-provider/src/main/java/pro/taskana/simplehistory/impl/mappings/HistoryQueryMapper.java

@@ -1,7 +1,6 @@
 package pro.taskana.simplehistory.impl.mappings;
 
 import java.util.List;
-
 import org.apache.ibatis.annotations.Result;
 import org.apache.ibatis.annotations.Results;
 import org.apache.ibatis.annotations.Select;
@@ -9,221 +8,221 @@ import org.apache.ibatis.annotations.Select;
 import pro.taskana.simplehistory.impl.HistoryEventImpl;
 import pro.taskana.simplehistory.impl.HistoryQueryImpl;
 
-/**
- * This class is the mybatis mapping of historyQueries.
- */
+/** This class is the mybatis mapping of historyQueries. */
 public interface HistoryQueryMapper {
 
-    @Select(
-        "<script>"
-            + "SELECT ID, BUSINESS_PROCESS_ID, PARENT_BUSINESS_PROCESS_ID, TASK_ID, EVENT_TYPE, CREATED, USER_ID, DOMAIN, WORKBASKET_KEY, "
-            + "POR_COMPANY, POR_SYSTEM, POR_INSTANCE, POR_TYPE, POR_VALUE, TASK_CLASSIFICATION_KEY, TASK_CLASSIFICATION_CATEGORY,"
-            + "ATTACHMENT_CLASSIFICATION_KEY, COMMENT, OLD_VALUE, NEW_VALUE, CUSTOM_1, CUSTOM_2, CUSTOM_3, CUSTOM_4, OLD_DATA, NEW_DATA "
-            + "FROM HISTORY_EVENTS"
-            + "<where>"
-            // IN-Queries
-            + "<if test='idIn != null'>AND UPPER(ID) IN (<foreach item='item' collection='idIn' separator=',' >#{item}</foreach>)</if> "
-            + "<if test='businessProcessIdIn != null'>AND UPPER(BUSINESS_PROCESS_ID) IN (<foreach item='item' collection='businessProcessIdIn' separator=',' >#{item}</foreach>)</if> "
-            + "<if test='parentBusinessProcessIdIn != null'>AND UPPER(PARENT_BUSINESS_PROCESS_ID) IN (<foreach item='item' collection='parentBusinessProcessIdIn' separator=',' >#{item}</foreach>)</if> "
-            + "<if test='taskIdIn != null'>AND UPPER(TASK_ID) IN (<foreach item='item' collection='taskIdIn' separator=',' >#{item}</foreach>)</if> "
-            + "<if test='eventTypeIn != null'>AND UPPER(EVENT_TYPE) IN (<foreach item='item' collection='eventTypeIn' separator=',' >#{item}</foreach>)</if> "
-            + "<if test='createdIn !=null'> AND ( <foreach item='item' collection='createdIn' separator=',' > ( <if test='item.begin!=null'> CREATED &gt;= #{item.begin} </if> <if test='item.begin!=null and item.end!=null'> AND </if><if test='item.end!=null'> CREATED &lt;=#{item.end} </if>)</foreach>)</if> "
-            + "<if test='userIdIn != null'>AND UPPER(USER_ID) IN (<foreach item='item' collection='userIdIn' separator=',' >#{item}</foreach>)</if> "
-            + "<if test='domainIn != null'>AND UPPER(DOMAIN) IN (<foreach item='item' collection='domainIn' separator=',' >#{item}</foreach>)</if> "
-            + "<if test='workbasketKeyIn != null'>AND UPPER(WORKBASKET_KEY) IN (<foreach item='item' collection='workbasketKeyIn' separator=',' >#{item}</foreach>)</if> "
-            + "<if test='porCompanyIn != null'>AND UPPER(POR_COMPANY) IN (<foreach item='item' collection='porCompanyIn' separator=',' >#{item}</foreach>)</if> "
-            + "<if test='porSystemIn != null'>AND UPPER(POR_SYSTEM) IN (<foreach item='item' collection='porSystemIn' separator=',' >#{item}</foreach>)</if> "
-            + "<if test='porInstanceIn != null'>AND UPPER(POR_INSTANCE) IN (<foreach item='item' collection='porInstanceIn' separator=',' >#{item}</foreach>)</if> "
-            + "<if test='porTypeIn != null'>AND UPPER(POR_TYPE) IN (<foreach item='item' collection='porTypeIn' separator=',' >#{item}</foreach>)</if> "
-            + "<if test='porValueIn != null'>AND UPPER(POR_VALUE) IN (<foreach item='item' collection='porValueIn' separator=',' >#{item}</foreach>)</if> "
-            + "<if test='taskClassificationKeyIn != null'>AND UPPER(TASK_CLASSIFICATION_KEY) IN (<foreach item='item' collection='taskClassificationKeyIn' separator=',' >#{item}</foreach>)</if> "
-            + "<if test='taskClassificationCategoryIn != null'>AND UPPER(TASK_CLASSIFICATION_CATEGORY) IN (<foreach item='item' collection='taskClassificationCategoryIn' separator=',' >#{item}</foreach>)</if> "
-            + "<if test='attachmentClassificationKeyIn != null'>AND UPPER(ATTACHMENT_CLASSIFICATION_KEY) IN (<foreach item='item' collection='attachmentClassificationKeyIn' separator=',' >#{item}</foreach>)</if> "
-            + "<if test='commentIn != null'>AND UPPER(COMMENT) IN (<foreach item='item' collection='commentIn' separator=',' >#{item}</foreach>)</if> "
-            + "<if test='oldValueIn != null'>AND UPPER(OLD_VALUE) IN (<foreach item='item' collection='oldValueIn' separator=',' >#{item}</foreach>)</if> "
-            + "<if test='newValueIn != null'>AND UPPER(NEW_VALUE) IN (<foreach item='item' collection='newValueIn' separator=',' >#{item}</foreach>)</if> "
-            + "<if test='custom1In != null'>AND UPPER(CUSTOM_1) IN (<foreach item='item' collection='custom1In' separator=',' >#{item}</foreach>)</if> "
-            + "<if test='custom2In != null'>AND UPPER(CUSTOM_2) IN (<foreach item='item' collection='custom2In' separator=',' >#{item}</foreach>)</if> "
-            + "<if test='custom3In != null'>AND UPPER(CUSTOM_3) IN (<foreach item='item' collection='custom3In' separator=',' >#{item}</foreach>)</if> "
-            + "<if test='custom4In != null'>AND UPPER(CUSTOM_4) IN (<foreach item='item' collection='custom4In' separator=',' >#{item}</foreach>)</if> "
-            + "<if test='oldDataIn != null'>AND UPPER(OLD_DATA) IN (<foreach item='item' collection='oldDataIn' separator=',' >#{item}</foreach>)</if> "
-            + "<if test='newDataIn != null'>AND UPPER(NEW_DATA) IN (<foreach item='item' collection='newDataIn' separator=',' >#{item}</foreach>)</if> "
-            // LIKE-Queries
-            + "<if test='businessProcessIdLike != null'>AND (<foreach item='item' collection='businessProcessIdLike' separator='OR' > UPPER(BUSINESS_PROCESS_ID) LIKE #{item} </foreach>)</if> "
-            + "<if test='parentBusinessProcessIdLike != null'>AND (<foreach item='item' collection='parentBusinessProcessIdLike' separator=' OR ' >UPPER(PARENT_BUSINESS_PROCESS_ID) LIKE #{item}</foreach>)</if> "
-            + "<if test='taskIdLike != null'>AND (<foreach item='item' collection='taskIdLike' separator=' OR ' >UPPER(TASK_ID) LIKE #{item}</foreach>)</if> "
-            + "<if test='eventTypeLike != null'>AND (<foreach item='item' collection='eventTypeLike' separator=' OR ' >UPPER(EVENT_TYPE) LIKE #{item}</foreach>)</if> "
-            + "<if test='userIdLike != null'>AND (<foreach item='item' collection='userIdLike' separator=' OR ' >UPPER(USER_ID) LIKE #{item}</foreach>)</if> "
-            + "<if test='domainLike != null'>AND (<foreach item='item' collection='domainLike' separator=' OR ' >UPPER(DOMAIN) LIKE #{item}</foreach>)</if> "
-            + "<if test='workbasketKeyLike != null'>AND (<foreach item='item' collection='workbasketKeyLike' separator=' OR ' >UPPER(WORKBASKET_KEY) LIKE #{item}</foreach>)</if> "
-            + "<if test='porCompanyLike != null'>AND (<foreach item='item' collection='porCompanyLike' separator=' OR ' >UPPER(POR_COMPANY) LIKE #{item}</foreach>)</if> "
-            + "<if test='porSystemLike != null'>AND (<foreach item='item' collection='porSystemLike' separator=' OR ' >UPPER(POR_SYSTEM) LIKE #{item}</foreach>)</if> "
-            + "<if test='porInstanceLike != null'>AND (<foreach item='item' collection='porInstanceLike' separator=' OR ' >UPPER(POR_INSTANCE) LIKE #{item}</foreach>)</if> "
-            + "<if test='porTypeLike != null'>AND (<foreach item='item' collection='porTypeLike' separator=' OR ' >UPPER(POR_TYPE) LIKE #{item}</foreach>)</if> "
-            + "<if test='porValueLike != null'>AND (<foreach item='item' collection='porValueLike' separator=' OR ' >UPPER(POR_VALUE) LIKE #{item}</foreach>)</if> "
-            + "<if test='taskClassificationKeyLike != null'>AND (<foreach item='item' collection='taskClassificationKeyLike' separator=' OR ' >UPPER(TASK_CLASSIFICATION_KEY) LIKE #{item}</foreach>)</if> "
-            + "<if test='taskClassificationCategoryLike != null'>AND (<foreach item='item' collection='taskClassificationCategoryLike' separator=' OR ' >UPPER(TASK_CLASSIFICATION_CATEGORY) LIKE #{item}</foreach>)</if> "
-            + "<if test='attachmentClassificationKeyLike != null'>AND (<foreach item='item' collection='attachmentClassificationKeyLike' separator=' OR ' >UPPER(ATTACHMENT_CLASSIFICATION_KEY) LIKE #{item}</foreach>)</if> "
-            + "<if test='commentLike != null'>AND (<foreach item='item' collection='commentLike' separator=' OR ' >UPPER(COMMENT) LIKE #{item}</foreach>)</if> "
-            + "<if test='oldValueLike != null'>AND (<foreach item='item' collection='oldValueLike' separator=' OR ' >UPPER(OLD_VALUE) LIKE #{item}</foreach>)</if> "
-            + "<if test='newValueLike != null'>AND (<foreach item='item' collection='newValueLike' separator=' OR ' >UPPER(NEW_VALUE) LIKE #{item}</foreach>)</if> "
-            + "<if test='custom1Like != null'>AND (<foreach item='item' collection='custom1Like' separator=' OR ' >UPPER(CUSTOM_1) LIKE #{item}</foreach>)</if> "
-            + "<if test='custom2Like != null'>AND (<foreach item='item' collection='custom2Like' separator=' OR ' >UPPER(CUSTOM_2) LIKE #{item}</foreach>)</if> "
-            + "<if test='custom3Like != null'>AND (<foreach item='item' collection='custom3Like' separator=' OR ' >UPPER(CUSTOM_3) LIKE #{item}</foreach>)</if> "
-            + "<if test='custom4Like != null'>AND (<foreach item='item' collection='custom4Like' separator=' OR ' >UPPER(CUSTOM_4) LIKE #{item}</foreach>)</if> "
-            + "<if test='oldDataLike != null'>AND (<foreach item='item' collection='oldDataLike' separator=' OR ' >UPPER(OLD_DATA) LIKE #{item}</foreach>)</if> "
-            + "<if test='newDataLike != null'>AND (<foreach item='item' collection='newDataLike' separator=' OR ' >UPPER(NEW_DATA) LIKE #{item}</foreach>)</if> "
-            + "</where>"
-            + "<if test='!orderBy.isEmpty()'>ORDER BY <foreach item='item' collection='orderBy' separator=',' >${item}</foreach></if> "
-            + "<if test='maxRows > 0'> FETCH FIRST #{maxRows} ROWS ONLY </if>"
-            + "</script>")
-    @Results(value = {
-            @Result(property = "id", column = "ID"),
-            @Result(property = "businessProcessId", column = "BUSINESS_PROCESS_ID"),
-            @Result(property = "parentBusinessProcessId", column = "PARENT_BUSINESS_PROCESS_ID"),
-            @Result(property = "taskId", column = "TASK_ID"),
-            @Result(property = "eventType", column = "EVENT_TYPE"),
-            @Result(property = "created", column = "CREATED"),
-            @Result(property = "userId", column = "USER_ID"),
-            @Result(property = "domain", column = "DOMAIN"),
-            @Result(property = "workbasketKey", column = "WORKBASKET_KEY"),
-            @Result(property = "porCompany", column = "POR_COMPANY"),
-            @Result(property = "porSystem", column = "POR_SYSTEM"),
-            @Result(property = "porInstance", column = "POR_INSTANCE"),
-            @Result(property = "porType", column = "POR_TYPE"),
-            @Result(property = "porValue", column = "POR_VALUE"),
-            @Result(property = "taskClassificationKey", column = "TASK_CLASSIFICATION_KEY"),
-            @Result(property = "taskClassificationCategory", column = "TASK_CLASSIFICATION_CATEGORY"),
-            @Result(property = "attachmentClassificationKey", column = "ATTACHMENT_CLASSIFICATION_KEY"),
-            @Result(property = "comment", column = "COMMENT"),
-            @Result(property = "oldValue", column = "OLD_VALUE"),
-            @Result(property = "newValue", column = "NEW_VALUE"),
-            @Result(property = "custom1", column = "CUSTOM_1"),
-            @Result(property = "custom2", column = "CUSTOM_2"),
-            @Result(property = "custom3", column = "CUSTOM_3"),
-            @Result(property = "custom4", column = "CUSTOM_4"),
-            @Result(property = "oldData", column = "OLD_DATA"),
-            @Result(property = "newData", column = "NEW_DATA")
-        })
-    List<HistoryEventImpl> queryHistoryEvent(HistoryQueryImpl historyEventQuery);
+  @Select(
+      "<script>"
+          + "SELECT ID, BUSINESS_PROCESS_ID, PARENT_BUSINESS_PROCESS_ID, TASK_ID, EVENT_TYPE, CREATED, USER_ID, DOMAIN, WORKBASKET_KEY, "
+          + "POR_COMPANY, POR_SYSTEM, POR_INSTANCE, POR_TYPE, POR_VALUE, TASK_CLASSIFICATION_KEY, TASK_CLASSIFICATION_CATEGORY,"
+          + "ATTACHMENT_CLASSIFICATION_KEY, COMMENT, OLD_VALUE, NEW_VALUE, CUSTOM_1, CUSTOM_2, CUSTOM_3, CUSTOM_4, OLD_DATA, NEW_DATA "
+          + "FROM HISTORY_EVENTS"
+          + "<where>"
+          // IN-Queries
+          + "<if test='idIn != null'>AND UPPER(ID) IN (<foreach item='item' collection='idIn' separator=',' >#{item}</foreach>)</if> "
+          + "<if test='businessProcessIdIn != null'>AND UPPER(BUSINESS_PROCESS_ID) IN (<foreach item='item' collection='businessProcessIdIn' separator=',' >#{item}</foreach>)</if> "
+          + "<if test='parentBusinessProcessIdIn != null'>AND UPPER(PARENT_BUSINESS_PROCESS_ID) IN (<foreach item='item' collection='parentBusinessProcessIdIn' separator=',' >#{item}</foreach>)</if> "
+          + "<if test='taskIdIn != null'>AND UPPER(TASK_ID) IN (<foreach item='item' collection='taskIdIn' separator=',' >#{item}</foreach>)</if> "
+          + "<if test='eventTypeIn != null'>AND UPPER(EVENT_TYPE) IN (<foreach item='item' collection='eventTypeIn' separator=',' >#{item}</foreach>)</if> "
+          + "<if test='createdIn !=null'> AND ( <foreach item='item' collection='createdIn' separator=',' > ( <if test='item.begin!=null'> CREATED &gt;= #{item.begin} </if> <if test='item.begin!=null and item.end!=null'> AND </if><if test='item.end!=null'> CREATED &lt;=#{item.end} </if>)</foreach>)</if> "
+          + "<if test='userIdIn != null'>AND UPPER(USER_ID) IN (<foreach item='item' collection='userIdIn' separator=',' >#{item}</foreach>)</if> "
+          + "<if test='domainIn != null'>AND UPPER(DOMAIN) IN (<foreach item='item' collection='domainIn' separator=',' >#{item}</foreach>)</if> "
+          + "<if test='workbasketKeyIn != null'>AND UPPER(WORKBASKET_KEY) IN (<foreach item='item' collection='workbasketKeyIn' separator=',' >#{item}</foreach>)</if> "
+          + "<if test='porCompanyIn != null'>AND UPPER(POR_COMPANY) IN (<foreach item='item' collection='porCompanyIn' separator=',' >#{item}</foreach>)</if> "
+          + "<if test='porSystemIn != null'>AND UPPER(POR_SYSTEM) IN (<foreach item='item' collection='porSystemIn' separator=',' >#{item}</foreach>)</if> "
+          + "<if test='porInstanceIn != null'>AND UPPER(POR_INSTANCE) IN (<foreach item='item' collection='porInstanceIn' separator=',' >#{item}</foreach>)</if> "
+          + "<if test='porTypeIn != null'>AND UPPER(POR_TYPE) IN (<foreach item='item' collection='porTypeIn' separator=',' >#{item}</foreach>)</if> "
+          + "<if test='porValueIn != null'>AND UPPER(POR_VALUE) IN (<foreach item='item' collection='porValueIn' separator=',' >#{item}</foreach>)</if> "
+          + "<if test='taskClassificationKeyIn != null'>AND UPPER(TASK_CLASSIFICATION_KEY) IN (<foreach item='item' collection='taskClassificationKeyIn' separator=',' >#{item}</foreach>)</if> "
+          + "<if test='taskClassificationCategoryIn != null'>AND UPPER(TASK_CLASSIFICATION_CATEGORY) IN (<foreach item='item' collection='taskClassificationCategoryIn' separator=',' >#{item}</foreach>)</if> "
+          + "<if test='attachmentClassificationKeyIn != null'>AND UPPER(ATTACHMENT_CLASSIFICATION_KEY) IN (<foreach item='item' collection='attachmentClassificationKeyIn' separator=',' >#{item}</foreach>)</if> "
+          + "<if test='commentIn != null'>AND UPPER(COMMENT) IN (<foreach item='item' collection='commentIn' separator=',' >#{item}</foreach>)</if> "
+          + "<if test='oldValueIn != null'>AND UPPER(OLD_VALUE) IN (<foreach item='item' collection='oldValueIn' separator=',' >#{item}</foreach>)</if> "
+          + "<if test='newValueIn != null'>AND UPPER(NEW_VALUE) IN (<foreach item='item' collection='newValueIn' separator=',' >#{item}</foreach>)</if> "
+          + "<if test='custom1In != null'>AND UPPER(CUSTOM_1) IN (<foreach item='item' collection='custom1In' separator=',' >#{item}</foreach>)</if> "
+          + "<if test='custom2In != null'>AND UPPER(CUSTOM_2) IN (<foreach item='item' collection='custom2In' separator=',' >#{item}</foreach>)</if> "
+          + "<if test='custom3In != null'>AND UPPER(CUSTOM_3) IN (<foreach item='item' collection='custom3In' separator=',' >#{item}</foreach>)</if> "
+          + "<if test='custom4In != null'>AND UPPER(CUSTOM_4) IN (<foreach item='item' collection='custom4In' separator=',' >#{item}</foreach>)</if> "
+          + "<if test='oldDataIn != null'>AND UPPER(OLD_DATA) IN (<foreach item='item' collection='oldDataIn' separator=',' >#{item}</foreach>)</if> "
+          + "<if test='newDataIn != null'>AND UPPER(NEW_DATA) IN (<foreach item='item' collection='newDataIn' separator=',' >#{item}</foreach>)</if> "
+          // LIKE-Queries
+          + "<if test='businessProcessIdLike != null'>AND (<foreach item='item' collection='businessProcessIdLike' separator='OR' > UPPER(BUSINESS_PROCESS_ID) LIKE #{item} </foreach>)</if> "
+          + "<if test='parentBusinessProcessIdLike != null'>AND (<foreach item='item' collection='parentBusinessProcessIdLike' separator=' OR ' >UPPER(PARENT_BUSINESS_PROCESS_ID) LIKE #{item}</foreach>)</if> "
+          + "<if test='taskIdLike != null'>AND (<foreach item='item' collection='taskIdLike' separator=' OR ' >UPPER(TASK_ID) LIKE #{item}</foreach>)</if> "
+          + "<if test='eventTypeLike != null'>AND (<foreach item='item' collection='eventTypeLike' separator=' OR ' >UPPER(EVENT_TYPE) LIKE #{item}</foreach>)</if> "
+          + "<if test='userIdLike != null'>AND (<foreach item='item' collection='userIdLike' separator=' OR ' >UPPER(USER_ID) LIKE #{item}</foreach>)</if> "
+          + "<if test='domainLike != null'>AND (<foreach item='item' collection='domainLike' separator=' OR ' >UPPER(DOMAIN) LIKE #{item}</foreach>)</if> "
+          + "<if test='workbasketKeyLike != null'>AND (<foreach item='item' collection='workbasketKeyLike' separator=' OR ' >UPPER(WORKBASKET_KEY) LIKE #{item}</foreach>)</if> "
+          + "<if test='porCompanyLike != null'>AND (<foreach item='item' collection='porCompanyLike' separator=' OR ' >UPPER(POR_COMPANY) LIKE #{item}</foreach>)</if> "
+          + "<if test='porSystemLike != null'>AND (<foreach item='item' collection='porSystemLike' separator=' OR ' >UPPER(POR_SYSTEM) LIKE #{item}</foreach>)</if> "
+          + "<if test='porInstanceLike != null'>AND (<foreach item='item' collection='porInstanceLike' separator=' OR ' >UPPER(POR_INSTANCE) LIKE #{item}</foreach>)</if> "
+          + "<if test='porTypeLike != null'>AND (<foreach item='item' collection='porTypeLike' separator=' OR ' >UPPER(POR_TYPE) LIKE #{item}</foreach>)</if> "
+          + "<if test='porValueLike != null'>AND (<foreach item='item' collection='porValueLike' separator=' OR ' >UPPER(POR_VALUE) LIKE #{item}</foreach>)</if> "
+          + "<if test='taskClassificationKeyLike != null'>AND (<foreach item='item' collection='taskClassificationKeyLike' separator=' OR ' >UPPER(TASK_CLASSIFICATION_KEY) LIKE #{item}</foreach>)</if> "
+          + "<if test='taskClassificationCategoryLike != null'>AND (<foreach item='item' collection='taskClassificationCategoryLike' separator=' OR ' >UPPER(TASK_CLASSIFICATION_CATEGORY) LIKE #{item}</foreach>)</if> "
+          + "<if test='attachmentClassificationKeyLike != null'>AND (<foreach item='item' collection='attachmentClassificationKeyLike' separator=' OR ' >UPPER(ATTACHMENT_CLASSIFICATION_KEY) LIKE #{item}</foreach>)</if> "
+          + "<if test='commentLike != null'>AND (<foreach item='item' collection='commentLike' separator=' OR ' >UPPER(COMMENT) LIKE #{item}</foreach>)</if> "
+          + "<if test='oldValueLike != null'>AND (<foreach item='item' collection='oldValueLike' separator=' OR ' >UPPER(OLD_VALUE) LIKE #{item}</foreach>)</if> "
+          + "<if test='newValueLike != null'>AND (<foreach item='item' collection='newValueLike' separator=' OR ' >UPPER(NEW_VALUE) LIKE #{item}</foreach>)</if> "
+          + "<if test='custom1Like != null'>AND (<foreach item='item' collection='custom1Like' separator=' OR ' >UPPER(CUSTOM_1) LIKE #{item}</foreach>)</if> "
+          + "<if test='custom2Like != null'>AND (<foreach item='item' collection='custom2Like' separator=' OR ' >UPPER(CUSTOM_2) LIKE #{item}</foreach>)</if> "
+          + "<if test='custom3Like != null'>AND (<foreach item='item' collection='custom3Like' separator=' OR ' >UPPER(CUSTOM_3) LIKE #{item}</foreach>)</if> "
+          + "<if test='custom4Like != null'>AND (<foreach item='item' collection='custom4Like' separator=' OR ' >UPPER(CUSTOM_4) LIKE #{item}</foreach>)</if> "
+          + "<if test='oldDataLike != null'>AND (<foreach item='item' collection='oldDataLike' separator=' OR ' >UPPER(OLD_DATA) LIKE #{item}</foreach>)</if> "
+          + "<if test='newDataLike != null'>AND (<foreach item='item' collection='newDataLike' separator=' OR ' >UPPER(NEW_DATA) LIKE #{item}</foreach>)</if> "
+          + "</where>"
+          + "<if test='!orderBy.isEmpty()'>ORDER BY <foreach item='item' collection='orderBy' separator=',' >${item}</foreach></if> "
+          + "<if test='maxRows > 0'> FETCH FIRST #{maxRows} ROWS ONLY </if>"
+          + "</script>")
+  @Results(
+      value = {
+        @Result(property = "id", column = "ID"),
+        @Result(property = "businessProcessId", column = "BUSINESS_PROCESS_ID"),
+        @Result(property = "parentBusinessProcessId", column = "PARENT_BUSINESS_PROCESS_ID"),
+        @Result(property = "taskId", column = "TASK_ID"),
+        @Result(property = "eventType", column = "EVENT_TYPE"),
+        @Result(property = "created", column = "CREATED"),
+        @Result(property = "userId", column = "USER_ID"),
+        @Result(property = "domain", column = "DOMAIN"),
+        @Result(property = "workbasketKey", column = "WORKBASKET_KEY"),
+        @Result(property = "porCompany", column = "POR_COMPANY"),
+        @Result(property = "porSystem", column = "POR_SYSTEM"),
+        @Result(property = "porInstance", column = "POR_INSTANCE"),
+        @Result(property = "porType", column = "POR_TYPE"),
+        @Result(property = "porValue", column = "POR_VALUE"),
+        @Result(property = "taskClassificationKey", column = "TASK_CLASSIFICATION_KEY"),
+        @Result(property = "taskClassificationCategory", column = "TASK_CLASSIFICATION_CATEGORY"),
+        @Result(property = "attachmentClassificationKey", column = "ATTACHMENT_CLASSIFICATION_KEY"),
+        @Result(property = "comment", column = "COMMENT"),
+        @Result(property = "oldValue", column = "OLD_VALUE"),
+        @Result(property = "newValue", column = "NEW_VALUE"),
+        @Result(property = "custom1", column = "CUSTOM_1"),
+        @Result(property = "custom2", column = "CUSTOM_2"),
+        @Result(property = "custom3", column = "CUSTOM_3"),
+        @Result(property = "custom4", column = "CUSTOM_4"),
+        @Result(property = "oldData", column = "OLD_DATA"),
+        @Result(property = "newData", column = "NEW_DATA")
+      })
+  List<HistoryEventImpl> queryHistoryEvent(HistoryQueryImpl historyEventQuery);
 
-    @Select(
-        "<script>"
-            + "SELECT COUNT(ID) "
-            + "FROM HISTORY_EVENTS"
-            + "<where>"
-            // IN-Queries
-            + "<if test='businessProcessIdIn != null'>AND UPPER(BUSINESS_PROCESS_ID) IN (<foreach item='item' collection='businessProcessIdIn' separator=',' >#{item}</foreach>)</if> "
-            + "<if test='parentBusinessProcessIdIn != null'>AND UPPER(PARENT_BUSINESS_PROCESS_ID) IN (<foreach item='item' collection='parentBusinessProcessIdIn' separator=',' >#{item}</foreach>)</if> "
-            + "<if test='taskIdIn != null'>AND UPPER(TASK_ID) IN (<foreach item='item' collection='taskIdIn' separator=',' >#{item}</foreach>)</if> "
-            + "<if test='eventTypeIn != null'>AND UPPER(EVENT_TYPE) IN (<foreach item='item' collection='eventTypeIn' separator=',' >#{item}</foreach>)</if> "
-            + "<if test='createdIn !=null'> AND ( <foreach item='item' collection='createdIn' separator=',' > ( <if test='item.begin!=null'> CREATED &gt;= #{item.begin} </if> <if test='item.begin!=null and item.end!=null'> AND </if><if test='item.end!=null'> CREATED &lt;=#{item.end} </if>)</foreach>)</if> "
-            + "<if test='userIdIn != null'>AND UPPER(USER_ID) IN (<foreach item='item' collection='userIdIn' separator=',' >#{item}</foreach>)</if> "
-            + "<if test='domainIn != null'>AND UPPER(DOMAIN) IN (<foreach item='item' collection='domainIn' separator=',' >#{item}</foreach>)</if> "
-            + "<if test='workbasketKeyIn != null'>AND UPPER(WORKBASKET_KEY) IN (<foreach item='item' collection='workbasketKeyIn' separator=',' >#{item}</foreach>)</if> "
-            + "<if test='porCompanyIn != null'>AND UPPER(POR_COMPANY) IN (<foreach item='item' collection='porCompanyIn' separator=',' >#{item}</foreach>)</if> "
-            + "<if test='porSystemIn != null'>AND UPPER(POR_SYSTEM) IN (<foreach item='item' collection='porSystemIn' separator=',' >#{item}</foreach>)</if> "
-            + "<if test='porInstanceIn != null'>AND UPPER(POR_INSTANCE) IN (<foreach item='item' collection='porInstanceIn' separator=',' >#{item}</foreach>)</if> "
-            + "<if test='porTypeIn != null'>AND UPPER(POR_TYPE) IN (<foreach item='item' collection='porTypeIn' separator=',' >#{item}</foreach>)</if> "
-            + "<if test='porValueIn != null'>AND UPPER(POR_VALUE) IN (<foreach item='item' collection='porValueIn' separator=',' >#{item}</foreach>)</if> "
-            + "<if test='taskClassificationKeyIn != null'>AND UPPER(TASK_CLASSIFICATION_KEY) IN (<foreach item='item' collection='taskClassificationKeyIn' separator=',' >#{item}</foreach>)</if> "
-            + "<if test='taskClassificationCategoryIn != null'>AND UPPER(TASK_CLASSIFICATION_CATEGORY) IN (<foreach item='item' collection='taskClassificationCategoryIn' separator=',' >#{item}</foreach>)</if> "
-            + "<if test='attachmentClassificationKeyIn != null'>AND UPPER(ATTACHMENT_CLASSIFICATION_KEY) IN (<foreach item='item' collection='attachmentClassificationKeyIn' separator=',' >#{item}</foreach>)</if> "
-            + "<if test='commentIn != null'>AND UPPER(COMMENT) IN (<foreach item='item' collection='commentIn' separator=',' >#{item}</foreach>)</if> "
-            + "<if test='oldValueIn != null'>AND UPPER(OLD_VALUE) IN (<foreach item='item' collection='oldValueIn' separator=',' >#{item}</foreach>)</if> "
-            + "<if test='newValueIn != null'>AND UPPER(NEW_VALUE) IN (<foreach item='item' collection='newValueIn' separator=',' >#{item}</foreach>)</if> "
-            + "<if test='custom1In != null'>AND UPPER(CUSTOM_1) IN (<foreach item='item' collection='custom1In' separator=',' >#{item}</foreach>)</if> "
-            + "<if test='custom2In != null'>AND UPPER(CUSTOM_2) IN (<foreach item='item' collection='custom2In' separator=',' >#{item}</foreach>)</if> "
-            + "<if test='custom3In != null'>AND UPPER(CUSTOM_3) IN (<foreach item='item' collection='custom3In' separator=',' >#{item}</foreach>)</if> "
-            + "<if test='custom4In != null'>AND UPPER(CUSTOM_4) IN (<foreach item='item' collection='custom4In' separator=',' >#{item}</foreach>)</if> "
-            + "<if test='oldDataIn != null'>AND UPPER(OLD_DATA) IN (<foreach item='item' collection='oldDataIn' separator=',' >#{item}</foreach>)</if> "
-            + "<if test='newDataIn != null'>AND UPPER(NEW_DATA) IN (<foreach item='item' collection='newDataIn' separator=',' >#{item}</foreach>)</if> "
-            // LIKE-Queries
-            + "<if test='businessProcessIdLike != null'>AND (<foreach item='item' collection='businessProcessIdLike' separator='OR' > UPPER(BUSINESS_PROCESS_ID) LIKE #{item} </foreach>)</if> "
-            + "<if test='parentBusinessProcessIdLike != null'>AND (<foreach item='item' collection='parentBusinessProcessIdLike' separator=' OR ' >UPPER(PARENT_BUSINESS_PROCESS_ID) LIKE #{item}</foreach>)</if> "
-            + "<if test='taskIdLike != null'>AND (<foreach item='item' collection='taskIdLike' separator=' OR ' >UPPER(TASK_ID) LIKE #{item}</foreach>)</if> "
-            + "<if test='eventTypeLike != null'>AND (<foreach item='item' collection='eventTypeLike' separator=' OR ' >UPPER(EVENT_TYPE) LIKE #{item}</foreach>)</if> "
-            + "<if test='userIdLike != null'>AND (<foreach item='item' collection='userIdLike' separator=' OR ' >UPPER(USER_ID) LIKE #{item}</foreach>)</if> "
-            + "<if test='domainLike != null'>AND (<foreach item='item' collection='domainLike' separator=' OR ' >UPPER(DOMAIN) LIKE #{item}</foreach>)</if> "
-            + "<if test='workbasketKeyLike != null'>AND (<foreach item='item' collection='workbasketKeyLike' separator=' OR ' >UPPER(WORKBASKET_KEY) LIKE #{item}</foreach>)</if> "
-            + "<if test='porCompanyLike != null'>AND (<foreach item='item' collection='porCompanyLike' separator=' OR ' >UPPER(POR_COMPANY) LIKE #{item}</foreach>)</if> "
-            + "<if test='porSystemLike != null'>AND (<foreach item='item' collection='porSystemLike' separator=' OR ' >UPPER(POR_SYSTEM) LIKE #{item}</foreach>)</if> "
-            + "<if test='porInstanceLike != null'>AND (<foreach item='item' collection='porInstanceLike' separator=' OR ' >UPPER(POR_INSTANCE) LIKE #{item}</foreach>)</if> "
-            + "<if test='porTypeLike != null'>AND (<foreach item='item' collection='porTypeLike' separator=' OR ' >UPPER(POR_TYPE) LIKE #{item}</foreach>)</if> "
-            + "<if test='porValueLike != null'>AND (<foreach item='item' collection='porValueLike' separator=' OR ' >UPPER(POR_VALUE) LIKE #{item}</foreach>)</if> "
-            + "<if test='taskClassificationKeyLike != null'>AND (<foreach item='item' collection='taskClassificationKeyLike' separator=' OR ' >UPPER(TASK_CLASSIFICATION_KEY) LIKE #{item}</foreach>)</if> "
-            + "<if test='taskClassificationCategoryLike != null'>AND (<foreach item='item' collection='taskClassificationCategoryLike' separator=' OR ' >UPPER(TASK_CLASSIFICATION_CATEGORY) LIKE #{item}</foreach>)</if> "
-            + "<if test='attachmentClassificationKeyLike != null'>AND (<foreach item='item' collection='attachmentClassificationKeyLike' separator=' OR ' >UPPER(ATTACHMENT_CLASSIFICATION_KEY) LIKE #{item}</foreach>)</if> "
-            + "<if test='commentLike != null'>AND (<foreach item='item' collection='commentLike' separator=' OR ' >UPPER(COMMENT) LIKE #{item}</foreach>)</if> "
-            + "<if test='oldValueLike != null'>AND (<foreach item='item' collection='oldValueLike' separator=' OR ' >UPPER(OLD_VALUE) LIKE #{item}</foreach>)</if> "
-            + "<if test='newValueLike != null'>AND (<foreach item='item' collection='newValueLike' separator=' OR ' >UPPER(NEW_VALUE) LIKE #{item}</foreach>)</if> "
-            + "<if test='custom1Like != null'>AND (<foreach item='item' collection='custom1Like' separator=' OR ' >UPPER(CUSTOM_1) LIKE #{item}</foreach>)</if> "
-            + "<if test='custom2Like != null'>AND (<foreach item='item' collection='custom2Like' separator=' OR ' >UPPER(CUSTOM_2) LIKE #{item}</foreach>)</if> "
-            + "<if test='custom3Like != null'>AND (<foreach item='item' collection='custom3Like' separator=' OR ' >UPPER(CUSTOM_3) LIKE #{item}</foreach>)</if> "
-            + "<if test='custom4Like != null'>AND (<foreach item='item' collection='custom4Like' separator=' OR ' >UPPER(CUSTOM_4) LIKE #{item}</foreach>)</if> "
-            + "<if test='oldDataLike != null'>AND (<foreach item='item' collection='oldDataLike' separator=' OR ' >UPPER(OLD_DATA) LIKE #{item}</foreach>)</if> "
-            + "<if test='newDataLike != null'>AND (<foreach item='item' collection='newDataLike' separator=' OR ' >UPPER(NEW_DATA) LIKE #{item}</foreach>)</if> "
-            + "</where>"
-            + "</script>")
-    long countHistoryEvent(HistoryQueryImpl historyEventQuery);
+  @Select(
+      "<script>"
+          + "SELECT COUNT(ID) "
+          + "FROM HISTORY_EVENTS"
+          + "<where>"
+          // IN-Queries
+          + "<if test='businessProcessIdIn != null'>AND UPPER(BUSINESS_PROCESS_ID) IN (<foreach item='item' collection='businessProcessIdIn' separator=',' >#{item}</foreach>)</if> "
+          + "<if test='parentBusinessProcessIdIn != null'>AND UPPER(PARENT_BUSINESS_PROCESS_ID) IN (<foreach item='item' collection='parentBusinessProcessIdIn' separator=',' >#{item}</foreach>)</if> "
+          + "<if test='taskIdIn != null'>AND UPPER(TASK_ID) IN (<foreach item='item' collection='taskIdIn' separator=',' >#{item}</foreach>)</if> "
+          + "<if test='eventTypeIn != null'>AND UPPER(EVENT_TYPE) IN (<foreach item='item' collection='eventTypeIn' separator=',' >#{item}</foreach>)</if> "
+          + "<if test='createdIn !=null'> AND ( <foreach item='item' collection='createdIn' separator=',' > ( <if test='item.begin!=null'> CREATED &gt;= #{item.begin} </if> <if test='item.begin!=null and item.end!=null'> AND </if><if test='item.end!=null'> CREATED &lt;=#{item.end} </if>)</foreach>)</if> "
+          + "<if test='userIdIn != null'>AND UPPER(USER_ID) IN (<foreach item='item' collection='userIdIn' separator=',' >#{item}</foreach>)</if> "
+          + "<if test='domainIn != null'>AND UPPER(DOMAIN) IN (<foreach item='item' collection='domainIn' separator=',' >#{item}</foreach>)</if> "
+          + "<if test='workbasketKeyIn != null'>AND UPPER(WORKBASKET_KEY) IN (<foreach item='item' collection='workbasketKeyIn' separator=',' >#{item}</foreach>)</if> "
+          + "<if test='porCompanyIn != null'>AND UPPER(POR_COMPANY) IN (<foreach item='item' collection='porCompanyIn' separator=',' >#{item}</foreach>)</if> "
+          + "<if test='porSystemIn != null'>AND UPPER(POR_SYSTEM) IN (<foreach item='item' collection='porSystemIn' separator=',' >#{item}</foreach>)</if> "
+          + "<if test='porInstanceIn != null'>AND UPPER(POR_INSTANCE) IN (<foreach item='item' collection='porInstanceIn' separator=',' >#{item}</foreach>)</if> "
+          + "<if test='porTypeIn != null'>AND UPPER(POR_TYPE) IN (<foreach item='item' collection='porTypeIn' separator=',' >#{item}</foreach>)</if> "
+          + "<if test='porValueIn != null'>AND UPPER(POR_VALUE) IN (<foreach item='item' collection='porValueIn' separator=',' >#{item}</foreach>)</if> "
+          + "<if test='taskClassificationKeyIn != null'>AND UPPER(TASK_CLASSIFICATION_KEY) IN (<foreach item='item' collection='taskClassificationKeyIn' separator=',' >#{item}</foreach>)</if> "
+          + "<if test='taskClassificationCategoryIn != null'>AND UPPER(TASK_CLASSIFICATION_CATEGORY) IN (<foreach item='item' collection='taskClassificationCategoryIn' separator=',' >#{item}</foreach>)</if> "
+          + "<if test='attachmentClassificationKeyIn != null'>AND UPPER(ATTACHMENT_CLASSIFICATION_KEY) IN (<foreach item='item' collection='attachmentClassificationKeyIn' separator=',' >#{item}</foreach>)</if> "
+          + "<if test='commentIn != null'>AND UPPER(COMMENT) IN (<foreach item='item' collection='commentIn' separator=',' >#{item}</foreach>)</if> "
+          + "<if test='oldValueIn != null'>AND UPPER(OLD_VALUE) IN (<foreach item='item' collection='oldValueIn' separator=',' >#{item}</foreach>)</if> "
+          + "<if test='newValueIn != null'>AND UPPER(NEW_VALUE) IN (<foreach item='item' collection='newValueIn' separator=',' >#{item}</foreach>)</if> "
+          + "<if test='custom1In != null'>AND UPPER(CUSTOM_1) IN (<foreach item='item' collection='custom1In' separator=',' >#{item}</foreach>)</if> "
+          + "<if test='custom2In != null'>AND UPPER(CUSTOM_2) IN (<foreach item='item' collection='custom2In' separator=',' >#{item}</foreach>)</if> "
+          + "<if test='custom3In != null'>AND UPPER(CUSTOM_3) IN (<foreach item='item' collection='custom3In' separator=',' >#{item}</foreach>)</if> "
+          + "<if test='custom4In != null'>AND UPPER(CUSTOM_4) IN (<foreach item='item' collection='custom4In' separator=',' >#{item}</foreach>)</if> "
+          + "<if test='oldDataIn != null'>AND UPPER(OLD_DATA) IN (<foreach item='item' collection='oldDataIn' separator=',' >#{item}</foreach>)</if> "
+          + "<if test='newDataIn != null'>AND UPPER(NEW_DATA) IN (<foreach item='item' collection='newDataIn' separator=',' >#{item}</foreach>)</if> "
+          // LIKE-Queries
+          + "<if test='businessProcessIdLike != null'>AND (<foreach item='item' collection='businessProcessIdLike' separator='OR' > UPPER(BUSINESS_PROCESS_ID) LIKE #{item} </foreach>)</if> "
+          + "<if test='parentBusinessProcessIdLike != null'>AND (<foreach item='item' collection='parentBusinessProcessIdLike' separator=' OR ' >UPPER(PARENT_BUSINESS_PROCESS_ID) LIKE #{item}</foreach>)</if> "
+          + "<if test='taskIdLike != null'>AND (<foreach item='item' collection='taskIdLike' separator=' OR ' >UPPER(TASK_ID) LIKE #{item}</foreach>)</if> "
+          + "<if test='eventTypeLike != null'>AND (<foreach item='item' collection='eventTypeLike' separator=' OR ' >UPPER(EVENT_TYPE) LIKE #{item}</foreach>)</if> "
+          + "<if test='userIdLike != null'>AND (<foreach item='item' collection='userIdLike' separator=' OR ' >UPPER(USER_ID) LIKE #{item}</foreach>)</if> "
+          + "<if test='domainLike != null'>AND (<foreach item='item' collection='domainLike' separator=' OR ' >UPPER(DOMAIN) LIKE #{item}</foreach>)</if> "
+          + "<if test='workbasketKeyLike != null'>AND (<foreach item='item' collection='workbasketKeyLike' separator=' OR ' >UPPER(WORKBASKET_KEY) LIKE #{item}</foreach>)</if> "
+          + "<if test='porCompanyLike != null'>AND (<foreach item='item' collection='porCompanyLike' separator=' OR ' >UPPER(POR_COMPANY) LIKE #{item}</foreach>)</if> "
+          + "<if test='porSystemLike != null'>AND (<foreach item='item' collection='porSystemLike' separator=' OR ' >UPPER(POR_SYSTEM) LIKE #{item}</foreach>)</if> "
+          + "<if test='porInstanceLike != null'>AND (<foreach item='item' collection='porInstanceLike' separator=' OR ' >UPPER(POR_INSTANCE) LIKE #{item}</foreach>)</if> "
+          + "<if test='porTypeLike != null'>AND (<foreach item='item' collection='porTypeLike' separator=' OR ' >UPPER(POR_TYPE) LIKE #{item}</foreach>)</if> "
+          + "<if test='porValueLike != null'>AND (<foreach item='item' collection='porValueLike' separator=' OR ' >UPPER(POR_VALUE) LIKE #{item}</foreach>)</if> "
+          + "<if test='taskClassificationKeyLike != null'>AND (<foreach item='item' collection='taskClassificationKeyLike' separator=' OR ' >UPPER(TASK_CLASSIFICATION_KEY) LIKE #{item}</foreach>)</if> "
+          + "<if test='taskClassificationCategoryLike != null'>AND (<foreach item='item' collection='taskClassificationCategoryLike' separator=' OR ' >UPPER(TASK_CLASSIFICATION_CATEGORY) LIKE #{item}</foreach>)</if> "
+          + "<if test='attachmentClassificationKeyLike != null'>AND (<foreach item='item' collection='attachmentClassificationKeyLike' separator=' OR ' >UPPER(ATTACHMENT_CLASSIFICATION_KEY) LIKE #{item}</foreach>)</if> "
+          + "<if test='commentLike != null'>AND (<foreach item='item' collection='commentLike' separator=' OR ' >UPPER(COMMENT) LIKE #{item}</foreach>)</if> "
+          + "<if test='oldValueLike != null'>AND (<foreach item='item' collection='oldValueLike' separator=' OR ' >UPPER(OLD_VALUE) LIKE #{item}</foreach>)</if> "
+          + "<if test='newValueLike != null'>AND (<foreach item='item' collection='newValueLike' separator=' OR ' >UPPER(NEW_VALUE) LIKE #{item}</foreach>)</if> "
+          + "<if test='custom1Like != null'>AND (<foreach item='item' collection='custom1Like' separator=' OR ' >UPPER(CUSTOM_1) LIKE #{item}</foreach>)</if> "
+          + "<if test='custom2Like != null'>AND (<foreach item='item' collection='custom2Like' separator=' OR ' >UPPER(CUSTOM_2) LIKE #{item}</foreach>)</if> "
+          + "<if test='custom3Like != null'>AND (<foreach item='item' collection='custom3Like' separator=' OR ' >UPPER(CUSTOM_3) LIKE #{item}</foreach>)</if> "
+          + "<if test='custom4Like != null'>AND (<foreach item='item' collection='custom4Like' separator=' OR ' >UPPER(CUSTOM_4) LIKE #{item}</foreach>)</if> "
+          + "<if test='oldDataLike != null'>AND (<foreach item='item' collection='oldDataLike' separator=' OR ' >UPPER(OLD_DATA) LIKE #{item}</foreach>)</if> "
+          + "<if test='newDataLike != null'>AND (<foreach item='item' collection='newDataLike' separator=' OR ' >UPPER(NEW_DATA) LIKE #{item}</foreach>)</if> "
+          + "</where>"
+          + "</script>")
+  long countHistoryEvent(HistoryQueryImpl historyEventQuery);
 
-    @Select("<script>SELECT DISTINCT ${columnName} "
-            + "FROM HISTORY_EVENTS"
-            + "<where>"
-            // IN-Queries
-            + "<if test='idIn != null'>AND UPPER(ID) IN (<foreach item='item' collection='idIn' separator=',' >#{item}</foreach>)</if> "
-            + "<if test='businessProcessIdIn != null'>AND UPPER(BUSINESS_PROCESS_ID) IN (<foreach item='item' collection='businessProcessIdIn' separator=',' >#{item}</foreach>)</if> "
-            + "<if test='parentBusinessProcessIdIn != null'>AND UPPER(PARENT_BUSINESS_PROCESS_ID) IN (<foreach item='item' collection='parentBusinessProcessIdIn' separator=',' >#{item}</foreach>)</if> "
-            + "<if test='taskIdIn != null'>AND UPPER(TASK_ID) IN (<foreach item='item' collection='taskIdIn' separator=',' >#{item}</foreach>)</if> "
-            + "<if test='eventTypeIn != null'>AND UPPER(EVENT_TYPE) IN (<foreach item='item' collection='eventTypeIn' separator=',' >#{item}</foreach>)</if> "
-            + "<if test='createdIn !=null'> AND ( <foreach item='item' collection='createdIn' separator=',' > ( <if test='item.begin!=null'> CREATED &gt;= #{item.begin} </if> <if test='item.begin!=null and item.end!=null'> AND </if><if test='item.end!=null'> CREATED &lt;=#{item.end} </if>)</foreach>)</if> "
-            + "<if test='userIdIn != null'>AND UPPER(USER_ID) IN (<foreach item='item' collection='userIdIn' separator=',' >#{item}</foreach>)</if> "
-            + "<if test='domainIn != null'>AND UPPER(DOMAIN) IN (<foreach item='item' collection='domainIn' separator=',' >#{item}</foreach>)</if> "
-            + "<if test='workbasketKeyIn != null'>AND UPPER(WORKBASKET_KEY) IN (<foreach item='item' collection='workbasketKeyIn' separator=',' >#{item}</foreach>)</if> "
-            + "<if test='porCompanyIn != null'>AND UPPER(POR_COMPANY) IN (<foreach item='item' collection='porCompanyIn' separator=',' >#{item}</foreach>)</if> "
-            + "<if test='porSystemIn != null'>AND UPPER(POR_SYSTEM) IN (<foreach item='item' collection='porSystemIn' separator=',' >#{item}</foreach>)</if> "
-            + "<if test='porInstanceIn != null'>AND UPPER(POR_INSTANCE) IN (<foreach item='item' collection='porInstanceIn' separator=',' >#{item}</foreach>)</if> "
-            + "<if test='porTypeIn != null'>AND UPPER(POR_TYPE) IN (<foreach item='item' collection='porTypeIn' separator=',' >#{item}</foreach>)</if> "
-            + "<if test='porValueIn != null'>AND UPPER(POR_VALUE) IN (<foreach item='item' collection='porValueIn' separator=',' >#{item}</foreach>)</if> "
-            + "<if test='taskClassificationKeyIn != null'>AND UPPER(TASK_CLASSIFICATION_KEY) IN (<foreach item='item' collection='taskClassificationKeyIn' separator=',' >#{item}</foreach>)</if> "
-            + "<if test='taskClassificationCategoryIn != null'>AND UPPER(TASK_CLASSIFICATION_CATEGORY) IN (<foreach item='item' collection='taskClassificationCategoryIn' separator=',' >#{item}</foreach>)</if> "
-            + "<if test='attachmentClassificationKeyIn != null'>AND UPPER(ATTACHMENT_CLASSIFICATION_KEY) IN (<foreach item='item' collection='attachmentClassificationKeyIn' separator=',' >#{item}</foreach>)</if> "
-            + "<if test='commentIn != null'>AND UPPER(COMMENT) IN (<foreach item='item' collection='commentIn' separator=',' >#{item}</foreach>)</if> "
-            + "<if test='oldValueIn != null'>AND UPPER(OLD_VALUE) IN (<foreach item='item' collection='oldValueIn' separator=',' >#{item}</foreach>)</if> "
-            + "<if test='newValueIn != null'>AND UPPER(NEW_VALUE) IN (<foreach item='item' collection='newValueIn' separator=',' >#{item}</foreach>)</if> "
-            + "<if test='custom1In != null'>AND UPPER(CUSTOM_1) IN (<foreach item='item' collection='custom1In' separator=',' >#{item}</foreach>)</if> "
-            + "<if test='custom2In != null'>AND UPPER(CUSTOM_2) IN (<foreach item='item' collection='custom2In' separator=',' >#{item}</foreach>)</if> "
-            + "<if test='custom3In != null'>AND UPPER(CUSTOM_3) IN (<foreach item='item' collection='custom3In' separator=',' >#{item}</foreach>)</if> "
-            + "<if test='custom4In != null'>AND UPPER(CUSTOM_4) IN (<foreach item='item' collection='custom4In' separator=',' >#{item}</foreach>)</if> "
-            + "<if test='oldDataIn != null'>AND UPPER(OLD_DATA) IN (<foreach item='item' collection='oldDataIn' separator=',' >#{item}</foreach>)</if> "
-            + "<if test='newDataIn != null'>AND UPPER(NEW_DATA) IN (<foreach item='item' collection='newDataIn' separator=',' >#{item}</foreach>)</if> "
-            // LIKE-Queries
-            + "<if test='businessProcessIdLike != null'>AND (<foreach item='item' collection='businessProcessIdLike' separator='OR' > UPPER(BUSINESS_PROCESS_ID) LIKE #{item} </foreach>)</if> "
-            + "<if test='parentBusinessProcessIdLike != null'>AND (<foreach item='item' collection='parentBusinessProcessIdLike' separator=' OR ' >UPPER(PARENT_BUSINESS_PROCESS_ID) LIKE #{item}</foreach>)</if> "
-            + "<if test='taskIdLike != null'>AND (<foreach item='item' collection='taskIdLike' separator=' OR ' >UPPER(TASK_ID) LIKE #{item}</foreach>)</if> "
-            + "<if test='eventTypeLike != null'>AND (<foreach item='item' collection='eventTypeLike' separator=' OR ' >UPPER(EVENT_TYPE) LIKE #{item}</foreach>)</if> "
-            + "<if test='userIdLike != null'>AND (<foreach item='item' collection='userIdLike' separator=' OR ' >UPPER(USER_ID) LIKE #{item}</foreach>)</if> "
-            + "<if test='domainLike != null'>AND (<foreach item='item' collection='domainLike' separator=' OR ' >UPPER(DOMAIN) LIKE #{item}</foreach>)</if> "
-            + "<if test='workbasketKeyLike != null'>AND (<foreach item='item' collection='workbasketKeyLike' separator=' OR ' >UPPER(WORKBASKET_KEY) LIKE #{item}</foreach>)</if> "
-            + "<if test='porCompanyLike != null'>AND (<foreach item='item' collection='porCompanyLike' separator=' OR ' >UPPER(POR_COMPANY) LIKE #{item}</foreach>)</if> "
-            + "<if test='porSystemLike != null'>AND (<foreach item='item' collection='porSystemLike' separator=' OR ' >UPPER(POR_SYSTEM) LIKE #{item}</foreach>)</if> "
-            + "<if test='porInstanceLike != null'>AND (<foreach item='item' collection='porInstanceLike' separator=' OR ' >UPPER(POR_INSTANCE) LIKE #{item}</foreach>)</if> "
-            + "<if test='porTypeLike != null'>AND (<foreach item='item' collection='porTypeLike' separator=' OR ' >UPPER(POR_TYPE) LIKE #{item}</foreach>)</if> "
-            + "<if test='porValueLike != null'>AND (<foreach item='item' collection='porValueLike' separator=' OR ' >UPPER(POR_VALUE) LIKE #{item}</foreach>)</if> "
-            + "<if test='taskClassificationKeyLike != null'>AND (<foreach item='item' collection='taskClassificationKeyLike' separator=' OR ' >UPPER(TASK_CLASSIFICATION_KEY) LIKE #{item}</foreach>)</if> "
-            + "<if test='taskClassificationCategoryLike != null'>AND (<foreach item='item' collection='taskClassificationCategoryLike' separator=' OR ' >UPPER(TASK_CLASSIFICATION_CATEGORY) LIKE #{item}</foreach>)</if> "
-            + "<if test='attachmentClassificationKeyLike != null'>AND (<foreach item='item' collection='attachmentClassificationKeyLike' separator=' OR ' >UPPER(ATTACHMENT_CLASSIFICATION_KEY) LIKE #{item}</foreach>)</if> "
-            + "<if test='commentLike != null'>AND (<foreach item='item' collection='commentLike' separator=' OR ' >UPPER(COMMENT) LIKE #{item}</foreach>)</if> "
-            + "<if test='oldValueLike != null'>AND (<foreach item='item' collection='oldValueLike' separator=' OR ' >UPPER(OLD_VALUE) LIKE #{item}</foreach>)</if> "
-            + "<if test='newValueLike != null'>AND (<foreach item='item' collection='newValueLike' separator=' OR ' >UPPER(NEW_VALUE) LIKE #{item}</foreach>)</if> "
-            + "<if test='custom1Like != null'>AND (<foreach item='item' collection='custom1Like' separator=' OR ' >UPPER(CUSTOM_1) LIKE #{item}</foreach>)</if> "
-            + "<if test='custom2Like != null'>AND (<foreach item='item' collection='custom2Like' separator=' OR ' >UPPER(CUSTOM_2) LIKE #{item}</foreach>)</if> "
-            + "<if test='custom3Like != null'>AND (<foreach item='item' collection='custom3Like' separator=' OR ' >UPPER(CUSTOM_3) LIKE #{item}</foreach>)</if> "
-            + "<if test='custom4Like != null'>AND (<foreach item='item' collection='custom4Like' separator=' OR ' >UPPER(CUSTOM_4) LIKE #{item}</foreach>)</if> "
-            + "<if test='oldDataLike != null'>AND (<foreach item='item' collection='oldDataLike' separator=' OR ' >UPPER(OLD_DATA) LIKE #{item}</foreach>)</if> "
-            + "<if test='newDataLike != null'>AND (<foreach item='item' collection='newDataLike' separator=' OR ' >UPPER(NEW_DATA) LIKE #{item}</foreach>)</if> "
-            + "</where>"
-            + "<if test='!orderBy.isEmpty()'>ORDER BY <foreach item='item' collection='orderBy' separator=',' >${item}</foreach></if> "
-            + "</script>")
-    List<String> queryHistoryColumnValues(HistoryQueryImpl historyQuery);
+  @Select(
+      "<script>SELECT DISTINCT ${columnName} "
+          + "FROM HISTORY_EVENTS"
+          + "<where>"
+          // IN-Queries
+          + "<if test='idIn != null'>AND UPPER(ID) IN (<foreach item='item' collection='idIn' separator=',' >#{item}</foreach>)</if> "
+          + "<if test='businessProcessIdIn != null'>AND UPPER(BUSINESS_PROCESS_ID) IN (<foreach item='item' collection='businessProcessIdIn' separator=',' >#{item}</foreach>)</if> "
+          + "<if test='parentBusinessProcessIdIn != null'>AND UPPER(PARENT_BUSINESS_PROCESS_ID) IN (<foreach item='item' collection='parentBusinessProcessIdIn' separator=',' >#{item}</foreach>)</if> "
+          + "<if test='taskIdIn != null'>AND UPPER(TASK_ID) IN (<foreach item='item' collection='taskIdIn' separator=',' >#{item}</foreach>)</if> "
+          + "<if test='eventTypeIn != null'>AND UPPER(EVENT_TYPE) IN (<foreach item='item' collection='eventTypeIn' separator=',' >#{item}</foreach>)</if> "
+          + "<if test='createdIn !=null'> AND ( <foreach item='item' collection='createdIn' separator=',' > ( <if test='item.begin!=null'> CREATED &gt;= #{item.begin} </if> <if test='item.begin!=null and item.end!=null'> AND </if><if test='item.end!=null'> CREATED &lt;=#{item.end} </if>)</foreach>)</if> "
+          + "<if test='userIdIn != null'>AND UPPER(USER_ID) IN (<foreach item='item' collection='userIdIn' separator=',' >#{item}</foreach>)</if> "
+          + "<if test='domainIn != null'>AND UPPER(DOMAIN) IN (<foreach item='item' collection='domainIn' separator=',' >#{item}</foreach>)</if> "
+          + "<if test='workbasketKeyIn != null'>AND UPPER(WORKBASKET_KEY) IN (<foreach item='item' collection='workbasketKeyIn' separator=',' >#{item}</foreach>)</if> "
+          + "<if test='porCompanyIn != null'>AND UPPER(POR_COMPANY) IN (<foreach item='item' collection='porCompanyIn' separator=',' >#{item}</foreach>)</if> "
+          + "<if test='porSystemIn != null'>AND UPPER(POR_SYSTEM) IN (<foreach item='item' collection='porSystemIn' separator=',' >#{item}</foreach>)</if> "
+          + "<if test='porInstanceIn != null'>AND UPPER(POR_INSTANCE) IN (<foreach item='item' collection='porInstanceIn' separator=',' >#{item}</foreach>)</if> "
+          + "<if test='porTypeIn != null'>AND UPPER(POR_TYPE) IN (<foreach item='item' collection='porTypeIn' separator=',' >#{item}</foreach>)</if> "
+          + "<if test='porValueIn != null'>AND UPPER(POR_VALUE) IN (<foreach item='item' collection='porValueIn' separator=',' >#{item}</foreach>)</if> "
+          + "<if test='taskClassificationKeyIn != null'>AND UPPER(TASK_CLASSIFICATION_KEY) IN (<foreach item='item' collection='taskClassificationKeyIn' separator=',' >#{item}</foreach>)</if> "
+          + "<if test='taskClassificationCategoryIn != null'>AND UPPER(TASK_CLASSIFICATION_CATEGORY) IN (<foreach item='item' collection='taskClassificationCategoryIn' separator=',' >#{item}</foreach>)</if> "
+          + "<if test='attachmentClassificationKeyIn != null'>AND UPPER(ATTACHMENT_CLASSIFICATION_KEY) IN (<foreach item='item' collection='attachmentClassificationKeyIn' separator=',' >#{item}</foreach>)</if> "
+          + "<if test='commentIn != null'>AND UPPER(COMMENT) IN (<foreach item='item' collection='commentIn' separator=',' >#{item}</foreach>)</if> "
+          + "<if test='oldValueIn != null'>AND UPPER(OLD_VALUE) IN (<foreach item='item' collection='oldValueIn' separator=',' >#{item}</foreach>)</if> "
+          + "<if test='newValueIn != null'>AND UPPER(NEW_VALUE) IN (<foreach item='item' collection='newValueIn' separator=',' >#{item}</foreach>)</if> "
+          + "<if test='custom1In != null'>AND UPPER(CUSTOM_1) IN (<foreach item='item' collection='custom1In' separator=',' >#{item}</foreach>)</if> "
+          + "<if test='custom2In != null'>AND UPPER(CUSTOM_2) IN (<foreach item='item' collection='custom2In' separator=',' >#{item}</foreach>)</if> "
+          + "<if test='custom3In != null'>AND UPPER(CUSTOM_3) IN (<foreach item='item' collection='custom3In' separator=',' >#{item}</foreach>)</if> "
+          + "<if test='custom4In != null'>AND UPPER(CUSTOM_4) IN (<foreach item='item' collection='custom4In' separator=',' >#{item}</foreach>)</if> "
+          + "<if test='oldDataIn != null'>AND UPPER(OLD_DATA) IN (<foreach item='item' collection='oldDataIn' separator=',' >#{item}</foreach>)</if> "
+          + "<if test='newDataIn != null'>AND UPPER(NEW_DATA) IN (<foreach item='item' collection='newDataIn' separator=',' >#{item}</foreach>)</if> "
+          // LIKE-Queries
+          + "<if test='businessProcessIdLike != null'>AND (<foreach item='item' collection='businessProcessIdLike' separator='OR' > UPPER(BUSINESS_PROCESS_ID) LIKE #{item} </foreach>)</if> "
+          + "<if test='parentBusinessProcessIdLike != null'>AND (<foreach item='item' collection='parentBusinessProcessIdLike' separator=' OR ' >UPPER(PARENT_BUSINESS_PROCESS_ID) LIKE #{item}</foreach>)</if> "
+          + "<if test='taskIdLike != null'>AND (<foreach item='item' collection='taskIdLike' separator=' OR ' >UPPER(TASK_ID) LIKE #{item}</foreach>)</if> "
+          + "<if test='eventTypeLike != null'>AND (<foreach item='item' collection='eventTypeLike' separator=' OR ' >UPPER(EVENT_TYPE) LIKE #{item}</foreach>)</if> "
+          + "<if test='userIdLike != null'>AND (<foreach item='item' collection='userIdLike' separator=' OR ' >UPPER(USER_ID) LIKE #{item}</foreach>)</if> "
+          + "<if test='domainLike != null'>AND (<foreach item='item' collection='domainLike' separator=' OR ' >UPPER(DOMAIN) LIKE #{item}</foreach>)</if> "
+          + "<if test='workbasketKeyLike != null'>AND (<foreach item='item' collection='workbasketKeyLike' separator=' OR ' >UPPER(WORKBASKET_KEY) LIKE #{item}</foreach>)</if> "
+          + "<if test='porCompanyLike != null'>AND (<foreach item='item' collection='porCompanyLike' separator=' OR ' >UPPER(POR_COMPANY) LIKE #{item}</foreach>)</if> "
+          + "<if test='porSystemLike != null'>AND (<foreach item='item' collection='porSystemLike' separator=' OR ' >UPPER(POR_SYSTEM) LIKE #{item}</foreach>)</if> "
+          + "<if test='porInstanceLike != null'>AND (<foreach item='item' collection='porInstanceLike' separator=' OR ' >UPPER(POR_INSTANCE) LIKE #{item}</foreach>)</if> "
+          + "<if test='porTypeLike != null'>AND (<foreach item='item' collection='porTypeLike' separator=' OR ' >UPPER(POR_TYPE) LIKE #{item}</foreach>)</if> "
+          + "<if test='porValueLike != null'>AND (<foreach item='item' collection='porValueLike' separator=' OR ' >UPPER(POR_VALUE) LIKE #{item}</foreach>)</if> "
+          + "<if test='taskClassificationKeyLike != null'>AND (<foreach item='item' collection='taskClassificationKeyLike' separator=' OR ' >UPPER(TASK_CLASSIFICATION_KEY) LIKE #{item}</foreach>)</if> "
+          + "<if test='taskClassificationCategoryLike != null'>AND (<foreach item='item' collection='taskClassificationCategoryLike' separator=' OR ' >UPPER(TASK_CLASSIFICATION_CATEGORY) LIKE #{item}</foreach>)</if> "
+          + "<if test='attachmentClassificationKeyLike != null'>AND (<foreach item='item' collection='attachmentClassificationKeyLike' separator=' OR ' >UPPER(ATTACHMENT_CLASSIFICATION_KEY) LIKE #{item}</foreach>)</if> "
+          + "<if test='commentLike != null'>AND (<foreach item='item' collection='commentLike' separator=' OR ' >UPPER(COMMENT) LIKE #{item}</foreach>)</if> "
+          + "<if test='oldValueLike != null'>AND (<foreach item='item' collection='oldValueLike' separator=' OR ' >UPPER(OLD_VALUE) LIKE #{item}</foreach>)</if> "
+          + "<if test='newValueLike != null'>AND (<foreach item='item' collection='newValueLike' separator=' OR ' >UPPER(NEW_VALUE) LIKE #{item}</foreach>)</if> "
+          + "<if test='custom1Like != null'>AND (<foreach item='item' collection='custom1Like' separator=' OR ' >UPPER(CUSTOM_1) LIKE #{item}</foreach>)</if> "
+          + "<if test='custom2Like != null'>AND (<foreach item='item' collection='custom2Like' separator=' OR ' >UPPER(CUSTOM_2) LIKE #{item}</foreach>)</if> "
+          + "<if test='custom3Like != null'>AND (<foreach item='item' collection='custom3Like' separator=' OR ' >UPPER(CUSTOM_3) LIKE #{item}</foreach>)</if> "
+          + "<if test='custom4Like != null'>AND (<foreach item='item' collection='custom4Like' separator=' OR ' >UPPER(CUSTOM_4) LIKE #{item}</foreach>)</if> "
+          + "<if test='oldDataLike != null'>AND (<foreach item='item' collection='oldDataLike' separator=' OR ' >UPPER(OLD_DATA) LIKE #{item}</foreach>)</if> "
+          + "<if test='newDataLike != null'>AND (<foreach item='item' collection='newDataLike' separator=' OR ' >UPPER(NEW_DATA) LIKE #{item}</foreach>)</if> "
+          + "</where>"
+          + "<if test='!orderBy.isEmpty()'>ORDER BY <foreach item='item' collection='orderBy' separator=',' >${item}</foreach></if> "
+          + "</script>")
+  List<String> queryHistoryColumnValues(HistoryQueryImpl historyQuery);
 }

history/taskana-simplehistory-provider/src/main/java/pro/taskana/simplehistory/query/HistoryQueryColumnName.java

@@ -3,46 +3,48 @@ package pro.taskana.simplehistory.query;
 import pro.taskana.QueryColumnName;
 
 /**
- * Enum containing the column names for @see pro.taskana.simplehistory.mappings.HistoryQueryMapper#queryHistoryColumnValues(pro.taskana.simplehistory.impl.HistoryQueryImpl).
+ * Enum containing the column names for @see
+ * pro.taskana.simplehistory.mappings.HistoryQueryMapper#queryHistoryColumnValues(pro.taskana.simplehistory.impl.HistoryQueryImpl).
  *
  * @author bv
  */
 public enum HistoryQueryColumnName implements QueryColumnName {
-    ID("id"),
-    BUSINESS_PROCESS_ID("business_process_id"),
-    PARENT_BUSINESS_PROCESS_ID("parent_business_process_id"),
-    TASK_ID("task_id"),
-    EVENT_TYPE("event_type"),
-    CREATED("created"),
-    USER_ID("user_id"),
-    DOMAIN("domain"),
-    WORKBASKET_KEY("workbasket_key"),
-    POR_COMPANY("por_company"),
-    POR_SYSTEM("por_system"),
-    POR_INSTANCE("por_instance"),
-    POR_TYPE("por_type"),
-    POR_VALUE("por_value"),
-    TASK_CLASSIFICATION_KEY("task_classification_key"),
-    TASK_CLASSIFICATION_CATEGORY("task_classification_category"),
-    ATTACHMENT_CLASSIFICATION_KEY("attachment_classification_key"),
-    COMMENT("comment"),
-    OLD_VALUE("old_value"),
-    NEW_VALUE("new_value"),
-    CUSTOM_1("custom_1"),
-    CUSTOM_2("custom_2"),
-    CUSTOM_3("custom_3"),
-    CUSTOM_4("custom_4"),
-    OLD_DATA("old_data"),
-    NEW_DATA("new_data"),
-    TYPE("type");
+  ID("id"),
+  BUSINESS_PROCESS_ID("business_process_id"),
+  PARENT_BUSINESS_PROCESS_ID("parent_business_process_id"),
+  TASK_ID("task_id"),
+  EVENT_TYPE("event_type"),
+  CREATED("created"),
+  USER_ID("user_id"),
+  DOMAIN("domain"),
+  WORKBASKET_KEY("workbasket_key"),
+  POR_COMPANY("por_company"),
+  POR_SYSTEM("por_system"),
+  POR_INSTANCE("por_instance"),
+  POR_TYPE("por_type"),
+  POR_VALUE("por_value"),
+  TASK_CLASSIFICATION_KEY("task_classification_key"),
+  TASK_CLASSIFICATION_CATEGORY("task_classification_category"),
+  ATTACHMENT_CLASSIFICATION_KEY("attachment_classification_key"),
+  COMMENT("comment"),
+  OLD_VALUE("old_value"),
+  NEW_VALUE("new_value"),
+  CUSTOM_1("custom_1"),
+  CUSTOM_2("custom_2"),
+  CUSTOM_3("custom_3"),
+  CUSTOM_4("custom_4"),
+  OLD_DATA("old_data"),
+  NEW_DATA("new_data"),
+  TYPE("type");
 
-    private String name;
-    HistoryQueryColumnName(String name) {
-        this.name = name;
-    }
+  private String name;
 
-    @Override
-    public String toString() {
-        return name;
-    }
+  HistoryQueryColumnName(String name) {
+    this.name = name;
+  }
+
+  @Override
+  public String toString() {
+    return name;
+  }
 }

history/taskana-simplehistory-provider/src/test/java/acceptance/AbstractAccTest.java

@@ -1,5 +1,6 @@
 package acceptance;
 
+import configuration.DBWriter;
 import java.io.File;
 import java.io.FileInputStream;
 import java.io.FileNotFoundException;
@@ -7,234 +8,239 @@ import java.io.IOException;
 import java.io.InputStream;
 import java.sql.SQLException;
 import java.util.Properties;
-
 import javax.sql.DataSource;
-
 import org.apache.ibatis.datasource.pooled.PooledDataSource;
 import org.junit.BeforeClass;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
-import configuration.DBWriter;
 import pro.taskana.configuration.TaskanaEngineConfiguration;
 import pro.taskana.simplehistory.impl.HistoryEventImpl;
 import pro.taskana.simplehistory.impl.SimpleHistoryServiceImpl;
 
-/**
- * Set up database for tests.
- */
+/** Set up database for tests. */
 public class AbstractAccTest {
 
-    public static SimpleHistoryServiceImpl historyService;
+  private static final Logger LOGGER = LoggerFactory.getLogger(AbstractAccTest.class);
+  private static final int POOL_TIME_TO_WAIT = 50;
+  public static SimpleHistoryServiceImpl historyService;
+  protected static TaskanaEngineConfiguration taskanaEngineConfiguration;
+  private static DataSource dataSource = null;
+  private static String schemaName = null;
 
-    protected static TaskanaEngineConfiguration taskanaEngineConfiguration;
+  protected AbstractAccTest() {
+    // not called
+  }
 
-    private static DataSource dataSource = null;
+  @BeforeClass
+  public static void setupTest() throws Exception {
+    resetDb(null);
+  }
 
-    private static String schemaName = null;
-
-    private static final Logger LOGGER = LoggerFactory.getLogger(AbstractAccTest.class);
-
-    private static final int POOL_TIME_TO_WAIT = 50;
-
-    protected AbstractAccTest() {
-        // not called
-    }
-
-    @BeforeClass
-    public static void setupTest() throws Exception {
-        resetDb(null);
-    }
-
-    public static void resetDb(String schemaName) throws SQLException {
-        DataSource dataSource = getDataSource();
-        DBWriter writer = new DBWriter();
-        taskanaEngineConfiguration = new TaskanaEngineConfiguration(dataSource, false,
+  public static void resetDb(String schemaName) throws SQLException {
+    DataSource dataSource = getDataSource();
+    DBWriter writer = new DBWriter();
+    taskanaEngineConfiguration =
+        new TaskanaEngineConfiguration(
+            dataSource,
+            false,
             schemaName != null && !schemaName.isEmpty() ? schemaName : getSchemaName());
-        historyService = new SimpleHistoryServiceImpl();
-        historyService.initialize(taskanaEngineConfiguration);
+    historyService = new SimpleHistoryServiceImpl();
+    historyService.initialize(taskanaEngineConfiguration);
 
-        writer.clearDB(dataSource);
-        writer.generateTestData(dataSource);
+    writer.clearDB(dataSource);
+    writer.generateTestData(dataSource);
+  }
+
+  /**
+   * returns the DataSource used for Junit test. If the file {user.home}/taskanaUnitTest.properties
+   * is present, the Datasource is created according to the properties jdbcDriver, jdbcUrl,
+   * dbUserName and dbPassword. Assuming, the database has the name tskdb, a sample properties file
+   * for DB2 looks as follows: jdbcDriver=com.ibm.db2.jcc.DB2Driver
+   * jdbcUrl=jdbc:db2://localhost:50000/tskdb dbUserName=db2user dbPassword=db2password If any of
+   * these properties is missing, or the file doesn't exist, the default Datasource for h2 in-memory
+   * db is created.
+   *
+   * @return dataSource for unit test
+   */
+  public static DataSource getDataSource() {
+    if (dataSource == null) {
+      String userHomeDirectroy = System.getProperty("user.home");
+      String propertiesFileName = userHomeDirectroy + "/taskanaUnitTest.properties";
+      File f = new File(propertiesFileName);
+      if (f.exists() && !f.isDirectory()) {
+        dataSource = createDataSourceFromProperties(propertiesFileName);
+      } else {
+        dataSource = createDefaultDataSource();
+      }
+    }
+    return dataSource;
+  }
+
+  /**
+   * returns the SchemaName used for Junit test. If the file {user.home}/taskanaUnitTest.properties
+   * is present, the SchemaName is created according to the property schemaName. a sample properties
+   * file for DB2 looks as follows: jdbcDriver=com.ibm.db2.jcc.DB2Driver
+   * jdbcUrl=jdbc:db2://localhost:50000/tskdb dbUserName=db2user dbPassword=db2password
+   * schemaName=TASKANA If any of these properties is missing, or the file doesn't exist, the
+   * default schemaName TASKANA is created used.
+   *
+   * @return String for unit test
+   */
+  public static String getSchemaName() {
+    if (schemaName == null) {
+      String userHomeDirectroy = System.getProperty("user.home");
+      String propertiesFileName = userHomeDirectroy + "/taskanaUnitTest.properties";
+      File f = new File(propertiesFileName);
+      if (f.exists() && !f.isDirectory()) {
+        schemaName = getSchemaNameFromPropertiesObject(propertiesFileName);
+      } else {
+        schemaName = "TASKANA";
+      }
+    }
+    return schemaName;
+  }
+
+  /**
+   * create historyEvent object.
+   *
+   * @param workbasketKey the workbasketKey, the task currently resides in.
+   * @param taskId the taskid the event belongs to.
+   * @param type the type of the event.
+   * @param comment the individual comment.
+   * @param previousWorkbasketId the workbasketId of the previous workbasket (if applicable).
+   * @return History event object created.
+   */
+  public static HistoryEventImpl createHistoryEvent(
+      String workbasketKey,
+      String taskId,
+      String type,
+      String comment,
+      String previousWorkbasketId) {
+    HistoryEventImpl historyEvent = new HistoryEventImpl();
+    historyEvent.setWorkbasketKey(workbasketKey);
+    historyEvent.setTaskId(taskId);
+    historyEvent.setEventType(type);
+    historyEvent.setComment(comment);
+    historyEvent.setOldValue(previousWorkbasketId);
+    return historyEvent;
+  }
+
+  /**
+   * create Default DataSource for in-memory database.
+   *
+   * @return the TASKANA default datasource.
+   */
+  private static DataSource createDefaultDataSource() {
+
+    String jdbcDriver = "org.h2.Driver";
+    String jdbcUrl = "jdbc:h2:mem:taskana;IGNORECASE=TRUE;LOCK_MODE=0";
+    String dbUserName = "sa";
+    String dbPassword = "sa";
+    DataSource ds =
+        new PooledDataSource(
+            Thread.currentThread().getContextClassLoader(),
+            jdbcDriver,
+            jdbcUrl,
+            dbUserName,
+            dbPassword);
+    ((PooledDataSource) ds).setPoolTimeToWait(POOL_TIME_TO_WAIT);
+    ((PooledDataSource) ds)
+        .forceCloseAll(); // otherwise the MyBatis pool is not initialized correctly
+
+    return ds;
+  }
+
+  /**
+   * create data source from properties file.
+   *
+   * @param propertiesFileName the name of the properties file.
+   * @return the datasource constructed from the information in the properties file.
+   */
+  private static DataSource createDataSourceFromProperties(String propertiesFileName) {
+    DataSource ds = null;
+    try (InputStream input = new FileInputStream(propertiesFileName)) {
+      Properties prop = new Properties();
+      prop.load(input);
+      boolean propertiesFileIsComplete = true;
+      String warningMessage = "";
+      String jdbcDriver = prop.getProperty("jdbcDriver");
+      if (jdbcDriver == null || jdbcDriver.length() == 0) {
+        propertiesFileIsComplete = false;
+        warningMessage += ", jdbcDriver property missing";
+      }
+      String jdbcUrl = prop.getProperty("jdbcUrl");
+      if (jdbcUrl == null || jdbcUrl.length() == 0) {
+        propertiesFileIsComplete = false;
+        warningMessage += ", jdbcUrl property missing";
+      }
+      String dbUserName = prop.getProperty("dbUserName");
+      if (dbUserName == null || dbUserName.length() == 0) {
+        propertiesFileIsComplete = false;
+        warningMessage += ", dbUserName property missing";
+      }
+      String dbPassword = prop.getProperty("dbPassword");
+      if (dbPassword == null || dbPassword.length() == 0) {
+        propertiesFileIsComplete = false;
+        warningMessage += ", dbPassword property missing";
+      }
+
+      if (propertiesFileIsComplete) {
+        ds =
+            new PooledDataSource(
+                Thread.currentThread().getContextClassLoader(),
+                jdbcDriver,
+                jdbcUrl,
+                dbUserName,
+                dbPassword);
+        ((PooledDataSource) ds)
+            .forceCloseAll(); // otherwise the MyBatis pool is not initialized correctly
+      } else {
+        LOGGER.warn("propertiesFile " + propertiesFileName + " is incomplete" + warningMessage);
+        LOGGER.warn("Using default Datasource for Test");
+        ds = createDefaultDataSource();
+      }
+
+    } catch (FileNotFoundException e) {
+      LOGGER.warn("createDataSourceFromProperties caught Exception " + e);
+      LOGGER.warn("Using default Datasource for Test");
+      ds = createDefaultDataSource();
+    } catch (IOException e) {
+      LOGGER.warn("createDataSourceFromProperties caught Exception " + e);
+      LOGGER.warn("Using default Datasource for Test");
+      ds = createDefaultDataSource();
     }
 
-    /**
-     * returns the DataSource used for Junit test. If the file {user.home}/taskanaUnitTest.properties is present, the
-     * Datasource is created according to the properties jdbcDriver, jdbcUrl, dbUserName and dbPassword. Assuming, the
-     * database has the name tskdb, a sample properties file for DB2 looks as follows:
-     * jdbcDriver=com.ibm.db2.jcc.DB2Driver jdbcUrl=jdbc:db2://localhost:50000/tskdb dbUserName=db2user
-     * dbPassword=db2password If any of these properties is missing, or the file doesn't exist, the default Datasource
-     * for h2 in-memory db is created.
-     *
-     * @return dataSource for unit test
-     */
-    public static DataSource getDataSource() {
-        if (dataSource == null) {
-            String userHomeDirectroy = System.getProperty("user.home");
-            String propertiesFileName = userHomeDirectroy + "/taskanaUnitTest.properties";
-            File f = new File(propertiesFileName);
-            if (f.exists() && !f.isDirectory()) {
-                dataSource = createDataSourceFromProperties(propertiesFileName);
-            } else {
-                dataSource = createDefaultDataSource();
-            }
-        }
-        return dataSource;
+    return ds;
+  }
+
+  private static String getSchemaNameFromPropertiesObject(String propertiesFileName) {
+    String schemaName = "TASKANA";
+    try (InputStream input = new FileInputStream(propertiesFileName)) {
+      Properties prop = new Properties();
+      prop.load(input);
+      boolean propertiesFileIsComplete = true;
+      String warningMessage = "";
+      schemaName = prop.getProperty("schemaName");
+      if (schemaName == null || schemaName.length() == 0) {
+        propertiesFileIsComplete = false;
+        warningMessage += ", schemaName property missing";
+      }
+
+      if (!propertiesFileIsComplete) {
+        LOGGER.warn("propertiesFile " + propertiesFileName + " is incomplete" + warningMessage);
+        LOGGER.warn("Using default Datasource for Test");
+        schemaName = "TASKANA";
+      }
+
+    } catch (FileNotFoundException e) {
+      LOGGER.warn("getSchemaNameFromPropertiesObject caught Exception " + e);
+      LOGGER.warn("Using default schemaName for Test");
+    } catch (IOException e) {
+      LOGGER.warn("createDataSourceFromProperties caught Exception " + e);
+      LOGGER.warn("Using default Datasource for Test");
     }
 
-    /**
-     * create Default DataSource for in-memory database.
-     *
-     * @return the TASKANA default datasource.
-     */
-    private static DataSource createDefaultDataSource() {
-
-        String jdbcDriver = "org.h2.Driver";
-        String jdbcUrl = "jdbc:h2:mem:taskana;IGNORECASE=TRUE;LOCK_MODE=0";
-        String dbUserName = "sa";
-        String dbPassword = "sa";
-        DataSource ds = new PooledDataSource(Thread.currentThread().getContextClassLoader(), jdbcDriver,
-            jdbcUrl, dbUserName, dbPassword);
-        ((PooledDataSource) ds).setPoolTimeToWait(POOL_TIME_TO_WAIT);
-        ((PooledDataSource) ds).forceCloseAll();  // otherwise the MyBatis pool is not initialized correctly
-
-        return ds;
-    }
-
-    /**
-     * returns the SchemaName used for Junit test. If the file {user.home}/taskanaUnitTest.properties is present, the
-     * SchemaName is created according to the property schemaName. a sample properties file for DB2 looks as follows:
-     * jdbcDriver=com.ibm.db2.jcc.DB2Driver jdbcUrl=jdbc:db2://localhost:50000/tskdb dbUserName=db2user
-     * dbPassword=db2password schemaName=TASKANA If any of these properties is missing, or the file doesn't exist, the
-     * default schemaName TASKANA is created used.
-     *
-     * @return String for unit test
-     */
-    public static String getSchemaName() {
-        if (schemaName == null) {
-            String userHomeDirectroy = System.getProperty("user.home");
-            String propertiesFileName = userHomeDirectroy + "/taskanaUnitTest.properties";
-            File f = new File(propertiesFileName);
-            if (f.exists() && !f.isDirectory()) {
-                schemaName = getSchemaNameFromPropertiesObject(propertiesFileName);
-            } else {
-                schemaName = "TASKANA";
-            }
-        }
-        return schemaName;
-    }
-
-    /**
-     * create historyEvent object.
-     *
-     * @param workbasketKey
-     *            the workbasketKey, the task currently resides in.
-     * @param taskId
-     *            the taskid the event belongs to.
-     * @param type
-     *            the type of the event.
-     * @param comment
-     *            the individual comment.
-     * @param previousWorkbasketId
-     *            the workbasketId of the previous workbasket (if applicable).
-     * @return History event object created.
-     */
-    public static HistoryEventImpl createHistoryEvent(String workbasketKey, String taskId, String type, String comment,
-        String previousWorkbasketId) {
-        HistoryEventImpl historyEvent = new HistoryEventImpl();
-        historyEvent.setWorkbasketKey(workbasketKey);
-        historyEvent.setTaskId(taskId);
-        historyEvent.setEventType(type);
-        historyEvent.setComment(comment);
-        historyEvent.setOldValue(previousWorkbasketId);
-        return historyEvent;
-    }
-
-    /**
-     * create data source from properties file.
-     *
-     * @param propertiesFileName
-     *            the name of the properties file.
-     * @return the datasource constructed from the information in the properties file.
-     */
-    private static DataSource createDataSourceFromProperties(String propertiesFileName) {
-        DataSource ds = null;
-        try (InputStream input = new FileInputStream(propertiesFileName)) {
-            Properties prop = new Properties();
-            prop.load(input);
-            boolean propertiesFileIsComplete = true;
-            String warningMessage = "";
-            String jdbcDriver = prop.getProperty("jdbcDriver");
-            if (jdbcDriver == null || jdbcDriver.length() == 0) {
-                propertiesFileIsComplete = false;
-                warningMessage += ", jdbcDriver property missing";
-            }
-            String jdbcUrl = prop.getProperty("jdbcUrl");
-            if (jdbcUrl == null || jdbcUrl.length() == 0) {
-                propertiesFileIsComplete = false;
-                warningMessage += ", jdbcUrl property missing";
-            }
-            String dbUserName = prop.getProperty("dbUserName");
-            if (dbUserName == null || dbUserName.length() == 0) {
-                propertiesFileIsComplete = false;
-                warningMessage += ", dbUserName property missing";
-            }
-            String dbPassword = prop.getProperty("dbPassword");
-            if (dbPassword == null || dbPassword.length() == 0) {
-                propertiesFileIsComplete = false;
-                warningMessage += ", dbPassword property missing";
-            }
-
-            if (propertiesFileIsComplete) {
-                ds = new PooledDataSource(Thread.currentThread().getContextClassLoader(), jdbcDriver,
-                    jdbcUrl, dbUserName, dbPassword);
-                ((PooledDataSource) ds).forceCloseAll();  // otherwise the MyBatis pool is not initialized correctly
-            } else {
-                LOGGER.warn("propertiesFile " + propertiesFileName + " is incomplete" + warningMessage);
-                LOGGER.warn("Using default Datasource for Test");
-                ds = createDefaultDataSource();
-            }
-
-        } catch (FileNotFoundException e) {
-            LOGGER.warn("createDataSourceFromProperties caught Exception " + e);
-            LOGGER.warn("Using default Datasource for Test");
-            ds = createDefaultDataSource();
-        } catch (IOException e) {
-            LOGGER.warn("createDataSourceFromProperties caught Exception " + e);
-            LOGGER.warn("Using default Datasource for Test");
-            ds = createDefaultDataSource();
-        }
-
-        return ds;
-    }
-
-    private static String getSchemaNameFromPropertiesObject(String propertiesFileName) {
-        String schemaName = "TASKANA";
-        try (InputStream input = new FileInputStream(propertiesFileName)) {
-            Properties prop = new Properties();
-            prop.load(input);
-            boolean propertiesFileIsComplete = true;
-            String warningMessage = "";
-            schemaName = prop.getProperty("schemaName");
-            if (schemaName == null || schemaName.length() == 0) {
-                propertiesFileIsComplete = false;
-                warningMessage += ", schemaName property missing";
-            }
-
-            if (!propertiesFileIsComplete) {
-                LOGGER.warn("propertiesFile " + propertiesFileName + " is incomplete" + warningMessage);
-                LOGGER.warn("Using default Datasource for Test");
-                schemaName = "TASKANA";
-            }
-
-        } catch (FileNotFoundException e) {
-            LOGGER.warn("getSchemaNameFromPropertiesObject caught Exception " + e);
-            LOGGER.warn("Using default schemaName for Test");
-        } catch (IOException e) {
-            LOGGER.warn("createDataSourceFromProperties caught Exception " + e);
-            LOGGER.warn("Using default Datasource for Test");
-        }
-
-        return schemaName;
-    }
+    return schemaName;
+  }
 }

history/taskana-simplehistory-provider/src/test/java/acceptance/query/QueryHistoryAccTest.java

@@ -5,308 +5,345 @@ import static org.junit.Assert.assertEquals;
 import static org.junit.Assert.assertNotEquals;
 import static org.junit.Assert.assertTrue;
 
+import acceptance.AbstractAccTest;
 import java.time.Instant;
 import java.util.List;
-
 import org.junit.Test;
 
-import acceptance.AbstractAccTest;
 import pro.taskana.BaseQuery.SortDirection;
 import pro.taskana.TimeInterval;
 import pro.taskana.simplehistory.impl.HistoryEventImpl;
 import pro.taskana.simplehistory.query.HistoryQuery;
 import pro.taskana.simplehistory.query.HistoryQueryColumnName;
 
-/**
- * Test for History queries.
- */
+/** Test for History queries. */
 public class QueryHistoryAccTest extends AbstractAccTest {
 
-    public QueryHistoryAccTest() {
-        super();
-    }
+  public QueryHistoryAccTest() {
+    super();
+  }
 
-    @Test
-    public void testListValuesAscendingAndDescending() {
-        List<String> defaultList = historyService.createHistoryQuery().listValues(HistoryQueryColumnName.COMMENT, null);
-        List<String> ascendingList = historyService.createHistoryQuery()
+  @Test
+  public void testListValuesAscendingAndDescending() {
+    List<String> defaultList =
+        historyService.createHistoryQuery().listValues(HistoryQueryColumnName.COMMENT, null);
+    List<String> ascendingList =
+        historyService
+            .createHistoryQuery()
             .listValues(HistoryQueryColumnName.COMMENT, SortDirection.ASCENDING);
-        List<String> descendingList = historyService.createHistoryQuery()
+    List<String> descendingList =
+        historyService
+            .createHistoryQuery()
             .listValues(HistoryQueryColumnName.COMMENT, SortDirection.DESCENDING);
 
-        assertEquals(3, ascendingList.size());
-        assertArrayEquals(defaultList.toArray(), ascendingList.toArray());
-        assertEquals(ascendingList.get(2), descendingList.get(0));
-    }
+    assertEquals(3, ascendingList.size());
+    assertArrayEquals(defaultList.toArray(), ascendingList.toArray());
+    assertEquals(ascendingList.get(2), descendingList.get(0));
+  }
 
-    @Test
-    public void testComplexQuery() {
-        HistoryQuery query = historyService.createHistoryQuery()
+  @Test
+  public void testComplexQuery() {
+    HistoryQuery query =
+        historyService
+            .createHistoryQuery()
             .businessProcessIdLike("just some string", "BPI:%")
             .domainLike("%A")
             .orderByCreated(SortDirection.DESCENDING);
 
-        List<HistoryEventImpl> results = query.list();
-        assertEquals(2, results.size());
-        assertEquals("admin", results.get(0).getUserId());
-        assertEquals("peter", results.get(1).getUserId());
+    List<HistoryEventImpl> results = query.list();
+    assertEquals(2, results.size());
+    assertEquals("admin", results.get(0).getUserId());
+    assertEquals("peter", results.get(1).getUserId());
 
-        results = query.orderByUserId(SortDirection.DESCENDING).list();
-        assertEquals(2, results.size());
-        assertEquals("admin", results.get(0).getUserId());
-        assertEquals("peter", results.get(1).getUserId());
-        assertEquals(3, query.domainLike().count());
+    results = query.orderByUserId(SortDirection.DESCENDING).list();
+    assertEquals(2, results.size());
+    assertEquals("admin", results.get(0).getUserId());
+    assertEquals("peter", results.get(1).getUserId());
+    assertEquals(3, query.domainLike().count());
+  }
 
-    }
+  @Test
+  public void testQueryListOffset() {
+    List<HistoryEventImpl> result = historyService.createHistoryQuery().list(1, 2);
+    List<HistoryEventImpl> wrongList = historyService.createHistoryQuery().list();
 
-    @Test
-    public void testQueryListOffset() {
-        List<HistoryEventImpl> result = historyService.createHistoryQuery().list(1, 2);
-        List<HistoryEventImpl> wrongList = historyService.createHistoryQuery().list();
+    assertEquals(2, result.size());
 
-        assertEquals(2, result.size());
+    assertNotEquals(wrongList.get(0).getUserId(), result.get(0).getUserId());
+    assertEquals(wrongList.get(1).getUserId(), result.get(0).getUserId());
+  }
 
-        assertNotEquals(wrongList.get(0).getUserId(), result.get(0).getUserId());
-        assertEquals(wrongList.get(1).getUserId(), result.get(0).getUserId());
-    }
+  @Test
+  public void testCorrectResultWithWrongConstraints() {
+    List<HistoryEventImpl> result = historyService.createHistoryQuery().list(1, 1000);
+    assertEquals(2, result.size());
+    assertEquals("created by Peter", result.get(0).getComment());
 
-    @Test
-    public void testCorrectResultWithWrongConstraints() {
-        List<HistoryEventImpl> result = historyService.createHistoryQuery().list(1, 1000);
-        assertEquals(2, result.size());
-        assertEquals("created by Peter", result.get(0).getComment());
+    result = historyService.createHistoryQuery().list(100, 1000);
+    assertTrue(result.isEmpty());
+  }
 
-        result = historyService.createHistoryQuery().list(100, 1000);
-        assertTrue(result.isEmpty());
+  @Test
+  public void testSingle() {
+    HistoryEventImpl single = historyService.createHistoryQuery().userIdIn("peter").single();
+    assertEquals("CREATE", single.getEventType());
 
-    }
+    single = historyService.createHistoryQuery().eventTypeIn("CREATE", "xy").single();
+    assertEquals("admin", single.getUserId());
+  }
 
-    @Test
-    public void testSingle() {
-        HistoryEventImpl single = historyService.createHistoryQuery().userIdIn("peter").single();
-        assertEquals("CREATE", single.getEventType());
+  @Test
+  public void testCount() {
+    long count = historyService.createHistoryQuery().userIdIn("peter").count();
+    assertEquals(1, count);
 
-        single = historyService.createHistoryQuery().eventTypeIn("CREATE", "xy").single();
-        assertEquals("admin", single.getUserId());
-    }
+    count = historyService.createHistoryQuery().count();
+    assertEquals(3, count);
 
-    @Test
-    public void testCount() {
-        long count = historyService.createHistoryQuery().userIdIn("peter").count();
-        assertEquals(1, count);
+    count = historyService.createHistoryQuery().userIdIn("klaus", "arnold", "benni").count();
+    assertEquals(0, count);
+  }
 
-        count = historyService.createHistoryQuery().count();
-        assertEquals(3, count);
+  @Test
+  public void testQueryAttributesIn() {
+    List<HistoryEventImpl> returnValues =
+        historyService.createHistoryQuery().businessProcessIdIn("BPI:01", "BPI:02").list();
+    assertEquals(2, returnValues.size());
 
-        count = historyService.createHistoryQuery().userIdIn("klaus", "arnold", "benni").count();
-        assertEquals(0, count);
-    }
+    returnValues = historyService.createHistoryQuery().parentBusinessProcessIdIn("BPI:01").list();
+    assertEquals(1, returnValues.size());
 
-    @Test
-    public void testQueryAttributesIn() {
-        List<HistoryEventImpl> returnValues = historyService.createHistoryQuery()
-            .businessProcessIdIn("BPI:01", "BPI:02")
+    returnValues =
+        historyService
+            .createHistoryQuery()
+            .taskIdIn("TKI:000000000000000000000000000000000000")
             .list();
-        assertEquals(2, returnValues.size());
+    assertEquals(2, returnValues.size());
 
-        returnValues = historyService.createHistoryQuery().parentBusinessProcessIdIn("BPI:01").list();
-        assertEquals(1, returnValues.size());
+    returnValues = historyService.createHistoryQuery().eventTypeIn("CREATE").list();
+    assertEquals(3, returnValues.size());
 
-        returnValues = historyService.createHistoryQuery().taskIdIn("TKI:000000000000000000000000000000000000").list();
-        assertEquals(2, returnValues.size());
+    TimeInterval timeInterval = new TimeInterval(Instant.now().minusSeconds(10), Instant.now());
+    returnValues = historyService.createHistoryQuery().createdWithin(timeInterval).list();
+    assertEquals(2, returnValues.size());
 
-        returnValues = historyService.createHistoryQuery().eventTypeIn("CREATE").list();
-        assertEquals(3, returnValues.size());
+    returnValues = historyService.createHistoryQuery().userIdIn("admin").list();
+    assertEquals(2, returnValues.size());
 
-        TimeInterval timeInterval = new TimeInterval(Instant.now().minusSeconds(10), Instant.now());
-        returnValues = historyService.createHistoryQuery().createdWithin(timeInterval).list();
-        assertEquals(2, returnValues.size());
+    returnValues = historyService.createHistoryQuery().domainIn("DOMAIN_A").list();
+    assertEquals(2, returnValues.size());
 
-        returnValues = historyService.createHistoryQuery().userIdIn("admin").list();
-        assertEquals(2, returnValues.size());
-
-        returnValues = historyService.createHistoryQuery().domainIn("DOMAIN_A").list();
-        assertEquals(2, returnValues.size());
-
-        returnValues = historyService.createHistoryQuery()
+    returnValues =
+        historyService
+            .createHistoryQuery()
             .workbasketKeyIn("WBI:100000000000000000000000000000000001")
             .list();
-        assertEquals(2, returnValues.size());
+    assertEquals(2, returnValues.size());
 
-        returnValues = historyService.createHistoryQuery().porCompanyIn("00").list();
-        assertEquals(2, returnValues.size());
+    returnValues = historyService.createHistoryQuery().porCompanyIn("00").list();
+    assertEquals(2, returnValues.size());
 
-        returnValues = historyService.createHistoryQuery().porSystemIn("PASystem").list();
-        assertEquals(2, returnValues.size());
+    returnValues = historyService.createHistoryQuery().porSystemIn("PASystem").list();
+    assertEquals(2, returnValues.size());
 
-        returnValues = historyService.createHistoryQuery().porInstanceIn("22").list();
-        assertEquals(1, returnValues.size());
+    returnValues = historyService.createHistoryQuery().porInstanceIn("22").list();
+    assertEquals(1, returnValues.size());
 
-        returnValues = historyService.createHistoryQuery().porTypeIn("VN").list();
-        assertEquals(0, returnValues.size());
+    returnValues = historyService.createHistoryQuery().porTypeIn("VN").list();
+    assertEquals(0, returnValues.size());
 
-        returnValues = historyService.createHistoryQuery().porValueIn("11223344").list();
-        assertEquals(2, returnValues.size());
+    returnValues = historyService.createHistoryQuery().porValueIn("11223344").list();
+    assertEquals(2, returnValues.size());
 
-        returnValues = historyService.createHistoryQuery().taskClassificationKeyIn("L140101").list();
-        assertEquals(2, returnValues.size());
+    returnValues = historyService.createHistoryQuery().taskClassificationKeyIn("L140101").list();
+    assertEquals(2, returnValues.size());
 
-        returnValues = historyService.createHistoryQuery().taskClassificationCategoryIn("TASK").list();
-        assertEquals(2, returnValues.size());
+    returnValues = historyService.createHistoryQuery().taskClassificationCategoryIn("TASK").list();
+    assertEquals(2, returnValues.size());
 
-        returnValues = historyService.createHistoryQuery().attachmentClassificationKeyIn("DOCTYPE_DEFAULT").list();
-        assertEquals(1, returnValues.size());
+    returnValues =
+        historyService.createHistoryQuery().attachmentClassificationKeyIn("DOCTYPE_DEFAULT").list();
+    assertEquals(1, returnValues.size());
 
-        returnValues = historyService.createHistoryQuery().custom1In("custom1").list();
-        assertEquals(3, returnValues.size());
+    returnValues = historyService.createHistoryQuery().custom1In("custom1").list();
+    assertEquals(3, returnValues.size());
 
-        returnValues = historyService.createHistoryQuery().custom2In("custom2").list();
-        assertEquals(1, returnValues.size());
+    returnValues = historyService.createHistoryQuery().custom2In("custom2").list();
+    assertEquals(1, returnValues.size());
 
-        returnValues = historyService.createHistoryQuery().custom3In("custom3").list();
-        assertEquals(2, returnValues.size());
+    returnValues = historyService.createHistoryQuery().custom3In("custom3").list();
+    assertEquals(2, returnValues.size());
 
-        returnValues = historyService.createHistoryQuery().custom4In("custom4").list();
-        assertEquals(1, returnValues.size());
+    returnValues = historyService.createHistoryQuery().custom4In("custom4").list();
+    assertEquals(1, returnValues.size());
 
-        returnValues = historyService.createHistoryQuery().commentIn("created a bug").list();
-        assertEquals(1, returnValues.size());
+    returnValues = historyService.createHistoryQuery().commentIn("created a bug").list();
+    assertEquals(1, returnValues.size());
 
-        returnValues = historyService.createHistoryQuery().oldValueIn("old_val").list();
-        assertEquals(1, returnValues.size());
+    returnValues = historyService.createHistoryQuery().oldValueIn("old_val").list();
+    assertEquals(1, returnValues.size());
 
-        returnValues = historyService.createHistoryQuery().newValueIn("new_val").list();
-        assertEquals(1, returnValues.size());
+    returnValues = historyService.createHistoryQuery().newValueIn("new_val").list();
+    assertEquals(1, returnValues.size());
 
-        returnValues = historyService.createHistoryQuery().oldDataIn("123").list();
-        assertEquals(2, returnValues.size());
+    returnValues = historyService.createHistoryQuery().oldDataIn("123").list();
+    assertEquals(2, returnValues.size());
 
-        returnValues = historyService.createHistoryQuery().newDataIn("456").list();
-        assertEquals(3, returnValues.size());
-        returnValues = historyService.createHistoryQuery().oldValueLike("old%").list();
-        assertEquals(1, returnValues.size());
+    returnValues = historyService.createHistoryQuery().newDataIn("456").list();
+    assertEquals(3, returnValues.size());
+    returnValues = historyService.createHistoryQuery().oldValueLike("old%").list();
+    assertEquals(1, returnValues.size());
 
-        returnValues = historyService.createHistoryQuery().newValueLike("new_%").list();
-        assertEquals(2, returnValues.size());
+    returnValues = historyService.createHistoryQuery().newValueLike("new_%").list();
+    assertEquals(2, returnValues.size());
 
-        returnValues = historyService.createHistoryQuery().oldDataLike("%23%").list();
-        assertEquals(3, returnValues.size());
+    returnValues = historyService.createHistoryQuery().oldDataLike("%23%").list();
+    assertEquals(3, returnValues.size());
 
-        returnValues = historyService.createHistoryQuery().newDataLike("456%").list();
-        assertEquals(3, returnValues.size());
+    returnValues = historyService.createHistoryQuery().newDataLike("456%").list();
+    assertEquals(3, returnValues.size());
+  }
 
-    }
+  @Test
+  public void testSomeLikeMethods() {
+    List<HistoryEventImpl> returnValues =
+        historyService.createHistoryQuery().businessProcessIdLike("BPI:0%").list();
+    assertEquals(3, returnValues.size());
 
-    @Test
-    public void testSomeLikeMethods() {
-        List<HistoryEventImpl> returnValues = historyService.createHistoryQuery()
-            .businessProcessIdLike("BPI:0%")
-            .list();
-        assertEquals(3, returnValues.size());
+    returnValues =
+        historyService.createHistoryQuery().parentBusinessProcessIdLike("BPI:01", " %").list();
+    assertEquals(1, returnValues.size());
 
-        returnValues = historyService.createHistoryQuery().parentBusinessProcessIdLike("BPI:01", " %").list();
-        assertEquals(1, returnValues.size());
+    returnValues = historyService.createHistoryQuery().taskIdLike("TKI:000000000000000%").list();
+    assertEquals(3, returnValues.size());
 
-        returnValues = historyService.createHistoryQuery().taskIdLike("TKI:000000000000000%").list();
-        assertEquals(3, returnValues.size());
+    returnValues = historyService.createHistoryQuery().oldValueLike("old%").list();
+    assertEquals(1, returnValues.size());
 
-        returnValues = historyService.createHistoryQuery().oldValueLike("old%").list();
-        assertEquals(1, returnValues.size());
+    returnValues = historyService.createHistoryQuery().newValueLike("new_%").list();
+    assertEquals(2, returnValues.size());
 
-        returnValues = historyService.createHistoryQuery().newValueLike("new_%").list();
-        assertEquals(2, returnValues.size());
+    returnValues = historyService.createHistoryQuery().oldDataLike("%23%").list();
+    assertEquals(3, returnValues.size());
 
-        returnValues = historyService.createHistoryQuery().oldDataLike("%23%").list();
-        assertEquals(3, returnValues.size());
+    returnValues = historyService.createHistoryQuery().newDataLike("456%").list();
+    assertEquals(3, returnValues.size());
+  }
 
-        returnValues = historyService.createHistoryQuery().newDataLike("456%").list();
-        assertEquals(3, returnValues.size());
+  @Test
+  public void testListValues() {
+    List<String> returnedList =
+        historyService.createHistoryQuery().listValues(HistoryQueryColumnName.ID, null);
+    assertEquals(3, returnedList.size());
 
-    }
+    returnedList =
+        historyService
+            .createHistoryQuery()
+            .listValues(HistoryQueryColumnName.BUSINESS_PROCESS_ID, null);
+    assertEquals(3, returnedList.size());
 
-    @Test
-    public void testListValues() {
-        List<String> returnedList = historyService.createHistoryQuery().listValues(HistoryQueryColumnName.ID, null);
-        assertEquals(3, returnedList.size());
-
-        returnedList = historyService.createHistoryQuery().listValues(HistoryQueryColumnName.BUSINESS_PROCESS_ID, null);
-        assertEquals(3, returnedList.size());
-
-        returnedList = historyService.createHistoryQuery()
+    returnedList =
+        historyService
+            .createHistoryQuery()
             .listValues(HistoryQueryColumnName.PARENT_BUSINESS_PROCESS_ID, null);
-        assertEquals(2, returnedList.size());
+    assertEquals(2, returnedList.size());
 
-        returnedList = historyService.createHistoryQuery().listValues(HistoryQueryColumnName.TASK_ID, null);
-        assertEquals(2, returnedList.size());
+    returnedList =
+        historyService.createHistoryQuery().listValues(HistoryQueryColumnName.TASK_ID, null);
+    assertEquals(2, returnedList.size());
 
-        returnedList = historyService.createHistoryQuery().listValues(HistoryQueryColumnName.EVENT_TYPE, null);
-        assertEquals(1, returnedList.size());
+    returnedList =
+        historyService.createHistoryQuery().listValues(HistoryQueryColumnName.EVENT_TYPE, null);
+    assertEquals(1, returnedList.size());
 
-        returnedList = historyService.createHistoryQuery().listValues(HistoryQueryColumnName.CREATED, null);
-        assertEquals(2, returnedList.size());
+    returnedList =
+        historyService.createHistoryQuery().listValues(HistoryQueryColumnName.CREATED, null);
+    assertEquals(2, returnedList.size());
 
-        returnedList = historyService.createHistoryQuery().listValues(HistoryQueryColumnName.USER_ID, null);
-        assertEquals(2, returnedList.size());
+    returnedList =
+        historyService.createHistoryQuery().listValues(HistoryQueryColumnName.USER_ID, null);
+    assertEquals(2, returnedList.size());
 
-        returnedList = historyService.createHistoryQuery().listValues(HistoryQueryColumnName.DOMAIN, null);
-        assertEquals(2, returnedList.size());
+    returnedList =
+        historyService.createHistoryQuery().listValues(HistoryQueryColumnName.DOMAIN, null);
+    assertEquals(2, returnedList.size());
 
-        returnedList = historyService.createHistoryQuery().listValues(HistoryQueryColumnName.WORKBASKET_KEY, null);
-        assertEquals(2, returnedList.size());
+    returnedList =
+        historyService.createHistoryQuery().listValues(HistoryQueryColumnName.WORKBASKET_KEY, null);
+    assertEquals(2, returnedList.size());
 
-        returnedList = historyService.createHistoryQuery().listValues(HistoryQueryColumnName.POR_COMPANY, null);
-        assertEquals(2, returnedList.size());
+    returnedList =
+        historyService.createHistoryQuery().listValues(HistoryQueryColumnName.POR_COMPANY, null);
+    assertEquals(2, returnedList.size());
 
-        returnedList = historyService.createHistoryQuery().listValues(HistoryQueryColumnName.POR_SYSTEM, null);
-        assertEquals(2, returnedList.size());
+    returnedList =
+        historyService.createHistoryQuery().listValues(HistoryQueryColumnName.POR_SYSTEM, null);
+    assertEquals(2, returnedList.size());
 
-        returnedList = historyService.createHistoryQuery().listValues(HistoryQueryColumnName.POR_INSTANCE, null);
-        assertEquals(2, returnedList.size());
+    returnedList =
+        historyService.createHistoryQuery().listValues(HistoryQueryColumnName.POR_INSTANCE, null);
+    assertEquals(2, returnedList.size());
 
-        returnedList = historyService.createHistoryQuery().listValues(HistoryQueryColumnName.POR_TYPE, null);
-        assertEquals(2, returnedList.size());
+    returnedList =
+        historyService.createHistoryQuery().listValues(HistoryQueryColumnName.POR_TYPE, null);
+    assertEquals(2, returnedList.size());
 
-        returnedList = historyService.createHistoryQuery().listValues(HistoryQueryColumnName.POR_VALUE, null);
-        assertEquals(2, returnedList.size());
+    returnedList =
+        historyService.createHistoryQuery().listValues(HistoryQueryColumnName.POR_VALUE, null);
+    assertEquals(2, returnedList.size());
 
-        returnedList = historyService.createHistoryQuery()
+    returnedList =
+        historyService
+            .createHistoryQuery()
             .listValues(HistoryQueryColumnName.TASK_CLASSIFICATION_KEY, null);
-        assertEquals(2, returnedList.size());
+    assertEquals(2, returnedList.size());
 
-        returnedList = historyService.createHistoryQuery()
+    returnedList =
+        historyService
+            .createHistoryQuery()
             .listValues(HistoryQueryColumnName.TASK_CLASSIFICATION_CATEGORY, null);
-        assertEquals(2, returnedList.size());
+    assertEquals(2, returnedList.size());
 
-        returnedList = historyService.createHistoryQuery()
+    returnedList =
+        historyService
+            .createHistoryQuery()
             .listValues(HistoryQueryColumnName.ATTACHMENT_CLASSIFICATION_KEY, null);
-        assertEquals(2, returnedList.size());
+    assertEquals(2, returnedList.size());
 
-        returnedList = historyService.createHistoryQuery().listValues(HistoryQueryColumnName.COMMENT, null);
-        assertEquals(3, returnedList.size());
+    returnedList =
+        historyService.createHistoryQuery().listValues(HistoryQueryColumnName.COMMENT, null);
+    assertEquals(3, returnedList.size());
 
-        returnedList = historyService.createHistoryQuery().listValues(HistoryQueryColumnName.OLD_VALUE, null);
-        assertEquals(3, returnedList.size());
+    returnedList =
+        historyService.createHistoryQuery().listValues(HistoryQueryColumnName.OLD_VALUE, null);
+    assertEquals(3, returnedList.size());
 
-        returnedList = historyService.createHistoryQuery().listValues(HistoryQueryColumnName.NEW_VALUE, null);
-        assertEquals(3, returnedList.size());
+    returnedList =
+        historyService.createHistoryQuery().listValues(HistoryQueryColumnName.NEW_VALUE, null);
+    assertEquals(3, returnedList.size());
 
-        returnedList = historyService.createHistoryQuery().listValues(HistoryQueryColumnName.CUSTOM_1, null);
-        assertEquals(1, returnedList.size());
+    returnedList =
+        historyService.createHistoryQuery().listValues(HistoryQueryColumnName.CUSTOM_1, null);
+    assertEquals(1, returnedList.size());
 
-        returnedList = historyService.createHistoryQuery().listValues(HistoryQueryColumnName.CUSTOM_2, null);
-        assertEquals(2, returnedList.size());
+    returnedList =
+        historyService.createHistoryQuery().listValues(HistoryQueryColumnName.CUSTOM_2, null);
+    assertEquals(2, returnedList.size());
 
-        returnedList = historyService.createHistoryQuery().listValues(HistoryQueryColumnName.CUSTOM_3, null);
-        assertEquals(2, returnedList.size());
+    returnedList =
+        historyService.createHistoryQuery().listValues(HistoryQueryColumnName.CUSTOM_3, null);
+    assertEquals(2, returnedList.size());
 
-        returnedList = historyService.createHistoryQuery().listValues(HistoryQueryColumnName.CUSTOM_4, null);
-        assertEquals(2, returnedList.size());
+    returnedList =
+        historyService.createHistoryQuery().listValues(HistoryQueryColumnName.CUSTOM_4, null);
+    assertEquals(2, returnedList.size());
 
-        returnedList = historyService.createHistoryQuery().listValues(HistoryQueryColumnName.OLD_DATA, null);
-        assertEquals(2, returnedList.size());
-
-        returnedList = historyService.createHistoryQuery().listValues(HistoryQueryColumnName.NEW_DATA, null);
-        assertEquals(1, returnedList.size());
-    }
+    returnedList =
+        historyService.createHistoryQuery().listValues(HistoryQueryColumnName.OLD_DATA, null);
+    assertEquals(2, returnedList.size());
 
+    returnedList =
+        historyService.createHistoryQuery().listValues(HistoryQueryColumnName.NEW_DATA, null);
+    assertEquals(1, returnedList.size());
+  }
 }

history/taskana-simplehistory-provider/src/test/java/configuration/DBWriter.java

@@ -6,75 +6,69 @@ import java.io.StringReader;
 import java.io.StringWriter;
 import java.sql.Connection;
 import java.sql.SQLException;
-
 import javax.sql.DataSource;
-
 import org.apache.ibatis.jdbc.ScriptRunner;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
-/**
- * Set up the database's writer and generates data for tests.
- */
+/** Set up the database's writer and generates data for tests. */
 public class DBWriter {
 
-    private static final Logger LOGGER = LoggerFactory.getLogger(DBWriter.class);
-    private static final String INSERTVALUES = "/sql/history-events.sql";
-    private StringWriter outWriter = new StringWriter();
-    private PrintWriter logWriter;
-    private StringWriter errorWriter;
-    private PrintWriter errorLogWriter;
+  private static final Logger LOGGER = LoggerFactory.getLogger(DBWriter.class);
+  private static final String INSERTVALUES = "/sql/history-events.sql";
+  private StringWriter outWriter = new StringWriter();
+  private PrintWriter logWriter;
+  private StringWriter errorWriter;
+  private PrintWriter errorLogWriter;
 
-    public DBWriter() {
-        this.logWriter = new PrintWriter(this.outWriter);
-        this.errorWriter = new StringWriter();
-        this.errorLogWriter = new PrintWriter(this.errorWriter);
-    }
+  public DBWriter() {
+    this.logWriter = new PrintWriter(this.outWriter);
+    this.errorWriter = new StringWriter();
+    this.errorLogWriter = new PrintWriter(this.errorWriter);
+  }
 
-    public void generateTestData(DataSource dataSource) throws SQLException {
-        ScriptRunner runner = null;
-        try {
-            runner = configScriptRunner(dataSource);
-            runner.runScript(
-                new InputStreamReader(
-                    this.getClass().getResourceAsStream(INSERTVALUES)));
-        } finally {
-            if (runner != null) {
-                runner.closeConnection();
-            }
-            LOGGER.debug(outWriter.toString());
-            if (!errorWriter.toString().trim().isEmpty()) {
-                LOGGER.error(errorWriter.toString());
-            }
-        }
+  public void generateTestData(DataSource dataSource) throws SQLException {
+    ScriptRunner runner = null;
+    try {
+      runner = configScriptRunner(dataSource);
+      runner.runScript(new InputStreamReader(this.getClass().getResourceAsStream(INSERTVALUES)));
+    } finally {
+      if (runner != null) {
+        runner.closeConnection();
+      }
+      LOGGER.debug(outWriter.toString());
+      if (!errorWriter.toString().trim().isEmpty()) {
+        LOGGER.error(errorWriter.toString());
+      }
     }
+  }
 
-    public void clearDB(DataSource dataSource) throws SQLException {
-        ScriptRunner runner = null;
-        try {
-            runner = configScriptRunner(dataSource);
-            runner.runScript(new StringReader("DELETE FROM HISTORY_EVENTS;"));
-        } finally {
-            if (runner != null) {
-                runner.closeConnection();
-            }
-            LOGGER.debug(outWriter.toString());
-            if (!errorWriter.toString().trim().isEmpty()) {
-                LOGGER.error(errorWriter.toString());
-            }
-        }
+  public void clearDB(DataSource dataSource) throws SQLException {
+    ScriptRunner runner = null;
+    try {
+      runner = configScriptRunner(dataSource);
+      runner.runScript(new StringReader("DELETE FROM HISTORY_EVENTS;"));
+    } finally {
+      if (runner != null) {
+        runner.closeConnection();
+      }
+      LOGGER.debug(outWriter.toString());
+      if (!errorWriter.toString().trim().isEmpty()) {
+        LOGGER.error(errorWriter.toString());
+      }
     }
+  }
 
-    private ScriptRunner configScriptRunner(DataSource dataSource) throws SQLException {
-        Connection connection = dataSource.getConnection();
-        LOGGER.debug(connection.getMetaData().toString());
-        ScriptRunner runner = new ScriptRunner(connection);
-        runner.setStopOnError(true);
-        runner.setLogWriter(this.logWriter);
-        runner.setErrorLogWriter(this.errorLogWriter);
-        runner.setStopOnError(true);
-        runner.setLogWriter(this.logWriter);
-        runner.setErrorLogWriter(this.errorLogWriter);
-        return runner;
-    }
+  private ScriptRunner configScriptRunner(DataSource dataSource) throws SQLException {
+    Connection connection = dataSource.getConnection();
+    LOGGER.debug(connection.getMetaData().toString());
+    ScriptRunner runner = new ScriptRunner(connection);
+    runner.setStopOnError(true);
+    runner.setLogWriter(this.logWriter);
+    runner.setErrorLogWriter(this.errorLogWriter);
+    runner.setStopOnError(true);
+    runner.setLogWriter(this.logWriter);
+    runner.setErrorLogWriter(this.errorLogWriter);
+    return runner;
+  }
 }

history/taskana-simplehistory-provider/src/test/java/configuration/TaskanaEngineConfigurationTest.java

@@ -2,14 +2,12 @@ package configuration;
 
 import static org.junit.Assert.assertEquals;
 
+import acceptance.AbstractAccTest;
 import java.sql.SQLException;
-
 import javax.sql.DataSource;
-
 import org.junit.Assert;
 import org.junit.Test;
 
-import acceptance.AbstractAccTest;
 import pro.taskana.TaskanaEngine;
 import pro.taskana.configuration.TaskanaEngineConfiguration;
 
@@ -20,27 +18,25 @@ import pro.taskana.configuration.TaskanaEngineConfiguration;
  */
 public class TaskanaEngineConfigurationTest extends AbstractAccTest {
 
-    @Test
-    public void testCreateTaskanaEngine() throws SQLException {
-        DataSource ds = getDataSource();
-        TaskanaEngineConfiguration taskEngineConfiguration = new TaskanaEngineConfiguration(ds, false,
-            getSchemaName());
+  @Test
+  public void testCreateTaskanaEngine() throws SQLException {
+    DataSource ds = getDataSource();
+    TaskanaEngineConfiguration taskEngineConfiguration =
+        new TaskanaEngineConfiguration(ds, false, getSchemaName());
 
-        TaskanaEngine te = taskEngineConfiguration.buildTaskanaEngine();
+    TaskanaEngine te = taskEngineConfiguration.buildTaskanaEngine();
 
-        Assert.assertNotNull(te);
-    }
-
-    @Test
-    public void testCreateTaskanaHistoryEventWithNonDefaultSchemaName() throws SQLException {
-        resetDb("SOMECUSTOMSCHEMANAME");
-        long count = historyService.createHistoryQuery().workbasketKeyIn("wbKey1").count();
-        assertEquals(0, count);
-        historyService.create(
-            AbstractAccTest.createHistoryEvent("wbKey1", "taskId1", "type1", "Some comment", "wbKey2"));
-        count = historyService.createHistoryQuery().workbasketKeyIn("wbKey1").count();
-        assertEquals(1, count);
-
-    }
+    Assert.assertNotNull(te);
+  }
 
+  @Test
+  public void testCreateTaskanaHistoryEventWithNonDefaultSchemaName() throws SQLException {
+    resetDb("SOMECUSTOMSCHEMANAME");
+    long count = historyService.createHistoryQuery().workbasketKeyIn("wbKey1").count();
+    assertEquals(0, count);
+    historyService.create(
+        AbstractAccTest.createHistoryEvent("wbKey1", "taskId1", "type1", "Some comment", "wbKey2"));
+    count = historyService.createHistoryQuery().workbasketKeyIn("wbKey1").count();
+    assertEquals(1, count);
+  }
 }

history/taskana-simplehistory-provider/src/test/java/pro/taskana/simplehistory/impl/HistoryQueryImplTest.java

@@ -9,7 +9,6 @@ import java.sql.SQLException;
 import java.time.Instant;
 import java.util.ArrayList;
 import java.util.List;
-
 import org.junit.Before;
 import org.junit.Test;
 import org.junit.runner.RunWith;
@@ -27,50 +26,55 @@ import pro.taskana.simplehistory.impl.mappings.HistoryQueryMapper;
 @RunWith(MockitoJUnitRunner.class)
 public class HistoryQueryImplTest {
 
-    private HistoryQueryImpl historyQueryImpl;
+  private HistoryQueryImpl historyQueryImpl;
 
-    @Mock
-    private TaskanaHistoryEngineImpl taskanaHistoryEngineMock;
+  @Mock private TaskanaHistoryEngineImpl taskanaHistoryEngineMock;
 
-    @Mock
-    private HistoryQueryMapper historyQueryMock;
+  @Mock private HistoryQueryMapper historyQueryMock;
 
-    @Before
-    public void setup() {
-        historyQueryImpl = new HistoryQueryImpl(taskanaHistoryEngineMock, historyQueryMock);
-    }
+  @Before
+  public void setup() {
+    historyQueryImpl = new HistoryQueryImpl(taskanaHistoryEngineMock, historyQueryMock);
+  }
 
-    @Test
-    public void testShouldReturnList() throws SQLException {
-        List<HistoryEventImpl> returnList = new ArrayList<>();
-        returnList.add(createHistoryEvent("abcd", "T22", "car", "BV", "this was important", null));
-        TimeInterval interval = new TimeInterval(Instant.now().minusNanos(1000), Instant.now());
+  @Test
+  public void testShouldReturnList() throws SQLException {
+    List<HistoryEventImpl> returnList = new ArrayList<>();
+    returnList.add(createHistoryEvent("abcd", "T22", "car", "BV", "this was important", null));
+    TimeInterval interval = new TimeInterval(Instant.now().minusNanos(1000), Instant.now());
 
-        doNothing().when(taskanaHistoryEngineMock).openConnection();
-        doNothing().when(taskanaHistoryEngineMock).returnConnection();
-        doReturn(returnList).when(historyQueryMock).queryHistoryEvent(historyQueryImpl);
+    doNothing().when(taskanaHistoryEngineMock).openConnection();
+    doNothing().when(taskanaHistoryEngineMock).returnConnection();
+    doReturn(returnList).when(historyQueryMock).queryHistoryEvent(historyQueryImpl);
 
-        List<HistoryEventImpl> result = historyQueryImpl
+    List<HistoryEventImpl> result =
+        historyQueryImpl
             .taskIdIn("TKI:01")
-            .workbasketKeyIn("T22", "some_long_long, long loooooooooooooooooooooooooooooooooooong String.")
+            .workbasketKeyIn(
+                "T22", "some_long_long, long loooooooooooooooooooooooooooooooooooong String.")
             .userIdIn("BV")
             .commentLike("%as important")
             .createdWithin(interval)
             .list();
 
-        validateMockitoUsage();
-        assertArrayEquals(returnList.toArray(), result.toArray());
-    }
+    validateMockitoUsage();
+    assertArrayEquals(returnList.toArray(), result.toArray());
+  }
 
-    private HistoryEventImpl createHistoryEvent(String taskId, String workbasketKey, String type, String userId,
-        String comment, Instant created) {
-        HistoryEventImpl he = new HistoryEventImpl();
-        he.setTaskId(taskId);
-        he.setWorkbasketKey(workbasketKey);
-        he.setEventType(type);
-        he.setUserId(userId);
-        he.setComment(comment);
-        he.setCreated(created);
-        return he;
-    }
+  private HistoryEventImpl createHistoryEvent(
+      String taskId,
+      String workbasketKey,
+      String type,
+      String userId,
+      String comment,
+      Instant created) {
+    HistoryEventImpl he = new HistoryEventImpl();
+    he.setTaskId(taskId);
+    he.setWorkbasketKey(workbasketKey);
+    he.setEventType(type);
+    he.setUserId(userId);
+    he.setComment(comment);
+    he.setCreated(created);
+    return he;
+  }
 }

history/taskana-simplehistory-provider/src/test/java/pro/taskana/simplehistory/impl/SimpleHistoryServiceImplTest.java

@@ -8,10 +8,10 @@ import static org.mockito.Mockito.doReturn;
 import static org.mockito.Mockito.times;
 import static org.mockito.Mockito.verify;
 
+import acceptance.AbstractAccTest;
 import java.sql.SQLException;
 import java.util.ArrayList;
 import java.util.List;
-
 import org.apache.ibatis.session.SqlSessionManager;
 import org.junit.Before;
 import org.junit.Test;
@@ -25,7 +25,6 @@ import org.powermock.core.classloader.annotations.PowerMockIgnore;
 import org.powermock.core.classloader.annotations.PrepareForTest;
 import org.powermock.modules.junit4.PowerMockRunner;
 
-import acceptance.AbstractAccTest;
 import pro.taskana.configuration.TaskanaEngineConfiguration;
 import pro.taskana.simplehistory.impl.mappings.HistoryEventMapper;
 import pro.taskana.simplehistory.impl.mappings.HistoryQueryMapper;
@@ -40,83 +39,86 @@ import pro.taskana.simplehistory.impl.mappings.HistoryQueryMapper;
 @PowerMockIgnore("javax.management.*")
 public class SimpleHistoryServiceImplTest {
 
-    @InjectMocks
-    private SimpleHistoryServiceImpl cutSpy;
+  @InjectMocks private SimpleHistoryServiceImpl cutSpy;
 
-    @Mock
-    private HistoryEventMapper historyEventMapperMock;
+  @Mock private HistoryEventMapper historyEventMapperMock;
 
-    @Mock
-    private HistoryQueryMapper historyQueryMapperMock;
+  @Mock private HistoryQueryMapper historyQueryMapperMock;
 
-    @Mock
-    private TaskanaHistoryEngineImpl taskanaHistoryEngineMock;
+  @Mock private TaskanaHistoryEngineImpl taskanaHistoryEngineMock;
 
-    @Mock
-    private TaskanaEngineConfiguration taskanaEngineConfiguration;
+  @Mock private TaskanaEngineConfiguration taskanaEngineConfiguration;
 
-    @Mock
-    private SqlSessionManager sqlSessionManagerMock;
+  @Mock private SqlSessionManager sqlSessionManagerMock;
 
-    @Before
-    public void setup() {
-        MockitoAnnotations.initMocks(this);
-    }
+  @Before
+  public void setup() {
+    MockitoAnnotations.initMocks(this);
+  }
 
-        @Test
-        public void testInitializeSimpleHistoryService() throws SQLException {
-            doReturn(historyEventMapperMock).when(sqlSessionManagerMock).getMapper(HistoryEventMapper.class);
-            doReturn(historyQueryMapperMock).when(sqlSessionManagerMock).getMapper(HistoryQueryMapper.class);
-            doReturn(sqlSessionManagerMock).when(taskanaHistoryEngineMock).getSqlSession();
-            PowerMockito.mockStatic(TaskanaHistoryEngineImpl.class);
-            Mockito.when(TaskanaHistoryEngineImpl.createTaskanaEngine(taskanaEngineConfiguration))
-                .thenReturn(taskanaHistoryEngineMock);
-            cutSpy.initialize(taskanaEngineConfiguration);
+  @Test
+  public void testInitializeSimpleHistoryService() throws SQLException {
+    doReturn(historyEventMapperMock)
+        .when(sqlSessionManagerMock)
+        .getMapper(HistoryEventMapper.class);
+    doReturn(historyQueryMapperMock)
+        .when(sqlSessionManagerMock)
+        .getMapper(HistoryQueryMapper.class);
+    doReturn(sqlSessionManagerMock).when(taskanaHistoryEngineMock).getSqlSession();
+    PowerMockito.mockStatic(TaskanaHistoryEngineImpl.class);
+    Mockito.when(TaskanaHistoryEngineImpl.createTaskanaEngine(taskanaEngineConfiguration))
+        .thenReturn(taskanaHistoryEngineMock);
+    cutSpy.initialize(taskanaEngineConfiguration);
 
-            verify(sqlSessionManagerMock, times(2)).getMapper(any());
-            verify(taskanaHistoryEngineMock, times(2)).getSqlSession();
-        }
+    verify(sqlSessionManagerMock, times(2)).getMapper(any());
+    verify(taskanaHistoryEngineMock, times(2)).getSqlSession();
+  }
 
-        @Test
-        public void testInitializeSimpleHistoryServiceWithNonDefaultSchemaName() throws SQLException {
+  @Test
+  public void testInitializeSimpleHistoryServiceWithNonDefaultSchemaName() throws SQLException {
 
-            doReturn(historyEventMapperMock).when(sqlSessionManagerMock).getMapper(HistoryEventMapper.class);
-            doReturn(historyQueryMapperMock).when(sqlSessionManagerMock).getMapper(HistoryQueryMapper.class);
-            doReturn(sqlSessionManagerMock).when(taskanaHistoryEngineMock).getSqlSession();
-            PowerMockito.mockStatic(TaskanaHistoryEngineImpl.class);
-            Mockito.when(TaskanaHistoryEngineImpl.createTaskanaEngine(taskanaEngineConfiguration))
-                .thenReturn(taskanaHistoryEngineMock);
-            cutSpy.initialize(taskanaEngineConfiguration);
+    doReturn(historyEventMapperMock)
+        .when(sqlSessionManagerMock)
+        .getMapper(HistoryEventMapper.class);
+    doReturn(historyQueryMapperMock)
+        .when(sqlSessionManagerMock)
+        .getMapper(HistoryQueryMapper.class);
+    doReturn(sqlSessionManagerMock).when(taskanaHistoryEngineMock).getSqlSession();
+    PowerMockito.mockStatic(TaskanaHistoryEngineImpl.class);
+    Mockito.when(TaskanaHistoryEngineImpl.createTaskanaEngine(taskanaEngineConfiguration))
+        .thenReturn(taskanaHistoryEngineMock);
+    cutSpy.initialize(taskanaEngineConfiguration);
 
-            verify(sqlSessionManagerMock, times(2)).getMapper(any());
-            verify(taskanaHistoryEngineMock, times(2)).getSqlSession();
-        }
+    verify(sqlSessionManagerMock, times(2)).getMapper(any());
+    verify(taskanaHistoryEngineMock, times(2)).getSqlSession();
+  }
 
-        @Test
-        public void testCreateEvent() throws SQLException {
-            HistoryEventImpl expectedWb = AbstractAccTest.createHistoryEvent("wbKey1", "taskId1", "type1", "Some comment",
-                "wbKey2");
-            doNothing().when(historyEventMapperMock).insert(expectedWb);
+  @Test
+  public void testCreateEvent() throws SQLException {
+    HistoryEventImpl expectedWb =
+        AbstractAccTest.createHistoryEvent("wbKey1", "taskId1", "type1", "Some comment", "wbKey2");
+    doNothing().when(historyEventMapperMock).insert(expectedWb);
 
-            cutSpy.create(expectedWb);
-            verify(taskanaHistoryEngineMock, times(1)).openConnection();
-            verify(historyEventMapperMock, times(1)).insert(expectedWb);
-            verify(taskanaHistoryEngineMock, times(1)).returnConnection();
-            assertNotNull(expectedWb.getCreated());
-        }
+    cutSpy.create(expectedWb);
+    verify(taskanaHistoryEngineMock, times(1)).openConnection();
+    verify(historyEventMapperMock, times(1)).insert(expectedWb);
+    verify(taskanaHistoryEngineMock, times(1)).returnConnection();
+    assertNotNull(expectedWb.getCreated());
+  }
 
-        @Test
-        public void testQueryEvent() throws SQLException {
-            List<HistoryEventImpl> returnList = new ArrayList<>();
-            returnList.add(AbstractAccTest.createHistoryEvent("wbKey1", "taskId1", "type1", "Some comment", "wbKey2"));
-            doReturn(returnList).when(historyQueryMapperMock).queryHistoryEvent(any());
+  @Test
+  public void testQueryEvent() throws SQLException {
+    List<HistoryEventImpl> returnList = new ArrayList<>();
+    returnList.add(
+        AbstractAccTest.createHistoryEvent("wbKey1", "taskId1", "type1", "Some comment", "wbKey2"));
+    doReturn(returnList).when(historyQueryMapperMock).queryHistoryEvent(any());
 
-            List<HistoryEventImpl> result = cutSpy.createHistoryQuery().taskIdIn("taskId1").list();
+    List<HistoryEventImpl> result = cutSpy.createHistoryQuery().taskIdIn("taskId1").list();
 
-            verify(taskanaHistoryEngineMock, times(1)).openConnection();
-            verify(historyQueryMapperMock, times(1)).queryHistoryEvent(any());
-            verify(taskanaHistoryEngineMock, times(1)).returnConnection();
-            assertEquals(returnList.size(), result.size());
-            assertEquals(returnList.get(0).getWorkbasketKey(), result.get(0).getWorkbasketKey());
-        }
+    verify(taskanaHistoryEngineMock, times(1)).openConnection();
+    verify(historyQueryMapperMock, times(1)).queryHistoryEvent(any());
+    verify(taskanaHistoryEngineMock, times(1)).returnConnection();
+    assertEquals(returnList.size(), result.size());
+    assertEquals(returnList.get(0).getWorkbasketKey(), result.get(0).getWorkbasketKey());
+  }
 }

history/taskana-simplehistory-rest-spring-example/src/main/java/rest/pro/taskana/rest/simplehistory/ExampleRestApplication.java

@@ -1,9 +1,7 @@
 package rest.pro.taskana.rest.simplehistory;
 
 import java.sql.SQLException;
-
 import javax.sql.DataSource;
-
 import org.springframework.beans.factory.annotation.Value;
 import org.springframework.boot.SpringApplication;
 import org.springframework.boot.autoconfigure.SpringBootApplication;
@@ -20,47 +18,47 @@ import org.springframework.transaction.PlatformTransactionManager;
 import pro.taskana.rest.simplehistory.TaskHistoryRestConfiguration;
 import pro.taskana.rest.simplehistory.sampledata.SampleDataGenerator;
 
-/**
- * Example Application showing the implementation of taskana-rest-spring.
- */
+/** Example Application showing the implementation of taskana-rest-spring. */
 @SpringBootApplication
 @ComponentScan(basePackages = "pro.taskana.rest.simplehistory")
 @Import({TaskHistoryRestConfiguration.class, WebMvcConfig.class})
 public class ExampleRestApplication {
 
-    @Value("${taskana.schemaName:TASKANA}")
-    public String schemaName;
+  @Value("${taskana.schemaName:TASKANA}")
+  public String schemaName;
 
-    private SampleDataGenerator sampleDataGenerator;
+  private SampleDataGenerator sampleDataGenerator;
 
-    public static void main(String[] args) {
-        SpringApplication.run(ExampleRestApplication.class, args);
-    }
+  public static void main(String[] args) {
+    SpringApplication.run(ExampleRestApplication.class, args);
+  }
 
-    @Bean
-    @Primary
-    @ConfigurationProperties(prefix = "datasource")
-    public DataSourceProperties dataSourceProperties() {
-        DataSourceProperties props = new DataSourceProperties();
-        props.setUrl("jdbc:h2:mem:taskana;IGNORECASE=TRUE;LOCK_MODE=0;INIT=CREATE SCHEMA IF NOT EXISTS " + schemaName);
-        return props;
-    }
+  @Bean
+  @Primary
+  @ConfigurationProperties(prefix = "datasource")
+  public DataSourceProperties dataSourceProperties() {
+    DataSourceProperties props = new DataSourceProperties();
+    props.setUrl(
+        "jdbc:h2:mem:taskana;IGNORECASE=TRUE;LOCK_MODE=0;INIT=CREATE SCHEMA IF NOT EXISTS "
+            + schemaName);
+    return props;
+  }
 
-    @Bean
-    public DataSource dataSource(DataSourceProperties properties) {
-        return properties.initializeDataSourceBuilder().build();
-    }
+  @Bean
+  public DataSource dataSource(DataSourceProperties properties) {
+    return properties.initializeDataSourceBuilder().build();
+  }
 
-    @Bean
-    public PlatformTransactionManager txManager(DataSource dataSource) {
-        return new DataSourceTransactionManager(dataSource);
-    }
+  @Bean
+  public PlatformTransactionManager txManager(DataSource dataSource) {
+    return new DataSourceTransactionManager(dataSource);
+  }
 
-    @Bean
-    @DependsOn("getTaskanaEngine") // generate sample data after schema was inserted
-    public SampleDataGenerator generateSampleData(DataSource dataSource) throws SQLException {
-        sampleDataGenerator = new SampleDataGenerator(dataSource);
-        sampleDataGenerator.generateSampleData(schemaName);
-        return sampleDataGenerator;
-    }
+  @Bean
+  @DependsOn("getTaskanaEngine") // generate sample data after schema was inserted
+  public SampleDataGenerator generateSampleData(DataSource dataSource) throws SQLException {
+    sampleDataGenerator = new SampleDataGenerator(dataSource);
+    sampleDataGenerator.generateSampleData(schemaName);
+    return sampleDataGenerator;
+  }
 }

history/taskana-simplehistory-rest-spring-example/src/main/java/rest/pro/taskana/rest/simplehistory/WebMvcConfig.java

@@ -1,9 +1,9 @@
 package rest.pro.taskana.rest.simplehistory;
 
+import com.fasterxml.jackson.databind.ObjectMapper;
+import com.fasterxml.jackson.databind.SerializationFeature;
 import java.util.List;
-
 import javax.annotation.PostConstruct;
-
 import org.springframework.context.annotation.Configuration;
 import org.springframework.http.converter.HttpMessageConverter;
 import org.springframework.http.converter.json.MappingJackson2HttpMessageConverter;
@@ -11,50 +11,47 @@ import org.springframework.web.servlet.config.annotation.EnableWebMvc;
 import org.springframework.web.servlet.config.annotation.ResourceHandlerRegistry;
 import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;
 
-import com.fasterxml.jackson.databind.ObjectMapper;
-import com.fasterxml.jackson.databind.SerializationFeature;
-
-/**
- * The Web MVC Configuration.
- */
+/** The Web MVC Configuration. */
 @Configuration
 @EnableWebMvc
 public class WebMvcConfig implements WebMvcConfigurer {
 
-    private static final String[] CLASSPATH_RESOURCE_LOCATIONS = {
-        "classpath:/META-INF/resources/", "classpath:/resources/",
-        "classpath:/static/", "classpath:/public/"};
+  private static final String[] CLASSPATH_RESOURCE_LOCATIONS = {
+    "classpath:/META-INF/resources/", "classpath:/resources/",
+    "classpath:/static/", "classpath:/public/"
+  };
 
-    private ObjectMapper objectMapper;
+  private ObjectMapper objectMapper;
 
-    WebMvcConfig(ObjectMapper objectMapper) {
-        this.objectMapper = objectMapper;
+  WebMvcConfig(ObjectMapper objectMapper) {
+    this.objectMapper = objectMapper;
+  }
+
+  @Override
+  public void addResourceHandlers(ResourceHandlerRegistry registry) {
+    if (!registry.hasMappingForPattern("/webjars/**")) {
+      registry
+          .addResourceHandler("/webjars/**")
+          .addResourceLocations("classpath:/META-INF/resources/webjars/");
     }
-
-    @Override
-    public void addResourceHandlers(ResourceHandlerRegistry registry) {
-        if (!registry.hasMappingForPattern("/webjars/**")) {
-            registry.addResourceHandler("/webjars/**").addResourceLocations(
-                "classpath:/META-INF/resources/webjars/");
-        }
-        if (!registry.hasMappingForPattern("/**")) {
-            registry.addResourceHandler("/**").addResourceLocations(
-                CLASSPATH_RESOURCE_LOCATIONS);
-        }
+    if (!registry.hasMappingForPattern("/**")) {
+      registry.addResourceHandler("/**").addResourceLocations(CLASSPATH_RESOURCE_LOCATIONS);
     }
+  }
 
-    @Override
-    public void extendMessageConverters(List<HttpMessageConverter<?>> converters) {
-        for (HttpMessageConverter<?> converter : converters) {
-            if (converter instanceof MappingJackson2HttpMessageConverter) {
-                MappingJackson2HttpMessageConverter jacksonConverter = (MappingJackson2HttpMessageConverter) converter;
-                jacksonConverter.setPrettyPrint(true);
-            }
-        }
+  @Override
+  public void extendMessageConverters(List<HttpMessageConverter<?>> converters) {
+    for (HttpMessageConverter<?> converter : converters) {
+      if (converter instanceof MappingJackson2HttpMessageConverter) {
+        MappingJackson2HttpMessageConverter jacksonConverter =
+            (MappingJackson2HttpMessageConverter) converter;
+        jacksonConverter.setPrettyPrint(true);
+      }
     }
+  }
 
-    @PostConstruct
-    public void enableObjectIndent() {
-        objectMapper.enable(SerializationFeature.INDENT_OUTPUT);
-    }
+  @PostConstruct
+  public void enableObjectIndent() {
+    objectMapper.enable(SerializationFeature.INDENT_OUTPUT);
+  }
 }

history/taskana-simplehistory-rest-spring/src/main/java/pro/taskana/rest/resource/TaskHistoryEventAssembler.java

@@ -6,24 +6,23 @@ import org.springframework.hateoas.mvc.ResourceAssemblerSupport;
 import pro.taskana.history.api.TaskanaHistoryEvent;
 import pro.taskana.simplehistory.impl.HistoryEventImpl;
 
-/**
- * Transforms any {@link HistoryEventImpl} into its {@link TaskHistoryEventResource}.
- */
-public class TaskHistoryEventAssembler extends ResourceAssemblerSupport<TaskanaHistoryEvent, TaskHistoryEventResource> {
+/** Transforms any {@link HistoryEventImpl} into its {@link TaskHistoryEventResource}. */
+public class TaskHistoryEventAssembler
+    extends ResourceAssemblerSupport<TaskanaHistoryEvent, TaskHistoryEventResource> {
 
-    public TaskHistoryEventAssembler() {
-        super(HistoryEventImpl.class, TaskHistoryEventResource.class);
-    }
+  public TaskHistoryEventAssembler() {
+    super(HistoryEventImpl.class, TaskHistoryEventResource.class);
+  }
 
-    @Override
-    public TaskHistoryEventResource toResource(TaskanaHistoryEvent historyEvent) {
-        TaskHistoryEventResource resource = createResourceWithId(historyEvent.getId(), historyEvent);
-        BeanUtils.copyProperties(historyEvent, resource);
-        if (historyEvent.getCreated() != null) {
-            resource.setCreated(historyEvent.getCreated().toString());
-        }
-        resource.setTaskHistoryId(String.valueOf(historyEvent.getId()));
-        resource.removeLinks();
-        return resource;
+  @Override
+  public TaskHistoryEventResource toResource(TaskanaHistoryEvent historyEvent) {
+    TaskHistoryEventResource resource = createResourceWithId(historyEvent.getId(), historyEvent);
+    BeanUtils.copyProperties(historyEvent, resource);
+    if (historyEvent.getCreated() != null) {
+      resource.setCreated(historyEvent.getCreated().toString());
     }
+    resource.setTaskHistoryId(String.valueOf(historyEvent.getId()));
+    resource.removeLinks();
+    return resource;
+  }
 }

history/taskana-simplehistory-rest-spring/src/main/java/pro/taskana/rest/resource/TaskHistoryEventListAssembler.java

@@ -3,48 +3,45 @@ package pro.taskana.rest.resource;
 import static org.springframework.hateoas.mvc.ControllerLinkBuilder.linkTo;
 
 import java.util.List;
-
 import org.springframework.hateoas.Link;
 
 import pro.taskana.rest.resource.PagedResources.PageMetadata;
 import pro.taskana.rest.simplehistory.TaskHistoryEventController;
 import pro.taskana.simplehistory.impl.HistoryEventImpl;
 
-/**
- * Mapper to convert from a list of HistoryEventImpl to a TaskHistoryEventResource.
- */
+/** Mapper to convert from a list of HistoryEventImpl to a TaskHistoryEventResource. */
 public class TaskHistoryEventListAssembler extends AbstractRessourcesAssembler {
 
-    public TaskHistoryEventListAssembler() {
+  public TaskHistoryEventListAssembler() {}
+
+  public TaskHistoryEventListResource toResources(
+      List<HistoryEventImpl> historyEvents, PageMetadata pageMetadata) {
+
+    TaskHistoryEventAssembler assembler = new TaskHistoryEventAssembler();
+    List<TaskHistoryEventResource> resources = assembler.toResources(historyEvents);
+    TaskHistoryEventListResource pagedResources =
+        new TaskHistoryEventListResource(resources, pageMetadata);
+
+    pagedResources.add(new Link(original.toUriString()).withSelfRel());
+    if (pageMetadata != null) {
+      pagedResources.add(linkTo(TaskHistoryEventController.class).withRel("allTaskHistoryEvent"));
+      pagedResources.add(
+          new Link(original.replaceQueryParam("page", 1).toUriString()).withRel(Link.REL_FIRST));
+      pagedResources.add(
+          new Link(original.replaceQueryParam("page", pageMetadata.getTotalPages()).toUriString())
+              .withRel(Link.REL_LAST));
+      if (pageMetadata.getNumber() > 1) {
+        pagedResources.add(
+            new Link(original.replaceQueryParam("page", pageMetadata.getNumber() - 1).toUriString())
+                .withRel(Link.REL_PREVIOUS));
+      }
+      if (pageMetadata.getNumber() < pageMetadata.getTotalPages()) {
+        pagedResources.add(
+            new Link(original.replaceQueryParam("page", pageMetadata.getNumber() + 1).toUriString())
+                .withRel(Link.REL_NEXT));
+      }
     }
 
-    public TaskHistoryEventListResource toResources(List<HistoryEventImpl> historyEvents,
-        PageMetadata pageMetadata) {
-
-        TaskHistoryEventAssembler assembler = new TaskHistoryEventAssembler();
-        List<TaskHistoryEventResource> resources = assembler.toResources(historyEvents);
-        TaskHistoryEventListResource pagedResources = new TaskHistoryEventListResource(
-            resources,
-            pageMetadata);
-
-        pagedResources.add(new Link(original.toUriString()).withSelfRel());
-        if (pageMetadata != null) {
-            pagedResources.add(linkTo(TaskHistoryEventController.class).withRel("allTaskHistoryEvent"));
-            pagedResources.add(new Link(original.replaceQueryParam("page", 1).toUriString()).withRel(Link.REL_FIRST));
-            pagedResources.add(new Link(original.replaceQueryParam("page", pageMetadata.getTotalPages()).toUriString())
-                .withRel(Link.REL_LAST));
-            if (pageMetadata.getNumber() > 1) {
-                pagedResources
-                    .add(new Link(original.replaceQueryParam("page", pageMetadata.getNumber() - 1).toUriString())
-                        .withRel(Link.REL_PREVIOUS));
-            }
-            if (pageMetadata.getNumber() < pageMetadata.getTotalPages()) {
-                pagedResources
-                    .add(new Link(original.replaceQueryParam("page", pageMetadata.getNumber() + 1).toUriString())
-                        .withRel(Link.REL_NEXT));
-            }
-        }
-
-        return pagedResources;
-    }
+    return pagedResources;
+  }
 }

history/taskana-simplehistory-rest-spring/src/main/java/pro/taskana/rest/resource/TaskHistoryEventListResource.java

@@ -1,34 +1,29 @@
 package pro.taskana.rest.resource;
 
-import java.util.Collection;
-
-import org.springframework.hateoas.Link;
-import org.springframework.hateoas.PagedResources.PageMetadata;
-
 import com.fasterxml.jackson.annotation.JsonProperty;
+import java.util.Collection;
+import org.springframework.hateoas.Link;
 
-/**
- * Resource class for {@link TaskHistoryEventResource} with Pagination.
- */
+/** Resource class for {@link TaskHistoryEventResource} with Pagination. */
 public class TaskHistoryEventListResource extends PagedResources<TaskHistoryEventResource> {
 
-    public TaskHistoryEventListResource() {
-        super();
-    }
+  public TaskHistoryEventListResource() {
+    super();
+  }
 
-    public TaskHistoryEventListResource(Collection<TaskHistoryEventResource> content, PageMetadata metadata,
-        Link... links) {
-        super(content, metadata, links);
-    }
+  public TaskHistoryEventListResource(
+      Collection<TaskHistoryEventResource> content, PageMetadata metadata, Link... links) {
+    super(content, metadata, links);
+  }
 
-    public TaskHistoryEventListResource(Collection<TaskHistoryEventResource> content, PageMetadata metadata,
-        Iterable<Link> links) {
-        super(content, metadata, links);
-    }
+  public TaskHistoryEventListResource(
+      Collection<TaskHistoryEventResource> content, PageMetadata metadata, Iterable<Link> links) {
+    super(content, metadata, links);
+  }
 
-    @Override
-    @JsonProperty("taskHistoryEvents")
-    public Collection<TaskHistoryEventResource> getContent() {
-        return super.getContent();
-    }
+  @Override
+  @JsonProperty("taskHistoryEvents")
+  public Collection<TaskHistoryEventResource> getContent() {
+    return super.getContent();
+  }
 }

history/taskana-simplehistory-rest-spring/src/main/java/pro/taskana/rest/resource/TaskHistoryEventResource.java

@@ -1,266 +1,275 @@
 package pro.taskana.rest.resource;
 
 import javax.validation.constraints.NotNull;
-
 import org.springframework.hateoas.ResourceSupport;
 
-/**
- * Resource class for {@link pro.taskana.history.api.TaskanaHistoryEvent}.
- */
+/** Resource class for {@link pro.taskana.history.api.TaskanaHistoryEvent}. */
 public class TaskHistoryEventResource extends ResourceSupport {
-    @NotNull
-    private String taskHistoryEventId;
+  @NotNull private String taskHistoryEventId;
 
-    private String businessProcessId;
-    private String parentBusinessProcessId;
-    private String taskId;
-    private String eventType;
-    private String created;
-    private String userId;
-    private String domain;
-    private String workbasketKey;
-    private String porCompany;
-    private String porType;
-    private String porSystem;
-    private String porInstance;
-    private String porValue;
-    private String taskClassificationKey;
-    private String taskClassificationCategory;
-    private String attachmentClassificationKey;
-    private String comment;
-    private String oldValue;
-    private String newValue;
-    private String custom1;
-    private String custom2;
-    private String custom3;
-    private String custom4;
-    private String oldData;
-    private String newData;
+  private String businessProcessId;
+  private String parentBusinessProcessId;
+  private String taskId;
+  private String eventType;
+  private String created;
+  private String userId;
+  private String domain;
+  private String workbasketKey;
+  private String porCompany;
+  private String porType;
+  private String porSystem;
+  private String porInstance;
+  private String porValue;
+  private String taskClassificationKey;
+  private String taskClassificationCategory;
+  private String attachmentClassificationKey;
+  private String comment;
+  private String oldValue;
+  private String newValue;
+  private String custom1;
+  private String custom2;
+  private String custom3;
+  private String custom4;
+  private String oldData;
+  private String newData;
 
-    public String getTaskHistoryId() {
-        return taskHistoryEventId;
-    }
+  public String getTaskHistoryId() {
+    return taskHistoryEventId;
+  }
 
-    public void setTaskHistoryId(String taskHistoryId) {
-        this.taskHistoryEventId = taskHistoryId;
-    }
+  public void setTaskHistoryId(String taskHistoryId) {
+    this.taskHistoryEventId = taskHistoryId;
+  }
 
-    public String getBusinessProcessId() {
-        return businessProcessId;
-    }
+  public String getBusinessProcessId() {
+    return businessProcessId;
+  }
 
-    public void setBusinessProcessId(String businessProcessId) {
-        this.businessProcessId = businessProcessId;
-    }
+  public void setBusinessProcessId(String businessProcessId) {
+    this.businessProcessId = businessProcessId;
+  }
 
-    public String getParentBusinessProcessId() {
-        return parentBusinessProcessId;
-    }
+  public String getParentBusinessProcessId() {
+    return parentBusinessProcessId;
+  }
 
-    public void setParentBusinessProcessId(String parentBusinessProcessId) {
-        this.parentBusinessProcessId = parentBusinessProcessId;
-    }
+  public void setParentBusinessProcessId(String parentBusinessProcessId) {
+    this.parentBusinessProcessId = parentBusinessProcessId;
+  }
 
-    public String getTaskId() {
-        return taskId;
-    }
+  public String getTaskId() {
+    return taskId;
+  }
 
-    public void setTaskId(String taskId) {
-        this.taskId = taskId;
-    }
+  public void setTaskId(String taskId) {
+    this.taskId = taskId;
+  }
 
-    public String getEventType() {
-        return eventType;
-    }
+  public String getEventType() {
+    return eventType;
+  }
 
-    public void setEventType(String eventType) {
-        this.eventType = eventType;
-    }
+  public void setEventType(String eventType) {
+    this.eventType = eventType;
+  }
 
-    public String getCreated() {
-        return created;
-    }
+  public String getCreated() {
+    return created;
+  }
 
-    public void setCreated(String created) {
-        this.created = created;
-    }
+  public void setCreated(String created) {
+    this.created = created;
+  }
 
-    public String getUserId() {
-        return userId;
-    }
+  public String getUserId() {
+    return userId;
+  }
 
-    public void setUserId(String userId) {
-        this.userId = userId;
-    }
+  public void setUserId(String userId) {
+    this.userId = userId;
+  }
 
-    public String getDomain() {
-        return domain;
-    }
+  public String getDomain() {
+    return domain;
+  }
 
-    public void setDomain(String domain) {
-        this.domain = domain;
-    }
+  public void setDomain(String domain) {
+    this.domain = domain;
+  }
 
-    public String getWorkbasketKey() {
-        return workbasketKey;
-    }
+  public String getWorkbasketKey() {
+    return workbasketKey;
+  }
 
-    public void setWorkbasketKey(String workbasketKey) {
-        this.workbasketKey = workbasketKey;
-    }
+  public void setWorkbasketKey(String workbasketKey) {
+    this.workbasketKey = workbasketKey;
+  }
 
-    public String getPorCompany() {
-        return porCompany;
-    }
+  public String getPorCompany() {
+    return porCompany;
+  }
 
-    public void setPorCompany(String porCompany) {
-        this.porCompany = porCompany;
-    }
+  public void setPorCompany(String porCompany) {
+    this.porCompany = porCompany;
+  }
 
-    public String getPorType() {
-        return porType;
-    }
+  public String getPorType() {
+    return porType;
+  }
 
-    public void setPorType(String porType) {
-        this.porType = porType;
-    }
+  public void setPorType(String porType) {
+    this.porType = porType;
+  }
 
-    public String getPorSystem() {
-        return porSystem;
-    }
+  public String getPorSystem() {
+    return porSystem;
+  }
 
-    public void setPorSystem(String porSystem) {
-        this.porSystem = porSystem;
-    }
+  public void setPorSystem(String porSystem) {
+    this.porSystem = porSystem;
+  }
 
-    public String getPorInstance() {
-        return porInstance;
-    }
+  public String getPorInstance() {
+    return porInstance;
+  }
 
-    public void setPorInstance(String porInstance) {
-        this.porInstance = porInstance;
-    }
+  public void setPorInstance(String porInstance) {
+    this.porInstance = porInstance;
+  }
 
-    public String getPorValue() {
-        return porValue;
-    }
+  public String getPorValue() {
+    return porValue;
+  }
 
-    public void setPorValue(String porValue) {
-        this.porValue = porValue;
-    }
+  public void setPorValue(String porValue) {
+    this.porValue = porValue;
+  }
 
-    public String getTaskClassificationKey() {
-        return taskClassificationKey;
-    }
+  public String getTaskClassificationKey() {
+    return taskClassificationKey;
+  }
 
-    public void setTaskClassificationKey(String taskClassificationKey) {
-        this.taskClassificationKey = taskClassificationKey;
-    }
+  public void setTaskClassificationKey(String taskClassificationKey) {
+    this.taskClassificationKey = taskClassificationKey;
+  }
 
-    public String getTaskClassificationCategory() {
-        return taskClassificationCategory;
-    }
+  public String getTaskClassificationCategory() {
+    return taskClassificationCategory;
+  }
 
-    public void setTaskClassificationCategory(String taskClassificationCategory) {
-        this.taskClassificationCategory = taskClassificationCategory;
-    }
+  public void setTaskClassificationCategory(String taskClassificationCategory) {
+    this.taskClassificationCategory = taskClassificationCategory;
+  }
 
-    public String getAttachmentClassificationKey() {
-        return attachmentClassificationKey;
-    }
+  public String getAttachmentClassificationKey() {
+    return attachmentClassificationKey;
+  }
 
-    public void setAttachmentClassificationKey(String attachmentClassificationKey) {
-        this.attachmentClassificationKey = attachmentClassificationKey;
-    }
+  public void setAttachmentClassificationKey(String attachmentClassificationKey) {
+    this.attachmentClassificationKey = attachmentClassificationKey;
+  }
 
-    public String getComment() {
-        return comment;
-    }
+  public String getComment() {
+    return comment;
+  }
 
-    public void setComment(String comment) {
-        this.comment = comment;
-    }
+  public void setComment(String comment) {
+    this.comment = comment;
+  }
 
-    public String getOldValue() {
-        return oldValue;
-    }
+  public String getOldValue() {
+    return oldValue;
+  }
 
-    public void setOldValue(String oldValue) {
-        this.oldValue = oldValue;
-    }
+  public void setOldValue(String oldValue) {
+    this.oldValue = oldValue;
+  }
 
-    public String getNewValue() {
-        return newValue;
-    }
+  public String getNewValue() {
+    return newValue;
+  }
 
-    public void setNewValue(String newValue) {
-        this.newValue = newValue;
-    }
+  public void setNewValue(String newValue) {
+    this.newValue = newValue;
+  }
 
-    public String getCustom1() {
-        return custom1;
-    }
+  public String getCustom1() {
+    return custom1;
+  }
 
-    public void setCustom1(String custom1) {
-        this.custom1 = custom1;
-    }
+  public void setCustom1(String custom1) {
+    this.custom1 = custom1;
+  }
 
-    public String getCustom2() {
-        return custom2;
-    }
+  public String getCustom2() {
+    return custom2;
+  }
 
-    public void setCustom2(String custom2) {
-        this.custom2 = custom2;
-    }
+  public void setCustom2(String custom2) {
+    this.custom2 = custom2;
+  }
 
-    public String getCustom3() {
-        return custom3;
-    }
+  public String getCustom3() {
+    return custom3;
+  }
 
-    public void setCustom3(String custom3) {
-        this.custom3 = custom3;
-    }
+  public void setCustom3(String custom3) {
+    this.custom3 = custom3;
+  }
 
-    public String getCustom4() {
-        return custom4;
-    }
+  public String getCustom4() {
+    return custom4;
+  }
 
-    public void setCustom4(String custom4) {
-        this.custom4 = custom4;
-    }
+  public void setCustom4(String custom4) {
+    this.custom4 = custom4;
+  }
 
-    public String getOldData() {
-        return oldData;
-    }
+  public String getOldData() {
+    return oldData;
+  }
 
-    public void setOldData(String oldData) {
-        this.oldData = oldData;
-    }
+  public void setOldData(String oldData) {
+    this.oldData = oldData;
+  }
 
-    public String getNewData() {
-        return newData;
-    }
+  public String getNewData() {
+    return newData;
+  }
 
-    public void setNewData(String newData) {
-        this.newData = newData;
-    }
+  public void setNewData(String newData) {
+    this.newData = newData;
+  }
 
-    @Override
-    public String toString() {
-        return "TaskHistoryEventResource ["
-            + "taskHistoryEventId= " + this.taskHistoryEventId
-            + "businessProcessId= " + this.businessProcessId
-            + "parentBusinessProcessId= " + this.parentBusinessProcessId
-            + "taskId= " + this.taskId
-            + "eventType= " + this.eventType
-            + "created= " + this.created
-            + "userId= " + this.userId
-            + "domain= " + this.domain
-            + "workbasketKey= " + this.workbasketKey
-            + "oldValue= " + this.oldValue
-            + "newValue= " + this.newValue
-            + "oldData= " + this.oldData
-            + "newData= " + this.newData
-            + "]";
-    }
+  @Override
+  public String toString() {
+    return "TaskHistoryEventResource ["
+        + "taskHistoryEventId= "
+        + this.taskHistoryEventId
+        + "businessProcessId= "
+        + this.businessProcessId
+        + "parentBusinessProcessId= "
+        + this.parentBusinessProcessId
+        + "taskId= "
+        + this.taskId
+        + "eventType= "
+        + this.eventType
+        + "created= "
+        + this.created
+        + "userId= "
+        + this.userId
+        + "domain= "
+        + this.domain
+        + "workbasketKey= "
+        + this.workbasketKey
+        + "oldValue= "
+        + this.oldValue
+        + "newValue= "
+        + this.newValue
+        + "oldData= "
+        + this.oldData
+        + "newData= "
+        + this.newData
+        + "]";
+  }
 }

history/taskana-simplehistory-rest-spring/src/main/java/pro/taskana/rest/simplehistory/TaskHistoryEventController.java

@@ -4,7 +4,6 @@ import java.time.Instant;
 import java.time.LocalDate;
 import java.time.ZoneId;
 import java.util.List;
-
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 import org.springframework.hateoas.config.EnableHypermediaSupport;
@@ -30,445 +29,456 @@ import pro.taskana.simplehistory.impl.HistoryEventImpl;
 import pro.taskana.simplehistory.impl.SimpleHistoryServiceImpl;
 import pro.taskana.simplehistory.query.HistoryQuery;
 
-/**
- * Controller for all TaskHistoryEvent related endpoints.
- */
+/** Controller for all TaskHistoryEvent related endpoints. */
 @RestController
 @EnableHypermediaSupport(type = EnableHypermediaSupport.HypermediaType.HAL)
 @RequestMapping(path = "/api/v1/task-history-event", produces = "application/hal+json")
 public class TaskHistoryEventController extends AbstractPagingController {
 
-    private static final Logger LOGGER = LoggerFactory.getLogger(TaskHistoryEventController.class);
+  private static final Logger LOGGER = LoggerFactory.getLogger(TaskHistoryEventController.class);
 
-    private static final String LIKE = "%";
+  private static final String LIKE = "%";
 
-    private static final String BUSINESS_PROCESS_ID = "business-process-id";
+  private static final String BUSINESS_PROCESS_ID = "business-process-id";
 
-    private static final String BUSINESS_PROCESS_ID_LIKE = "business-process-id-like";
+  private static final String BUSINESS_PROCESS_ID_LIKE = "business-process-id-like";
 
-    private static final String PARENT_BUSINESS_PROCESS_ID = "parent-business-process-id";
+  private static final String PARENT_BUSINESS_PROCESS_ID = "parent-business-process-id";
 
-    private static final String PARENT_BUSINESS_PROCESS_ID_LIKE = "parent-business-process-id-like";
+  private static final String PARENT_BUSINESS_PROCESS_ID_LIKE = "parent-business-process-id-like";
 
-    private static final String TASK_ID = "task-id";
+  private static final String TASK_ID = "task-id";
 
-    private static final String TASK_ID_LIKE = "task-id-like";
+  private static final String TASK_ID_LIKE = "task-id-like";
 
-    private static final String EVENT_TYPE = "event-type";
+  private static final String EVENT_TYPE = "event-type";
 
-    private static final String EVENT_TYPE_LIKE = "event-type-like";
+  private static final String EVENT_TYPE_LIKE = "event-type-like";
 
-    private static final String CREATED = "created";
+  private static final String CREATED = "created";
 
-    private static final String USER_ID = "user-id";
+  private static final String USER_ID = "user-id";
 
-    private static final String USER_ID_LIKE = "user-id-like";
+  private static final String USER_ID_LIKE = "user-id-like";
 
-    private static final String DOMAIN = "domain";
+  private static final String DOMAIN = "domain";
 
-    private static final String WORKBASKET_KEY = "workbasket-key";
+  private static final String WORKBASKET_KEY = "workbasket-key";
 
-    private static final String WORKBASKET_KEY_LIKE = "workbasket-key-like";
+  private static final String WORKBASKET_KEY_LIKE = "workbasket-key-like";
 
-    private static final String POR_COMPANY = "por-company";
+  private static final String POR_COMPANY = "por-company";
 
-    private static final String POR_COMPANY_LIKE = "por-company-like";
+  private static final String POR_COMPANY_LIKE = "por-company-like";
 
-    private static final String POR_SYSTEM = "por-system";
+  private static final String POR_SYSTEM = "por-system";
 
-    private static final String POR_SYSTEM_LIKE = "por-system-like";
+  private static final String POR_SYSTEM_LIKE = "por-system-like";
 
-    private static final String POR_INSTANCE = "por-instance";
+  private static final String POR_INSTANCE = "por-instance";
 
-    private static final String POR_INSTANCE_LIKE = "por-instance-like";
+  private static final String POR_INSTANCE_LIKE = "por-instance-like";
 
-    private static final String POR_TYPE = "por-type";
+  private static final String POR_TYPE = "por-type";
 
-    private static final String POR_TYPE_LIKE = "por-type-like";
+  private static final String POR_TYPE_LIKE = "por-type-like";
 
-    private static final String POR_VALUE = "por-value";
+  private static final String POR_VALUE = "por-value";
 
-    private static final String POR_VALUE_LIKE = "por-value-like";
+  private static final String POR_VALUE_LIKE = "por-value-like";
 
-    private static final String TASK_CLASSIFICATION_KEY = "task-classification-key";
+  private static final String TASK_CLASSIFICATION_KEY = "task-classification-key";
 
-    private static final String TASK_CLASSIFICATION_KEY_LIKE = "task-classification-key-like";
+  private static final String TASK_CLASSIFICATION_KEY_LIKE = "task-classification-key-like";
 
-    private static final String TASK_CLASSIFICATION_CATEGORY = "task-classification-category";
+  private static final String TASK_CLASSIFICATION_CATEGORY = "task-classification-category";
 
-    private static final String TASK_CLASSIFICATION_CATEGORY_LIKE = "task-classification-category-like";
+  private static final String TASK_CLASSIFICATION_CATEGORY_LIKE =
+      "task-classification-category-like";
 
-    private static final String ATTACHMENT_CLASSIFICATION_KEY = "attachment-classification-key";
+  private static final String ATTACHMENT_CLASSIFICATION_KEY = "attachment-classification-key";
 
-    private static final String ATTACHMENT_CLASSIFICATION_KEY_LIKE = "attachment-classification-key-like";
+  private static final String ATTACHMENT_CLASSIFICATION_KEY_LIKE =
+      "attachment-classification-key-like";
 
-    private static final String CUSTOM_1 = "custom-1";
+  private static final String CUSTOM_1 = "custom-1";
 
-    private static final String CUSTOM_1_LIKE = "custom-1-like";
+  private static final String CUSTOM_1_LIKE = "custom-1-like";
 
-    private static final String CUSTOM_2 = "custom-2";
+  private static final String CUSTOM_2 = "custom-2";
 
-    private static final String CUSTOM_2_LIKE = "custom-2-like";
+  private static final String CUSTOM_2_LIKE = "custom-2-like";
 
-    private static final String CUSTOM_3 = "custom-3";
+  private static final String CUSTOM_3 = "custom-3";
 
-    private static final String CUSTOM_3_LIKE = "custom-3-like";
+  private static final String CUSTOM_3_LIKE = "custom-3-like";
 
-    private static final String CUSTOM_4 = "custom-4";
+  private static final String CUSTOM_4 = "custom-4";
 
-    private static final String CUSTOM_4_LIKE = "custom-4-like";
+  private static final String CUSTOM_4_LIKE = "custom-4-like";
 
-    private static final String SORT_BY = "sort-by";
+  private static final String SORT_BY = "sort-by";
 
-    private static final String SORT_DIRECTION = "order";
+  private static final String SORT_DIRECTION = "order";
 
-    private static final String PAGING_PAGE = "page";
+  private static final String PAGING_PAGE = "page";
 
-    private static final String PAGING_PAGE_SIZE = "page-size";
+  private static final String PAGING_PAGE_SIZE = "page-size";
 
-    private SimpleHistoryServiceImpl simpleHistoryService;
+  private SimpleHistoryServiceImpl simpleHistoryService;
 
-    private TaskanaEngineConfiguration taskanaEngineConfiguration;
+  private TaskanaEngineConfiguration taskanaEngineConfiguration;
 
-    public TaskHistoryEventController(TaskanaEngineConfiguration taskanaEngineConfiguration,
-        SimpleHistoryServiceImpl simpleHistoryServiceImpl) {
-        this.taskanaEngineConfiguration = taskanaEngineConfiguration;
-        this.simpleHistoryService = simpleHistoryServiceImpl;
-        simpleHistoryService.initialize(taskanaEngineConfiguration);
+  public TaskHistoryEventController(
+      TaskanaEngineConfiguration taskanaEngineConfiguration,
+      SimpleHistoryServiceImpl simpleHistoryServiceImpl) {
+    this.taskanaEngineConfiguration = taskanaEngineConfiguration;
+    this.simpleHistoryService = simpleHistoryServiceImpl;
+    simpleHistoryService.initialize(taskanaEngineConfiguration);
+  }
+
+  @GetMapping
+  @Transactional(readOnly = true, rollbackFor = Exception.class)
+  public ResponseEntity<TaskHistoryEventListResource> getTaskHistoryEvent(
+      @RequestParam MultiValueMap<String, String> params) throws InvalidArgumentException {
+    if (LOGGER.isDebugEnabled()) {
+      LOGGER.debug("Entry to getTaskHistoryEvent(params= {})", LoggerUtils.mapToString(params));
     }
 
-    @GetMapping
-    @Transactional(readOnly = true, rollbackFor = Exception.class)
-    public ResponseEntity<TaskHistoryEventListResource> getTaskHistoryEvent(
-        @RequestParam MultiValueMap<String, String> params) throws InvalidArgumentException {
-        if (LOGGER.isDebugEnabled()) {
-            LOGGER.debug("Entry to getTaskHistoryEvent(params= {})", LoggerUtils.mapToString(params));
-        }
+    HistoryQuery query = simpleHistoryService.createHistoryQuery();
+    query = applySortingParams(query, params);
+    query = applyFilterParams(query, params);
 
-        HistoryQuery query = simpleHistoryService.createHistoryQuery();
-        query = applySortingParams(query, params);
-        query = applyFilterParams(query, params);
-
-        PageMetadata pageMetadata = null;
-        List<HistoryEventImpl> historyEvents = null;
-        String page = params.getFirst(PAGING_PAGE);
-        String pageSize = params.getFirst(PAGING_PAGE_SIZE);
-        params.remove(PAGING_PAGE);
-        params.remove(PAGING_PAGE_SIZE);
-        validateNoInvalidParameterIsLeft(params);
-        if (page != null && pageSize != null) {
-            long totalElements = query.count();
-            pageMetadata = initPageMetadata(pageSize, page, totalElements);
-            historyEvents = query.listPage((int) pageMetadata.getNumber(),
-                (int) pageMetadata.getSize());
-        } else if (page == null && pageSize == null) {
-            historyEvents = query.list();
-        } else {
-            throw new InvalidArgumentException("Paging information is incomplete.");
-        }
-
-        TaskHistoryEventListAssembler assembler = new TaskHistoryEventListAssembler();
-        TaskHistoryEventListResource pagedResources = assembler.toResources(historyEvents, pageMetadata);
-
-        if (LOGGER.isDebugEnabled()) {
-            LOGGER.debug("Exit from getTaskHistoryEvent(), returning {}",
-                new ResponseEntity<>(pagedResources, HttpStatus.OK));
-        }
-
-        return new ResponseEntity<>(pagedResources, HttpStatus.OK);
+    PageMetadata pageMetadata = null;
+    List<HistoryEventImpl> historyEvents = null;
+    String page = params.getFirst(PAGING_PAGE);
+    String pageSize = params.getFirst(PAGING_PAGE_SIZE);
+    params.remove(PAGING_PAGE);
+    params.remove(PAGING_PAGE_SIZE);
+    validateNoInvalidParameterIsLeft(params);
+    if (page != null && pageSize != null) {
+      long totalElements = query.count();
+      pageMetadata = initPageMetadata(pageSize, page, totalElements);
+      historyEvents = query.listPage((int) pageMetadata.getNumber(), (int) pageMetadata.getSize());
+    } else if (page == null && pageSize == null) {
+      historyEvents = query.list();
+    } else {
+      throw new InvalidArgumentException("Paging information is incomplete.");
     }
 
-    private HistoryQuery applySortingParams(HistoryQuery query, MultiValueMap<String, String> params)
-        throws IllegalArgumentException, InvalidArgumentException {
-        if (LOGGER.isDebugEnabled()) {
-            LOGGER.debug("Entry to applySortingParams(params= {})", LoggerUtils.mapToString(params));
-        }
+    TaskHistoryEventListAssembler assembler = new TaskHistoryEventListAssembler();
+    TaskHistoryEventListResource pagedResources =
+        assembler.toResources(historyEvents, pageMetadata);
 
-        String sortBy = params.getFirst(SORT_BY);
-        if (sortBy != null) {
-            BaseQuery.SortDirection sortDirection;
-            if (params.getFirst(SORT_DIRECTION) != null && "desc".equals(params.getFirst(SORT_DIRECTION))) {
-                sortDirection = BaseQuery.SortDirection.DESCENDING;
-            } else {
-                sortDirection = BaseQuery.SortDirection.ASCENDING;
-            }
-            switch (sortBy) {
-                case (BUSINESS_PROCESS_ID):
-                    query = query.orderByBusinessProcessId(sortDirection);
-                    break;
-                case (PARENT_BUSINESS_PROCESS_ID):
-                    query = query.orderByParentBusinessProcessId(sortDirection);
-                    break;
-                case (TASK_ID):
-                    query = query.orderByTaskId(sortDirection);
-                    break;
-                case (EVENT_TYPE):
-                    query = query.orderByEventType(sortDirection);
-                    break;
-                case (CREATED):
-                    query = query.orderByCreated(sortDirection);
-                    break;
-                case (USER_ID):
-                    query = query.orderByUserId(sortDirection);
-                    break;
-                case (DOMAIN):
-                    query = query.orderByDomain(sortDirection);
-                    break;
-                case (WORKBASKET_KEY):
-                    query = query.orderByWorkbasketKey(sortDirection);
-                    break;
-                case (POR_COMPANY):
-                    query = query.orderByPorCompany(sortDirection);
-                    break;
-                case (POR_SYSTEM):
-                    query = query.orderByPorSystem(sortDirection);
-                    break;
-                case (POR_INSTANCE):
-                    query = query.orderByPorInstance(sortDirection);
-                    break;
-                case (POR_TYPE):
-                    query = query.orderByPorType(sortDirection);
-                    break;
-                case (POR_VALUE):
-                    query = query.orderByPorValue(sortDirection);
-                    break;
-                case (TASK_CLASSIFICATION_KEY):
-                    query = query.orderByTaskClassificationKey(sortDirection);
-                    break;
-                case (TASK_CLASSIFICATION_CATEGORY):
-                    query = query.orderByTaskClassificationCategory(sortDirection);
-                    break;
-                case (ATTACHMENT_CLASSIFICATION_KEY):
-                    query = query.orderByAttachmentClassificationKey(sortDirection);
-                    break;
-                case (CUSTOM_1):
-                    query = query.orderByCustomAttribute(1, sortDirection);
-                    break;
-                case (CUSTOM_2):
-                    query = query.orderByCustomAttribute(2, sortDirection);
-                    break;
-                case (CUSTOM_3):
-                    query = query.orderByCustomAttribute(3, sortDirection);
-                    break;
-                case (CUSTOM_4):
-                    query = query.orderByCustomAttribute(4, sortDirection);
-                    break;
-                default:
-                    throw new IllegalArgumentException("Unknown order '" + sortBy + "'");
-            }
-        }
-        params.remove(SORT_BY);
-        params.remove(SORT_DIRECTION);
-        if (LOGGER.isDebugEnabled()) {
-            LOGGER.debug("Exit from applySortingParams(), returning {}", query);
-        }
-
-        return query;
+    if (LOGGER.isDebugEnabled()) {
+      LOGGER.debug(
+          "Exit from getTaskHistoryEvent(), returning {}",
+          new ResponseEntity<>(pagedResources, HttpStatus.OK));
     }
 
-    private HistoryQuery applyFilterParams(HistoryQuery query,
-        MultiValueMap<String, String> params) {
-        if (LOGGER.isDebugEnabled()) {
-            LOGGER.debug("Entry to applyFilterParams(query= {}, params= {})", query, params);
-        }
+    return new ResponseEntity<>(pagedResources, HttpStatus.OK);
+  }
 
-        if (params.containsKey(BUSINESS_PROCESS_ID)) {
-            String[] businessProcessId = extractCommaSeparatedFields(params.get(BUSINESS_PROCESS_ID));
-            query.businessProcessIdIn(businessProcessId);
-            params.remove(BUSINESS_PROCESS_ID);
-        }
-        if (params.containsKey(BUSINESS_PROCESS_ID_LIKE)) {
-            query.businessProcessIdLike(LIKE + params.get(BUSINESS_PROCESS_ID_LIKE).get(0) + LIKE);
-            params.remove(BUSINESS_PROCESS_ID_LIKE);
-        }
-        if (params.containsKey(PARENT_BUSINESS_PROCESS_ID)) {
-            String[] parentBusinessProcessId = extractCommaSeparatedFields(params.get(PARENT_BUSINESS_PROCESS_ID));
-            query.parentBusinessProcessIdIn(parentBusinessProcessId);
-            params.remove(PARENT_BUSINESS_PROCESS_ID);
-        }
-        if (params.containsKey(PARENT_BUSINESS_PROCESS_ID_LIKE)) {
-            query.parentBusinessProcessIdLike(LIKE + params.get(PARENT_BUSINESS_PROCESS_ID_LIKE).get(0) + LIKE);
-            params.remove(PARENT_BUSINESS_PROCESS_ID_LIKE);
-        }
-        if (params.containsKey(TASK_ID)) {
-            String[] taskId = extractCommaSeparatedFields(params.get(TASK_ID));
-            query.taskIdIn(taskId);
-            params.remove(TASK_ID);
-        }
-        if (params.containsKey(TASK_ID_LIKE)) {
-            query.taskIdLike(LIKE + params.get(TASK_ID_LIKE).get(0) + LIKE);
-            params.remove(TASK_ID_LIKE);
-        }
-        if (params.containsKey(EVENT_TYPE)) {
-            String[] eventType = extractCommaSeparatedFields(params.get(EVENT_TYPE));
-            query.eventTypeIn(eventType);
-            params.remove(EVENT_TYPE);
-        }
-        if (params.containsKey(EVENT_TYPE_LIKE)) {
-            query.eventTypeLike(LIKE + params.get(EVENT_TYPE_LIKE).get(0) + LIKE);
-            params.remove(EVENT_TYPE_LIKE);
-        }
-        if (params.containsKey(CREATED)) {
-            String[] created = extractCommaSeparatedFields(params.get(CREATED));
-            TimeInterval timeInterval = getTimeIntervalOf(created);
-            query.createdWithin(timeInterval);
-            params.remove(CREATED);
-        }
-        if (params.containsKey(USER_ID)) {
-            String[] userId = extractCommaSeparatedFields(params.get(USER_ID));
-            query.userIdIn(userId);
-            params.remove(USER_ID);
-        }
-        if (params.containsKey(USER_ID_LIKE)) {
-            query.userIdLike(LIKE + params.get(USER_ID_LIKE).get(0) + LIKE);
-            params.remove(USER_ID_LIKE);
-        }
-        if (params.containsKey(DOMAIN)) {
-            query.domainIn(extractCommaSeparatedFields(params.get(DOMAIN)));
-            params.remove(DOMAIN);
-        }
-        if (params.containsKey(WORKBASKET_KEY)) {
-            String[] workbasketKey = extractCommaSeparatedFields(params.get(WORKBASKET_KEY));
-            query.workbasketKeyIn(workbasketKey);
-            params.remove(WORKBASKET_KEY);
-        }
-        if (params.containsKey(WORKBASKET_KEY_LIKE)) {
-            query.workbasketKeyLike(LIKE + params.get(WORKBASKET_KEY_LIKE).get(0) + LIKE);
-            params.remove(WORKBASKET_KEY_LIKE);
-        }
-        if (params.containsKey(POR_COMPANY)) {
-            String[] porCompany = extractCommaSeparatedFields(params.get(POR_COMPANY));
-            query.porCompanyIn(porCompany);
-            params.remove(POR_COMPANY);
-        }
-        if (params.containsKey(POR_COMPANY_LIKE)) {
-            query.porCompanyLike(LIKE + params.get(POR_COMPANY_LIKE).get(0) + LIKE);
-            params.remove(POR_COMPANY_LIKE);
-        }
-        if (params.containsKey(POR_SYSTEM)) {
-            String[] porSystem = extractCommaSeparatedFields(params.get(POR_SYSTEM));
-            query.porSystemIn(porSystem);
-            params.remove(POR_SYSTEM);
-        }
-        if (params.containsKey(POR_SYSTEM_LIKE)) {
-            query.porSystemLike(LIKE + params.get(POR_SYSTEM_LIKE).get(0) + LIKE);
-            params.remove(POR_SYSTEM_LIKE);
-        }
-        if (params.containsKey(POR_INSTANCE)) {
-            String[] porInstance = extractCommaSeparatedFields(params.get(POR_INSTANCE));
-            query.porInstanceIn(porInstance);
-            params.remove(POR_INSTANCE);
-        }
-        if (params.containsKey(POR_INSTANCE_LIKE)) {
-            query.porInstanceLike(LIKE + params.get(POR_INSTANCE_LIKE).get(0) + LIKE);
-            params.remove(POR_INSTANCE_LIKE);
-        }
-        if (params.containsKey(POR_TYPE)) {
-            String[] porType = extractCommaSeparatedFields(params.get(POR_TYPE));
-            query.porTypeIn(porType);
-            params.remove(POR_TYPE);
-        }
-        if (params.containsKey(POR_TYPE_LIKE)) {
-            query.porTypeLike(LIKE + params.get(POR_TYPE_LIKE).get(0) + LIKE);
-            params.remove(POR_TYPE_LIKE);
-        }
-        if (params.containsKey(POR_VALUE)) {
-            String[] porValue = extractCommaSeparatedFields(params.get(POR_VALUE));
-            query.porValueIn(porValue);
-            params.remove(POR_VALUE);
-        }
-        if (params.containsKey(POR_VALUE_LIKE)) {
-            query.porValueLike(LIKE + params.get(POR_VALUE_LIKE).get(0) + LIKE);
-            params.remove(POR_VALUE_LIKE);
-        }
-        if (params.containsKey(TASK_CLASSIFICATION_KEY)) {
-            String[] taskClassificationKey = extractCommaSeparatedFields(params.get(TASK_CLASSIFICATION_KEY));
-            query.taskClassificationKeyIn(taskClassificationKey);
-            params.remove(TASK_CLASSIFICATION_KEY);
-        }
-        if (params.containsKey(TASK_CLASSIFICATION_KEY_LIKE)) {
-            query.taskClassificationKeyLike(LIKE + params.get(TASK_CLASSIFICATION_KEY_LIKE).get(0) + LIKE);
-            params.remove(TASK_CLASSIFICATION_KEY_LIKE);
-        }
-        if (params.containsKey(TASK_CLASSIFICATION_CATEGORY)) {
-            String[] taskClassificationCategory = extractCommaSeparatedFields(params.get(TASK_CLASSIFICATION_CATEGORY));
-            query.taskClassificationCategoryIn(taskClassificationCategory);
-            params.remove(TASK_CLASSIFICATION_CATEGORY);
-        }
-        if (params.containsKey(TASK_CLASSIFICATION_CATEGORY_LIKE)) {
-            query.taskClassificationCategoryLike(LIKE + params.get(TASK_CLASSIFICATION_CATEGORY_LIKE).get(0) + LIKE);
-            params.remove(TASK_CLASSIFICATION_CATEGORY_LIKE);
-        }
-        if (params.containsKey(ATTACHMENT_CLASSIFICATION_KEY)) {
-            String[] attachmentClassificationKey = extractCommaSeparatedFields(
-                params.get(ATTACHMENT_CLASSIFICATION_KEY));
-            query.attachmentClassificationKeyIn(attachmentClassificationKey);
-            params.remove(ATTACHMENT_CLASSIFICATION_KEY);
-        }
-        if (params.containsKey(ATTACHMENT_CLASSIFICATION_KEY_LIKE)) {
-            query.attachmentClassificationKeyLike(LIKE + params.get(ATTACHMENT_CLASSIFICATION_KEY_LIKE).get(0) + LIKE);
-            params.remove(ATTACHMENT_CLASSIFICATION_KEY_LIKE);
-        }
-        if (params.containsKey(CUSTOM_1)) {
-            String[] custom1 = extractCommaSeparatedFields(params.get(CUSTOM_1));
-            query.custom1In(custom1);
-            params.remove(CUSTOM_1);
-        }
-        if (params.containsKey(CUSTOM_1_LIKE)) {
-            query.custom1Like(LIKE + params.get(CUSTOM_1_LIKE).get(0) + LIKE);
-            params.remove(CUSTOM_1_LIKE);
-        }
-        if (params.containsKey(CUSTOM_2)) {
-            String[] custom2 = extractCommaSeparatedFields(params.get(CUSTOM_2));
-            query.custom2In(custom2);
-            params.remove(CUSTOM_2);
-        }
-        if (params.containsKey(CUSTOM_2_LIKE)) {
-            query.custom2Like(LIKE + params.get(CUSTOM_2_LIKE).get(0) + LIKE);
-            params.remove(CUSTOM_2_LIKE);
-        }
-        if (params.containsKey(CUSTOM_3)) {
-            String[] custom3 = extractCommaSeparatedFields(params.get(CUSTOM_3));
-            query.custom3In(custom3);
-            params.remove(CUSTOM_3);
-        }
-        if (params.containsKey(CUSTOM_3_LIKE)) {
-            query.custom3Like(LIKE + params.get(CUSTOM_3_LIKE).get(0) + LIKE);
-            params.remove(CUSTOM_3_LIKE);
-        }
-        if (params.containsKey(CUSTOM_4)) {
-            String[] custom4 = extractCommaSeparatedFields(params.get(CUSTOM_4));
-            query.custom4In(custom4);
-            params.remove(CUSTOM_4);
-        }
-        if (params.containsKey(CUSTOM_4_LIKE)) {
-            query.custom4Like(LIKE + params.get(CUSTOM_4_LIKE).get(0) + LIKE);
-            params.remove(CUSTOM_4_LIKE);
-        }
-        if (LOGGER.isDebugEnabled()) {
-            LOGGER.debug("Exit from applyFilterParams(), returning {}", query);
-        }
-
-        return query;
+  private HistoryQuery applySortingParams(HistoryQuery query, MultiValueMap<String, String> params)
+      throws IllegalArgumentException, InvalidArgumentException {
+    if (LOGGER.isDebugEnabled()) {
+      LOGGER.debug("Entry to applySortingParams(params= {})", LoggerUtils.mapToString(params));
     }
 
-    private TimeInterval getTimeIntervalOf(String[] created) {
-        LocalDate begin;
-        LocalDate end;
-        try {
-            begin = LocalDate.parse(created[0]);
-        } catch (Exception e) {
-            throw new IllegalArgumentException(
-                "Cannot parse String '" + created[0] + "'. Expected a String of the Format 'yyyy-MM-dd'.");
-        }
-        if (created.length < 2) {
-            end = begin.plusDays(1);
-        } else {
-            end = LocalDate.parse(created[1]);
-        }
-        Instant beginInst = begin.atStartOfDay(ZoneId.systemDefault()).toInstant();
-        Instant endInst = end.atStartOfDay(ZoneId.systemDefault()).toInstant();
-        TimeInterval timeInterval = new TimeInterval(beginInst, endInst);
-        return timeInterval;
+    String sortBy = params.getFirst(SORT_BY);
+    if (sortBy != null) {
+      BaseQuery.SortDirection sortDirection;
+      if (params.getFirst(SORT_DIRECTION) != null
+          && "desc".equals(params.getFirst(SORT_DIRECTION))) {
+        sortDirection = BaseQuery.SortDirection.DESCENDING;
+      } else {
+        sortDirection = BaseQuery.SortDirection.ASCENDING;
+      }
+      switch (sortBy) {
+        case (BUSINESS_PROCESS_ID):
+          query = query.orderByBusinessProcessId(sortDirection);
+          break;
+        case (PARENT_BUSINESS_PROCESS_ID):
+          query = query.orderByParentBusinessProcessId(sortDirection);
+          break;
+        case (TASK_ID):
+          query = query.orderByTaskId(sortDirection);
+          break;
+        case (EVENT_TYPE):
+          query = query.orderByEventType(sortDirection);
+          break;
+        case (CREATED):
+          query = query.orderByCreated(sortDirection);
+          break;
+        case (USER_ID):
+          query = query.orderByUserId(sortDirection);
+          break;
+        case (DOMAIN):
+          query = query.orderByDomain(sortDirection);
+          break;
+        case (WORKBASKET_KEY):
+          query = query.orderByWorkbasketKey(sortDirection);
+          break;
+        case (POR_COMPANY):
+          query = query.orderByPorCompany(sortDirection);
+          break;
+        case (POR_SYSTEM):
+          query = query.orderByPorSystem(sortDirection);
+          break;
+        case (POR_INSTANCE):
+          query = query.orderByPorInstance(sortDirection);
+          break;
+        case (POR_TYPE):
+          query = query.orderByPorType(sortDirection);
+          break;
+        case (POR_VALUE):
+          query = query.orderByPorValue(sortDirection);
+          break;
+        case (TASK_CLASSIFICATION_KEY):
+          query = query.orderByTaskClassificationKey(sortDirection);
+          break;
+        case (TASK_CLASSIFICATION_CATEGORY):
+          query = query.orderByTaskClassificationCategory(sortDirection);
+          break;
+        case (ATTACHMENT_CLASSIFICATION_KEY):
+          query = query.orderByAttachmentClassificationKey(sortDirection);
+          break;
+        case (CUSTOM_1):
+          query = query.orderByCustomAttribute(1, sortDirection);
+          break;
+        case (CUSTOM_2):
+          query = query.orderByCustomAttribute(2, sortDirection);
+          break;
+        case (CUSTOM_3):
+          query = query.orderByCustomAttribute(3, sortDirection);
+          break;
+        case (CUSTOM_4):
+          query = query.orderByCustomAttribute(4, sortDirection);
+          break;
+        default:
+          throw new IllegalArgumentException("Unknown order '" + sortBy + "'");
+      }
     }
+    params.remove(SORT_BY);
+    params.remove(SORT_DIRECTION);
+    if (LOGGER.isDebugEnabled()) {
+      LOGGER.debug("Exit from applySortingParams(), returning {}", query);
+    }
+
+    return query;
+  }
+
+  private HistoryQuery applyFilterParams(HistoryQuery query, MultiValueMap<String, String> params) {
+    if (LOGGER.isDebugEnabled()) {
+      LOGGER.debug("Entry to applyFilterParams(query= {}, params= {})", query, params);
+    }
+
+    if (params.containsKey(BUSINESS_PROCESS_ID)) {
+      String[] businessProcessId = extractCommaSeparatedFields(params.get(BUSINESS_PROCESS_ID));
+      query.businessProcessIdIn(businessProcessId);
+      params.remove(BUSINESS_PROCESS_ID);
+    }
+    if (params.containsKey(BUSINESS_PROCESS_ID_LIKE)) {
+      query.businessProcessIdLike(LIKE + params.get(BUSINESS_PROCESS_ID_LIKE).get(0) + LIKE);
+      params.remove(BUSINESS_PROCESS_ID_LIKE);
+    }
+    if (params.containsKey(PARENT_BUSINESS_PROCESS_ID)) {
+      String[] parentBusinessProcessId =
+          extractCommaSeparatedFields(params.get(PARENT_BUSINESS_PROCESS_ID));
+      query.parentBusinessProcessIdIn(parentBusinessProcessId);
+      params.remove(PARENT_BUSINESS_PROCESS_ID);
+    }
+    if (params.containsKey(PARENT_BUSINESS_PROCESS_ID_LIKE)) {
+      query.parentBusinessProcessIdLike(
+          LIKE + params.get(PARENT_BUSINESS_PROCESS_ID_LIKE).get(0) + LIKE);
+      params.remove(PARENT_BUSINESS_PROCESS_ID_LIKE);
+    }
+    if (params.containsKey(TASK_ID)) {
+      String[] taskId = extractCommaSeparatedFields(params.get(TASK_ID));
+      query.taskIdIn(taskId);
+      params.remove(TASK_ID);
+    }
+    if (params.containsKey(TASK_ID_LIKE)) {
+      query.taskIdLike(LIKE + params.get(TASK_ID_LIKE).get(0) + LIKE);
+      params.remove(TASK_ID_LIKE);
+    }
+    if (params.containsKey(EVENT_TYPE)) {
+      String[] eventType = extractCommaSeparatedFields(params.get(EVENT_TYPE));
+      query.eventTypeIn(eventType);
+      params.remove(EVENT_TYPE);
+    }
+    if (params.containsKey(EVENT_TYPE_LIKE)) {
+      query.eventTypeLike(LIKE + params.get(EVENT_TYPE_LIKE).get(0) + LIKE);
+      params.remove(EVENT_TYPE_LIKE);
+    }
+    if (params.containsKey(CREATED)) {
+      String[] created = extractCommaSeparatedFields(params.get(CREATED));
+      TimeInterval timeInterval = getTimeIntervalOf(created);
+      query.createdWithin(timeInterval);
+      params.remove(CREATED);
+    }
+    if (params.containsKey(USER_ID)) {
+      String[] userId = extractCommaSeparatedFields(params.get(USER_ID));
+      query.userIdIn(userId);
+      params.remove(USER_ID);
+    }
+    if (params.containsKey(USER_ID_LIKE)) {
+      query.userIdLike(LIKE + params.get(USER_ID_LIKE).get(0) + LIKE);
+      params.remove(USER_ID_LIKE);
+    }
+    if (params.containsKey(DOMAIN)) {
+      query.domainIn(extractCommaSeparatedFields(params.get(DOMAIN)));
+      params.remove(DOMAIN);
+    }
+    if (params.containsKey(WORKBASKET_KEY)) {
+      String[] workbasketKey = extractCommaSeparatedFields(params.get(WORKBASKET_KEY));
+      query.workbasketKeyIn(workbasketKey);
+      params.remove(WORKBASKET_KEY);
+    }
+    if (params.containsKey(WORKBASKET_KEY_LIKE)) {
+      query.workbasketKeyLike(LIKE + params.get(WORKBASKET_KEY_LIKE).get(0) + LIKE);
+      params.remove(WORKBASKET_KEY_LIKE);
+    }
+    if (params.containsKey(POR_COMPANY)) {
+      String[] porCompany = extractCommaSeparatedFields(params.get(POR_COMPANY));
+      query.porCompanyIn(porCompany);
+      params.remove(POR_COMPANY);
+    }
+    if (params.containsKey(POR_COMPANY_LIKE)) {
+      query.porCompanyLike(LIKE + params.get(POR_COMPANY_LIKE).get(0) + LIKE);
+      params.remove(POR_COMPANY_LIKE);
+    }
+    if (params.containsKey(POR_SYSTEM)) {
+      String[] porSystem = extractCommaSeparatedFields(params.get(POR_SYSTEM));
+      query.porSystemIn(porSystem);
+      params.remove(POR_SYSTEM);
+    }
+    if (params.containsKey(POR_SYSTEM_LIKE)) {
+      query.porSystemLike(LIKE + params.get(POR_SYSTEM_LIKE).get(0) + LIKE);
+      params.remove(POR_SYSTEM_LIKE);
+    }
+    if (params.containsKey(POR_INSTANCE)) {
+      String[] porInstance = extractCommaSeparatedFields(params.get(POR_INSTANCE));
+      query.porInstanceIn(porInstance);
+      params.remove(POR_INSTANCE);
+    }
+    if (params.containsKey(POR_INSTANCE_LIKE)) {
+      query.porInstanceLike(LIKE + params.get(POR_INSTANCE_LIKE).get(0) + LIKE);
+      params.remove(POR_INSTANCE_LIKE);
+    }
+    if (params.containsKey(POR_TYPE)) {
+      String[] porType = extractCommaSeparatedFields(params.get(POR_TYPE));
+      query.porTypeIn(porType);
+      params.remove(POR_TYPE);
+    }
+    if (params.containsKey(POR_TYPE_LIKE)) {
+      query.porTypeLike(LIKE + params.get(POR_TYPE_LIKE).get(0) + LIKE);
+      params.remove(POR_TYPE_LIKE);
+    }
+    if (params.containsKey(POR_VALUE)) {
+      String[] porValue = extractCommaSeparatedFields(params.get(POR_VALUE));
+      query.porValueIn(porValue);
+      params.remove(POR_VALUE);
+    }
+    if (params.containsKey(POR_VALUE_LIKE)) {
+      query.porValueLike(LIKE + params.get(POR_VALUE_LIKE).get(0) + LIKE);
+      params.remove(POR_VALUE_LIKE);
+    }
+    if (params.containsKey(TASK_CLASSIFICATION_KEY)) {
+      String[] taskClassificationKey =
+          extractCommaSeparatedFields(params.get(TASK_CLASSIFICATION_KEY));
+      query.taskClassificationKeyIn(taskClassificationKey);
+      params.remove(TASK_CLASSIFICATION_KEY);
+    }
+    if (params.containsKey(TASK_CLASSIFICATION_KEY_LIKE)) {
+      query.taskClassificationKeyLike(
+          LIKE + params.get(TASK_CLASSIFICATION_KEY_LIKE).get(0) + LIKE);
+      params.remove(TASK_CLASSIFICATION_KEY_LIKE);
+    }
+    if (params.containsKey(TASK_CLASSIFICATION_CATEGORY)) {
+      String[] taskClassificationCategory =
+          extractCommaSeparatedFields(params.get(TASK_CLASSIFICATION_CATEGORY));
+      query.taskClassificationCategoryIn(taskClassificationCategory);
+      params.remove(TASK_CLASSIFICATION_CATEGORY);
+    }
+    if (params.containsKey(TASK_CLASSIFICATION_CATEGORY_LIKE)) {
+      query.taskClassificationCategoryLike(
+          LIKE + params.get(TASK_CLASSIFICATION_CATEGORY_LIKE).get(0) + LIKE);
+      params.remove(TASK_CLASSIFICATION_CATEGORY_LIKE);
+    }
+    if (params.containsKey(ATTACHMENT_CLASSIFICATION_KEY)) {
+      String[] attachmentClassificationKey =
+          extractCommaSeparatedFields(params.get(ATTACHMENT_CLASSIFICATION_KEY));
+      query.attachmentClassificationKeyIn(attachmentClassificationKey);
+      params.remove(ATTACHMENT_CLASSIFICATION_KEY);
+    }
+    if (params.containsKey(ATTACHMENT_CLASSIFICATION_KEY_LIKE)) {
+      query.attachmentClassificationKeyLike(
+          LIKE + params.get(ATTACHMENT_CLASSIFICATION_KEY_LIKE).get(0) + LIKE);
+      params.remove(ATTACHMENT_CLASSIFICATION_KEY_LIKE);
+    }
+    if (params.containsKey(CUSTOM_1)) {
+      String[] custom1 = extractCommaSeparatedFields(params.get(CUSTOM_1));
+      query.custom1In(custom1);
+      params.remove(CUSTOM_1);
+    }
+    if (params.containsKey(CUSTOM_1_LIKE)) {
+      query.custom1Like(LIKE + params.get(CUSTOM_1_LIKE).get(0) + LIKE);
+      params.remove(CUSTOM_1_LIKE);
+    }
+    if (params.containsKey(CUSTOM_2)) {
+      String[] custom2 = extractCommaSeparatedFields(params.get(CUSTOM_2));
+      query.custom2In(custom2);
+      params.remove(CUSTOM_2);
+    }
+    if (params.containsKey(CUSTOM_2_LIKE)) {
+      query.custom2Like(LIKE + params.get(CUSTOM_2_LIKE).get(0) + LIKE);
+      params.remove(CUSTOM_2_LIKE);
+    }
+    if (params.containsKey(CUSTOM_3)) {
+      String[] custom3 = extractCommaSeparatedFields(params.get(CUSTOM_3));
+      query.custom3In(custom3);
+      params.remove(CUSTOM_3);
+    }
+    if (params.containsKey(CUSTOM_3_LIKE)) {
+      query.custom3Like(LIKE + params.get(CUSTOM_3_LIKE).get(0) + LIKE);
+      params.remove(CUSTOM_3_LIKE);
+    }
+    if (params.containsKey(CUSTOM_4)) {
+      String[] custom4 = extractCommaSeparatedFields(params.get(CUSTOM_4));
+      query.custom4In(custom4);
+      params.remove(CUSTOM_4);
+    }
+    if (params.containsKey(CUSTOM_4_LIKE)) {
+      query.custom4Like(LIKE + params.get(CUSTOM_4_LIKE).get(0) + LIKE);
+      params.remove(CUSTOM_4_LIKE);
+    }
+    if (LOGGER.isDebugEnabled()) {
+      LOGGER.debug("Exit from applyFilterParams(), returning {}", query);
+    }
+
+    return query;
+  }
+
+  private TimeInterval getTimeIntervalOf(String[] created) {
+    LocalDate begin;
+    LocalDate end;
+    try {
+      begin = LocalDate.parse(created[0]);
+    } catch (Exception e) {
+      throw new IllegalArgumentException(
+          "Cannot parse String '"
+              + created[0]
+              + "'. Expected a String of the Format 'yyyy-MM-dd'.");
+    }
+    if (created.length < 2) {
+      end = begin.plusDays(1);
+    } else {
+      end = LocalDate.parse(created[1]);
+    }
+    Instant beginInst = begin.atStartOfDay(ZoneId.systemDefault()).toInstant();
+    Instant endInst = end.atStartOfDay(ZoneId.systemDefault()).toInstant();
+    TimeInterval timeInterval = new TimeInterval(beginInst, endInst);
+    return timeInterval;
+  }
 }

history/taskana-simplehistory-rest-spring/src/main/java/pro/taskana/rest/simplehistory/TaskHistoryRestConfiguration.java

@@ -7,17 +7,14 @@ import org.springframework.transaction.annotation.EnableTransactionManagement;
 
 import pro.taskana.simplehistory.impl.SimpleHistoryServiceImpl;
 
-/**
- * Configuration for Taskana history REST service.
- */
+/** Configuration for Taskana history REST service. */
 @Configuration
 @ComponentScan(basePackages = {"pro.taskana.rest", "pro.taskana.rest.simplehistory"})
 @EnableTransactionManagement
 public class TaskHistoryRestConfiguration {
 
-    @Bean
-    public SimpleHistoryServiceImpl getSimpleHistoryService() {
-        return new SimpleHistoryServiceImpl();
-    }
-
+  @Bean
+  public SimpleHistoryServiceImpl getSimpleHistoryService() {
+    return new SimpleHistoryServiceImpl();
+  }
 }

history/taskana-simplehistory-rest-spring/src/main/java/pro/taskana/rest/simplehistory/sampledata/SampleDataGenerator.java

@@ -8,76 +8,75 @@ import java.io.StringWriter;
 import java.nio.charset.StandardCharsets;
 import java.sql.Connection;
 import java.sql.SQLException;
-
 import javax.sql.DataSource;
-
 import org.apache.ibatis.jdbc.ScriptRunner;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
 import pro.taskana.configuration.DB;
 
-/**
- * This class generates sample data for manual testing purposes.
- */
+/** This class generates sample data for manual testing purposes. */
 public class SampleDataGenerator {
 
-    private static final Logger LOGGER = LoggerFactory.getLogger(SampleDataGenerator.class);
-    private static final String TEST_DATA = "/sql.sample-data";
-    private static final String CLEAR = TEST_DATA + "/clear-db.sql";
-    private static final String HISTORY_EVENT = TEST_DATA + "/history-event.sql";
-    private ScriptRunner runner;
+  private static final Logger LOGGER = LoggerFactory.getLogger(SampleDataGenerator.class);
+  private static final String TEST_DATA = "/sql.sample-data";
+  private static final String CLEAR = TEST_DATA + "/clear-db.sql";
+  private static final String HISTORY_EVENT = TEST_DATA + "/history-event.sql";
+  DataSource dataSource;
+  String dbProductName;
+  private ScriptRunner runner;
 
-    DataSource dataSource;
-    String dbProductName;
+  public SampleDataGenerator(DataSource dataSource) throws SQLException {
+    try (Connection connection = dataSource.getConnection()) {
+      dbProductName = connection.getMetaData().getDatabaseProductName();
+      if (LOGGER.isTraceEnabled()) {
+        String msg = connection.getMetaData().toString();
+        LOGGER.trace(msg);
+      }
+    }
+    this.dataSource = dataSource;
 
-    public SampleDataGenerator(DataSource dataSource) throws SQLException {
-        try (Connection connection = dataSource.getConnection()) {
-            dbProductName = connection.getMetaData().getDatabaseProductName();
-            if (LOGGER.isTraceEnabled()) {
-                String msg = connection.getMetaData().toString();
-                LOGGER.trace(msg);
-            }
-        }
-        this.dataSource = dataSource;
+    runner = new ScriptRunner(dataSource.getConnection());
+  }
 
-        runner = new ScriptRunner(dataSource.getConnection());
+  public void generateSampleData(String schemaName) {
+    StringWriter outWriter = new StringWriter();
+    PrintWriter logWriter = new PrintWriter(outWriter);
+
+    StringWriter errorWriter = new StringWriter();
+    PrintWriter errorLogWriter = new PrintWriter(errorWriter);
+    try {
+      runner.runScript(selectSchemaScript(dbProductName, schemaName));
+      runner.setStopOnError(false);
+      runner.runScript(
+          new BufferedReader(
+              new InputStreamReader(
+                  this.getClass().getResourceAsStream(CLEAR), StandardCharsets.UTF_8)));
+    } catch (Exception e) {
+      LOGGER.error("caught Exception {}", e, e);
     }
 
-    public void generateSampleData(String schemaName) {
-        StringWriter outWriter = new StringWriter();
-        PrintWriter logWriter = new PrintWriter(outWriter);
+    runner.setStopOnError(true);
+    runner.setLogWriter(logWriter);
+    runner.setErrorLogWriter(errorLogWriter);
 
-        StringWriter errorWriter = new StringWriter();
-        PrintWriter errorLogWriter = new PrintWriter(errorWriter);
-        try {
-            runner.runScript(selectSchemaScript(dbProductName, schemaName));
-            runner.setStopOnError(false);
-            runner.runScript(new BufferedReader(
-                new InputStreamReader(this.getClass().getResourceAsStream(CLEAR), StandardCharsets.UTF_8)));
-        } catch (Exception e) {
-            LOGGER.error("caught Exception {}", e, e);
-        }
+    runner.runScript(
+        new BufferedReader(
+            new InputStreamReader(
+                this.getClass().getResourceAsStream(HISTORY_EVENT), StandardCharsets.UTF_8)));
 
-        runner.setStopOnError(true);
-        runner.setLogWriter(logWriter);
-        runner.setErrorLogWriter(errorLogWriter);
+    runner.closeConnection();
 
-        runner.runScript(new BufferedReader(
-            new InputStreamReader(this.getClass().getResourceAsStream(HISTORY_EVENT), StandardCharsets.UTF_8)));
-
-        runner.closeConnection();
-
-        LOGGER.trace(outWriter.toString());
-        if (!errorWriter.toString().trim().isEmpty()) {
-            LOGGER.error(errorWriter.toString());
-        }
+    LOGGER.trace(outWriter.toString());
+    if (!errorWriter.toString().trim().isEmpty()) {
+      LOGGER.error(errorWriter.toString());
     }
+  }
 
-    private StringReader selectSchemaScript(String dbProductName, String schemaName) {
-        return new StringReader(DB.isPostgreSQL(dbProductName)
+  private StringReader selectSchemaScript(String dbProductName, String schemaName) {
+    return new StringReader(
+        DB.isPostgreSQL(dbProductName)
             ? "SET search_path TO " + schemaName + ";"
             : "SET SCHEMA " + schemaName + ";");
-    }
-
+  }
 }

history/taskana-simplehistory-spring-test/src/main/java/pro/taskana/rest/ExampleDocumentationApplication.java

@@ -1,9 +1,7 @@
 package pro.taskana.rest;
 
 import java.sql.SQLException;
-
 import javax.sql.DataSource;
-
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.beans.factory.annotation.Value;
 import org.springframework.boot.SpringApplication;
@@ -21,48 +19,47 @@ import org.springframework.transaction.PlatformTransactionManager;
 import pro.taskana.rest.simplehistory.TaskHistoryRestConfiguration;
 import pro.taskana.rest.simplehistory.sampledata.SampleDataGenerator;
 
-/**
- * Example Application to create the documentation.
- */
+/** Example Application to create the documentation. */
 @SpringBootApplication
 @ComponentScan(basePackages = "pro.taskana.rest.simplehistory")
 @Import({TaskHistoryRestConfiguration.class})
 public class ExampleDocumentationApplication {
 
-    @Value("${taskana.schemaName:TASKANA}")
-    private String schemaName;
+  @Value("${taskana.schemaName:TASKANA}")
+  private String schemaName;
 
-    @Autowired
-    private SampleDataGenerator sampleDataGenerator;
+  @Autowired private SampleDataGenerator sampleDataGenerator;
 
-    public static void main(String[] args) {
-        SpringApplication.run(ExampleDocumentationApplication.class, args);
-    }
+  public static void main(String[] args) {
+    SpringApplication.run(ExampleDocumentationApplication.class, args);
+  }
 
-    @Bean
-    @Primary
-    @ConfigurationProperties(prefix = "datasource")
-    public DataSourceProperties dataSourceProperties() {
-        DataSourceProperties props = new DataSourceProperties();
-        props.setUrl("jdbc:h2:mem:taskana;IGNORECASE=TRUE;LOCK_MODE=0;INIT=CREATE SCHEMA IF NOT EXISTS " + schemaName);
-        return props;
-    }
+  @Bean
+  @Primary
+  @ConfigurationProperties(prefix = "datasource")
+  public DataSourceProperties dataSourceProperties() {
+    DataSourceProperties props = new DataSourceProperties();
+    props.setUrl(
+        "jdbc:h2:mem:taskana;IGNORECASE=TRUE;LOCK_MODE=0;INIT=CREATE SCHEMA IF NOT EXISTS "
+            + schemaName);
+    return props;
+  }
 
-    @Bean
-    public DataSource dataSource(DataSourceProperties properties) {
-        return properties.initializeDataSourceBuilder().build();
-    }
+  @Bean
+  public DataSource dataSource(DataSourceProperties properties) {
+    return properties.initializeDataSourceBuilder().build();
+  }
 
-    @Bean
-    public PlatformTransactionManager txManager(DataSource dataSource) {
-        return new DataSourceTransactionManager(dataSource);
-    }
+  @Bean
+  public PlatformTransactionManager txManager(DataSource dataSource) {
+    return new DataSourceTransactionManager(dataSource);
+  }
 
-    @Bean
-    @DependsOn("getTaskanaEngine") // generate sample data after schema was inserted
-    public SampleDataGenerator generateSampleData(DataSource dataSource) throws SQLException {
-        sampleDataGenerator = new SampleDataGenerator(dataSource);
-        sampleDataGenerator.generateSampleData(schemaName);
-        return sampleDataGenerator;
-    }
+  @Bean
+  @DependsOn("getTaskanaEngine") // generate sample data after schema was inserted
+  public SampleDataGenerator generateSampleData(DataSource dataSource) throws SQLException {
+    sampleDataGenerator = new SampleDataGenerator(dataSource);
+    sampleDataGenerator.generateSampleData(schemaName);
+    return sampleDataGenerator;
+  }
 }

history/taskana-simplehistory-spring-test/src/test/java/pro/taskana/TaskHistoryEventControllerIntTest.java

@@ -5,12 +5,12 @@ import static org.junit.Assert.assertNotNull;
 import static org.junit.Assert.assertTrue;
 import static org.junit.Assert.fail;
 
+import com.fasterxml.jackson.databind.DeserializationFeature;
+import com.fasterxml.jackson.databind.ObjectMapper;
 import java.sql.SQLException;
 import java.time.LocalDateTime;
 import java.util.Collections;
-
 import javax.sql.DataSource;
-
 import org.junit.Before;
 import org.junit.Test;
 import org.junit.runner.RunWith;
@@ -35,171 +35,176 @@ import org.springframework.test.context.junit4.SpringRunner;
 import org.springframework.web.client.HttpClientErrorException;
 import org.springframework.web.client.RestTemplate;
 
-import com.fasterxml.jackson.databind.DeserializationFeature;
-import com.fasterxml.jackson.databind.ObjectMapper;
-
 import pro.taskana.exceptions.SystemException;
 import pro.taskana.rest.resource.TaskHistoryEventListResource;
 import pro.taskana.rest.simplehistory.TaskHistoryRestConfiguration;
 import pro.taskana.rest.simplehistory.sampledata.SampleDataGenerator;
 
-/**
- * Controller for integration test.
- */
+/** Controller for integration test. */
 @EnableAutoConfiguration
 @RunWith(SpringRunner.class)
-@SpringBootTest(classes = {TaskHistoryRestConfiguration.class},
+@SpringBootTest(
+    classes = {TaskHistoryRestConfiguration.class},
     webEnvironment = SpringBootTest.WebEnvironment.RANDOM_PORT)
 public class TaskHistoryEventControllerIntTest {
 
-    @Value("${taskana.schemaName:TASKANA}")
-    public String schemaName;
+  private static final Logger LOGGER =
+      LoggerFactory.getLogger(TaskHistoryEventControllerIntTest.class);
+  @Value("${taskana.schemaName:TASKANA}")
+  public String schemaName;
+  String server = "http://127.0.0.1:";
 
-    private static final Logger LOGGER = LoggerFactory.getLogger(TaskHistoryEventControllerIntTest.class);
+  RestTemplate template;
 
-    String server = "http://127.0.0.1:";
+  HttpEntity<String> request;
 
-    RestTemplate template;
+  @LocalServerPort int port;
 
-    HttpEntity<String> request;
+  @Autowired private DataSource dataSource;
 
-    @LocalServerPort
-    int port;
-
-    @Autowired
-    private DataSource dataSource;
-
-    @Before
-    public void before() {
-        template = getRestTemplate();
-        SampleDataGenerator sampleDataGenerator;
-        try {
-            sampleDataGenerator = new SampleDataGenerator(dataSource);
-            sampleDataGenerator.generateSampleData(schemaName);
-        } catch (SQLException e) {
-            throw new SystemException("tried to reset DB and caught Exception " + e, e);
-        }
+  @Before
+  public void before() {
+    template = getRestTemplate();
+    SampleDataGenerator sampleDataGenerator;
+    try {
+      sampleDataGenerator = new SampleDataGenerator(dataSource);
+      sampleDataGenerator.generateSampleData(schemaName);
+    } catch (SQLException e) {
+      throw new SystemException("tried to reset DB and caught Exception " + e, e);
     }
+  }
 
-    @Test
-    public void testGetAllHistoryEvent() {
-        ResponseEntity<TaskHistoryEventListResource> response = template.exchange(
-            server + port + "/api/v1/task-history-event", HttpMethod.GET, request,
-            new ParameterizedTypeReference<TaskHistoryEventListResource>() {
-            });
-        assertNotNull(response.getBody().getLink(Link.REL_SELF));
-        assertEquals(50, response.getBody().getContent().size());
-    }
+  @Test
+  public void testGetAllHistoryEvent() {
+    ResponseEntity<TaskHistoryEventListResource> response =
+        template.exchange(
+            server + port + "/api/v1/task-history-event",
+            HttpMethod.GET,
+            request,
+            new ParameterizedTypeReference<TaskHistoryEventListResource>() {});
+    assertNotNull(response.getBody().getLink(Link.REL_SELF));
+    assertEquals(50, response.getBody().getContent().size());
+  }
 
-    @Test
-    public void testGetAllHistoryEventDescendingOrder() {
-        String parameters = "/api/v1/task-history-event?sort-by=business-process-id&order=desc&page-size=3&page=1";
-        ResponseEntity<TaskHistoryEventListResource> response = template.exchange(
-            server + port + parameters, HttpMethod.GET, request,
-            new ParameterizedTypeReference<TaskHistoryEventListResource>() {
-            });
-        assertNotNull(response.getBody().getLink(Link.REL_SELF));
-        assertEquals(3, response.getBody().getContent().size());
-        assertTrue(response.getBody()
-            .getLink(Link.REL_SELF)
-            .getHref()
-            .endsWith(parameters));
-    }
+  @Test
+  public void testGetAllHistoryEventDescendingOrder() {
+    String parameters =
+        "/api/v1/task-history-event?sort-by=business-process-id&order=desc&page-size=3&page=1";
+    ResponseEntity<TaskHistoryEventListResource> response =
+        template.exchange(
+            server + port + parameters,
+            HttpMethod.GET,
+            request,
+            new ParameterizedTypeReference<TaskHistoryEventListResource>() {});
+    assertNotNull(response.getBody().getLink(Link.REL_SELF));
+    assertEquals(3, response.getBody().getContent().size());
+    assertTrue(response.getBody().getLink(Link.REL_SELF).getHref().endsWith(parameters));
+  }
 
-    @Test
-    public void testGetSpecificTaskHistoryEvent() {
-        ResponseEntity<TaskHistoryEventListResource> response = template.exchange(
-            server + port
+  @Test
+  public void testGetSpecificTaskHistoryEvent() {
+    ResponseEntity<TaskHistoryEventListResource> response =
+        template.exchange(
+            server
+                + port
                 + "/api/v1/task-history-event?business-process-id=BPI:01&sort-by=business-process-id&order=asc&page-size=6&page=1",
-            HttpMethod.GET, request,
-            new ParameterizedTypeReference<TaskHistoryEventListResource>() {
+            HttpMethod.GET,
+            request,
+            new ParameterizedTypeReference<TaskHistoryEventListResource>() {});
 
-            });
-        assertNotNull(response.getBody().getLink(Link.REL_SELF));
-        assertNotNull(response.getBody().getLinks());
-        assertNotNull(response.getBody().getMetadata());
-        assertEquals(1, response.getBody().getContent().size());
+    assertNotNull(response.getBody().getLink(Link.REL_SELF));
+    assertNotNull(response.getBody().getLinks());
+    assertNotNull(response.getBody().getMetadata());
+    assertEquals(1, response.getBody().getContent().size());
+  }
+
+  @Test
+  public void testThrowsExceptionIfInvalidFilterIsUsed() {
+    try {
+      template.exchange(
+          server + port + "/api/v1/task-history-event?invalid=BPI:01",
+          HttpMethod.GET,
+          request,
+          new ParameterizedTypeReference<TaskHistoryEventListResource>() {});
+      fail();
+    } catch (HttpClientErrorException e) {
+      assertEquals(HttpStatus.BAD_REQUEST, e.getStatusCode());
+      assertTrue(e.getResponseBodyAsString().contains("[invalid]"));
+    }
+  }
+
+  @Test
+  public void testGetHistoryEventOfDate() {
+    String currentTime = LocalDateTime.now().toString();
+
+    try {
+      template.exchange(
+          server + port + "/api/v1/task-history-event?created=" + currentTime,
+          HttpMethod.GET,
+          request,
+          new ParameterizedTypeReference<TaskHistoryEventListResource>() {});
+      fail();
+    } catch (HttpClientErrorException e) {
+      assertEquals(HttpStatus.BAD_REQUEST, e.getStatusCode());
+      assertTrue(e.getResponseBodyAsString().contains(currentTime));
     }
 
-    @Test
-    public void testThrowsExceptionIfInvalidFilterIsUsed() {
-        try {
-            template.exchange(
-                server + port + "/api/v1/task-history-event?invalid=BPI:01", HttpMethod.GET, request,
-                new ParameterizedTypeReference<TaskHistoryEventListResource>() {
-                });
-            fail();
-        } catch (HttpClientErrorException e) {
-            assertEquals(HttpStatus.BAD_REQUEST, e.getStatusCode());
-            assertTrue(e.getResponseBodyAsString().contains("[invalid]"));
-        }
-    }
+    // correct Format 'yyyy-MM-dd'
+    currentTime = currentTime.substring(0, 10);
+    ResponseEntity<TaskHistoryEventListResource> response =
+        template.exchange(
+            server + port + "/api/v1/task-history-event?created=" + currentTime,
+            HttpMethod.GET,
+            request,
+            new ParameterizedTypeReference<TaskHistoryEventListResource>() {});
+    assertNotNull(response.getBody().getLink(Link.REL_SELF));
+    assertEquals(25, response.getBody().getContent().size());
+  }
 
-    @Test
-    public void testGetHistoryEventOfDate() {
-        String currentTime = LocalDateTime.now().toString();
+  @Test
+  public void testGetSecondPageSortedByKey() {
+    String parameters =
+        "/api/v1/task-history-event?sort-by=workbasket-key&order=desc&page=2&page-size=2";
+    ResponseEntity<TaskHistoryEventListResource> response =
+        template.exchange(
+            server + port + parameters,
+            HttpMethod.GET,
+            request,
+            new ParameterizedTypeReference<TaskHistoryEventListResource>() {});
 
-        try {
-            template.exchange(
-                server + port + "/api/v1/task-history-event?created=" + currentTime, HttpMethod.GET, request,
-                new ParameterizedTypeReference<TaskHistoryEventListResource>() {
-                });
-            fail();
-        } catch (HttpClientErrorException e) {
-            assertEquals(HttpStatus.BAD_REQUEST, e.getStatusCode());
-            assertTrue(e.getResponseBodyAsString().contains(currentTime));
-        }
-
-        // correct Format 'yyyy-MM-dd'
-        currentTime = currentTime.substring(0, 10);
-        ResponseEntity<TaskHistoryEventListResource> response = template.exchange(
-            server + port + "/api/v1/task-history-event?created=" + currentTime, HttpMethod.GET, request,
-            new ParameterizedTypeReference<TaskHistoryEventListResource>() {
-            });
-        assertNotNull(response.getBody().getLink(Link.REL_SELF));
-        assertEquals(25, response.getBody().getContent().size());
-    }
-
-    @Test
-    public void testGetSecondPageSortedByKey() {
-        String parameters = "/api/v1/task-history-event?sort-by=workbasket-key&order=desc&page=2&page-size=2";
-        ResponseEntity<TaskHistoryEventListResource> response = template.exchange(
-            server + port + parameters, HttpMethod.GET, request,
-            new ParameterizedTypeReference<TaskHistoryEventListResource>() {
-
-            });
-        assertEquals(2, response.getBody().getContent().size());
-        assertEquals("WBI:100000000000000000000000000000000002",
-            response.getBody().getContent().iterator().next().getWorkbasketKey());
-        assertNotNull(response.getBody().getLink(Link.REL_SELF));
-        assertTrue(response.getBody()
-            .getLink(Link.REL_SELF)
-            .getHref()
-            .endsWith(parameters));
-        assertNotNull(response.getBody().getLink("allTaskHistoryEvent"));
-        assertTrue(response.getBody()
+    assertEquals(2, response.getBody().getContent().size());
+    assertEquals(
+        "WBI:100000000000000000000000000000000002",
+        response.getBody().getContent().iterator().next().getWorkbasketKey());
+    assertNotNull(response.getBody().getLink(Link.REL_SELF));
+    assertTrue(response.getBody().getLink(Link.REL_SELF).getHref().endsWith(parameters));
+    assertNotNull(response.getBody().getLink("allTaskHistoryEvent"));
+    assertTrue(
+        response
+            .getBody()
             .getLink("allTaskHistoryEvent")
             .getHref()
             .endsWith("/api/v1/task-history-event"));
-        assertNotNull(response.getBody().getLink(Link.REL_FIRST));
-        assertNotNull(response.getBody().getLink(Link.REL_LAST));
-    }
+    assertNotNull(response.getBody().getLink(Link.REL_FIRST));
+    assertNotNull(response.getBody().getLink(Link.REL_LAST));
+  }
 
-    /**
-     * Return a REST template which is capable of dealing with responses in HAL format.
-     *
-     * @return RestTemplate
-     */
-    private RestTemplate getRestTemplate() {
-        ObjectMapper mapper = new ObjectMapper();
-        mapper.configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, false);
-        mapper.registerModule(new Jackson2HalModule());
+  /**
+   * Return a REST template which is capable of dealing with responses in HAL format.
+   *
+   * @return RestTemplate
+   */
+  private RestTemplate getRestTemplate() {
+    ObjectMapper mapper = new ObjectMapper();
+    mapper.configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, false);
+    mapper.registerModule(new Jackson2HalModule());
 
-        MappingJackson2HttpMessageConverter converter = new MappingJackson2HttpMessageConverter();
-        converter.setSupportedMediaTypes(MediaType.parseMediaTypes("application/hal+json"));
-        converter.setObjectMapper(mapper);
+    MappingJackson2HttpMessageConverter converter = new MappingJackson2HttpMessageConverter();
+    converter.setSupportedMediaTypes(MediaType.parseMediaTypes("application/hal+json"));
+    converter.setObjectMapper(mapper);
 
-        RestTemplate template = new RestTemplate(Collections.<HttpMessageConverter<?>> singletonList(converter));
-        return template;
-    }
+    RestTemplate template =
+        new RestTemplate(Collections.<HttpMessageConverter<?>>singletonList(converter));
+    return template;
+  }
 }

history/taskana-simplehistory-spring-test/src/test/java/pro/taskana/doc/api/TaskHistoryEventControllerRestDocumentation.java

@@ -10,7 +10,6 @@ import static org.springframework.restdocs.payload.PayloadDocumentation.response
 import static org.springframework.restdocs.payload.PayloadDocumentation.subsectionWithPath;
 
 import java.util.HashMap;
-
 import org.junit.Before;
 import org.junit.Rule;
 import org.junit.Test;
@@ -30,168 +29,177 @@ import org.springframework.web.context.WebApplicationContext;
 
 import pro.taskana.rest.simplehistory.TaskHistoryRestConfiguration;
 
-/**
- * Generate documentation for the history event controller.
- */
+/** Generate documentation for the history event controller. */
 @RunWith(SpringRunner.class)
-@SpringBootTest(classes = TaskHistoryRestConfiguration.class,
+@SpringBootTest(
+    classes = TaskHistoryRestConfiguration.class,
     webEnvironment = SpringBootTest.WebEnvironment.RANDOM_PORT)
 public class TaskHistoryEventControllerRestDocumentation {
 
-    @LocalServerPort
-    int port;
+  @Rule public JUnitRestDocumentation restDocumentation = new JUnitRestDocumentation();
+  @LocalServerPort int port;
+  @Autowired private WebApplicationContext context;
 
-    @Rule
-    public JUnitRestDocumentation restDocumentation = new JUnitRestDocumentation();
+  private MockMvc mockMvc;
 
-    @Autowired
-    private WebApplicationContext context;
+  private HashMap<String, String> taskHistoryEventFieldDescriptionsMap =
+      new HashMap<String, String>();
 
-    private MockMvc mockMvc;
+  private FieldDescriptor[] allTaskHistoryEventFieldDescriptors;
 
-    private HashMap<String, String> taskHistoryEventFieldDescriptionsMap = new HashMap<String, String>();
+  private FieldDescriptor[] taskHistoryEventFieldDescriptors;
 
-    private FieldDescriptor[] allTaskHistoryEventFieldDescriptors;
+  @Before
+  public void setUp() {
+    document("{methodName}", preprocessRequest(prettyPrint()), preprocessResponse(prettyPrint()));
 
-    private FieldDescriptor[] taskHistoryEventFieldDescriptors;
-
-    @Before
-    public void setUp() {
-        document("{methodName}",
-            preprocessRequest(prettyPrint()),
-            preprocessResponse(prettyPrint()));
-
-        this.mockMvc = MockMvcBuilders.webAppContextSetup(this.context)
-            .apply(documentationConfiguration(this.restDocumentation)
-                .operationPreprocessors()
-                .withResponseDefaults(prettyPrint())
-                .withRequestDefaults(prettyPrint()))
+    this.mockMvc =
+        MockMvcBuilders.webAppContextSetup(this.context)
+            .apply(
+                documentationConfiguration(this.restDocumentation)
+                    .operationPreprocessors()
+                    .withResponseDefaults(prettyPrint())
+                    .withRequestDefaults(prettyPrint()))
             .build();
 
-        taskHistoryEventFieldDescriptionsMap.put("taskHistoryId", "Unique ID");
-        taskHistoryEventFieldDescriptionsMap.put("businessProcessId", "The id of the business process");
-        taskHistoryEventFieldDescriptionsMap.put("parentBusinessProcessId",
-            "The id of the parent business process");
-        taskHistoryEventFieldDescriptionsMap.put("taskId", "The id of the task");
-        taskHistoryEventFieldDescriptionsMap.put("eventType", "The type of the event");
-        taskHistoryEventFieldDescriptionsMap.put("created", "The time was created");
-        taskHistoryEventFieldDescriptionsMap.put("userId", "The id of the user");
-        taskHistoryEventFieldDescriptionsMap.put("domain", "Domain");
-        taskHistoryEventFieldDescriptionsMap.put("workbasketKey", "The key of workbasket");
-        taskHistoryEventFieldDescriptionsMap.put("porCompany", "");
-        taskHistoryEventFieldDescriptionsMap.put("porSystem", "");
-        taskHistoryEventFieldDescriptionsMap.put("porInstance", "");
-        taskHistoryEventFieldDescriptionsMap.put("porValue", "");
-        taskHistoryEventFieldDescriptionsMap.put("porType", "");
-        taskHistoryEventFieldDescriptionsMap.put("taskClassificationKey", "The key of classification task");
-        taskHistoryEventFieldDescriptionsMap.put("taskClassificationCategory",
-            "The category of classification");
-        taskHistoryEventFieldDescriptionsMap.put("attachmentClassificationKey", "");
-        taskHistoryEventFieldDescriptionsMap.put("comment", "");
-        taskHistoryEventFieldDescriptionsMap.put("oldValue", "The old value");
-        taskHistoryEventFieldDescriptionsMap.put("newValue", "The new value");
-        taskHistoryEventFieldDescriptionsMap.put("custom1", "A custom property with name \"1\"");
-        taskHistoryEventFieldDescriptionsMap.put("custom2", "A custom property with name \"2\"");
-        taskHistoryEventFieldDescriptionsMap.put("custom3", "A custom property with name \"3\"");
-        taskHistoryEventFieldDescriptionsMap.put("custom4", "A custom property with name \"4\"");
-        taskHistoryEventFieldDescriptionsMap.put("oldData", "The old data");
-        taskHistoryEventFieldDescriptionsMap.put("newData", "The new data");
-        taskHistoryEventFieldDescriptionsMap.put("_links.self.href", "The links of this task history event");
-        taskHistoryEventFieldDescriptionsMap.put("_links.allTaskHistoryEvent.href", "Link to all task history event");
-        taskHistoryEventFieldDescriptionsMap.put("_links.first.href", "Link to the first result");
-        taskHistoryEventFieldDescriptionsMap.put("_links.last.href", "Link to the last result");
+    taskHistoryEventFieldDescriptionsMap.put("taskHistoryId", "Unique ID");
+    taskHistoryEventFieldDescriptionsMap.put("businessProcessId", "The id of the business process");
+    taskHistoryEventFieldDescriptionsMap.put(
+        "parentBusinessProcessId", "The id of the parent business process");
+    taskHistoryEventFieldDescriptionsMap.put("taskId", "The id of the task");
+    taskHistoryEventFieldDescriptionsMap.put("eventType", "The type of the event");
+    taskHistoryEventFieldDescriptionsMap.put("created", "The time was created");
+    taskHistoryEventFieldDescriptionsMap.put("userId", "The id of the user");
+    taskHistoryEventFieldDescriptionsMap.put("domain", "Domain");
+    taskHistoryEventFieldDescriptionsMap.put("workbasketKey", "The key of workbasket");
+    taskHistoryEventFieldDescriptionsMap.put("porCompany", "");
+    taskHistoryEventFieldDescriptionsMap.put("porSystem", "");
+    taskHistoryEventFieldDescriptionsMap.put("porInstance", "");
+    taskHistoryEventFieldDescriptionsMap.put("porValue", "");
+    taskHistoryEventFieldDescriptionsMap.put("porType", "");
+    taskHistoryEventFieldDescriptionsMap.put(
+        "taskClassificationKey", "The key of classification task");
+    taskHistoryEventFieldDescriptionsMap.put(
+        "taskClassificationCategory", "The category of classification");
+    taskHistoryEventFieldDescriptionsMap.put("attachmentClassificationKey", "");
+    taskHistoryEventFieldDescriptionsMap.put("comment", "");
+    taskHistoryEventFieldDescriptionsMap.put("oldValue", "The old value");
+    taskHistoryEventFieldDescriptionsMap.put("newValue", "The new value");
+    taskHistoryEventFieldDescriptionsMap.put("custom1", "A custom property with name \"1\"");
+    taskHistoryEventFieldDescriptionsMap.put("custom2", "A custom property with name \"2\"");
+    taskHistoryEventFieldDescriptionsMap.put("custom3", "A custom property with name \"3\"");
+    taskHistoryEventFieldDescriptionsMap.put("custom4", "A custom property with name \"4\"");
+    taskHistoryEventFieldDescriptionsMap.put("oldData", "The old data");
+    taskHistoryEventFieldDescriptionsMap.put("newData", "The new data");
+    taskHistoryEventFieldDescriptionsMap.put(
+        "_links.self.href", "The links of this task history event");
+    taskHistoryEventFieldDescriptionsMap.put(
+        "_links.allTaskHistoryEvent.href", "Link to all task history event");
+    taskHistoryEventFieldDescriptionsMap.put("_links.first.href", "Link to the first result");
+    taskHistoryEventFieldDescriptionsMap.put("_links.last.href", "Link to the last result");
 
-        allTaskHistoryEventFieldDescriptors = new FieldDescriptor[] {
-            subsectionWithPath("taskHistoryEvents").description("An array of Task history event"),
-            fieldWithPath("_links.allTaskHistoryEvent.href").ignored(),
-            fieldWithPath("_links.self.href").ignored(),
-            fieldWithPath("_links.first.href").ignored(),
-            fieldWithPath("_links.last.href").ignored(),
-            fieldWithPath("_links.next.href").ignored(),
-            fieldWithPath("page.size").ignored(),
-            fieldWithPath("page.totalElements").ignored(),
-            fieldWithPath("page.totalPages").ignored(),
-            fieldWithPath("page.number").ignored()
+    allTaskHistoryEventFieldDescriptors =
+        new FieldDescriptor[] {
+          subsectionWithPath("taskHistoryEvents").description("An array of Task history event"),
+          fieldWithPath("_links.allTaskHistoryEvent.href").ignored(),
+          fieldWithPath("_links.self.href").ignored(),
+          fieldWithPath("_links.first.href").ignored(),
+          fieldWithPath("_links.last.href").ignored(),
+          fieldWithPath("_links.next.href").ignored(),
+          fieldWithPath("page.size").ignored(),
+          fieldWithPath("page.totalElements").ignored(),
+          fieldWithPath("page.totalPages").ignored(),
+          fieldWithPath("page.number").ignored()
         };
 
-        taskHistoryEventFieldDescriptors = new FieldDescriptor[] {
-            fieldWithPath("taskHistoryEvents[].taskHistoryId").description(
-                taskHistoryEventFieldDescriptionsMap.get("taskHistoryId")),
-            fieldWithPath("taskHistoryEvents[].businessProcessId").description(
-                taskHistoryEventFieldDescriptionsMap.get("businessProcessId")),
-            fieldWithPath("taskHistoryEvents[].parentBusinessProcessId").description(
-                taskHistoryEventFieldDescriptionsMap.get("parentBusinessProcessId")),
-            fieldWithPath("taskHistoryEvents[].taskId").description(
-                taskHistoryEventFieldDescriptionsMap.get("taskId")),
-            fieldWithPath("taskHistoryEvents[].eventType").description(
-                taskHistoryEventFieldDescriptionsMap.get("eventType")),
-            fieldWithPath("taskHistoryEvents[].created").description(
-                taskHistoryEventFieldDescriptionsMap.get("created")),
-            fieldWithPath("taskHistoryEvents[].userId").description(
-                taskHistoryEventFieldDescriptionsMap.get("userId")),
-            fieldWithPath("taskHistoryEvents[].domain").description(
-                taskHistoryEventFieldDescriptionsMap.get("domain")),
-            fieldWithPath("taskHistoryEvents[].workbasketKey").description(
-                taskHistoryEventFieldDescriptionsMap.get("workbasketKey")),
-            fieldWithPath("taskHistoryEvents[].porCompany").description(
-                taskHistoryEventFieldDescriptionsMap.get("porCompany")),
-            fieldWithPath("taskHistoryEvents[].porSystem").description(
-                taskHistoryEventFieldDescriptionsMap.get("porSystem")),
-            fieldWithPath("taskHistoryEvents[].porInstance").description(
-                taskHistoryEventFieldDescriptionsMap.get("porInstance")),
-            fieldWithPath("taskHistoryEvents[].porValue").description(
-                taskHistoryEventFieldDescriptionsMap.get("porValue")),
-            fieldWithPath("taskHistoryEvents[].porType").description(
-                taskHistoryEventFieldDescriptionsMap.get("porType")),
-            fieldWithPath("taskHistoryEvents[].taskClassificationKey").description(
-                taskHistoryEventFieldDescriptionsMap.get("taskClassificationKey")),
-            fieldWithPath("taskHistoryEvents[].taskClassificationCategory").description(
-                taskHistoryEventFieldDescriptionsMap.get("taskClassificationCategory")),
-            fieldWithPath("taskHistoryEvents[].attachmentClassificationKey").description(
-                taskHistoryEventFieldDescriptionsMap.get("attachmentClassificationKey")),
-            fieldWithPath("taskHistoryEvents[].comment").description(
-                taskHistoryEventFieldDescriptionsMap.get("comment")),
-            fieldWithPath("taskHistoryEvents[].oldValue").description(
-                taskHistoryEventFieldDescriptionsMap.get("oldValue")),
-            fieldWithPath("taskHistoryEvents[].newValue").description(
-                taskHistoryEventFieldDescriptionsMap.get("newValue")),
-            fieldWithPath("taskHistoryEvents[].custom1").description(
-                taskHistoryEventFieldDescriptionsMap.get("custom1")),
-            fieldWithPath("taskHistoryEvents[].custom2").description(
-                taskHistoryEventFieldDescriptionsMap.get("custom2")),
-            fieldWithPath("taskHistoryEvents[].custom3").description(
-                taskHistoryEventFieldDescriptionsMap.get("custom3")),
-            fieldWithPath("taskHistoryEvents[].custom4").description(
-                taskHistoryEventFieldDescriptionsMap.get("custom4")),
-            fieldWithPath("taskHistoryEvents[].oldData").description(
-                taskHistoryEventFieldDescriptionsMap.get("oldData")),
-            fieldWithPath("taskHistoryEvents[].newData").description(
-                taskHistoryEventFieldDescriptionsMap.get("newData")),
-            fieldWithPath("_links.self.href").ignored(),
-            fieldWithPath("page").ignored()
+    taskHistoryEventFieldDescriptors =
+        new FieldDescriptor[] {
+          fieldWithPath("taskHistoryEvents[].taskHistoryId")
+              .description(taskHistoryEventFieldDescriptionsMap.get("taskHistoryId")),
+          fieldWithPath("taskHistoryEvents[].businessProcessId")
+              .description(taskHistoryEventFieldDescriptionsMap.get("businessProcessId")),
+          fieldWithPath("taskHistoryEvents[].parentBusinessProcessId")
+              .description(taskHistoryEventFieldDescriptionsMap.get("parentBusinessProcessId")),
+          fieldWithPath("taskHistoryEvents[].taskId")
+              .description(taskHistoryEventFieldDescriptionsMap.get("taskId")),
+          fieldWithPath("taskHistoryEvents[].eventType")
+              .description(taskHistoryEventFieldDescriptionsMap.get("eventType")),
+          fieldWithPath("taskHistoryEvents[].created")
+              .description(taskHistoryEventFieldDescriptionsMap.get("created")),
+          fieldWithPath("taskHistoryEvents[].userId")
+              .description(taskHistoryEventFieldDescriptionsMap.get("userId")),
+          fieldWithPath("taskHistoryEvents[].domain")
+              .description(taskHistoryEventFieldDescriptionsMap.get("domain")),
+          fieldWithPath("taskHistoryEvents[].workbasketKey")
+              .description(taskHistoryEventFieldDescriptionsMap.get("workbasketKey")),
+          fieldWithPath("taskHistoryEvents[].porCompany")
+              .description(taskHistoryEventFieldDescriptionsMap.get("porCompany")),
+          fieldWithPath("taskHistoryEvents[].porSystem")
+              .description(taskHistoryEventFieldDescriptionsMap.get("porSystem")),
+          fieldWithPath("taskHistoryEvents[].porInstance")
+              .description(taskHistoryEventFieldDescriptionsMap.get("porInstance")),
+          fieldWithPath("taskHistoryEvents[].porValue")
+              .description(taskHistoryEventFieldDescriptionsMap.get("porValue")),
+          fieldWithPath("taskHistoryEvents[].porType")
+              .description(taskHistoryEventFieldDescriptionsMap.get("porType")),
+          fieldWithPath("taskHistoryEvents[].taskClassificationKey")
+              .description(taskHistoryEventFieldDescriptionsMap.get("taskClassificationKey")),
+          fieldWithPath("taskHistoryEvents[].taskClassificationCategory")
+              .description(taskHistoryEventFieldDescriptionsMap.get("taskClassificationCategory")),
+          fieldWithPath("taskHistoryEvents[].attachmentClassificationKey")
+              .description(taskHistoryEventFieldDescriptionsMap.get("attachmentClassificationKey")),
+          fieldWithPath("taskHistoryEvents[].comment")
+              .description(taskHistoryEventFieldDescriptionsMap.get("comment")),
+          fieldWithPath("taskHistoryEvents[].oldValue")
+              .description(taskHistoryEventFieldDescriptionsMap.get("oldValue")),
+          fieldWithPath("taskHistoryEvents[].newValue")
+              .description(taskHistoryEventFieldDescriptionsMap.get("newValue")),
+          fieldWithPath("taskHistoryEvents[].custom1")
+              .description(taskHistoryEventFieldDescriptionsMap.get("custom1")),
+          fieldWithPath("taskHistoryEvents[].custom2")
+              .description(taskHistoryEventFieldDescriptionsMap.get("custom2")),
+          fieldWithPath("taskHistoryEvents[].custom3")
+              .description(taskHistoryEventFieldDescriptionsMap.get("custom3")),
+          fieldWithPath("taskHistoryEvents[].custom4")
+              .description(taskHistoryEventFieldDescriptionsMap.get("custom4")),
+          fieldWithPath("taskHistoryEvents[].oldData")
+              .description(taskHistoryEventFieldDescriptionsMap.get("oldData")),
+          fieldWithPath("taskHistoryEvents[].newData")
+              .description(taskHistoryEventFieldDescriptionsMap.get("newData")),
+          fieldWithPath("_links.self.href").ignored(),
+          fieldWithPath("page").ignored()
         };
-    }
+  }
 
-    @Test
-    public void getAllTaskHistoryEventDocTest() throws Exception {
-        this.mockMvc.perform(
+  @Test
+  public void getAllTaskHistoryEventDocTest() throws Exception {
+    this.mockMvc
+        .perform(
             RestDocumentationRequestBuilders.get(
-                "http://127.0.0.1:" + port + "/api/v1/task-history-event?page=1&page-size=3")
+                    "http://127.0.0.1:" + port + "/api/v1/task-history-event?page=1&page-size=3")
                 .accept("application/hal+json")
                 .header("Authorization", "Basic dGVhbWxlYWRfMTp0ZWFtbGVhZF8x"))
-            .andExpect(MockMvcResultMatchers.status().isOk())
-            .andDo(MockMvcRestDocumentation.document("GetAllTaskHistoryEventDocTest",
+        .andExpect(MockMvcResultMatchers.status().isOk())
+        .andDo(
+            MockMvcRestDocumentation.document(
+                "GetAllTaskHistoryEventDocTest",
                 responseFields(allTaskHistoryEventFieldDescriptors)));
-    }
+  }
 
-    @Test
-    public void getSpecificTaskHistoryEventDocTest() throws Exception {
-        this.mockMvc.perform(RestDocumentationRequestBuilders.get(
-            "http://127.0.0.1:" + port + "/api/v1/task-history-event?business-process-id=BPI:02")
-            .accept("application/hal+json")
-            .header("Authorization", "Basic dGVhbWxlYWRfMTp0ZWFtbGVhZF8x"))
-            .andExpect(MockMvcResultMatchers.status().isOk())
-            .andDo(MockMvcRestDocumentation.document("GetSpecificTaskHistoryEventDocTest",
+  @Test
+  public void getSpecificTaskHistoryEventDocTest() throws Exception {
+    this.mockMvc
+        .perform(
+            RestDocumentationRequestBuilders.get(
+                    "http://127.0.0.1:"
+                        + port
+                        + "/api/v1/task-history-event?business-process-id=BPI:02")
+                .accept("application/hal+json")
+                .header("Authorization", "Basic dGVhbWxlYWRfMTp0ZWFtbGVhZF8x"))
+        .andExpect(MockMvcResultMatchers.status().isOk())
+        .andDo(
+            MockMvcRestDocumentation.document(
+                "GetSpecificTaskHistoryEventDocTest",
                 responseFields(taskHistoryEventFieldDescriptors)));
-    }
+  }
 }

lib/taskana-cdi-example/src/main/java/pro/taskana/ExampleBootstrap.java

@@ -15,37 +15,33 @@ import pro.taskana.exceptions.TaskAlreadyExistException;
 import pro.taskana.exceptions.TaskNotFoundException;
 import pro.taskana.exceptions.WorkbasketNotFoundException;
 
-/**
- * Example Bootstrap Application.
- */
+/** Example Bootstrap Application. */
 @ApplicationScoped
 public class ExampleBootstrap {
 
-    @EJB
-    private TaskanaEjb taskanaEjb;
-
-    @PostConstruct
-    public void init(@Observes @Initialized(ApplicationScoped.class) Object init)
-        throws TaskNotFoundException, NotAuthorizedException, WorkbasketNotFoundException,
-        ClassificationNotFoundException, InvalidStateException, InvalidOwnerException, TaskAlreadyExistException,
-        InvalidArgumentException {
-        System.out.println("---------------------------> Start App");
-        Task task = taskanaEjb.getTaskService().newTask(null);
-        ObjectReference objRef = new ObjectReference();
-        objRef.setCompany("aCompany");
-        objRef.setSystem("aSystem");
-        objRef.setSystemInstance("anInstance");
-        objRef.setType("aType");
-        objRef.setValue("aValue");
-        task.setPrimaryObjRef(objRef);
-        task = taskanaEjb.getTaskService().createTask(task);
-        System.out.println("---------------------------> Task started: " + task.getId());
-        taskanaEjb.getTaskService().claim(task.getId());
-        System.out.println(
-            "---------------------------> Task claimed: "
-                + taskanaEjb.getTaskService().getTask(task.getId()).getOwner());
-        taskanaEjb.getTaskService().completeTask(task.getId());
-        System.out.println("---------------------------> Task completed");
-    }
+  @EJB private TaskanaEjb taskanaEjb;
 
+  @PostConstruct
+  public void init(@Observes @Initialized(ApplicationScoped.class) Object init)
+      throws TaskNotFoundException, NotAuthorizedException, WorkbasketNotFoundException,
+          ClassificationNotFoundException, InvalidStateException, InvalidOwnerException,
+          TaskAlreadyExistException, InvalidArgumentException {
+    System.out.println("---------------------------> Start App");
+    Task task = taskanaEjb.getTaskService().newTask(null);
+    ObjectReference objRef = new ObjectReference();
+    objRef.setCompany("aCompany");
+    objRef.setSystem("aSystem");
+    objRef.setSystemInstance("anInstance");
+    objRef.setType("aType");
+    objRef.setValue("aValue");
+    task.setPrimaryObjRef(objRef);
+    task = taskanaEjb.getTaskService().createTask(task);
+    System.out.println("---------------------------> Task started: " + task.getId());
+    taskanaEjb.getTaskService().claim(task.getId());
+    System.out.println(
+        "---------------------------> Task claimed: "
+            + taskanaEjb.getTaskService().getTask(task.getId()).getOwner());
+    taskanaEjb.getTaskService().completeTask(task.getId());
+    System.out.println("---------------------------> Task completed");
+  }
 }

lib/taskana-cdi-example/src/main/java/pro/taskana/TaskanaEjb.java

@@ -3,16 +3,13 @@ package pro.taskana;
 import javax.ejb.Stateless;
 import javax.inject.Inject;
 
-/**
- * example Taskana EJB.
- */
+/** example Taskana EJB. */
 @Stateless
 public class TaskanaEjb {
 
-    @Inject
-    private TaskService taskService;
+  @Inject private TaskService taskService;
 
-    public TaskService getTaskService() {
-        return taskService;
-    }
+  public TaskService getTaskService() {
+    return taskService;
+  }
 }

lib/taskana-cdi/src/main/java/pro/taskana/TaskanaProducers.java

@@ -6,7 +6,6 @@ import java.sql.Connection;
 import java.sql.DatabaseMetaData;
 import java.sql.SQLException;
 import java.util.Properties;
-
 import javax.annotation.PostConstruct;
 import javax.enterprise.context.ApplicationScoped;
 import javax.enterprise.inject.Produces;
@@ -15,71 +14,67 @@ import javax.naming.Context;
 import javax.naming.InitialContext;
 import javax.naming.NamingException;
 import javax.sql.DataSource;
-
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
 import pro.taskana.configuration.TaskanaEngineConfiguration;
 
-/**
- * TODO.
- */
+/** TODO. */
 @ApplicationScoped
 public class TaskanaProducers {
 
-    private static final Logger LOGGER = LoggerFactory.getLogger(TaskanaProducers.class);
+  private static final Logger LOGGER = LoggerFactory.getLogger(TaskanaProducers.class);
 
-    private static final String TASKANA_PROPERTIES = "taskana.properties";
+  private static final String TASKANA_PROPERTIES = "taskana.properties";
 
-    @Inject
-    private TaskanaEngine taskanaEngine;
+  @Inject private TaskanaEngine taskanaEngine;
 
-    private TaskanaEngineConfiguration taskanaEngineConfiguration;
+  private TaskanaEngineConfiguration taskanaEngineConfiguration;
 
-    @PostConstruct
-    public void init() {
-        // Load Properties and get Datasource via Context
-        // Load DataSource via Container
-        Context ctx;
-        DataSource dataSource;
-        ClassLoader classloader = Thread.currentThread().getContextClassLoader();
-        try (InputStream propertyStream = classloader.getResourceAsStream(TASKANA_PROPERTIES)) {
-            Properties properties = new Properties();
-            ctx = new InitialContext();
-            properties.load(propertyStream);
-            dataSource = (DataSource) ctx.lookup(properties.getProperty("datasource.jndi"));
-            try (Connection connection = dataSource.getConnection()) {
-                DatabaseMetaData metaData = connection.getMetaData();
-                LOGGER.debug("---------------> " + metaData);
-            }
-            this.taskanaEngineConfiguration = new TaskanaEngineConfiguration(dataSource, true, false, "TASKANA");
-        } catch (NamingException | SQLException | IOException e) {
-            LOGGER.error("Could not start Taskana: ", e);
-        }
+  @PostConstruct
+  public void init() {
+    // Load Properties and get Datasource via Context
+    // Load DataSource via Container
+    Context ctx;
+    DataSource dataSource;
+    ClassLoader classloader = Thread.currentThread().getContextClassLoader();
+    try (InputStream propertyStream = classloader.getResourceAsStream(TASKANA_PROPERTIES)) {
+      Properties properties = new Properties();
+      ctx = new InitialContext();
+      properties.load(propertyStream);
+      dataSource = (DataSource) ctx.lookup(properties.getProperty("datasource.jndi"));
+      try (Connection connection = dataSource.getConnection()) {
+        DatabaseMetaData metaData = connection.getMetaData();
+        LOGGER.debug("---------------> " + metaData);
+      }
+      this.taskanaEngineConfiguration =
+          new TaskanaEngineConfiguration(dataSource, true, false, "TASKANA");
+    } catch (NamingException | SQLException | IOException e) {
+      LOGGER.error("Could not start Taskana: ", e);
     }
+  }
 
-    @ApplicationScoped
-    @Produces
-    public TaskanaEngine generateTaskEngine() {
-        return taskanaEngineConfiguration.buildTaskanaEngine();
-    }
+  @ApplicationScoped
+  @Produces
+  public TaskanaEngine generateTaskEngine() {
+    return taskanaEngineConfiguration.buildTaskanaEngine();
+  }
 
-    @ApplicationScoped
-    @Produces
-    public TaskService generateTaskService() {
-        return taskanaEngine.getTaskService();
-    }
+  @ApplicationScoped
+  @Produces
+  public TaskService generateTaskService() {
+    return taskanaEngine.getTaskService();
+  }
 
-    @ApplicationScoped
-    @Produces
-    public ClassificationService generateClassificationService() {
-        return taskanaEngine.getClassificationService();
-    }
-
-    @ApplicationScoped
-    @Produces
-    public WorkbasketService generateWorkbasketService() {
-        return taskanaEngine.getWorkbasketService();
-    }
+  @ApplicationScoped
+  @Produces
+  public ClassificationService generateClassificationService() {
+    return taskanaEngine.getClassificationService();
+  }
 
+  @ApplicationScoped
+  @Produces
+  public WorkbasketService generateWorkbasketService() {
+    return taskanaEngine.getWorkbasketService();
+  }
 }

lib/taskana-cdi/src/test/java/pro/taskana/RestApplication.java

@@ -3,9 +3,6 @@ package pro.taskana;
 import javax.ws.rs.ApplicationPath;
 import javax.ws.rs.core.Application;
 
-/**
- * TODO Why does this test exist?
- */
+/** TODO Why does this test exist? */
 @ApplicationPath("/rest")
-public class RestApplication extends Application {
-}
+public class RestApplication extends Application {}

lib/taskana-cdi/src/test/java/pro/taskana/TaskanaEjb.java

@@ -9,47 +9,42 @@ import pro.taskana.exceptions.NotAuthorizedException;
 import pro.taskana.exceptions.TaskAlreadyExistException;
 import pro.taskana.exceptions.WorkbasketNotFoundException;
 
-/**
- * TODO.
- */
+/** TODO. */
 @Stateless
 public class TaskanaEjb {
 
-    @Inject
-    private TaskService taskService;
+  @Inject private TaskService taskService;
 
-    @Inject
-    private ClassificationService classificationService;
+  @Inject private ClassificationService classificationService;
 
-    @Inject
-    private WorkbasketService workbasketService;
+  @Inject private WorkbasketService workbasketService;
 
-    public TaskService getTaskService() {
-        return taskService;
-    }
+  public TaskService getTaskService() {
+    return taskService;
+  }
 
-    public ClassificationService getClassificationService() {
-        return classificationService;
-    }
+  public ClassificationService getClassificationService() {
+    return classificationService;
+  }
 
-    public WorkbasketService getWorkbasketService() {
-        return workbasketService;
-    }
+  public WorkbasketService getWorkbasketService() {
+    return workbasketService;
+  }
 
-    public void triggerRollback() throws NotAuthorizedException, WorkbasketNotFoundException,
-        ClassificationNotFoundException, TaskAlreadyExistException, InvalidArgumentException {
-        Task task = taskService.newTask(null);
-        ObjectReference objRef = new ObjectReference();
-        objRef.setCompany("aCompany");
-        objRef.setSystem("aSystem");
-        objRef.setSystemInstance("anInstance");
-        objRef.setType("aType");
-        objRef.setValue("aValue");
-        task.setPrimaryObjRef(objRef);
-
-        taskService.createTask(task);
-        System.out.println("---------------->" + task.getId());
-        throw new RuntimeException();
-    }
+  public void triggerRollback()
+      throws NotAuthorizedException, WorkbasketNotFoundException, ClassificationNotFoundException,
+          TaskAlreadyExistException, InvalidArgumentException {
+    Task task = taskService.newTask(null);
+    ObjectReference objRef = new ObjectReference();
+    objRef.setCompany("aCompany");
+    objRef.setSystem("aSystem");
+    objRef.setSystemInstance("anInstance");
+    objRef.setType("aType");
+    objRef.setValue("aValue");
+    task.setPrimaryObjRef(objRef);
 
+    taskService.createTask(task);
+    System.out.println("---------------->" + task.getId());
+    throw new RuntimeException();
+  }
 }

lib/taskana-cdi/src/test/java/pro/taskana/TaskanaProducersTest.java

@@ -4,10 +4,8 @@ import java.sql.Connection;
 import java.sql.DriverManager;
 import java.sql.ResultSet;
 import java.sql.SQLException;
-
 import javax.ws.rs.client.Client;
 import javax.ws.rs.client.ClientBuilder;
-
 import org.jboss.arquillian.container.test.api.Deployment;
 import org.jboss.arquillian.junit.Arquillian;
 import org.jboss.shrinkwrap.api.Archive;
@@ -17,64 +15,66 @@ import org.junit.Test;
 import org.junit.runner.RunWith;
 import org.wildfly.swarm.undertow.WARArchive;
 
-/**
- * TODO.
- */
+/** TODO. */
 @RunWith(Arquillian.class)
 public class TaskanaProducersTest {
 
-    @Deployment(testable = false)
-    public static Archive<?> createDeployment() throws Exception {
-        WARArchive deployment = ShrinkWrap.create(WARArchive.class);
-        deployment.addPackage("pro.taskana");
-        deployment.addClass(TaskanaProducers.class);
-        deployment.addAllDependencies();
-        deployment.addDependency("org.mybatis:mybatis:3.4.2");
-        deployment.addDependency("org.mybatis:mybatis-cdi:1.0.0");
-        deployment.addDependency("pro.taskana:taskana-core");
-        deployment.addAsResource("META-INF/beans.xml");
-        deployment.addAsResource("taskana.properties");
-        deployment.addAsResource("project-defaults.yml");
-        return deployment;
-    }
+  @Deployment(testable = false)
+  public static Archive<?> createDeployment() throws Exception {
+    WARArchive deployment = ShrinkWrap.create(WARArchive.class);
+    deployment.addPackage("pro.taskana");
+    deployment.addClass(TaskanaProducers.class);
+    deployment.addAllDependencies();
+    deployment.addDependency("org.mybatis:mybatis:3.4.2");
+    deployment.addDependency("org.mybatis:mybatis-cdi:1.0.0");
+    deployment.addDependency("pro.taskana:taskana-core");
+    deployment.addAsResource("META-INF/beans.xml");
+    deployment.addAsResource("taskana.properties");
+    deployment.addAsResource("project-defaults.yml");
+    return deployment;
+  }
 
-    @Test
-    public void testCommit() throws SQLException, ClassNotFoundException {
+  @Test
+  public void testCommit() throws SQLException, ClassNotFoundException {
 
-        Client client = ClientBuilder.newClient();
-        client.target("http://127.0.0.1:8090/rest/test").request().get();
+    Client client = ClientBuilder.newClient();
+    client.target("http://127.0.0.1:8090/rest/test").request().get();
 
-        Class.forName("org.h2.Driver");
-        int resultCount = 0;
-        try (Connection conn = DriverManager.getConnection(
+    Class.forName("org.h2.Driver");
+    int resultCount = 0;
+    try (Connection conn =
+        DriverManager.getConnection(
             "jdbc:h2:~/taskana-h2-data/testdb;AUTO_SERVER=TRUE;IGNORECASE=TRUE;LOCK_MODE=0",
-            "SA", "SA")) {
-            ResultSet rs = conn.createStatement().executeQuery("SELECT ID, OWNER FROM TASKANA.TASK");
+            "SA",
+            "SA")) {
+      ResultSet rs = conn.createStatement().executeQuery("SELECT ID, OWNER FROM TASKANA.TASK");
 
-            while (rs.next()) {
-                resultCount++;
-            }
-        }
-        Assert.assertEquals(0, resultCount);
+      while (rs.next()) {
+        resultCount++;
+      }
     }
+    Assert.assertEquals(0, resultCount);
+  }
 
-    @Test
-    public void testRollback() throws SQLException, ClassNotFoundException {
-        Client client = ClientBuilder.newClient();
-        client.target("http://127.0.0.1:8090/rest/test").request().post(null);
+  @Test
+  public void testRollback() throws SQLException, ClassNotFoundException {
+    Client client = ClientBuilder.newClient();
+    client.target("http://127.0.0.1:8090/rest/test").request().post(null);
 
-        Class.forName("org.h2.Driver");
-        int resultCount = 0;
-        try (Connection conn = DriverManager.getConnection(
+    Class.forName("org.h2.Driver");
+    int resultCount = 0;
+    try (Connection conn =
+        DriverManager.getConnection(
             "jdbc:h2:~/taskana-h2-data/testdb;AUTO_SERVER=TRUE;IGNORECASE=TRUE;LOCK_MODE=0",
-            "SA", "SA")) {
-            ResultSet rs = conn.createStatement().executeQuery("SELECT ID, OWNER FROM TASKANA.TASK");
+            "SA",
+            "SA")) {
+      ResultSet rs = conn.createStatement().executeQuery("SELECT ID, OWNER FROM TASKANA.TASK");
 
-            while (rs.next()) {
-                resultCount++;
-            }
-        }
-
-        Assert.assertEquals(0, resultCount);
+      while (rs.next()) {
+        resultCount++;
+      }
     }
+
+    Assert.assertEquals(0, resultCount);
+  }
 }

lib/taskana-cdi/src/test/java/pro/taskana/TaskanaRestTest.java

@@ -8,7 +8,6 @@ import javax.ws.rs.POST;
 import javax.ws.rs.Path;
 import javax.ws.rs.PathParam;
 import javax.ws.rs.core.Response;
-
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
@@ -25,61 +24,60 @@ import pro.taskana.exceptions.TaskNotFoundException;
 import pro.taskana.exceptions.WorkbasketAlreadyExistException;
 import pro.taskana.exceptions.WorkbasketNotFoundException;
 
-/**
- * TODO.
- */
+/** TODO. */
 @Path("/test")
 public class TaskanaRestTest {
 
-    private static final Logger LOGGER = LoggerFactory.getLogger(TaskanaRestTest.class);
+  private static final Logger LOGGER = LoggerFactory.getLogger(TaskanaRestTest.class);
 
-    @EJB
-    private TaskanaEjb taskanaEjb;
+  @EJB private TaskanaEjb taskanaEjb;
 
-    @Inject
-    private ClassificationService classificationService;
+  @Inject private ClassificationService classificationService;
 
-    @GET
-    public Response startTask() throws NotAuthorizedException, WorkbasketNotFoundException,
-        ClassificationNotFoundException, ClassificationAlreadyExistException, InvalidWorkbasketException,
-        TaskAlreadyExistException, InvalidArgumentException, WorkbasketAlreadyExistException, DomainNotFoundException {
-        Workbasket workbasket = taskanaEjb.getWorkbasketService().newWorkbasket("key", "cdiDomain");
-        workbasket.setName("wb");
-        workbasket.setType(WorkbasketType.PERSONAL);
-        taskanaEjb.getWorkbasketService().createWorkbasket(workbasket);
-        Classification classification = classificationService.newClassification("TEST", "cdiDomain", "t1");
-        taskanaEjb.getClassificationService().createClassification(classification);
+  @GET
+  public Response startTask()
+      throws NotAuthorizedException, WorkbasketNotFoundException, ClassificationNotFoundException,
+          ClassificationAlreadyExistException, InvalidWorkbasketException,
+          TaskAlreadyExistException, InvalidArgumentException, WorkbasketAlreadyExistException,
+          DomainNotFoundException {
+    Workbasket workbasket = taskanaEjb.getWorkbasketService().newWorkbasket("key", "cdiDomain");
+    workbasket.setName("wb");
+    workbasket.setType(WorkbasketType.PERSONAL);
+    taskanaEjb.getWorkbasketService().createWorkbasket(workbasket);
+    Classification classification =
+        classificationService.newClassification("TEST", "cdiDomain", "t1");
+    taskanaEjb.getClassificationService().createClassification(classification);
 
-        Task task = taskanaEjb.getTaskService().newTask(workbasket.getKey());
-        task.setClassificationKey(classification.getKey());
-        ObjectReference objRef = new ObjectReference();
-        objRef.setCompany("aCompany");
-        objRef.setSystem("aSystem");
-        objRef.setSystemInstance("anInstance");
-        objRef.setType("aType");
-        objRef.setValue("aValue");
-        task.setPrimaryObjRef(objRef);
+    Task task = taskanaEjb.getTaskService().newTask(workbasket.getKey());
+    task.setClassificationKey(classification.getKey());
+    ObjectReference objRef = new ObjectReference();
+    objRef.setCompany("aCompany");
+    objRef.setSystem("aSystem");
+    objRef.setSystemInstance("anInstance");
+    objRef.setType("aType");
+    objRef.setValue("aValue");
+    task.setPrimaryObjRef(objRef);
 
-        Task result = taskanaEjb.getTaskService().createTask(task);
+    Task result = taskanaEjb.getTaskService().createTask(task);
 
-        LOGGER.info(result.getId() + ":" + result.getOwner());
-        return Response.status(200).entity(result.getId()).build();
-    }
+    LOGGER.info(result.getId() + ":" + result.getOwner());
+    return Response.status(200).entity(result.getId()).build();
+  }
 
-    @POST
-    public Response rollbackTask()
-        throws NotAuthorizedException, WorkbasketNotFoundException, ClassificationNotFoundException,
-        TaskAlreadyExistException, InvalidArgumentException {
-        taskanaEjb.triggerRollback();
-        return Response.status(204).build();
-    }
-
-    @DELETE
-    @Path("{id}")
-    public void completeTask(@PathParam("id") String id)
-        throws TaskNotFoundException, InvalidOwnerException, InvalidStateException, NotAuthorizedException {
-        LOGGER.info(id);
-        taskanaEjb.getTaskService().forceCompleteTask(id);
-    }
+  @POST
+  public Response rollbackTask()
+      throws NotAuthorizedException, WorkbasketNotFoundException, ClassificationNotFoundException,
+          TaskAlreadyExistException, InvalidArgumentException {
+    taskanaEjb.triggerRollback();
+    return Response.status(204).build();
+  }
 
+  @DELETE
+  @Path("{id}")
+  public void completeTask(@PathParam("id") String id)
+      throws TaskNotFoundException, InvalidOwnerException, InvalidStateException,
+          NotAuthorizedException {
+    LOGGER.info(id);
+    taskanaEjb.getTaskService().forceCompleteTask(id);
+  }
 }

lib/taskana-core/src/main/java/pro/taskana/AbstractWorkbasketAccessItemQuery.java

@@ -6,64 +6,58 @@ package pro.taskana;
  * @param <Q> the actual WorkbasketAccessItemQuery behind this interface class
  * @param <T> the workbasket access item
  */
-public interface AbstractWorkbasketAccessItemQuery<Q extends AbstractWorkbasketAccessItemQuery<Q, T>, T extends WorkbasketAccessItem>
+public interface AbstractWorkbasketAccessItemQuery<
+        Q extends AbstractWorkbasketAccessItemQuery<Q, T>, T extends WorkbasketAccessItem>
     extends BaseQuery<T, AccessItemQueryColumnName> {
 
-    /**
-     * Add your unique entry id to your query as filter.
-     *
-     * @param ids
-     *            the unique entry IDs
-     * @return the query
-     */
-    Q idIn(String... ids);
+  /**
+   * Add your unique entry id to your query as filter.
+   *
+   * @param ids the unique entry IDs
+   * @return the query
+   */
+  Q idIn(String... ids);
 
-    /**
-     * Add your workbasket id to your query.
-     *
-     * @param workbasketId
-     *            the workbasket Id
-     * @return the query
-     */
-    Q workbasketIdIn(String... workbasketId);
+  /**
+   * Add your workbasket id to your query.
+   *
+   * @param workbasketId the workbasket Id
+   * @return the query
+   */
+  Q workbasketIdIn(String... workbasketId);
 
-    /**
-     * Add your accessIds to your query.
-     *
-     * @param accessId
-     *            as access Ids
-     * @return the query
-     */
-    Q accessIdIn(String... accessId);
+  /**
+   * Add your accessIds to your query.
+   *
+   * @param accessId as access Ids
+   * @return the query
+   */
+  Q accessIdIn(String... accessId);
 
-    /**
-     * Sort the query result by workbasket id.
-     *
-     * @param sortDirection
-     *            Determines whether the result is sorted in ascending or descending order. If sortDirection is null,
-     *            the result is sorted in ascending order
-     * @return the query
-     */
-    Q orderByWorkbasketId(SortDirection sortDirection);
+  /**
+   * Sort the query result by workbasket id.
+   *
+   * @param sortDirection Determines whether the result is sorted in ascending or descending order.
+   *     If sortDirection is null, the result is sorted in ascending order
+   * @return the query
+   */
+  Q orderByWorkbasketId(SortDirection sortDirection);
 
-    /**
-     * Sort the query result by access Id.
-     *
-     * @param sortDirection
-     *            Determines whether the result is sorted in ascending or descending order. If sortDirection is null,
-     *            the result is sorted in ascending order
-     * @return the query
-     */
-    Q orderByAccessId(SortDirection sortDirection);
-
-    /**
-     * Sort the query result by Id.
-     *
-     * @param sortDirection
-     *            Determines whether the result is sorted in ascending or descending order. If sortDirection is null,
-     *            the result is sorted in ascending order
-     * @return the query
-     */
-    Q orderById(SortDirection sortDirection);
+  /**
+   * Sort the query result by access Id.
+   *
+   * @param sortDirection Determines whether the result is sorted in ascending or descending order.
+   *     If sortDirection is null, the result is sorted in ascending order
+   * @return the query
+   */
+  Q orderByAccessId(SortDirection sortDirection);
 
+  /**
+   * Sort the query result by Id.
+   *
+   * @param sortDirection Determines whether the result is sorted in ascending or descending order.
+   *     If sortDirection is null, the result is sorted in ascending order
+   * @return the query
+   */
+  Q orderById(SortDirection sortDirection);
 }

lib/taskana-core/src/main/java/pro/taskana/AccessItemQueryColumnName.java

@@ -1,24 +1,25 @@
 package pro.taskana;
 
 /**
- * Enum containing the column names for @see pro.taskana.mappings.QueryMapper#queryWorkbasketAccessItemColumnValues(WorkbasketAccessItemQuery).
+ * Enum containing the column names for @see
+ * pro.taskana.mappings.QueryMapper#queryWorkbasketAccessItemColumnValues(WorkbasketAccessItemQuery).
  *
  * @author jsa
  */
 public enum AccessItemQueryColumnName implements QueryColumnName {
+  ID("id"),
+  WORKBASKET_ID("workbasket_id"),
+  WORKBASKET_KEY("wb.key"),
+  ACCESS_ID("access_id");
 
-    ID("id"),
-    WORKBASKET_ID("workbasket_id"),
-    WORKBASKET_KEY("wb.key"),
-    ACCESS_ID("access_id");
+  private String name;
 
-    private String name;
-    AccessItemQueryColumnName(String name) {
-        this.name = name;
-    }
+  AccessItemQueryColumnName(String name) {
+    this.name = name;
+  }
 
-    @Override
-    public String toString() {
-        return name;
-    }
+  @Override
+  public String toString() {
+    return name;
+  }
 }

lib/taskana-core/src/main/java/pro/taskana/Attachment.java

@@ -3,119 +3,112 @@ package pro.taskana;
 import java.time.Instant;
 import java.util.Map;
 
-/**
- * Attachment-Interface to specify Attachment Attributes.
- */
+/** Attachment-Interface to specify Attachment Attributes. */
 public interface Attachment {
 
-    /**
-     * Returns the current id of the attachment.
-     *
-     * @return ID of attachment
-     */
-    String getId();
+  /**
+   * Returns the current id of the attachment.
+   *
+   * @return ID of attachment
+   */
+  String getId();
 
-    /**
-     * Returns the id of the associated task.
-     *
-     * @return taskId
-     */
-    String getTaskId();
+  /**
+   * Returns the id of the associated task.
+   *
+   * @return taskId
+   */
+  String getTaskId();
 
-    /**
-     * Returns the time when the attachment was created.
-     *
-     * @return the created time as {@link Instant}
-     */
-    Instant getCreated();
+  /**
+   * Returns the time when the attachment was created.
+   *
+   * @return the created time as {@link Instant}
+   */
+  Instant getCreated();
 
-    /**
-     * Returns the time when the attachment was last modified.
-     *
-     * @return modified {@link Instant} of the attachment
-     */
-    Instant getModified();
+  /**
+   * Returns the time when the attachment was last modified.
+   *
+   * @return modified {@link Instant} of the attachment
+   */
+  Instant getModified();
 
-    /**
-     * Returns the classification summary of the attachment.
-     *
-     * @return the {@link ClassificationSummary} of this attachment
-     */
-    ClassificationSummary getClassificationSummary();
+  /**
+   * Returns the classification summary of the attachment.
+   *
+   * @return the {@link ClassificationSummary} of this attachment
+   */
+  ClassificationSummary getClassificationSummary();
 
-    /**
-     * Set the classification summary for this attachment.
-     *
-     * @param classificationSummary
-     *            the {@link ClassificationSummary} for this attachment
-     */
-    void setClassificationSummary(ClassificationSummary classificationSummary);
+  /**
+   * Set the classification summary for this attachment.
+   *
+   * @param classificationSummary the {@link ClassificationSummary} for this attachment
+   */
+  void setClassificationSummary(ClassificationSummary classificationSummary);
 
-    /**
-     * Returns the {@link ObjectReference primaryObjectReference} of the attachment.
-     *
-     * @return {@link ObjectReference primaryObjectReference} of the attachment
-     **/
-    ObjectReference getObjectReference();
+  /**
+   * Returns the {@link ObjectReference primaryObjectReference} of the attachment.
+   *
+   * @return {@link ObjectReference primaryObjectReference} of the attachment
+   */
+  ObjectReference getObjectReference();
 
-    /**
-     * Sets the {@link ObjectReference primaryObjectReference} of the attachment.
-     *
-     * @param objectReference
-     *            the {@link ObjectReference primaryObjectReference} of the attachment
-     */
-    void setObjectReference(ObjectReference objectReference);
+  /**
+   * Sets the {@link ObjectReference primaryObjectReference} of the attachment.
+   *
+   * @param objectReference the {@link ObjectReference primaryObjectReference} of the attachment
+   */
+  void setObjectReference(ObjectReference objectReference);
 
-    /**
-     * Returns the Channel on which the attachment was received.
-     *
-     * @return the Channel on which the attachment was received.
-     **/
-    String getChannel();
+  /**
+   * Returns the Channel on which the attachment was received.
+   *
+   * @return the Channel on which the attachment was received.
+   */
+  String getChannel();
 
-    /**
-     * Sets the Channel on which the attachment was received.
-     *
-     * @param channel
-     *            the channel on which the attachment was received
-     */
-    void setChannel(String channel);
+  /**
+   * Sets the Channel on which the attachment was received.
+   *
+   * @param channel the channel on which the attachment was received
+   */
+  void setChannel(String channel);
 
-    /**
-     * Returns the time when this attachment was received.
-     *
-     * @return received time as exact {@link Instant}
-     */
-    Instant getReceived();
+  /**
+   * Returns the time when this attachment was received.
+   *
+   * @return received time as exact {@link Instant}
+   */
+  Instant getReceived();
 
-    /**
-     * Sets the time when the attachment was received.
-     *
-     * @param received
-     *            the time as {@link Instant} when the attachment was received
-     **/
-    void setReceived(Instant received);
+  /**
+   * Sets the time when the attachment was received.
+   *
+   * @param received the time as {@link Instant} when the attachment was received
+   */
+  void setReceived(Instant received);
 
-    /**
-     * Returns the custom attributes of this attachment.
-     *
-     * @return customAttributes as {@link Map}
-     */
-    Map<String, String> getCustomAttributes();
+  /**
+   * Returns the custom attributes of this attachment.
+   *
+   * @return customAttributes as {@link Map}
+   */
+  Map<String, String> getCustomAttributes();
 
-    /**
-     * Sets the custom attribute Map of the attachment.
-     *
-     * @param customAttributes
-     *            a {@link Map} that contains the custom attributes of the attachment as key, value pairs
-     */
-    void setCustomAttributes(Map<String, String> customAttributes);
-
-    /**
-     * Return a summary of the current Attachment.
-     *
-     * @return the AttachmentSummary object for the current attachment
-     */
-    AttachmentSummary asSummary();
+  /**
+   * Sets the custom attribute Map of the attachment.
+   *
+   * @param customAttributes a {@link Map} that contains the custom attributes of the attachment as
+   *     key, value pairs
+   */
+  void setCustomAttributes(Map<String, String> customAttributes);
 
+  /**
+   * Return a summary of the current Attachment.
+   *
+   * @return the AttachmentSummary object for the current attachment
+   */
+  AttachmentSummary asSummary();
 }

lib/taskana-core/src/main/java/pro/taskana/AttachmentSummary.java

@@ -3,64 +3,64 @@ package pro.taskana;
 import java.time.Instant;
 
 /**
- * Interface for AttachmentSummaries. This is a specific short model-object which only contains the most important
- * information.
+ * Interface for AttachmentSummaries. This is a specific short model-object which only contains the
+ * most important information.
  */
 public interface AttachmentSummary {
 
-    /**
-     * Gets the id of the attachment.
-     *
-     * @return attachmentId
-     */
-    String getId();
+  /**
+   * Gets the id of the attachment.
+   *
+   * @return attachmentId
+   */
+  String getId();
 
-    /**
-     * Gets the id of the associated task.
-     *
-     * @return taskId
-     */
-    String getTaskId();
+  /**
+   * Gets the id of the associated task.
+   *
+   * @return taskId
+   */
+  String getTaskId();
 
-    /**
-     * Gets the time when the attachment was created.
-     *
-     * @return the created Instant
-     */
-    Instant getCreated();
+  /**
+   * Gets the time when the attachment was created.
+   *
+   * @return the created Instant
+   */
+  Instant getCreated();
 
-    /**
-     * Gets the time when the attachment was last modified.
-     *
-     * @return the last modified Instant
-     */
-    Instant getModified();
+  /**
+   * Gets the time when the attachment was last modified.
+   *
+   * @return the last modified Instant
+   */
+  Instant getModified();
 
-    /**
-     * Gets the {@link ObjectReference primaryObjectReference} of the attachment.
-     *
-     * @return {@link ObjectReference primaryObjectReference} of the attachment
-     **/
-    ObjectReference getObjectReference();
+  /**
+   * Gets the {@link ObjectReference primaryObjectReference} of the attachment.
+   *
+   * @return {@link ObjectReference primaryObjectReference} of the attachment
+   */
+  ObjectReference getObjectReference();
 
-    /**
-     * Gets the Channel on which the attachment was received.
-     *
-     * @return the channel
-     **/
-    String getChannel();
+  /**
+   * Gets the Channel on which the attachment was received.
+   *
+   * @return the channel
+   */
+  String getChannel();
 
-    /**
-     * Gets the classificationSummary of the attachment.
-     *
-     * @return the classification summary
-     */
-    ClassificationSummary getClassificationSummary();
+  /**
+   * Gets the classificationSummary of the attachment.
+   *
+   * @return the classification summary
+   */
+  ClassificationSummary getClassificationSummary();
 
-    /**
-     * Gets the time when the attachment was received.
-     *
-     * @return received Instant
-     */
-    Instant getReceived();
+  /**
+   * Gets the time when the attachment was received.
+   *
+   * @return received Instant
+   */
+  Instant getReceived();
 }

lib/taskana-core/src/main/java/pro/taskana/BaseQuery.java

@@ -6,112 +6,105 @@ import java.util.List;
  * Main query interface.
  *
  * @author EH
- * @param <T>
- *            specifies the return type of the follwing methods
- * @param <U>
- *            specifies the type of the enum used
+ * @param <T> specifies the return type of the follwing methods
+ * @param <U> specifies the type of the enum used
  */
 public interface BaseQuery<T, U extends Enum<U> & QueryColumnName> {
 
-    /**
-     * This method will return a list of defined {@link T} objects. In case of a TaskQuery, this method can throw a
-     * NotAuthorizedToQueryWorkbasketException.
-     *
-     * @return List containing elements of type T
-     */
-    List<T> list();
+  /**
+   * This method will return a list of defined {@link T} objects. In case of a TaskQuery, this
+   * method can throw a NotAuthorizedToQueryWorkbasketException.
+   *
+   * @return List containing elements of type T
+   */
+  List<T> list();
 
-    /**
-     * This method will return a list of defined {@link T} objects with specified offset and an limit. In case of a
-     * TaskQuery, this method can throw a NotAuthorizedToQueryWorkbasketException.
-     *
-     * @param offset
-     *            index of the first element which should be returned.
-     * @param limit
-     *            number of elements which should be returned beginning with offset.
-     * @return List containing elements of type T
-     */
-    List<T> list(int offset, int limit);
+  /**
+   * This method will return a list of defined {@link T} objects with specified offset and an limit.
+   * In case of a TaskQuery, this method can throw a NotAuthorizedToQueryWorkbasketException.
+   *
+   * @param offset index of the first element which should be returned.
+   * @param limit number of elements which should be returned beginning with offset.
+   * @return List containing elements of type T
+   */
+  List<T> list(int offset, int limit);
 
-    /**
-     * This method will return all currently existing values of a DB-Table once. The order of the returning values can
-     * be configured ASC oder DEC - DEFAULT at NULL is ASC. <br>
-     * All called orderBy()-Methods will be override. Just the current column-values will be ordered itself by the given
-     * direction.
-     *
-     * @param dbColumnName
-     *            column name of a existing DB Table.
-     * @param sortDirection
-     *            Determines whether the result is sorted in ascending or descending order. If sortDirection is null,
-     *            the result is sorted in ascending order
-     * @return a list of all existing values.
-     */
-    List<String> listValues(U dbColumnName, SortDirection sortDirection);
+  /**
+   * This method will return all currently existing values of a DB-Table once. The order of the
+   * returning values can be configured ASC oder DEC - DEFAULT at NULL is ASC. <br>
+   * All called orderBy()-Methods will be override. Just the current column-values will be ordered
+   * itself by the given direction.
+   *
+   * @param dbColumnName column name of a existing DB Table.
+   * @param sortDirection Determines whether the result is sorted in ascending or descending order.
+   *     If sortDirection is null, the result is sorted in ascending order
+   * @return a list of all existing values.
+   */
+  List<String> listValues(U dbColumnName, SortDirection sortDirection);
 
-    /**
-     * This method will return all results for page X with a size of Y of the current query.<br>
-     * Negative pageNumber/size will be changed to 1 or 0 and the last page might contains less elements. In case of a
-     * TaskQuery, this method can throw a NotAuthorizedToQueryWorkbasketException.
-     *
-     * @param pageNumber
-     *            current pagination page starting at 1.
-     * @param pageSize
-     *            amount of elements for this page.
-     * @return resulList for the current query starting at X and returning max Y elements.
-     */
-    default List<T> listPage(int pageNumber, int pageSize) {
-        int offset = (pageNumber < 1) ? 0 : ((pageNumber - 1) * pageSize);
-        int limit = (pageSize < 0) ? 0 : pageSize;
-        return list(offset, limit);
+  /**
+   * This method will return all results for page X with a size of Y of the current query.<br>
+   * Negative pageNumber/size will be changed to 1 or 0 and the last page might contains less
+   * elements. In case of a TaskQuery, this method can throw a
+   * NotAuthorizedToQueryWorkbasketException.
+   *
+   * @param pageNumber current pagination page starting at 1.
+   * @param pageSize amount of elements for this page.
+   * @return resulList for the current query starting at X and returning max Y elements.
+   */
+  default List<T> listPage(int pageNumber, int pageSize) {
+    int offset = (pageNumber < 1) ? 0 : ((pageNumber - 1) * pageSize);
+    int limit = (pageSize < 0) ? 0 : pageSize;
+    return list(offset, limit);
+  }
+
+  /**
+   * This method will return a single object of {@link T}. In case of a TaskQuery, this method can
+   * throw a NotAuthorizedToQueryWorkbasketException.
+   *
+   * @return T a single object of given Type.
+   */
+  T single();
+
+  /**
+   * Counting the amount of rows/results for the current query. This can be used for a pagination
+   * afterwards. In case of a TaskQuery, this method can throw a
+   * NotAuthorizedToQueryWorkbasketException.
+   *
+   * @return resultRowCount
+   */
+  long count();
+
+  default String[] toUpperCopy(String... source) {
+    if (source == null || source.length == 0) {
+      return null;
+    } else {
+      String[] target = new String[source.length];
+      for (int i = 0; i < source.length; i++) {
+        target[i] = source[i].toUpperCase();
+      }
+      return target;
+    }
+  }
+
+  /**
+   * Determines the sort direction.
+   *
+   * @author bbr
+   */
+  enum SortDirection {
+    ASCENDING("ASC"),
+    DESCENDING("DESC");
+
+    private final String sortDirection;
+
+    SortDirection(String sortDirection) {
+      this.sortDirection = sortDirection;
     }
 
-    /**
-     * This method will return a single object of {@link T}. In case of a TaskQuery, this method can throw a
-     * NotAuthorizedToQueryWorkbasketException.
-     *
-     * @return T a single object of given Type.
-     */
-    T single();
-
-    /**
-     * Counting the amount of rows/results for the current query. This can be used for a pagination afterwards. In case
-     * of a TaskQuery, this method can throw a NotAuthorizedToQueryWorkbasketException.
-     *
-     * @return resultRowCount
-     */
-    long count();
-
-    /**
-     * Determines the sort direction.
-     *
-     * @author bbr
-     */
-    enum SortDirection {
-        ASCENDING("ASC"),
-        DESCENDING("DESC");
-
-        private final String sortDirection;
-
-        SortDirection(String sortDirection) {
-            this.sortDirection = sortDirection;
-        }
-
-        @Override
-        public String toString() {
-            return sortDirection;
-        }
+    @Override
+    public String toString() {
+      return sortDirection;
     }
-
-    default String[] toUpperCopy(String... source) {
-        if (source == null || source.length == 0) {
-            return null;
-        } else {
-            String[] target = new String[source.length];
-            for (int i = 0; i < source.length; i++) {
-                target[i] = source[i].toUpperCase();
-            }
-            return target;
-        }
-    }
-
+  }
 }

lib/taskana-core/src/main/java/pro/taskana/BulkOperationResults.java

@@ -4,135 +4,132 @@ import java.util.ArrayList;
 import java.util.HashMap;
 import java.util.List;
 import java.util.Map;
-
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
 import pro.taskana.impl.util.LoggerUtils;
 
 /**
- * Returning type for a bulk db interaction with errors. This wrapper is storing them with a matching object ID.
+ * Returning type for a bulk db interaction with errors. This wrapper is storing them with a
+ * matching object ID.
  *
- * @param <K>
- *            unique keys for the logs.
- * @param <V>
- *            type of the stored informations
+ * @param <K> unique keys for the logs.
+ * @param <V> type of the stored informations
  */
 public class BulkOperationResults<K, V> {
 
-    private Map<K, V> errorMap = new HashMap<>();
-    private static final Logger LOGGER = LoggerFactory.getLogger(BulkOperationResults.class);
+  private static final Logger LOGGER = LoggerFactory.getLogger(BulkOperationResults.class);
+  private Map<K, V> errorMap = new HashMap<>();
 
-    /**
-     * Returning a list of current errors as map. If there are no errors the result will be empty.
-     *
-     * @return map of errors which can´t be null.
-     */
-    public Map<K, V> getErrorMap() {
-        return this.errorMap;
+  /**
+   * Returning a list of current errors as map. If there are no errors the result will be empty.
+   *
+   * @return map of errors which can´t be null.
+   */
+  public Map<K, V> getErrorMap() {
+    return this.errorMap;
+  }
+
+  /**
+   * Adding an appearing error to the map and list them by a unique ID as key. NULL keys will be
+   * ignored.
+   *
+   * @param objectId unique key of a entity.
+   * @param error occurred error of a interaction with the entity
+   * @return status of adding the values.
+   */
+  public boolean addError(K objectId, V error) {
+    boolean status = false;
+    try {
+      if (objectId != null) {
+        this.errorMap.put(objectId, error);
+        status = true;
+      }
+    } catch (Exception e) {
+      LOGGER.warn(
+          "Can´t add bulkoperation-error, because of a map failure. ID={}, error={} and current failure={}",
+          objectId,
+          error,
+          e);
+    }
+    return status;
+  }
+
+  /**
+   * Returning the status of a bulk-error-log.
+   *
+   * @return true if there are logged errors.
+   */
+  public boolean containsErrors() {
+    boolean isContainingErrors = false;
+    if (!this.errorMap.isEmpty()) {
+      isContainingErrors = true;
+    }
+    return isContainingErrors;
+  }
+
+  /**
+   * Returns the stored error for a unique ID or NULL if there is no error stored or ID invalid.
+   *
+   * @param idKey which is mapped with an error
+   * @return stored error for ID
+   */
+  public V getErrorForId(K idKey) {
+    V result = null;
+    if (idKey != null) {
+      result = this.errorMap.get(idKey);
+    }
+    return result;
+  }
+
+  /**
+   * Returns the IDs of the Object with failed requests.
+   *
+   * @return a List of IDs that could not be processed successfully.
+   */
+  public List<K> getFailedIds() {
+    return new ArrayList<>(this.errorMap.keySet());
+  }
+
+  /** Clearing the map - all entries will be removed. */
+  public void clearErrors() {
+    this.errorMap.clear();
+  }
+
+  /**
+   * Add all errors from another BulkOperationResult to this.
+   *
+   * @param log the other log
+   */
+  public void addAllErrors(BulkOperationResults<K, V> log) {
+    if (log != null && log.containsErrors()) {
+      List<K> failedIds = log.getFailedIds();
+      for (K id : failedIds) {
+        addError(id, log.getErrorForId(id));
+      }
+    }
+  }
+
+  /**
+   * Map from any exception type to Exception.
+   *
+   * @return map of errors which can´t be null.
+   */
+  public BulkOperationResults<K, Exception> mapBulkOperationResults() {
+    BulkOperationResults<K, Exception> bulkLogMapped = new BulkOperationResults<>();
+
+    List<K> failedIds = this.getFailedIds();
+    for (K id : failedIds) {
+      bulkLogMapped.addError(id, (Exception) this.getErrorForId(id));
     }
 
-    /**
-     * Adding an appearing error to the map and list them by a unique ID as key. NULL keys will be ignored.
-     *
-     * @param objectId
-     *            unique key of a entity.
-     * @param error
-     *            occurred error of a interaction with the entity
-     * @return status of adding the values.
-     */
-    public boolean addError(K objectId, V error) {
-        boolean status = false;
-        try {
-            if (objectId != null) {
-                this.errorMap.put(objectId, error);
-                status = true;
-            }
-        } catch (Exception e) {
-            LOGGER.warn(
-                "Can´t add bulkoperation-error, because of a map failure. ID={}, error={} and current failure={}",
-                objectId, error, e);
-        }
-        return status;
-    }
+    return bulkLogMapped;
+  }
 
-    /**
-     * Returning the status of a bulk-error-log.
-     *
-     * @return true if there are logged errors.
-     */
-    public boolean containsErrors() {
-        boolean isContainingErrors = false;
-        if (!this.errorMap.isEmpty()) {
-            isContainingErrors = true;
-        }
-        return isContainingErrors;
-    }
-
-    /**
-     * Returns the stored error for a unique ID or NULL if there is no error stored or ID invalid.
-     *
-     * @param idKey
-     *            which is mapped with an error
-     * @return stored error for ID
-     */
-    public V getErrorForId(K idKey) {
-        V result = null;
-        if (idKey != null) {
-            result = this.errorMap.get(idKey);
-        }
-        return result;
-    }
-
-    /**
-     * Returns the IDs of the Object with failed requests.
-     *
-     * @return a List of IDs that could not be processed successfully.
-     */
-    public List<K> getFailedIds() {
-        return new ArrayList<>(this.errorMap.keySet());
-    }
-
-    /**
-     * Clearing the map - all entries will be removed.
-     */
-    public void clearErrors() {
-        this.errorMap.clear();
-    }
-
-    /**
-     * Add all errors from another BulkOperationResult to this.
-     *
-     * @param log
-     *            the other log
-     */
-    public void addAllErrors(BulkOperationResults<K, V> log) {
-        if (log != null && log.containsErrors()) {
-            List<K> failedIds = log.getFailedIds();
-            for (K id : failedIds) {
-                addError(id, log.getErrorForId(id));
-            }
-        }
-    }
-
-    /**
-     * Map from any exception type to Exception.
-     *
-     * @return map of errors which can´t be null.
-     */
-    public BulkOperationResults<K, Exception> mapBulkOperationResults() {
-        BulkOperationResults<K, Exception> bulkLogMapped = new BulkOperationResults<>();
-
-        List<K> failedIds = this.getFailedIds();
-        for (K id : failedIds) {
-            bulkLogMapped.addError(id, (Exception) this.getErrorForId(id));
-        }
-
-        return bulkLogMapped;
-    }
-
-    @Override
-    public String toString() {
-        return "BulkOperationResults [BulkOperationResults= " + LoggerUtils.mapToString(this.errorMap) + "]";
-    }
+  @Override
+  public String toString() {
+    return "BulkOperationResults [BulkOperationResults= "
+        + LoggerUtils.mapToString(this.errorMap)
+        + "]";
+  }
 }

lib/taskana-core/src/main/java/pro/taskana/CallbackState.java

@@ -1,8 +1,12 @@
 package pro.taskana;
 
 /**
- * This enum contains all status of synchronization between a taskana task and a task in a remote system.
+ * This enum contains all status of synchronization between a taskana task and a task in a remote
+ * system.
  */
 public enum CallbackState {
-    NONE, CALLBACK_PROCESSING_REQUIRED, CLAIMED, CALLBACK_PROCESSING_COMPLETED
+  NONE,
+  CALLBACK_PROCESSING_REQUIRED,
+  CLAIMED,
+  CALLBACK_PROCESSING_COMPLETED
 }

lib/taskana-core/src/main/java/pro/taskana/Classification.java

@@ -1,200 +1,183 @@
 package pro.taskana;
 
-import java.time.Instant;
-
 import com.fasterxml.jackson.databind.annotation.JsonDeserialize;
+import java.time.Instant;
 
 import pro.taskana.impl.ClassificationImpl;
 
-/**
- * Interface used to specify the Classification-Model.
- */
+/** Interface used to specify the Classification-Model. */
 @JsonDeserialize(as = ClassificationImpl.class)
 public interface Classification extends ClassificationSummary {
 
-    /**
-     * Set/Change a reference to the current parent classification via ID. EMPTY if there is no parent.
-     *
-     * @param parentId
-     *            The ID of the parent classification.
-     */
-    void setParentId(String parentId);
+  /**
+   * Set/Change a reference to the current parent classification via ID. EMPTY if there is no
+   * parent.
+   *
+   * @param parentId The ID of the parent classification.
+   */
+  void setParentId(String parentId);
 
-    /**
-     * Set/Change a reference to the current parent classification via key. EMPTY if there is no parent.
-     *
-     * @param parentKey
-     *            The key of the parent classification.
-     */
-    void setParentKey(String parentKey);
+  /**
+   * Set/Change a reference to the current parent classification via key. EMPTY if there is no
+   * parent.
+   *
+   * @param parentKey The key of the parent classification.
+   */
+  void setParentKey(String parentKey);
 
-    /**
-     * Set/Change the category of this classification.
-     *
-     * @param category
-     *            The category of the classification.
-     */
-    void setCategory(String category);
+  /**
+   * Set/Change the category of this classification.
+   *
+   * @param category The category of the classification.
+   */
+  void setCategory(String category);
 
-    /**
-     * Get the current domain-name of this classification.
-     *
-     * @return domain name
-     */
-    String getDomain();
+  /**
+   * Get the current domain-name of this classification.
+   *
+   * @return domain name
+   */
+  String getDomain();
 
-    /**
-     * Get a flag if the classification if currently valid in the used domain.
-     *
-     * @return isValidInDomain - flag
-     */
-    Boolean getIsValidInDomain();
+  /**
+   * Get a flag if the classification if currently valid in the used domain.
+   *
+   * @return isValidInDomain - flag
+   */
+  Boolean getIsValidInDomain();
 
-    /**
-     * Set/Change the flag which marks the classification as valid/invalid in the currently used domain.
-     *
-     * @param isValidInDomain
-     *            - flag
-     */
-    void setIsValidInDomain(Boolean isValidInDomain);
+  /**
+   * Set/Change the flag which marks the classification as valid/invalid in the currently used
+   * domain.
+   *
+   * @param isValidInDomain - flag
+   */
+  void setIsValidInDomain(Boolean isValidInDomain);
 
-    /**
-     * Get the timestamp when this classification was as created.
-     *
-     * @return created as instant
-     */
-    Instant getCreated();
+  /**
+   * Get the timestamp when this classification was as created.
+   *
+   * @return created as instant
+   */
+  Instant getCreated();
 
-    /**
-     * Get the timestamp when this classification was as modified the last time.
-     *
-     * @return modified as instant
-     */
-    Instant getModified();
+  /**
+   * Get the timestamp when this classification was as modified the last time.
+   *
+   * @return modified as instant
+   */
+  Instant getModified();
 
-    /**
-     * Set/Change the classification name.
-     *
-     * @param name
-     *            the name of the Classification
-     */
-    void setName(String name);
+  /**
+   * Set/Change the classification name.
+   *
+   * @param name the name of the Classification
+   */
+  void setName(String name);
 
-    /**
-     * Get the description of a classification.
-     *
-     * @return description
-     */
-    String getDescription();
+  /**
+   * Get the description of a classification.
+   *
+   * @return description
+   */
+  String getDescription();
 
-    /**
-     * Set/Change the classification description.
-     *
-     * @param description
-     *            the description of the Classification
-     */
-    void setDescription(String description);
+  /**
+   * Set/Change the classification description.
+   *
+   * @param description the description of the Classification
+   */
+  void setDescription(String description);
 
-    /**
-     * Set/Change the numeric priority of a classification.
-     *
-     * @param priority
-     *            the Priority of the Classification
-     */
-    void setPriority(int priority);
+  /**
+   * Set/Change the numeric priority of a classification.
+   *
+   * @param priority the Priority of the Classification
+   */
+  void setPriority(int priority);
 
-    /**
-     * Set/Change the service level.
-     *
-     * @param serviceLevel
-     *            the service level. Must be a String in ISO-8601 duration format. See the parse() method of
-     *            {@code Duration} for details.
-     */
-    void setServiceLevel(String serviceLevel);
+  /**
+   * Set/Change the service level.
+   *
+   * @param serviceLevel the service level. Must be a String in ISO-8601 duration format. See the
+   *     parse() method of {@code Duration} for details.
+   */
+  void setServiceLevel(String serviceLevel);
 
-    /**
-     * Get the logical name of the associated application entry point.
-     *
-     * @return applicationEntryPoint
-     */
-    String getApplicationEntryPoint();
+  /**
+   * Get the logical name of the associated application entry point.
+   *
+   * @return applicationEntryPoint
+   */
+  String getApplicationEntryPoint();
 
-    /**
-     * Set the logical name of the associated application entry point.
-     *
-     * @param applicationEntryPoint
-     *            The application entry point
-     */
-    void setApplicationEntryPoint(String applicationEntryPoint);
+  /**
+   * Set the logical name of the associated application entry point.
+   *
+   * @param applicationEntryPoint The application entry point
+   */
+  void setApplicationEntryPoint(String applicationEntryPoint);
 
-    /**
-     * Set/Change the 1. custom-attribute.
-     *
-     * @param custom1
-     *            the first custom attribute
-     */
-    void setCustom1(String custom1);
+  /**
+   * Set/Change the 1. custom-attribute.
+   *
+   * @param custom1 the first custom attribute
+   */
+  void setCustom1(String custom1);
 
-    /**
-     * Set/Change the 2. custom-attribute.
-     *
-     * @param custom2
-     *            the second custom attribute
-     */
-    void setCustom2(String custom2);
+  /**
+   * Set/Change the 2. custom-attribute.
+   *
+   * @param custom2 the second custom attribute
+   */
+  void setCustom2(String custom2);
 
-    /**
-     * Set/Change the 3. custom-attribute.
-     *
-     * @param custom3
-     *            the third custom attribute
-     */
-    void setCustom3(String custom3);
+  /**
+   * Set/Change the 3. custom-attribute.
+   *
+   * @param custom3 the third custom attribute
+   */
+  void setCustom3(String custom3);
 
-    /**
-     * Set/Change the 4. custom-attribute.
-     *
-     * @param custom4
-     *            the fourth custom attribute
-     */
-    void setCustom4(String custom4);
+  /**
+   * Set/Change the 4. custom-attribute.
+   *
+   * @param custom4 the fourth custom attribute
+   */
+  void setCustom4(String custom4);
 
-    /**
-     * Set/Change the 5. custom-attribute.
-     *
-     * @param custom5
-     *            the fifth custom attribute
-     */
-    void setCustom5(String custom5);
+  /**
+   * Set/Change the 5. custom-attribute.
+   *
+   * @param custom5 the fifth custom attribute
+   */
+  void setCustom5(String custom5);
 
-    /**
-     * Set/Change the 6. custom-attribute.
-     *
-     * @param custom6
-     *            the sixth custom attribute
-     */
-    void setCustom6(String custom6);
+  /**
+   * Set/Change the 6. custom-attribute.
+   *
+   * @param custom6 the sixth custom attribute
+   */
+  void setCustom6(String custom6);
 
-    /**
-     * Set/Change the 7. custom-attribute.
-     *
-     * @param custom7
-     *            the seventh custom attribute
-     */
-    void setCustom7(String custom7);
+  /**
+   * Set/Change the 7. custom-attribute.
+   *
+   * @param custom7 the seventh custom attribute
+   */
+  void setCustom7(String custom7);
 
-    /**
-     * Set/Change the 8. custom-attribute.
-     *
-     * @param custom8
-     *            the eight custom attribute
-     */
-    void setCustom8(String custom8);
+  /**
+   * Set/Change the 8. custom-attribute.
+   *
+   * @param custom8 the eight custom attribute
+   */
+  void setCustom8(String custom8);
 
-    /**
-     * Return a summary of the current Classification.
-     *
-     * @return the ClassificationSummary object for the current classification
-     */
-    ClassificationSummary asSummary();
+  /**
+   * Return a summary of the current Classification.
+   *
+   * @return the ClassificationSummary object for the current classification
+   */
+  ClassificationSummary asSummary();
 }

lib/taskana-core/src/main/java/pro/taskana/ClassificationQuery.java

@@ -2,302 +2,269 @@ package pro.taskana;
 
 import pro.taskana.exceptions.InvalidArgumentException;
 
-/**
- * ClassificationQuery for generating dynamic sql.
- */
-public interface ClassificationQuery extends BaseQuery<ClassificationSummary, ClassificationQueryColumnName> {
+/** ClassificationQuery for generating dynamic sql. */
+public interface ClassificationQuery
+    extends BaseQuery<ClassificationSummary, ClassificationQueryColumnName> {
 
-    /**
-     * Add your key to your query.
-     *
-     * @param key
-     *            as String
-     * @return the query
-     */
-    ClassificationQuery keyIn(String... key);
+  /**
+   * Add your key to your query.
+   *
+   * @param key as String
+   * @return the query
+   */
+  ClassificationQuery keyIn(String... key);
 
-    /**
-     * Add your Id to your query.
-     *
-     * @param id
-     *            as String
-     * @return the query
-     */
-    ClassificationQuery idIn(String... id);
+  /**
+   * Add your Id to your query.
+   *
+   * @param id as String
+   * @return the query
+   */
+  ClassificationQuery idIn(String... id);
 
-    /**
-     * Add your parentIds to your query.
-     *
-     * @param parentId
-     *            as an array of Strings
-     * @return the query
-     */
-    ClassificationQuery parentIdIn(String... parentId);
+  /**
+   * Add your parentIds to your query.
+   *
+   * @param parentId as an array of Strings
+   * @return the query
+   */
+  ClassificationQuery parentIdIn(String... parentId);
 
-    /**
-     * Add your parentKeys to your query.
-     *
-     * @param parentKey
-     *            as an array of Strings
-     * @return the query
-     */
-    ClassificationQuery parentKeyIn(String... parentKey);
+  /**
+   * Add your parentKeys to your query.
+   *
+   * @param parentKey as an array of Strings
+   * @return the query
+   */
+  ClassificationQuery parentKeyIn(String... parentKey);
 
-    /**
-     * Add your category to your query.
-     *
-     * @param category
-     *            as String
-     * @return the query
-     */
-    ClassificationQuery categoryIn(String... category);
+  /**
+   * Add your category to your query.
+   *
+   * @param category as String
+   * @return the query
+   */
+  ClassificationQuery categoryIn(String... category);
 
-    /**
-     * Add your type to your query.
-     *
-     * @param type
-     *            as String
-     * @return the query
-     */
-    ClassificationQuery typeIn(String... type);
+  /**
+   * Add your type to your query.
+   *
+   * @param type as String
+   * @return the query
+   */
+  ClassificationQuery typeIn(String... type);
 
-    /**
-     * Add your domains to your query which are used as filter.
-     *
-     * @param domain
-     *            or domains for filtering.
-     * @return the query
-     */
-    ClassificationQuery domainIn(String... domain);
+  /**
+   * Add your domains to your query which are used as filter.
+   *
+   * @param domain or domains for filtering.
+   * @return the query
+   */
+  ClassificationQuery domainIn(String... domain);
 
-    /**
-     * Add to your query if the Classification shall be valid in its domain.
-     *
-     * @param validInDomain
-     *            a simple flag showing if domain is valid
-     * @return the query
-     */
-    ClassificationQuery validInDomainEquals(Boolean validInDomain);
+  /**
+   * Add to your query if the Classification shall be valid in its domain.
+   *
+   * @param validInDomain a simple flag showing if domain is valid
+   * @return the query
+   */
+  ClassificationQuery validInDomainEquals(Boolean validInDomain);
 
-    /**
-     * Add your created-Dates to your query.
-     *
-     * @param createdIn
-     *            the {@link TimeInterval} within which the searched-for classifications were created.
-     * @return the query
-     */
-    ClassificationQuery createdWithin(TimeInterval... createdIn);
+  /**
+   * Add your created-Dates to your query.
+   *
+   * @param createdIn the {@link TimeInterval} within which the searched-for classifications were
+   *     created.
+   * @return the query
+   */
+  ClassificationQuery createdWithin(TimeInterval... createdIn);
 
-    /**
-     * Add your modified-Dates to your query.
-     *
-     * @param modifiedIn
-     *            the {@link TimeInterval} within which the searched-for classifications were modified the last time.
-     * @return the query
-     */
-    ClassificationQuery modifiedWithin(TimeInterval... modifiedIn);
+  /**
+   * Add your modified-Dates to your query.
+   *
+   * @param modifiedIn the {@link TimeInterval} within which the searched-for classifications were
+   *     modified the last time.
+   * @return the query
+   */
+  ClassificationQuery modifiedWithin(TimeInterval... modifiedIn);
 
-    /**
-     * Add your name to your query.
-     *
-     * @param nameIn
-     *            as String
-     * @return the query
-     */
-    ClassificationQuery nameIn(String... nameIn);
+  /**
+   * Add your name to your query.
+   *
+   * @param nameIn as String
+   * @return the query
+   */
+  ClassificationQuery nameIn(String... nameIn);
 
-    /**
-     * Add your name to your query. It will be compared in SQL with an LIKE.
-     *
-     * @param nameLike
-     *            as String
-     * @return the query
-     */
-    ClassificationQuery nameLike(String... nameLike);
+  /**
+   * Add your name to your query. It will be compared in SQL with an LIKE.
+   *
+   * @param nameLike as String
+   * @return the query
+   */
+  ClassificationQuery nameLike(String... nameLike);
 
-    /**
-     * Add your description to your query. It will be compared in SQL with an LIKE. If you use a wildcard like % then it
-     * will be transmitted to the database.
-     *
-     * @param descriptionLike
-     *            your description
-     * @return the query
-     */
-    ClassificationQuery descriptionLike(String descriptionLike);
+  /**
+   * Add your description to your query. It will be compared in SQL with an LIKE. If you use a
+   * wildcard like % then it will be transmitted to the database.
+   *
+   * @param descriptionLike your description
+   * @return the query
+   */
+  ClassificationQuery descriptionLike(String descriptionLike);
 
-    /**
-     * Add your priority to your query.
-     *
-     * @param priorities
-     *            as integers
-     * @return the query
-     */
-    ClassificationQuery priorityIn(int... priorities);
+  /**
+   * Add your priority to your query.
+   *
+   * @param priorities as integers
+   * @return the query
+   */
+  ClassificationQuery priorityIn(int... priorities);
 
-    /**
-     * Add your serviceLevel to your query.
-     *
-     * @param serviceLevelIn
-     *            as String
-     * @return the query
-     */
-    ClassificationQuery serviceLevelIn(String... serviceLevelIn);
+  /**
+   * Add your serviceLevel to your query.
+   *
+   * @param serviceLevelIn as String
+   * @return the query
+   */
+  ClassificationQuery serviceLevelIn(String... serviceLevelIn);
 
-    /**
-     * Add your serviceLevel to your query. It will be compared in SQL with an LIKE.
-     *
-     * @param serviceLevelLike
-     *            as String
-     * @return the query
-     */
-    ClassificationQuery serviceLevelLike(String... serviceLevelLike);
+  /**
+   * Add your serviceLevel to your query. It will be compared in SQL with an LIKE.
+   *
+   * @param serviceLevelLike as String
+   * @return the query
+   */
+  ClassificationQuery serviceLevelLike(String... serviceLevelLike);
 
-    /**
-     * Add your applicationEntryPoint to your query.
-     *
-     * @param applicationEntryPointIn
-     *            name of the applications entrypoint
-     * @return the query
-     */
-    ClassificationQuery applicationEntryPointIn(String... applicationEntryPointIn);
+  /**
+   * Add your applicationEntryPoint to your query.
+   *
+   * @param applicationEntryPointIn name of the applications entrypoint
+   * @return the query
+   */
+  ClassificationQuery applicationEntryPointIn(String... applicationEntryPointIn);
 
-    /**
-     * Add your applicationEntryPoint to your query. It will be compared in SQL with an LIKE.
-     *
-     * @param applicationEntryPointLike
-     *            name of the applications entrypoint
-     * @return the query
-     */
-    ClassificationQuery applicationEntryPointLike(String... applicationEntryPointLike);
+  /**
+   * Add your applicationEntryPoint to your query. It will be compared in SQL with an LIKE.
+   *
+   * @param applicationEntryPointLike name of the applications entrypoint
+   * @return the query
+   */
+  ClassificationQuery applicationEntryPointLike(String... applicationEntryPointLike);
 
-    /**
-     * Add a custom to your query.
-     *
-     * @param num
-     *            the number of the custom as String (eg "4")
-     * @param customIn
-     *            filter for this custom
-     * @return the query
-     * @throws InvalidArgumentException
-     *            when the number of the custom is incorrect.
-     */
-    ClassificationQuery customAttributeIn(String num, String... customIn) throws InvalidArgumentException;
+  /**
+   * Add a custom to your query.
+   *
+   * @param num the number of the custom as String (eg "4")
+   * @param customIn filter for this custom
+   * @return the query
+   * @throws InvalidArgumentException when the number of the custom is incorrect.
+   */
+  ClassificationQuery customAttributeIn(String num, String... customIn)
+      throws InvalidArgumentException;
 
-    /**
-     * Add a custom to your query.
-     *
-     * @param num
-     *            the number of the custom as String (eg "4")
-     * @param customLike
-     *            filter for this custom with a LIKE-query
-     * @return the query
-     * @throws InvalidArgumentException
-     *            when the number of the custom is incorrect.
-     */
-    ClassificationQuery customAttributeLike(String num, String... customLike) throws InvalidArgumentException;
+  /**
+   * Add a custom to your query.
+   *
+   * @param num the number of the custom as String (eg "4")
+   * @param customLike filter for this custom with a LIKE-query
+   * @return the query
+   * @throws InvalidArgumentException when the number of the custom is incorrect.
+   */
+  ClassificationQuery customAttributeLike(String num, String... customLike)
+      throws InvalidArgumentException;
 
-    /**
-     * Sort the query result by key.
-     *
-     * @param sortDirection
-     *            Determines whether the result is sorted in ascending or descending order. If sortDirection is null,
-     *            the result is sorted in ascending order
-     * @return the query
-     */
-    ClassificationQuery orderByKey(SortDirection sortDirection);
+  /**
+   * Sort the query result by key.
+   *
+   * @param sortDirection Determines whether the result is sorted in ascending or descending order.
+   *     If sortDirection is null, the result is sorted in ascending order
+   * @return the query
+   */
+  ClassificationQuery orderByKey(SortDirection sortDirection);
 
-    /**
-     * Sort the query result by the parent classification ID.
-     *
-     * @param sortDirection
-     *            Determines whether the result is sorted in ascending or descending order. If sortDirection is null,
-     *            the result is sorted in ascending order
-     * @return the query
-     */
-    ClassificationQuery orderByParentId(SortDirection sortDirection);
+  /**
+   * Sort the query result by the parent classification ID.
+   *
+   * @param sortDirection Determines whether the result is sorted in ascending or descending order.
+   *     If sortDirection is null, the result is sorted in ascending order
+   * @return the query
+   */
+  ClassificationQuery orderByParentId(SortDirection sortDirection);
 
-    /**
-     * Sort the query result by the parent classification key.
-     *
-     * @param sortDirection
-     *            Determines whether the result is sorted in ascending or descending order. If sortDirection is null,
-     *            the result is sorted in ascending order
-     * @return the query
-     */
-    ClassificationQuery orderByParentKey(SortDirection sortDirection);
+  /**
+   * Sort the query result by the parent classification key.
+   *
+   * @param sortDirection Determines whether the result is sorted in ascending or descending order.
+   *     If sortDirection is null, the result is sorted in ascending order
+   * @return the query
+   */
+  ClassificationQuery orderByParentKey(SortDirection sortDirection);
 
-    /**
-     * Sort the query result by category.
-     *
-     * @param sortDirection
-     *            Determines whether the result is sorted in ascending or descending order. If sortDirection is null,
-     *            the result is sorted in ascending order
-     * @return the query
-     */
-    ClassificationQuery orderByCategory(SortDirection sortDirection);
+  /**
+   * Sort the query result by category.
+   *
+   * @param sortDirection Determines whether the result is sorted in ascending or descending order.
+   *     If sortDirection is null, the result is sorted in ascending order
+   * @return the query
+   */
+  ClassificationQuery orderByCategory(SortDirection sortDirection);
 
-    /**
-     * Sort the query result by domain.
-     *
-     * @param sortDirection
-     *            Determines whether the result is sorted in ascending or descending order. If sortDirection is null,
-     *            the result is sorted in ascending order
-     * @return the query
-     */
-    ClassificationQuery orderByDomain(SortDirection sortDirection);
+  /**
+   * Sort the query result by domain.
+   *
+   * @param sortDirection Determines whether the result is sorted in ascending or descending order.
+   *     If sortDirection is null, the result is sorted in ascending order
+   * @return the query
+   */
+  ClassificationQuery orderByDomain(SortDirection sortDirection);
 
-    /**
-     * Sort the query result by name.
-     *
-     * @param sortDirection
-     *            Determines whether the result is sorted in ascending or descending order. If sortDirection is null,
-     *            the result is sorted in ascending order
-     * @return the query
-     */
-    ClassificationQuery orderByName(SortDirection sortDirection);
+  /**
+   * Sort the query result by name.
+   *
+   * @param sortDirection Determines whether the result is sorted in ascending or descending order.
+   *     If sortDirection is null, the result is sorted in ascending order
+   * @return the query
+   */
+  ClassificationQuery orderByName(SortDirection sortDirection);
 
-    /**
-     * Sort the query result by service level.
-     *
-     * @param sortDirection
-     *            Determines whether the result is sorted in ascending or descending order. If sortDirection is null,
-     *            the result is sorted in ascending order
-     * @return the query
-     */
-    ClassificationQuery orderByServiceLevel(SortDirection sortDirection);
+  /**
+   * Sort the query result by service level.
+   *
+   * @param sortDirection Determines whether the result is sorted in ascending or descending order.
+   *     If sortDirection is null, the result is sorted in ascending order
+   * @return the query
+   */
+  ClassificationQuery orderByServiceLevel(SortDirection sortDirection);
 
-    /**
-     * Sort the query result by priority.
-     *
-     * @param sortDirection
-     *            Determines whether the result is sorted in ascending or descending order. If sortDirection is null,
-     *            the result is sorted in ascending order
-     * @return the query
-     */
-    ClassificationQuery orderByPriority(SortDirection sortDirection);
+  /**
+   * Sort the query result by priority.
+   *
+   * @param sortDirection Determines whether the result is sorted in ascending or descending order.
+   *     If sortDirection is null, the result is sorted in ascending order
+   * @return the query
+   */
+  ClassificationQuery orderByPriority(SortDirection sortDirection);
 
-    /**
-     * Sort the query result by the application entry point name.
-     *
-     * @param sortDirection
-     *            Determines whether the result is sorted in ascending or descending order. If sortDirection is null,
-     *            the result is sorted in ascending order
-     * @return the query
-     */
-    ClassificationQuery orderByApplicationEntryPoint(SortDirection sortDirection);
-
-    /**
-     * Sort the query result by a custom.
-     *
-     * @param num
-     *            the number of the custom as String (eg "4")
-     * @param sortDirection
-     *            Determines whether the result is sorted in ascending or descending order. If sortDirection is null,
-     *            the result is sorted in ascending order
-     * @return the query
-     * @throws InvalidArgumentException
-     *            when the number of the custom is incorrect.
-     */
-    ClassificationQuery orderByCustomAttribute(String num, SortDirection sortDirection) throws InvalidArgumentException;
+  /**
+   * Sort the query result by the application entry point name.
+   *
+   * @param sortDirection Determines whether the result is sorted in ascending or descending order.
+   *     If sortDirection is null, the result is sorted in ascending order
+   * @return the query
+   */
+  ClassificationQuery orderByApplicationEntryPoint(SortDirection sortDirection);
 
+  /**
+   * Sort the query result by a custom.
+   *
+   * @param num the number of the custom as String (eg "4")
+   * @param sortDirection Determines whether the result is sorted in ascending or descending order.
+   *     If sortDirection is null, the result is sorted in ascending order
+   * @return the query
+   * @throws InvalidArgumentException when the number of the custom is incorrect.
+   */
+  ClassificationQuery orderByCustomAttribute(String num, SortDirection sortDirection)
+      throws InvalidArgumentException;
 }

lib/taskana-core/src/main/java/pro/taskana/ClassificationQueryColumnName.java

@@ -1,42 +1,44 @@
 package pro.taskana;
 
 /**
- * Enum containing the column names for @see pro.taskana.mappings.QueryMapper#queryClassificationColumnValues(pro.taskana.impl.ClassificationQueryImpl).
+ * Enum containing the column names for @see
+ * pro.taskana.mappings.QueryMapper#queryClassificationColumnValues(pro.taskana.impl.ClassificationQueryImpl).
  *
  * @author jsa
  */
 public enum ClassificationQueryColumnName implements QueryColumnName {
-    ID("id"),
-    KEY("key"),
-    PARENT_ID("parent_id"),
-    PARENT_KEY("parent_key"),
-    CATEGORY("category"),
-    TYPE("type"),
-    DOMAIN("domain"),
-    VALID_IN_DOMAIN("valid_in_domain"),
-    CREATED("created"),
-    MODIFIED("modified"),
-    NAME("name"),
-    DESCRIPTION("description"),
-    PRIORITY("priority"),
-    SERVICELEVEL("serviceLevel"),
-    APPLICATION_ENTRY_POINT("application_entry_point"),
-    CUSTOM_1("custom_1"),
-    CUSTOM_2("custom_2"),
-    CUSTOM_3("custom_3"),
-    CUSTOM_4("custom_4"),
-    CUSTOM_5("custom_5"),
-    CUSTOM_6("custom_6"),
-    CUSTOM_7("custom_7"),
-    CUSTOM_8("custom_8");
+  ID("id"),
+  KEY("key"),
+  PARENT_ID("parent_id"),
+  PARENT_KEY("parent_key"),
+  CATEGORY("category"),
+  TYPE("type"),
+  DOMAIN("domain"),
+  VALID_IN_DOMAIN("valid_in_domain"),
+  CREATED("created"),
+  MODIFIED("modified"),
+  NAME("name"),
+  DESCRIPTION("description"),
+  PRIORITY("priority"),
+  SERVICELEVEL("serviceLevel"),
+  APPLICATION_ENTRY_POINT("application_entry_point"),
+  CUSTOM_1("custom_1"),
+  CUSTOM_2("custom_2"),
+  CUSTOM_3("custom_3"),
+  CUSTOM_4("custom_4"),
+  CUSTOM_5("custom_5"),
+  CUSTOM_6("custom_6"),
+  CUSTOM_7("custom_7"),
+  CUSTOM_8("custom_8");
 
-    private String name;
-    ClassificationQueryColumnName(String name) {
-        this.name = name;
-    }
+  private String name;
 
-    @Override
-    public String toString() {
-        return name;
-    }
+  ClassificationQueryColumnName(String name) {
+    this.name = name;
+  }
+
+  @Override
+  public String toString() {
+    return name;
+  }
 }

lib/taskana-core/src/main/java/pro/taskana/ClassificationService.java

@@ -8,125 +8,111 @@ import pro.taskana.exceptions.DomainNotFoundException;
 import pro.taskana.exceptions.InvalidArgumentException;
 import pro.taskana.exceptions.NotAuthorizedException;
 
-/**
- * This class manages the classifications.
- */
+/** This class manages the classifications. */
 public interface ClassificationService {
 
-    /**
-     * Get the Classification for key and domain. If there's no Classification in the given domain, return the
-     * Classification from the master domain.
-     *
-     * @param key
-     *            the key of the searched-for classifications
-     * @param domain
-     *            the domain of the searched-for classifications
-     * @return If exist: domain-specific classification, else master classification
-     * @throws ClassificationNotFoundException
-     *             if no classification is found that matches the key either in domain or in the master domain.
-     */
-    Classification getClassification(String key, String domain) throws ClassificationNotFoundException;
+  /**
+   * Get the Classification for key and domain. If there's no Classification in the given domain,
+   * return the Classification from the master domain.
+   *
+   * @param key the key of the searched-for classifications
+   * @param domain the domain of the searched-for classifications
+   * @return If exist: domain-specific classification, else master classification
+   * @throws ClassificationNotFoundException if no classification is found that matches the key
+   *     either in domain or in the master domain.
+   */
+  Classification getClassification(String key, String domain)
+      throws ClassificationNotFoundException;
 
-    /**
-     * Get the Classification by id.
-     *
-     * @param id
-     *            the id of the searched-for classifications
-     * @return the classification identified by id
-     * @throws ClassificationNotFoundException
-     *             if no classification is found that matches the id.
-     */
-    Classification getClassification(String id) throws ClassificationNotFoundException;
+  /**
+   * Get the Classification by id.
+   *
+   * @param id the id of the searched-for classifications
+   * @return the classification identified by id
+   * @throws ClassificationNotFoundException if no classification is found that matches the id.
+   */
+  Classification getClassification(String id) throws ClassificationNotFoundException;
 
-    /**
-     * Delete a classification with all child classifications.
-     *
-     * @param id
-     *            the id of the searched-for classifications
-     * @throws ClassificationInUseException
-     *             if there are Task existing, which refer to this classification.
-     * @throws ClassificationNotFoundException
-     *             if for an domain no classification specification is found.
-     * @throws NotAuthorizedException
-     *             if the current user is not member of role BUSINESS_ADMIN or ADMIN
-     */
-    void deleteClassification(String id)
-        throws ClassificationInUseException, ClassificationNotFoundException, NotAuthorizedException;
+  /**
+   * Delete a classification with all child classifications.
+   *
+   * @param id the id of the searched-for classifications
+   * @throws ClassificationInUseException if there are Task existing, which refer to this
+   *     classification.
+   * @throws ClassificationNotFoundException if for an domain no classification specification is
+   *     found.
+   * @throws NotAuthorizedException if the current user is not member of role BUSINESS_ADMIN or
+   *     ADMIN
+   */
+  void deleteClassification(String id)
+      throws ClassificationInUseException, ClassificationNotFoundException, NotAuthorizedException;
 
-    /**
-     * Delete a classification with all child classifications.
-     *
-     * @param classificationKey
-     *            the key of the classification you want to delete.
-     * @param domain
-     *            the domains for which you want to delete the classification. if "", the function tries to delete the
-     *            "master domain" classification and any other classification with this key.
-     * @throws ClassificationInUseException
-     *             if there are Task existing, which refer to this classification.
-     * @throws ClassificationNotFoundException
-     *             if for an domain no classification specification is found.
-     * @throws NotAuthorizedException
-     *             if the current user is not member of role BUSINESS_ADMIN or ADMIN
-     */
-    void deleteClassification(String classificationKey, String domain)
-        throws ClassificationInUseException, ClassificationNotFoundException, NotAuthorizedException;
+  /**
+   * Delete a classification with all child classifications.
+   *
+   * @param classificationKey the key of the classification you want to delete.
+   * @param domain the domains for which you want to delete the classification. if "", the function
+   *     tries to delete the "master domain" classification and any other classification with this
+   *     key.
+   * @throws ClassificationInUseException if there are Task existing, which refer to this
+   *     classification.
+   * @throws ClassificationNotFoundException if for an domain no classification specification is
+   *     found.
+   * @throws NotAuthorizedException if the current user is not member of role BUSINESS_ADMIN or
+   *     ADMIN
+   */
+  void deleteClassification(String classificationKey, String domain)
+      throws ClassificationInUseException, ClassificationNotFoundException, NotAuthorizedException;
 
-    /**
-     * Persists a new classification after adding default values. <br >
-     * The classification will be added to master-domain, too - if not already existing.
-     *
-     * @param classification
-     *            the classification to insert
-     * @return classification which is persisted with unique ID.
-     * @throws ClassificationAlreadyExistException
-     *             when the classification does already exists at the given domain.
-     * @throws NotAuthorizedException
-     *             if the current user is not member of role BUSINESS_ADMIN or ADMIN
-     * @throws DomainNotFoundException
-     *             if the domain does not exist in the configuration
-     * @throws InvalidArgumentException
-     *             if the ServiceLevel property does not comply with the ISO 8601 specification
-     */
-    Classification createClassification(Classification classification)
-        throws ClassificationAlreadyExistException, NotAuthorizedException,
-        DomainNotFoundException, InvalidArgumentException;
+  /**
+   * Persists a new classification after adding default values. <br>
+   * The classification will be added to master-domain, too - if not already existing.
+   *
+   * @param classification the classification to insert
+   * @return classification which is persisted with unique ID.
+   * @throws ClassificationAlreadyExistException when the classification does already exists at the
+   *     given domain.
+   * @throws NotAuthorizedException if the current user is not member of role BUSINESS_ADMIN or
+   *     ADMIN
+   * @throws DomainNotFoundException if the domain does not exist in the configuration
+   * @throws InvalidArgumentException if the ServiceLevel property does not comply with the ISO 8601
+   *     specification
+   */
+  Classification createClassification(Classification classification)
+      throws ClassificationAlreadyExistException, NotAuthorizedException, DomainNotFoundException,
+          InvalidArgumentException;
 
-    /**
-     * Updates a Classification.
-     *
-     * @param classification
-     *            the Classification to update
-     * @return the updated Classification.
-     * @throws ClassificationNotFoundException
-     *             when the classification OR it´s parent does not exist.
-     * @throws NotAuthorizedException
-     *             when the caller got no ADMIN or BUSINESS_ADMIN permissions.
-     * @throws ConcurrencyException
-     *             when the Classification was modified meanwhile and is not latest anymore.
-     * @throws InvalidArgumentException
-     *             if the ServiceLevel property does not comply with the ISO 8601 specification
-     */
-    Classification updateClassification(Classification classification)
-        throws ClassificationNotFoundException, NotAuthorizedException, ConcurrencyException, InvalidArgumentException;
+  /**
+   * Updates a Classification.
+   *
+   * @param classification the Classification to update
+   * @return the updated Classification.
+   * @throws ClassificationNotFoundException when the classification OR it´s parent does not exist.
+   * @throws NotAuthorizedException when the caller got no ADMIN or BUSINESS_ADMIN permissions.
+   * @throws ConcurrencyException when the Classification was modified meanwhile and is not latest
+   *     anymore.
+   * @throws InvalidArgumentException if the ServiceLevel property does not comply with the ISO 8601
+   *     specification
+   */
+  Classification updateClassification(Classification classification)
+      throws ClassificationNotFoundException, NotAuthorizedException, ConcurrencyException,
+          InvalidArgumentException;
 
-    /**
-     * This method provides a query builder for quering the database.
-     *
-     * @return a {@link ClassificationQuery}
-     */
-    ClassificationQuery createClassificationQuery();
+  /**
+   * This method provides a query builder for quering the database.
+   *
+   * @return a {@link ClassificationQuery}
+   */
+  ClassificationQuery createClassificationQuery();
 
-    /**
-     * Creating a new {@link Classification} with unchangeable default values. It will be only generated and is not
-     * persisted until CREATE-call.
-     *
-     * @param key
-     *            the key of the classification
-     * @param domain
-     *            the domain of the new classification
-     * @param type
-     *            the type of the new classification
-     * @return classification to specify
-     */
-    Classification newClassification(String key, String domain, String type);
+  /**
+   * Creating a new {@link Classification} with unchangeable default values. It will be only
+   * generated and is not persisted until CREATE-call.
+   *
+   * @param key the key of the classification
+   * @param domain the domain of the new classification
+   * @param type the type of the new classification
+   * @return classification to specify
+   */
+  Classification newClassification(String key, String domain, String type);
 }

lib/taskana-core/src/main/java/pro/taskana/ClassificationSummary.java

@@ -1,136 +1,135 @@
 package pro.taskana;
 
 /**
- * Interface for ClassificationSummaries. This is a specific short model-object which only requieres the most important
- * informations. Specific ones can be load afterwards via ID.
+ * Interface for ClassificationSummaries. This is a specific short model-object which only requieres
+ * the most important informations. Specific ones can be load afterwards via ID.
  */
 public interface ClassificationSummary {
 
-    /**
-     * Gets the id of the classification.
-     *
-     * @return classificationId
-     */
-    String getId();
+  /**
+   * Gets the id of the classification.
+   *
+   * @return classificationId
+   */
+  String getId();
 
-    /**
-     * Gets the key of the classification.
-     *
-     * @return classificationKey
-     */
-    String getKey();
+  /**
+   * Gets the key of the classification.
+   *
+   * @return classificationKey
+   */
+  String getKey();
 
-    /**
-     * Gets the category of the classification.
-     *
-     * @return classificationCategory
-     */
-    String getCategory();
+  /**
+   * Gets the category of the classification.
+   *
+   * @return classificationCategory
+   */
+  String getCategory();
 
-    /**
-     * Gets the type of the classification.
-     *
-     * @return classificationType
-     */
-    String getType();
+  /**
+   * Gets the type of the classification.
+   *
+   * @return classificationType
+   */
+  String getType();
 
-    /**
-     * Gets the domain of the classification.
-     *
-     * @return classificationDomain
-     */
-    String getDomain();
+  /**
+   * Gets the domain of the classification.
+   *
+   * @return classificationDomain
+   */
+  String getDomain();
 
-    /**
-     * Gets the name of the classification.
-     *
-     * @return classificationName
-     */
-    String getName();
+  /**
+   * Gets the name of the classification.
+   *
+   * @return classificationName
+   */
+  String getName();
 
-    /**
-     * Gets the ID of the parent classification.
-     *
-     * @return parentId
-     */
-    String getParentId();
+  /**
+   * Gets the ID of the parent classification.
+   *
+   * @return parentId
+   */
+  String getParentId();
 
-    /**
-     * Gets the key of the parent classification.
-     *
-     * @return parentKey
-     */
-    String getParentKey();
+  /**
+   * Gets the key of the parent classification.
+   *
+   * @return parentKey
+   */
+  String getParentKey();
 
-    /**
-     * Gets the service level of the parent classification. It is a String in ISO-8601 duration format. See the parse()
-     * method of {@code Duration} for details.
-     *
-     * @return the service level
-     */
-    String getServiceLevel();
+  /**
+   * Gets the service level of the parent classification. It is a String in ISO-8601 duration
+   * format. See the parse() method of {@code Duration} for details.
+   *
+   * @return the service level
+   */
+  String getServiceLevel();
 
-    /**
-     * Gets the priority of the classification.
-     *
-     * @return the priority
-     */
-    int getPriority();
+  /**
+   * Gets the priority of the classification.
+   *
+   * @return the priority
+   */
+  int getPriority();
 
-    /**
-     * Get the 1. custom-attribute.
-     *
-     * @return custom1
-     */
-    String getCustom1();
+  /**
+   * Get the 1. custom-attribute.
+   *
+   * @return custom1
+   */
+  String getCustom1();
 
-    /**
-     * Get the 2. custom-attribute.
-     *
-     * @return custom2
-     */
-    String getCustom2();
+  /**
+   * Get the 2. custom-attribute.
+   *
+   * @return custom2
+   */
+  String getCustom2();
 
-    /**
-     * Get the 3. custom-attribute.
-     *
-     * @return custom3
-     */
-    String getCustom3();
+  /**
+   * Get the 3. custom-attribute.
+   *
+   * @return custom3
+   */
+  String getCustom3();
 
-    /**
-     * Get the 4. custom-attribute.
-     *
-     * @return custom4
-     */
-    String getCustom4();
+  /**
+   * Get the 4. custom-attribute.
+   *
+   * @return custom4
+   */
+  String getCustom4();
 
-    /**
-     * Get the 5. custom-attribute.
-     *
-     * @return custom5
-     */
-    String getCustom5();
+  /**
+   * Get the 5. custom-attribute.
+   *
+   * @return custom5
+   */
+  String getCustom5();
 
-    /**
-     * Get the 6. custom-attribute.
-     *
-     * @return custom6
-     */
-    String getCustom6();
+  /**
+   * Get the 6. custom-attribute.
+   *
+   * @return custom6
+   */
+  String getCustom6();
 
-   /**
-     * Get the 7. custom-attribute.
-     *
-     * @return custom7
-     */
-    String getCustom7();
-
-    /**
-     * Get the 8. custom-attribute.
-     *
-     * @return custom8
-     */
-    String getCustom8();
+  /**
+   * Get the 7. custom-attribute.
+   *
+   * @return custom7
+   */
+  String getCustom7();
 
+  /**
+   * Get the 8. custom-attribute.
+   *
+   * @return custom8
+   */
+  String getCustom8();
 }

lib/taskana-core/src/main/java/pro/taskana/CustomField.java

@@ -1,23 +1,21 @@
 package pro.taskana;
 
-/**
- * This enum contains the fields CUSTOM_1 - CUSTOM_10 for the task entity.
- */
+/** This enum contains the fields CUSTOM_1 - CUSTOM_10 for the task entity. */
 public enum CustomField {
-    CUSTOM_1,
-    CUSTOM_2,
-    CUSTOM_3,
-    CUSTOM_4,
-    CUSTOM_5,
-    CUSTOM_6,
-    CUSTOM_7,
-    CUSTOM_8,
-    CUSTOM_9,
-    CUSTOM_10,
-    CUSTOM_11,
-    CUSTOM_12,
-    CUSTOM_13,
-    CUSTOM_14,
-    CUSTOM_15,
-    CUSTOM_16
+  CUSTOM_1,
+  CUSTOM_2,
+  CUSTOM_3,
+  CUSTOM_4,
+  CUSTOM_5,
+  CUSTOM_6,
+  CUSTOM_7,
+  CUSTOM_8,
+  CUSTOM_9,
+  CUSTOM_10,
+  CUSTOM_11,
+  CUSTOM_12,
+  CUSTOM_13,
+  CUSTOM_14,
+  CUSTOM_15,
+  CUSTOM_16
 }

lib/taskana-core/src/main/java/pro/taskana/JobService.java

@@ -2,18 +2,14 @@ package pro.taskana;
 
 import pro.taskana.jobs.ScheduledJob;
 
-/**
- * Service to manage the TASKANA jobs.
- */
+/** Service to manage the TASKANA jobs. */
 public interface JobService {
 
-    /**
-     * Create a schedule a new job.
-     *
-     * @param job
-     *            {@link ScheduledJob} The job to be created.
-     * @return {@link ScheduledJob} The created job.
-     */
-    ScheduledJob createJob(ScheduledJob job);
-
+  /**
+   * Create a schedule a new job.
+   *
+   * @param job {@link ScheduledJob} The job to be created.
+   * @return {@link ScheduledJob} The created job.
+   */
+  ScheduledJob createJob(ScheduledJob job);
 }

lib/taskana-core/src/main/java/pro/taskana/KeyDomain.java

@@ -7,74 +7,70 @@ package pro.taskana;
  */
 public class KeyDomain {
 
-    private String key;
-    private String domain;
+  private String key;
+  private String domain;
 
-    public KeyDomain(String key, String domain) {
-        this.key = key;
-        this.domain = domain;
+  public KeyDomain(String key, String domain) {
+    this.key = key;
+    this.domain = domain;
+  }
+
+  public String getKey() {
+    return key;
+  }
+
+  public void setKey(String key) {
+    this.key = key;
+  }
+
+  public String getDomain() {
+    return domain;
+  }
+
+  public void setDomain(String domain) {
+    this.domain = domain;
+  }
+
+  @Override
+  public int hashCode() {
+    final int prime = 31;
+    int result = 1;
+    result = prime * result + ((domain == null) ? 0 : domain.hashCode());
+    result = prime * result + ((key == null) ? 0 : key.hashCode());
+    return result;
+  }
+
+  @Override
+  public boolean equals(Object obj) {
+    if (this == obj) {
+      return true;
     }
-
-    public String getKey() {
-        return key;
+    if (obj == null) {
+      return false;
     }
-
-    public void setKey(String key) {
-        this.key = key;
+    if (!getClass().isAssignableFrom(obj.getClass())) {
+      return false;
     }
-
-    public String getDomain() {
-        return domain;
+    KeyDomain other = (KeyDomain) obj;
+    if (domain == null) {
+      if (other.domain != null) {
+        return false;
+      }
+    } else if (!domain.equals(other.domain)) {
+      return false;
     }
-
-    public void setDomain(String domain) {
-        this.domain = domain;
-    }
-
-    @Override
-    public String toString() {
-        return "KeyDomain ["
-             + "key=" + this.key
-             + ", domain=" + this.domain
-             + "]";
-    }
-
-    @Override
-    public int hashCode() {
-        final int prime = 31;
-        int result = 1;
-        result = prime * result + ((domain == null) ? 0 : domain.hashCode());
-        result = prime * result + ((key == null) ? 0 : key.hashCode());
-        return result;
-    }
-
-    @Override
-    public boolean equals(Object obj) {
-        if (this == obj) {
-            return true;
-        }
-        if (obj == null) {
-            return false;
-        }
-        if (!getClass().isAssignableFrom(obj.getClass())) {
-            return false;
-        }
-        KeyDomain other = (KeyDomain) obj;
-        if (domain == null) {
-            if (other.domain != null) {
-                return false;
-            }
-        } else if (!domain.equals(other.domain)) {
-            return false;
-        }
-        if (key == null) {
-            if (other.key != null) {
-                return false;
-            }
-        } else if (!key.equals(other.key)) {
-            return false;
-        }
-        return true;
+    if (key == null) {
+      if (other.key != null) {
+        return false;
+      }
+    } else if (!key.equals(other.key)) {
+      return false;
     }
+    return true;
+  }
 
+  @Override
+  public String toString() {
+    return "KeyDomain [" + "key=" + this.key + ", domain=" + this.domain + "]";
+  }
 }

lib/taskana-core/src/main/java/pro/taskana/ObjectReference.java

@@ -1,136 +1,143 @@
 package pro.taskana;
 
-/**
- * ObjectReference entity.
- */
+/** ObjectReference entity. */
 public class ObjectReference {
 
-    private String id;
-    private String company;
-    private String system;
-    private String systemInstance;
-    private String type;
-    private String value;
+  private String id;
+  private String company;
+  private String system;
+  private String systemInstance;
+  private String type;
+  private String value;
 
-    public String getId() {
-        return id;
+  public String getId() {
+    return id;
+  }
+
+  public void setId(String id) {
+    this.id = id;
+  }
+
+  public String getCompany() {
+    return company;
+  }
+
+  public void setCompany(String company) {
+    this.company = company;
+  }
+
+  public String getSystem() {
+    return system;
+  }
+
+  public void setSystem(String system) {
+    this.system = system;
+  }
+
+  public String getSystemInstance() {
+    return systemInstance;
+  }
+
+  public void setSystemInstance(String systemInstance) {
+    this.systemInstance = systemInstance;
+  }
+
+  public String getType() {
+    return type;
+  }
+
+  public void setType(String type) {
+    this.type = type;
+  }
+
+  public String getValue() {
+    return value;
+  }
+
+  public void setValue(String value) {
+    this.value = value;
+  }
+
+  @Override
+  public int hashCode() {
+    final int prime = 31;
+    int result = 1;
+    result = prime * result + ((id == null) ? 0 : id.hashCode());
+    result = prime * result + ((company == null) ? 0 : company.hashCode());
+    result = prime * result + ((system == null) ? 0 : system.hashCode());
+    result = prime * result + ((systemInstance == null) ? 0 : systemInstance.hashCode());
+    result = prime * result + ((type == null) ? 0 : type.hashCode());
+    result = prime * result + ((value == null) ? 0 : value.hashCode());
+    return result;
+  }
+
+  @Override
+  public boolean equals(Object other) {
+    if (this == other) {
+      return true;
     }
-
-    public void setId(String id) {
-        this.id = id;
+    if (other == null) {
+      return false;
     }
-
-    public String getCompany() {
-        return company;
+    if (!getClass().isAssignableFrom(other.getClass())) {
+      return false;
     }
+    ObjectReference o = (ObjectReference) other;
 
-    public void setCompany(String company) {
-        this.company = company;
+    if (id == null && o.id != null) {
+      return false;
     }
-
-    public String getSystem() {
-        return system;
+    if (id != null && !(id.equals(o.id))) {
+      return false;
     }
-
-    public void setSystem(String system) {
-        this.system = system;
+    if (company == null && o.company != null) {
+      return false;
     }
-
-    public String getSystemInstance() {
-        return systemInstance;
+    if (company != null && !(company.equals(o.company))) {
+      return false;
     }
-
-    public void setSystemInstance(String systemInstance) {
-        this.systemInstance = systemInstance;
+    if (system == null && o.system != null) {
+      return false;
     }
-
-    public String getType() {
-        return type;
+    if (system != null && !(system.equals(o.system))) {
+      return false;
     }
-
-    public void setType(String type) {
-        this.type = type;
+    if (systemInstance == null && o.systemInstance != null) {
+      return false;
     }
-
-    public String getValue() {
-        return value;
+    if (systemInstance != null && !(systemInstance.equals(o.systemInstance))) {
+      return false;
     }
-
-    public void setValue(String value) {
-        this.value = value;
+    if (type == null && o.type != null) {
+      return false;
     }
-
-    @Override
-    public String toString() {
-        return "ObjectReference ["
-                + "id=" + this.id + ", company="
-                + this.company + ", system=" + this.system
-                + ", systemInstance=" + this.systemInstance
-                + ", type=" + this.type + ", value=" + this.value + "]";
+    if (type != null && !(type.equals(o.type))) {
+      return false;
     }
-
-    @Override
-    public int hashCode() {
-        final int prime = 31;
-        int result = 1;
-        result = prime * result + ((id == null) ? 0 : id.hashCode());
-        result = prime * result + ((company == null) ? 0 : company.hashCode());
-        result = prime * result + ((system == null) ? 0 : system.hashCode());
-        result = prime * result + ((systemInstance == null) ? 0 : systemInstance.hashCode());
-        result = prime * result + ((type == null) ? 0 : type.hashCode());
-        result = prime * result + ((value == null) ? 0 : value.hashCode());
-        return result;
+    if (value == null && o.value != null) {
+      return false;
     }
-
-    @Override
-    public boolean equals(Object other) {
-        if (this == other) {
-            return true;
-        }
-        if (other == null) {
-            return false;
-        }
-        if (!getClass().isAssignableFrom(other.getClass())) {
-            return false;
-        }
-        ObjectReference o = (ObjectReference) other;
-
-        if (id == null && o.id != null) {
-            return false;
-        }
-        if (id != null && !(id.equals(o.id))) {
-            return false;
-        }
-        if (company == null && o.company != null) {
-            return false;
-        }
-        if (company != null && !(company.equals(o.company))) {
-            return false;
-        }
-        if (system == null && o.system != null) {
-            return false;
-        }
-        if (system != null && !(system.equals(o.system))) {
-            return false;
-        }
-        if (systemInstance == null && o.systemInstance != null) {
-            return false;
-        }
-        if (systemInstance != null && !(systemInstance.equals(o.systemInstance))) {
-            return false;
-        }
-        if (type == null && o.type != null) {
-            return false;
-        }
-        if (type != null && !(type.equals(o.type))) {
-            return false;
-        }
-        if (value == null && o.value != null) {
-            return false;
-        }
-        if (value != null && !(value.equals(o.value))) {
-            return false;
-        }
-        return true;
+    if (value != null && !(value.equals(o.value))) {
+      return false;
     }
+    return true;
+  }
+
+  @Override
+  public String toString() {
+    return "ObjectReference ["
+        + "id="
+        + this.id
+        + ", company="
+        + this.company
+        + ", system="
+        + this.system
+        + ", systemInstance="
+        + this.systemInstance
+        + ", type="
+        + this.type
+        + ", value="
+        + this.value
+        + "]";
+  }
 }

lib/taskana-core/src/main/java/pro/taskana/ObjectReferenceQuery.java

@@ -1,52 +1,46 @@
 package pro.taskana;
 
-/**
- * ObjectReferenceQuery for generating dynamic sql.
- */
-public interface ObjectReferenceQuery extends BaseQuery<ObjectReference, ObjectReferenceQueryColumnName> {
+/** ObjectReferenceQuery for generating dynamic sql. */
+public interface ObjectReferenceQuery
+    extends BaseQuery<ObjectReference, ObjectReferenceQueryColumnName> {
 
-    /**
-     * Add your company to your query.
-     *
-     * @param companies
-     *            as Strings
-     * @return the query
-     */
-    ObjectReferenceQuery companyIn(String... companies);
+  /**
+   * Add your company to your query.
+   *
+   * @param companies as Strings
+   * @return the query
+   */
+  ObjectReferenceQuery companyIn(String... companies);
 
-    /**
-     * Add your system to your query.
-     *
-     * @param systems
-     *            as Strings
-     * @return the query
-     */
-    ObjectReferenceQuery systemIn(String... systems);
+  /**
+   * Add your system to your query.
+   *
+   * @param systems as Strings
+   * @return the query
+   */
+  ObjectReferenceQuery systemIn(String... systems);
 
-    /**
-     * Add your systemInstance to your query.
-     *
-     * @param systemInstances
-     *            as Strings
-     * @return the query
-     */
-    ObjectReferenceQuery systemInstanceIn(String... systemInstances);
+  /**
+   * Add your systemInstance to your query.
+   *
+   * @param systemInstances as Strings
+   * @return the query
+   */
+  ObjectReferenceQuery systemInstanceIn(String... systemInstances);
 
-    /**
-     * Add your type to your query.
-     *
-     * @param types
-     *            as Strings
-     * @return the query
-     */
-    ObjectReferenceQuery typeIn(String... types);
+  /**
+   * Add your type to your query.
+   *
+   * @param types as Strings
+   * @return the query
+   */
+  ObjectReferenceQuery typeIn(String... types);
 
-    /**
-     * Add your value to your query.
-     *
-     * @param values
-     *            as Strings
-     * @return the query
-     */
-    ObjectReferenceQuery valueIn(String... values);
+  /**
+   * Add your value to your query.
+   *
+   * @param values as Strings
+   * @return the query
+   */
+  ObjectReferenceQuery valueIn(String... values);
 }

lib/taskana-core/src/main/java/pro/taskana/ObjectReferenceQueryColumnName.java

@@ -1,26 +1,27 @@
 package pro.taskana;
 
 /**
- * Enum containing the column names for @see {@link pro.taskana.mappings.QueryMapper#queryObjectReferenceColumnValues(pro.taskana.impl.ObjectReferenceQueryImpl)}.
+ * Enum containing the column names for @see {@link
+ * pro.taskana.mappings.QueryMapper#queryObjectReferenceColumnValues(pro.taskana.impl.ObjectReferenceQueryImpl)}.
  *
  * @author jsa
  */
 public enum ObjectReferenceQueryColumnName implements QueryColumnName {
-    ID("id"),
-    COMPANY("company"),
-    SYSTEM("system"),
-    SYSTEM_INSTANCE("system_instance"),
-    TYPE("type"),
-    VALUE("value");
+  ID("id"),
+  COMPANY("company"),
+  SYSTEM("system"),
+  SYSTEM_INSTANCE("system_instance"),
+  TYPE("type"),
+  VALUE("value");
 
-    private String name;
-    ObjectReferenceQueryColumnName(String name) {
-        this.name = name;
-    }
+  private String name;
 
-    @Override
-    public String toString() {
-        return name;
-    }
+  ObjectReferenceQueryColumnName(String name) {
+    this.name = name;
+  }
+
+  @Override
+  public String toString() {
+    return name;
+  }
 }
-

lib/taskana-core/src/main/java/pro/taskana/QueryColumnName.java

@@ -5,5 +5,4 @@ package pro.taskana;
  *
  * @author jsa
  */
-public interface QueryColumnName {
-}
+public interface QueryColumnName {}

lib/taskana-core/src/main/java/pro/taskana/Task.java

@@ -6,376 +6,357 @@ import java.util.Map;
 
 import pro.taskana.exceptions.InvalidArgumentException;
 
-/**
- * task-Interface to specify attribute interactions.
- */
+/** task-Interface to specify attribute interactions. */
 public interface Task {
 
-    /**
-     * Returns the current id of the task.
-     *
-     * @return taskId
-     */
-    String getId();
+  /**
+   * The key that is used to supply Callback_state within the CallbackInfo map. The Callback_state
+   * is used predominantly by the taskana adapter. It controls synchronization between taskana and
+   * the external system.
+   */
+  String CALLBACK_STATE = "callbackState";
 
-    /**
-     * Returns the external id of the task. This Id can be used to correlate the task to a task in an external
-     * system and to enforce idempotency of task creation. If not set by the client, it will be set by taskana.
-     *
-     * @return external Id
-     */
-    String getExternalId();
+  /**
+   * Returns the current id of the task.
+   *
+   * @return taskId
+   */
+  String getId();
 
-    /**
-     * Sets the external Id. It can be used to correlate the task to a task in an external system.
-     * The external Id is enforced to be unique. An attempt to create a task with
-     * an existing external Id will be rejected. So, this Id can be used to enforce idempotency of task creation.
-     * The externalId can only be set before the task is persisted. Taskana rejects attempts to modify externalId.
-     *
-     * @param externalId    the external Id
-     *
-     */
-    void setExternalId(String externalId);
+  /**
+   * Returns the external id of the task. This Id can be used to correlate the task to a task in an
+   * external system and to enforce idempotency of task creation. If not set by the client, it will
+   * be set by taskana.
+   *
+   * @return external Id
+   */
+  String getExternalId();
 
-    /**
-     * Gets the UserId of the task-creator.
-     *
-     * @return creator
-     */
-    String getCreator();
+  /**
+   * Sets the external Id. It can be used to correlate the task to a task in an external system. The
+   * external Id is enforced to be unique. An attempt to create a task with an existing external Id
+   * will be rejected. So, this Id can be used to enforce idempotency of task creation. The
+   * externalId can only be set before the task is persisted. Taskana rejects attempts to modify
+   * externalId.
+   *
+   * @param externalId the external Id
+   */
+  void setExternalId(String externalId);
 
-    /**
-     * Returns the time when the task was {@link TaskState#READY}.
-     *
-     * @return created as exact {@link Instant}
-     */
-    Instant getCreated();
+  /**
+   * Gets the UserId of the task-creator.
+   *
+   * @return creator
+   */
+  String getCreator();
 
-    /**
-     * Returns the time when the task was set to {@link TaskState#CLAIMED} by/to a user.
-     *
-     * @return claimed as exact {@link Instant}
-     */
-    Instant getClaimed();
+  /**
+   * Returns the time when the task was {@link TaskState#READY}.
+   *
+   * @return created as exact {@link Instant}
+   */
+  Instant getCreated();
 
-    /**
-     * Returns the time when the task was set into {@link TaskState#COMPLETED}.
-     *
-     * @return completed as exact {@link Instant}
-     */
-    Instant getCompleted();
+  /**
+   * Returns the time when the task was set to {@link TaskState#CLAIMED} by/to a user.
+   *
+   * @return claimed as exact {@link Instant}
+   */
+  Instant getClaimed();
 
-    /**
-     * Returns the time when the task was modified the last time.
-     *
-     * @return modified as exact {@link Instant}
-     */
-    Instant getModified();
+  /**
+   * Returns the time when the task was set into {@link TaskState#COMPLETED}.
+   *
+   * @return completed as exact {@link Instant}
+   */
+  Instant getCompleted();
 
-    /**
-     * Returns the time when the work on this task was planned to be started.
-     *
-     * @return planned as exact {@link Instant}
-     */
-    Instant getPlanned();
+  /**
+   * Returns the time when the task was modified the last time.
+   *
+   * @return modified as exact {@link Instant}
+   */
+  Instant getModified();
 
-    /**
-     * Sets the time when the work on this task should be started.
-     *
-     * @param planned
-     *            as exact {@link Instant}
-     */
-    void setPlanned(Instant planned);
+  /**
+   * Returns the time when the work on this task was planned to be started.
+   *
+   * @return planned as exact {@link Instant}
+   */
+  Instant getPlanned();
 
-    /**
-     * Returns the time when this task should be finished.
-     *
-     * @return due as exact {@link Instant}
-     */
-    Instant getDue();
+  /**
+   * Sets the time when the work on this task should be started.
+   *
+   * @param planned as exact {@link Instant}
+   */
+  void setPlanned(Instant planned);
 
-    /**
-     * Sets the time when the work on this task should be finished.
-     *
-     * @param due
-     *            as exact {@link Instant}
-     */
-    void setDue(Instant due);
+  /**
+   * Returns the time when this task should be finished.
+   *
+   * @return due as exact {@link Instant}
+   */
+  Instant getDue();
 
-    /**
-     * Return the name of the current task.
-     *
-     * @return name of the task
-     */
-    String getName();
+  /**
+   * Sets the time when the work on this task should be finished.
+   *
+   * @param due as exact {@link Instant}
+   */
+  void setDue(Instant due);
 
-    /**
-     * Sets the name of the current task.
-     *
-     * @param name
-     *            the name of the task
-     */
-    void setName(String name);
+  /**
+   * Return the name of the current task.
+   *
+   * @return name of the task
+   */
+  String getName();
 
-    /**
-     * Return the task-description.
-     *
-     * @return description of a task
-     */
-    String getDescription();
+  /**
+   * Sets the name of the current task.
+   *
+   * @param name the name of the task
+   */
+  void setName(String name);
 
-    /**
-     * Sets the description of the task.
-     *
-     * @param description
-     *            the description of the task
-     */
-    void setDescription(String description);
+  /**
+   * Return the task-description.
+   *
+   * @return description of a task
+   */
+  String getDescription();
 
-    /**
-     * Returns the numeric priority of a task.
-     *
-     * @return priority of the task
-     */
-    int getPriority();
+  /**
+   * Sets the description of the task.
+   *
+   * @param description the description of the task
+   */
+  void setDescription(String description);
 
-    /**
-     * Returns the current {@link TaskState} of the task.
-     *
-     * @return taskState
-     */
-    TaskState getState();
+  /**
+   * Returns the numeric priority of a task.
+   *
+   * @return priority of the task
+   */
+  int getPriority();
 
-    /**
-     * Returns the {@link ClassificationSummary} of the task.
-     *
-     * @return classification summary for the task
-     */
-    ClassificationSummary getClassificationSummary();
+  /**
+   * Returns the current {@link TaskState} of the task.
+   *
+   * @return taskState
+   */
+  TaskState getState();
 
-    /**
-     * Sets the Classification key that - together with the Domain from this task's work basket - selects the
-     * appropriate {@link Classification} for this task.
-     *
-     * @param classificationKey
-     *            the classification key for the task
-     */
-    void setClassificationKey(String classificationKey);
+  /**
+   * Returns the {@link ClassificationSummary} of the task.
+   *
+   * @return classification summary for the task
+   */
+  ClassificationSummary getClassificationSummary();
 
-    /**
-     * Returns the key of the Workbasket where the task is stored in.
-     *
-     * @return workbasketKey
-     */
-    String getWorkbasketKey();
+  /**
+   * Sets the Classification key that - together with the Domain from this task's work basket -
+   * selects the appropriate {@link Classification} for this task.
+   *
+   * @param classificationKey the classification key for the task
+   */
+  void setClassificationKey(String classificationKey);
 
-    /**
-     * Returns the the Summary of the workbasket where the task is stored in.
-     *
-     * @return workbasketSummary
-     */
-    WorkbasketSummary getWorkbasketSummary();
+  /**
+   * Returns the key of the Workbasket where the task is stored in.
+   *
+   * @return workbasketKey
+   */
+  String getWorkbasketKey();
 
-    /**
-     * Returns the Domain, to which the Task belongs at this moment.
-     *
-     * @return domain the current domain of the task
-     */
-    String getDomain();
+  /**
+   * Returns the the Summary of the workbasket where the task is stored in.
+   *
+   * @return workbasketSummary
+   */
+  WorkbasketSummary getWorkbasketSummary();
 
-    /**
-     * Returns the businessProcessId of a task.
-     *
-     * @return businessProcessId Gets the business process id the task belongs to.
-     */
-    String getBusinessProcessId();
+  /**
+   * Returns the Domain, to which the Task belongs at this moment.
+   *
+   * @return domain the current domain of the task
+   */
+  String getDomain();
 
-    /**
-     * Sets the external business process id.
-     *
-     * @param businessProcessId
-     *            Sets the business process id the task belongs to.
-     */
-    void setBusinessProcessId(String businessProcessId);
+  /**
+   * Returns the businessProcessId of a task.
+   *
+   * @return businessProcessId Gets the business process id the task belongs to.
+   */
+  String getBusinessProcessId();
 
-    /**
-     * Returns the parentBusinessProcessId of a task.
-     *
-     * @return parentBusinessProcessId Gets the parent business process id the task belongs to
-     */
-    String getParentBusinessProcessId();
+  /**
+   * Sets the external business process id.
+   *
+   * @param businessProcessId Sets the business process id the task belongs to.
+   */
+  void setBusinessProcessId(String businessProcessId);
 
-    /**
-     * Sets the parent business process id to group associated processes.
-     *
-     * @param parentBusinessProcessId
-     *            Sets the parent business process id the task belongs to
-     */
-    void setParentBusinessProcessId(String parentBusinessProcessId);
+  /**
+   * Returns the parentBusinessProcessId of a task.
+   *
+   * @return parentBusinessProcessId Gets the parent business process id the task belongs to
+   */
+  String getParentBusinessProcessId();
 
-    /**
-     * Return the id of the task-owner.
-     *
-     * @return taskOwnerId
-     */
-    String getOwner();
+  /**
+   * Sets the parent business process id to group associated processes.
+   *
+   * @param parentBusinessProcessId Sets the parent business process id the task belongs to
+   */
+  void setParentBusinessProcessId(String parentBusinessProcessId);
 
-    /**
-     * Sets the ownerId of this task.
-     *
-     * @param taskOwnerId
-     *            the user id of the task's owner
-     */
-    void setOwner(String taskOwnerId);
+  /**
+   * Return the id of the task-owner.
+   *
+   * @return taskOwnerId
+   */
+  String getOwner();
 
-    /**
-     * Returns the {@link ObjectReference primaryObjectReference} of the task.
-     *
-     * @return primaryObjRef to task main-subject
-     */
-    ObjectReference getPrimaryObjRef();
+  /**
+   * Sets the ownerId of this task.
+   *
+   * @param taskOwnerId the user id of the task's owner
+   */
+  void setOwner(String taskOwnerId);
 
-    /**
-     * Sets the {@link ObjectReference primaryObjectReference} of the task.
-     *
-     * @param primaryObjRef
-     *            to task main-subject
-     */
-    void setPrimaryObjRef(ObjectReference primaryObjRef);
+  /**
+   * Returns the {@link ObjectReference primaryObjectReference} of the task.
+   *
+   * @return primaryObjRef to task main-subject
+   */
+  ObjectReference getPrimaryObjRef();
 
-    /**
-     * Return the isRead-flag, which flags a task as viewed at least one time.
-     *
-     * @return isRead-flag
-     */
-    boolean isRead();
+  /**
+   * Sets the {@link ObjectReference primaryObjectReference} of the task.
+   *
+   * @param primaryObjRef to task main-subject
+   */
+  void setPrimaryObjRef(ObjectReference primaryObjRef);
 
-    /**
-     * Return the isTransferred-flag, which flags a task as transfered into an other workbasket.
-     *
-     * @return isTransferred-flag
-     */
-    boolean isTransferred();
+  /**
+   * Return the isRead-flag, which flags a task as viewed at least one time.
+   *
+   * @return isRead-flag
+   */
+  boolean isRead();
 
-    /**
-     * Returns a Map of custom Attributes.
-     *
-     * @return customAttributes as {@link Map}
-     */
-    Map<String, String> getCustomAttributes();
+  /**
+   * Return the isTransferred-flag, which flags a task as transfered into an other workbasket.
+   *
+   * @return isTransferred-flag
+   */
+  boolean isTransferred();
 
-    /**
-     * Sets a Map of custom Attributes.
-     *
-     * @param customAttributes
-     *            a {@link Map} that contains the custom attributes
-     */
-    void setCustomAttributes(Map<String, String> customAttributes);
+  /**
+   * Returns a Map of custom Attributes.
+   *
+   * @return customAttributes as {@link Map}
+   */
+  Map<String, String> getCustomAttributes();
 
-    /**
-     * Returns a Map of Callback info.
-     *
-     * @return callbackInfo as {@link Map}
-     */
-    Map<String, String> getCallbackInfo();
+  /**
+   * Sets a Map of custom Attributes.
+   *
+   * @param customAttributes a {@link Map} that contains the custom attributes
+   */
+  void setCustomAttributes(Map<String, String> customAttributes);
 
-    /**
-     * Sets a Map of callback info.
-     *
-     * @param callbackInfo
-     *            a {@link Map} that contains the callback info
-     */
-    void setCallbackInfo(Map<String, String> callbackInfo);
+  /**
+   * Returns a Map of Callback info.
+   *
+   * @return callbackInfo as {@link Map}
+   */
+  Map<String, String> getCallbackInfo();
 
-    /**
-     * Return the value for custom Attribute number num.
-     *
-     * @param num
-     *            identifies which custom attribute is requested. Taskana concatenates "custom_" with num and the
-     *            resulting String must match the name of the database column that contains the custom attribute. Valid
-     *            values are "1", "2" .. "16"
-     * @return the value of custom attribute number num
-     * @throws InvalidArgumentException
-     *             if num has not a value of "1", "2" ... "16"
-     */
-    String getCustomAttribute(String num) throws InvalidArgumentException;
+  /**
+   * Sets a Map of callback info.
+   *
+   * @param callbackInfo a {@link Map} that contains the callback info
+   */
+  void setCallbackInfo(Map<String, String> callbackInfo);
 
-    /**
-     * Sets the value for custom Attribute number num.
-     *
-     * @param num
-     *            identifies which custom attribute is to be set. Taskana concatenates "custom_" with num and the
-     *            resulting String must match the name of the database column that contains the custom attribute. Valid
-     *            values are "1", "2" .. "16"
-     * @param value
-     *            the value of the custom attribute to be set
-     * @throws InvalidArgumentException
-     *             if num has not a value of "1", "2" ... "16"
-     */
-    void setCustomAttribute(String num, String value) throws InvalidArgumentException;
+  /**
+   * Return the value for custom Attribute number num.
+   *
+   * @param num identifies which custom attribute is requested. Taskana concatenates "custom_" with
+   *     num and the resulting String must match the name of the database column that contains the
+   *     custom attribute. Valid values are "1", "2" .. "16"
+   * @return the value of custom attribute number num
+   * @throws InvalidArgumentException if num has not a value of "1", "2" ... "16"
+   */
+  String getCustomAttribute(String num) throws InvalidArgumentException;
 
-    /**
-     * Add an attachment.<br>
-     * NULL will be ignored and an attachment with the same ID will be replaced by the newer one.<br>
-     *
-     * @param attachment
-     *            the {@link Attachment attachment} to be added to the task
-     */
-    void addAttachment(Attachment attachment);
+  /**
+   * Sets the value for custom Attribute number num.
+   *
+   * @param num identifies which custom attribute is to be set. Taskana concatenates "custom_" with
+   *     num and the resulting String must match the name of the database column that contains the
+   *     custom attribute. Valid values are "1", "2" .. "16"
+   * @param value the value of the custom attribute to be set
+   * @throws InvalidArgumentException if num has not a value of "1", "2" ... "16"
+   */
+  void setCustomAttribute(String num, String value) throws InvalidArgumentException;
 
-    /**
-     * Return the attachments for this task. <br>
-     * Do not use List.add()/addAll() for adding Elements, because it can cause redundant data. Use addAttachment().
-     * Clear() and remove() can be used, because it´s a controllable change.
-     *
-     * @return the {@link List list} of {@link Attachment attachments} for this task
-     */
-    List<Attachment> getAttachments();
+  /**
+   * Add an attachment.<br>
+   * NULL will be ignored and an attachment with the same ID will be replaced by the newer one.<br>
+   *
+   * @param attachment the {@link Attachment attachment} to be added to the task
+   */
+  void addAttachment(Attachment attachment);
 
-    /**
-     * Returns the custom note for this Task.
-     *
-     * @return the custom note for this TAsk
-     */
-    String getNote();
+  /**
+   * Return the attachments for this task. <br>
+   * Do not use List.add()/addAll() for adding Elements, because it can cause redundant data. Use
+   * addAttachment(). Clear() and remove() can be used, because it´s a controllable change.
+   *
+   * @return the {@link List list} of {@link Attachment attachments} for this task
+   */
+  List<Attachment> getAttachments();
 
-    /**
-     * Sets/Changing the custom note for this Task.
-     *
-     * @param note
-     *            the custom note for this Task.
-     */
-    void setNote(String note);
+  /**
+   * Returns the custom note for this Task.
+   *
+   * @return the custom note for this TAsk
+   */
+  String getNote();
 
-    /**
-     * Return a summary of the current Task.
-     *
-     * @return the TaskSummary object for the current task
-     */
-    TaskSummary asSummary();
+  /**
+   * Sets/Changing the custom note for this Task.
+   *
+   * @param note the custom note for this Task.
+   */
+  void setNote(String note);
 
-    /**
-     * Removes an attachment of the current task locally, when the ID is represented and does return the removed
-     * attachment or null if there was no match.<br>
-     * The changed Task need to be updated calling the {@link TaskService#updateTask(Task)}.
-     *
-     * @param attachmentID
-     *            ID of the attachment which should be removed.
-     * @return attachment which will be removed after updating OR null if there was no matching attachment
-     */
-    Attachment removeAttachment(String attachmentID);
+  /**
+   * Return a summary of the current Task.
+   *
+   * @return the TaskSummary object for the current task
+   */
+  TaskSummary asSummary();
 
-    /**
-     * Returns the category of the current classification.
-     *
-     * @return classificationCategory
-     */
-    String getClassificationCategory();
+  /**
+   * Removes an attachment of the current task locally, when the ID is represented and does return
+   * the removed attachment or null if there was no match.<br>
+   * The changed Task need to be updated calling the {@link TaskService#updateTask(Task)}.
+   *
+   * @param attachmentID ID of the attachment which should be removed.
+   * @return attachment which will be removed after updating OR null if there was no matching
+   *     attachment
+   */
+  Attachment removeAttachment(String attachmentID);
 
-    /**
-     * The key that is used to supply Callback_state within the CallbackInfo map.
-     * The Callback_state is used predominantly by the taskana adapter. It controls synchronization between taskana and the external system.
-     *
-     */
-    String CALLBACK_STATE = "callbackState";
+  /**
+   * Returns the category of the current classification.
+   *
+   * @return classificationCategory
+   */
+  String getClassificationCategory();
 }

lib/taskana-core/src/main/java/pro/taskana/TaskMonitorService.java

@@ -3,62 +3,58 @@ package pro.taskana;
 import pro.taskana.report.CategoryReport;
 import pro.taskana.report.ClassificationReport;
 import pro.taskana.report.CustomFieldValueReport;
-import pro.taskana.report.TimestampReport;
 import pro.taskana.report.TaskStatusReport;
+import pro.taskana.report.TimestampReport;
 import pro.taskana.report.WorkbasketReport;
 
-/**
- * The Task Monitor Service manages operations on tasks regarding the monitoring.
- */
+/** The Task Monitor Service manages operations on tasks regarding the monitoring. */
 public interface TaskMonitorService {
 
-    /**
-     * Provides a {@link WorkbasketReport.Builder} for creating a {@link WorkbasketReport}, list the task ids of this report
-     * and list the values of an entered custom attribute.
-     *
-     * @return a {@link WorkbasketReport.Builder}
-     */
-    WorkbasketReport.Builder createWorkbasketReportBuilder();
+  /**
+   * Provides a {@link WorkbasketReport.Builder} for creating a {@link WorkbasketReport}, list the
+   * task ids of this report and list the values of an entered custom attribute.
+   *
+   * @return a {@link WorkbasketReport.Builder}
+   */
+  WorkbasketReport.Builder createWorkbasketReportBuilder();
 
-    /**
-     * Provides a {@link CategoryReport.Builder} for creating a {@link CategoryReport}, list the task ids of this report and list
-     * the values of an entered custom attribute.
-     *
-     * @return a {@link CategoryReport.Builder}
-     */
-    CategoryReport.Builder createCategoryReportBuilder();
+  /**
+   * Provides a {@link CategoryReport.Builder} for creating a {@link CategoryReport}, list the task
+   * ids of this report and list the values of an entered custom attribute.
+   *
+   * @return a {@link CategoryReport.Builder}
+   */
+  CategoryReport.Builder createCategoryReportBuilder();
 
-    /**
-     * Provides a {@link ClassificationReport.Builder} for creating a {@link ClassificationReport} or a
-     * DetailedClassificationReport, list the task ids of these reports and list the values of an entered custom
-     * attribute.
-     *
-     * @return a {@link ClassificationReport.Builder}
-     */
-    ClassificationReport.Builder createClassificationReportBuilder();
+  /**
+   * Provides a {@link ClassificationReport.Builder} for creating a {@link ClassificationReport} or
+   * a DetailedClassificationReport, list the task ids of these reports and list the values of an
+   * entered custom attribute.
+   *
+   * @return a {@link ClassificationReport.Builder}
+   */
+  ClassificationReport.Builder createClassificationReportBuilder();
 
-    /**
-     * Provides a {@link CustomFieldValueReport.Builder} for creating a {@link CustomFieldValueReport} and list the values of
-     * an entered custom attribute.
-     *
-     * @param customField
-     *            the customField whose values should appear in the report
-     * @return a {@link CustomFieldValueReport.Builder}
-     */
-    CustomFieldValueReport.Builder createCustomFieldValueReportBuilder(CustomField customField);
+  /**
+   * Provides a {@link CustomFieldValueReport.Builder} for creating a {@link CustomFieldValueReport}
+   * and list the values of an entered custom attribute.
+   *
+   * @param customField the customField whose values should appear in the report
+   * @return a {@link CustomFieldValueReport.Builder}
+   */
+  CustomFieldValueReport.Builder createCustomFieldValueReportBuilder(CustomField customField);
 
-    /**
-     * Provides a {@link TaskStatusReport.Builder} for creating a {@link TaskStatusReport}.
-     *
-     * @return a {@link TaskStatusReport.Builder}
-     */
-    TaskStatusReport.Builder createTaskStatusReportBuilder();
-
-    /**
-     * Provides a {@link TimestampReport.Builder} for creating a {@link TimestampReport}.
-     *
-     * @return a {@link TimestampReport.Builder}
-     */
-    TimestampReport.Builder createTimestampReportBuilder();
+  /**
+   * Provides a {@link TaskStatusReport.Builder} for creating a {@link TaskStatusReport}.
+   *
+   * @return a {@link TaskStatusReport.Builder}
+   */
+  TaskStatusReport.Builder createTaskStatusReportBuilder();
 
+  /**
+   * Provides a {@link TimestampReport.Builder} for creating a {@link TimestampReport}.
+   *
+   * @return a {@link TimestampReport.Builder}
+   */
+  TimestampReport.Builder createTimestampReportBuilder();
 }

lib/taskana-core/src/main/java/pro/taskana/TaskQueryColumnName.java

@@ -1,75 +1,77 @@
 package pro.taskana;
 
 /**
- * Enum containing the column names for @see pro.taskana.mappings.QueryMapper#queryTaskColumnValues(pro.taskana.impl.TaskQueryImpl).
+ * Enum containing the column names for @see
+ * pro.taskana.mappings.QueryMapper#queryTaskColumnValues(pro.taskana.impl.TaskQueryImpl).
  *
  * @author jsa
  */
 public enum TaskQueryColumnName implements QueryColumnName {
-    ID("t.id"),
-    EXTERNAL_ID("t.external_id"),
-    CREATED("t.created"),
-    CLAIMED("t.claimed"),
-    COMPLETED("t.completed"),
-    MODIFIED("t.modified"),
-    PLANNED("t.planned"),
-    DUE("t.due"),
-    NAME("t.name"),
-    CREATOR("t.creator"),
-    DESCRIPTION("t.description"),
-    NOTE("t.note"),
-    PRIORITY("t.priority"),
-    STATE("t.state"),
-    CLASSIFICATION_CATEGORY("t.classification_category"),
-    CLASSIFICATION_KEY("t.classification_key"),
-    CLASSIFICATION_ID("t.classification_id"),
-    CLASSIFICATION_NAME("c.name"),
-    WORKBASKET_ID("t.workbasket_id"),
-    WORKBASKET_KEY("t.workbasket_key"),
-    DOMAIN("t.domain"),
-    BUSINESS_PROCESS_ID("t.business_process_id"),
-    PARENT_BUSINESS_PROCESS_ID("t.parent_business_process_id"),
-    OWNER("t.owner"),
-    POR_COMPANY("t.por_company"),
-    POR_SYSTEM("t.por_system"),
-    POR_INSTANCE("t.por_instance"),
-    POR_TYPE("t.por_type"),
-    POR_VALUE("t.por_value"),
-    IS_READ("t.is_read"),
-    IS_TRANSFERRED("t.is_transferred"),
-    CUSTOM_1("t.custom_1"),
-    CUSTOM_2("t.custom_2"),
-    CUSTOM_3("t.custom_3"),
-    CUSTOM_4("t.custom_4"),
-    CUSTOM_5("t.custom_5"),
-    CUSTOM_6("t.custom_6"),
-    CUSTOM_7("t.custom_7"),
-    CUSTOM_8("t.custom_8"),
-    CUSTOM_9("t.custom_9"),
-    CUSTOM_10("t.custom_10"),
-    CUSTOM_11("t.custom_11"),
-    CUSTOM_12("t.custom_12"),
-    CUSTOM_13("t.custom_13"),
-    CUSTOM_14("t.custom_14"),
-    CUSTOM_15("t.custom_15"),
-    CUSTOM_16("t.custom_16"),
-    A_CLASSIFICATION_KEY("a.classification_key"),
-    A_CLASSIFICATION_ID("a.classification_id"),
-    A_CLASSIFICATION_NAME("ac.name"),
-    A_CHANNEL("a.channel"),
-    A_REF_VALUE("a.ref_value");
+  ID("t.id"),
+  EXTERNAL_ID("t.external_id"),
+  CREATED("t.created"),
+  CLAIMED("t.claimed"),
+  COMPLETED("t.completed"),
+  MODIFIED("t.modified"),
+  PLANNED("t.planned"),
+  DUE("t.due"),
+  NAME("t.name"),
+  CREATOR("t.creator"),
+  DESCRIPTION("t.description"),
+  NOTE("t.note"),
+  PRIORITY("t.priority"),
+  STATE("t.state"),
+  CLASSIFICATION_CATEGORY("t.classification_category"),
+  CLASSIFICATION_KEY("t.classification_key"),
+  CLASSIFICATION_ID("t.classification_id"),
+  CLASSIFICATION_NAME("c.name"),
+  WORKBASKET_ID("t.workbasket_id"),
+  WORKBASKET_KEY("t.workbasket_key"),
+  DOMAIN("t.domain"),
+  BUSINESS_PROCESS_ID("t.business_process_id"),
+  PARENT_BUSINESS_PROCESS_ID("t.parent_business_process_id"),
+  OWNER("t.owner"),
+  POR_COMPANY("t.por_company"),
+  POR_SYSTEM("t.por_system"),
+  POR_INSTANCE("t.por_instance"),
+  POR_TYPE("t.por_type"),
+  POR_VALUE("t.por_value"),
+  IS_READ("t.is_read"),
+  IS_TRANSFERRED("t.is_transferred"),
+  CUSTOM_1("t.custom_1"),
+  CUSTOM_2("t.custom_2"),
+  CUSTOM_3("t.custom_3"),
+  CUSTOM_4("t.custom_4"),
+  CUSTOM_5("t.custom_5"),
+  CUSTOM_6("t.custom_6"),
+  CUSTOM_7("t.custom_7"),
+  CUSTOM_8("t.custom_8"),
+  CUSTOM_9("t.custom_9"),
+  CUSTOM_10("t.custom_10"),
+  CUSTOM_11("t.custom_11"),
+  CUSTOM_12("t.custom_12"),
+  CUSTOM_13("t.custom_13"),
+  CUSTOM_14("t.custom_14"),
+  CUSTOM_15("t.custom_15"),
+  CUSTOM_16("t.custom_16"),
+  A_CLASSIFICATION_KEY("a.classification_key"),
+  A_CLASSIFICATION_ID("a.classification_id"),
+  A_CLASSIFICATION_NAME("ac.name"),
+  A_CHANNEL("a.channel"),
+  A_REF_VALUE("a.ref_value");
 
-    private String name;
-    TaskQueryColumnName(String name) {
-        this.name = name;
-    }
+  private String name;
 
-    @Override
-    public String toString() {
-        return name;
-    }
+  TaskQueryColumnName(String name) {
+    this.name = name;
+  }
 
-    public boolean isAttachmentColumn() {
-        return this.name().startsWith("A_");
-    }
+  public boolean isAttachmentColumn() {
+    return this.name().startsWith("A_");
+  }
+
+  @Override
+  public String toString() {
+    return name;
+  }
 }

lib/taskana-core/src/main/java/pro/taskana/TaskService.java

@@ -15,418 +15,356 @@ import pro.taskana.exceptions.TaskNotFoundException;
 import pro.taskana.exceptions.TaskanaException;
 import pro.taskana.exceptions.WorkbasketNotFoundException;
 
-/**
- * The Task Service manages all operations on tasks.
- */
+/** The Task Service manages all operations on tasks. */
 public interface TaskService {
 
-    /**
-     * Claim an existing task for the current user.
-     *
-     * @param taskId
-     *            the id of the task to be claimed
-     * @return claimed Task
-     * @throws TaskNotFoundException
-     *             if the task with taskId was not found
-     * @throws InvalidStateException
-     *             if the state of the task with taskId is not READY
-     * @throws InvalidOwnerException
-     *             if the task with taskId is claimed by some else
-     * @throws NotAuthorizedException
-     *             if the current user has no read permission for the workbasket the task is in
-     */
-    Task claim(String taskId)
-        throws TaskNotFoundException, InvalidStateException, InvalidOwnerException, NotAuthorizedException;
+  /**
+   * Claim an existing task for the current user.
+   *
+   * @param taskId the id of the task to be claimed
+   * @return claimed Task
+   * @throws TaskNotFoundException if the task with taskId was not found
+   * @throws InvalidStateException if the state of the task with taskId is not READY
+   * @throws InvalidOwnerException if the task with taskId is claimed by some else
+   * @throws NotAuthorizedException if the current user has no read permission for the workbasket
+   *     the task is in
+   */
+  Task claim(String taskId)
+      throws TaskNotFoundException, InvalidStateException, InvalidOwnerException,
+          NotAuthorizedException;
 
-    /**
-     * Claim an existing task for the current user even if it is already claimed by someone else.
-     *
-     * @param taskId
-     *            the id of the task to be claimed
-     * @return claimed Task
-     * @throws TaskNotFoundException
-     *             if the task with taskId was not found
-     * @throws InvalidStateException
-     *             if the state of the task with taskId is not READY
-     * @throws InvalidOwnerException
-     *             if the task with taskId is claimed by someone else
-     * @throws NotAuthorizedException
-     *             if the current user has no read permission for the workbasket the task is in
-     */
-    Task forceClaim(String taskId)
-        throws TaskNotFoundException, InvalidStateException, InvalidOwnerException, NotAuthorizedException;
+  /**
+   * Claim an existing task for the current user even if it is already claimed by someone else.
+   *
+   * @param taskId the id of the task to be claimed
+   * @return claimed Task
+   * @throws TaskNotFoundException if the task with taskId was not found
+   * @throws InvalidStateException if the state of the task with taskId is not READY
+   * @throws InvalidOwnerException if the task with taskId is claimed by someone else
+   * @throws NotAuthorizedException if the current user has no read permission for the workbasket
+   *     the task is in
+   */
+  Task forceClaim(String taskId)
+      throws TaskNotFoundException, InvalidStateException, InvalidOwnerException,
+          NotAuthorizedException;
 
-    /**
-     * Cancel the claim of an existing task if it was claimed by the current user before.
-     *
-     * @param taskId
-     *            id of the task which should be unclaimed.
-     * @return updated unclaimed task
-     * @throws TaskNotFoundException
-     *             if the task can´t be found or does not exist
-     * @throws InvalidStateException
-     *             when the task is already completed.
-     * @throws InvalidOwnerException
-     *             when the task is claimed by another user.
-     * @throws NotAuthorizedException
-     *             if the current user has no read permission for the workbasket the task is in
-     */
-    Task cancelClaim(String taskId)
-        throws TaskNotFoundException, InvalidStateException, InvalidOwnerException, NotAuthorizedException;
+  /**
+   * Cancel the claim of an existing task if it was claimed by the current user before.
+   *
+   * @param taskId id of the task which should be unclaimed.
+   * @return updated unclaimed task
+   * @throws TaskNotFoundException if the task can´t be found or does not exist
+   * @throws InvalidStateException when the task is already completed.
+   * @throws InvalidOwnerException when the task is claimed by another user.
+   * @throws NotAuthorizedException if the current user has no read permission for the workbasket
+   *     the task is in
+   */
+  Task cancelClaim(String taskId)
+      throws TaskNotFoundException, InvalidStateException, InvalidOwnerException,
+          NotAuthorizedException;
 
-    /**
-     * Cancel the claim of an existing task even if it was claimed by another user.
-     *
-     * @param taskId
-     *            id of the task which should be unclaimed.
-     * @return updated unclaimed task
-     * @throws TaskNotFoundException
-     *             if the task can´t be found or does not exist
-     * @throws InvalidStateException
-     *             when the task is already completed.
-     * @throws InvalidOwnerException
-     *             when forceCancel is false and the task is claimed by another user.
-     * @throws NotAuthorizedException
-     *             if the current user has no read permission for the workbasket the task is in
-     */
-    Task forceCancelClaim(String taskId)
-        throws TaskNotFoundException, InvalidStateException, InvalidOwnerException, NotAuthorizedException;
+  /**
+   * Cancel the claim of an existing task even if it was claimed by another user.
+   *
+   * @param taskId id of the task which should be unclaimed.
+   * @return updated unclaimed task
+   * @throws TaskNotFoundException if the task can´t be found or does not exist
+   * @throws InvalidStateException when the task is already completed.
+   * @throws InvalidOwnerException when forceCancel is false and the task is claimed by another
+   *     user.
+   * @throws NotAuthorizedException if the current user has no read permission for the workbasket
+   *     the task is in
+   */
+  Task forceCancelClaim(String taskId)
+      throws TaskNotFoundException, InvalidStateException, InvalidOwnerException,
+          NotAuthorizedException;
 
-    /**
-     * Complete a claimed Task as owner/admin and update State and Timestamps. If task is already completed, the task is
-     * returned as itself.
-     *
-     * @param taskId
-     *            - Id of the Task which should be completed.
-     * @return Task - updated task after completion.
-     * @throws InvalidStateException
-     *             when Task wasn´t claimed before.
-     * @throws TaskNotFoundException
-     *             if the given Task can´t be found in DB.
-     * @throws InvalidOwnerException
-     *             if current user is not the task-owner or administrator.
-     * @throws NotAuthorizedException
-     *             if the current user has no read permission for the workbasket the task is in
-     */
-    Task completeTask(String taskId)
-        throws TaskNotFoundException, InvalidOwnerException, InvalidStateException, NotAuthorizedException;
+  /**
+   * Complete a claimed Task as owner/admin and update State and Timestamps. If task is already
+   * completed, the task is returned as itself.
+   *
+   * @param taskId - Id of the Task which should be completed.
+   * @return Task - updated task after completion.
+   * @throws InvalidStateException when Task wasn´t claimed before.
+   * @throws TaskNotFoundException if the given Task can´t be found in DB.
+   * @throws InvalidOwnerException if current user is not the task-owner or administrator.
+   * @throws NotAuthorizedException if the current user has no read permission for the workbasket
+   *     the task is in
+   */
+  Task completeTask(String taskId)
+      throws TaskNotFoundException, InvalidOwnerException, InvalidStateException,
+          NotAuthorizedException;
 
-    /**
-     * Complete a Task and update State and Timestamps in every case if the Task exists. If task is already completed,
-     * the task is returned as itself.
-     *
-     * @param taskId
-     *            - Id of the Task which should be completed.
-     * @return Task - updated task after completion.
-     * @throws InvalidStateException
-     *             when Task wasn´t claimed before.
-     * @throws TaskNotFoundException
-     *             if the given Task can´t be found in DB.
-     * @throws InvalidOwnerException
-     *             if current user is not the task-owner or administrator.
-     * @throws NotAuthorizedException
-     *             if the current user has no read permission for the workbasket the task is in
-     */
-    Task forceCompleteTask(String taskId)
-        throws TaskNotFoundException, InvalidOwnerException, InvalidStateException, NotAuthorizedException;
+  /**
+   * Complete a Task and update State and Timestamps in every case if the Task exists. If task is
+   * already completed, the task is returned as itself.
+   *
+   * @param taskId - Id of the Task which should be completed.
+   * @return Task - updated task after completion.
+   * @throws InvalidStateException when Task wasn´t claimed before.
+   * @throws TaskNotFoundException if the given Task can´t be found in DB.
+   * @throws InvalidOwnerException if current user is not the task-owner or administrator.
+   * @throws NotAuthorizedException if the current user has no read permission for the workbasket
+   *     the task is in
+   */
+  Task forceCompleteTask(String taskId)
+      throws TaskNotFoundException, InvalidOwnerException, InvalidStateException,
+          NotAuthorizedException;
 
-    /**
-     * Persists a not persisted Task which does not exist already.
-     *
-     * @param taskToCreate
-     *            the transient task object to be persisted
-     * @return the created and persisted task
-     * @throws TaskAlreadyExistException
-     *             when the Task does already exist.
-     * @throws NotAuthorizedException
-     *             thrown if the current user is not authorized to create that task
-     * @throws WorkbasketNotFoundException
-     *             thrown if the work basket referenced by the task is not found
-     * @throws ClassificationNotFoundException
-     *             thrown if the {@link Classification} referenced by the task is not found
-     * @throws InvalidArgumentException
-     *             thrown if the primary ObjectReference is invalid
-     */
-    Task createTask(Task taskToCreate)
-        throws NotAuthorizedException, WorkbasketNotFoundException, ClassificationNotFoundException,
-        TaskAlreadyExistException, InvalidArgumentException;
+  /**
+   * Persists a not persisted Task which does not exist already.
+   *
+   * @param taskToCreate the transient task object to be persisted
+   * @return the created and persisted task
+   * @throws TaskAlreadyExistException when the Task does already exist.
+   * @throws NotAuthorizedException thrown if the current user is not authorized to create that task
+   * @throws WorkbasketNotFoundException thrown if the work basket referenced by the task is not
+   *     found
+   * @throws ClassificationNotFoundException thrown if the {@link Classification} referenced by the
+   *     task is not found
+   * @throws InvalidArgumentException thrown if the primary ObjectReference is invalid
+   */
+  Task createTask(Task taskToCreate)
+      throws NotAuthorizedException, WorkbasketNotFoundException, ClassificationNotFoundException,
+          TaskAlreadyExistException, InvalidArgumentException;
 
-    /**
-     * Get the details of a task by Id without checking permissions.
-     *
-     * @param taskId
-     *            the id of the task
-     * @return the Task
-     * @throws TaskNotFoundException
-     *             thrown of the {@link Task} with taskId is not found
-     * @throws NotAuthorizedException
-     *             if the current user has no READ permission for the workbasket the task is in.
-     */
-    Task getTask(String taskId) throws TaskNotFoundException, NotAuthorizedException;
+  /**
+   * Get the details of a task by Id without checking permissions.
+   *
+   * @param taskId the id of the task
+   * @return the Task
+   * @throws TaskNotFoundException thrown of the {@link Task} with taskId is not found
+   * @throws NotAuthorizedException if the current user has no READ permission for the workbasket
+   *     the task is in.
+   */
+  Task getTask(String taskId) throws TaskNotFoundException, NotAuthorizedException;
 
-    /**
-     * Transfer a task to another work basket. The transfer sets the transferred flag and resets the read flag.
-     *
-     * @param taskId
-     *            The id of the {@link Task} to be transferred
-     * @param destinationWorkbasketId
-     *            The Id of the target work basket
-     * @return the transferred task
-     * @throws TaskNotFoundException
-     *             Thrown if the {@link Task} with taskId was not found.
-     * @throws WorkbasketNotFoundException
-     *             Thrown if the target work basket was not found.
-     * @throws NotAuthorizedException
-     *             Thrown if the current user is not authorized to transfer this {@link Task} to the target work basket
-     * @throws InvalidStateException
-     *             Thrown if the task is in a state which does not allow transferring
-     */
-    Task transfer(String taskId, String destinationWorkbasketId)
-        throws TaskNotFoundException, WorkbasketNotFoundException, NotAuthorizedException, InvalidStateException;
+  /**
+   * Transfer a task to another work basket. The transfer sets the transferred flag and resets the
+   * read flag.
+   *
+   * @param taskId The id of the {@link Task} to be transferred
+   * @param destinationWorkbasketId The Id of the target work basket
+   * @return the transferred task
+   * @throws TaskNotFoundException Thrown if the {@link Task} with taskId was not found.
+   * @throws WorkbasketNotFoundException Thrown if the target work basket was not found.
+   * @throws NotAuthorizedException Thrown if the current user is not authorized to transfer this
+   *     {@link Task} to the target work basket
+   * @throws InvalidStateException Thrown if the task is in a state which does not allow
+   *     transferring
+   */
+  Task transfer(String taskId, String destinationWorkbasketId)
+      throws TaskNotFoundException, WorkbasketNotFoundException, NotAuthorizedException,
+          InvalidStateException;
 
-    /**
-     * Transfer a task to another work basket. The transfer sets the transferred flag and resets the read flag.
-     *
-     * @param taskId
-     *            The id of the {@link Task} to be transferred
-     * @param workbasketKey
-     *            The key of the target work basket
-     * @param domain
-     *            The domain of the target work basket
-     * @return the transferred task
-     * @throws TaskNotFoundException
-     *             Thrown if the {@link Task} with taskId was not found.
-     * @throws WorkbasketNotFoundException
-     *             Thrown if the target work basket was not found.
-     * @throws NotAuthorizedException
-     *             Thrown if the current user is not authorized to transfer this {@link Task} to the target work basket
-     * @throws InvalidStateException
-     *             Thrown if the task is in a state which does not allow transferring
-     */
-    Task transfer(String taskId, String workbasketKey, String domain)
-        throws TaskNotFoundException, WorkbasketNotFoundException, NotAuthorizedException, InvalidStateException;
+  /**
+   * Transfer a task to another work basket. The transfer sets the transferred flag and resets the
+   * read flag.
+   *
+   * @param taskId The id of the {@link Task} to be transferred
+   * @param workbasketKey The key of the target work basket
+   * @param domain The domain of the target work basket
+   * @return the transferred task
+   * @throws TaskNotFoundException Thrown if the {@link Task} with taskId was not found.
+   * @throws WorkbasketNotFoundException Thrown if the target work basket was not found.
+   * @throws NotAuthorizedException Thrown if the current user is not authorized to transfer this
+   *     {@link Task} to the target work basket
+   * @throws InvalidStateException Thrown if the task is in a state which does not allow
+   *     transferring
+   */
+  Task transfer(String taskId, String workbasketKey, String domain)
+      throws TaskNotFoundException, WorkbasketNotFoundException, NotAuthorizedException,
+          InvalidStateException;
 
-    /**
-     * Marks a task as read.
-     *
-     * @param taskId
-     *            the id of the task to be updated
-     * @param isRead
-     *            the new status of the read flag.
-     * @return the updated Task
-     * @throws TaskNotFoundException
-     *             Thrown if the {@link Task} with taskId was not found
-     * @throws NotAuthorizedException
-     *             if the current user has no read permission for the workbasket the task is in
-     */
-    Task setTaskRead(String taskId, boolean isRead)
-        throws TaskNotFoundException, NotAuthorizedException;
+  /**
+   * Marks a task as read.
+   *
+   * @param taskId the id of the task to be updated
+   * @param isRead the new status of the read flag.
+   * @return the updated Task
+   * @throws TaskNotFoundException Thrown if the {@link Task} with taskId was not found
+   * @throws NotAuthorizedException if the current user has no read permission for the workbasket
+   *     the task is in
+   */
+  Task setTaskRead(String taskId, boolean isRead)
+      throws TaskNotFoundException, NotAuthorizedException;
 
-    /**
-     * This method provides a query builder for quering the database.
-     *
-     * @return a {@link TaskQuery}
-     */
-    TaskQuery createTaskQuery();
+  /**
+   * This method provides a query builder for quering the database.
+   *
+   * @return a {@link TaskQuery}
+   */
+  TaskQuery createTaskQuery();
 
-    /**
-     * Returns a not persisted instance of {@link Task}.
-     * The returned task has no workbasket Id set. When createTask() is
-     * invoked for this task, TaskService will call the TaskRouting SPI to
-     * determine a workbasket for the task. If the TaskRouting API is not active,
-     * e.g. because no TaskRouter is registered, or the TaskRouter(s) don't find a workbasket,
-     * the task will not be persisted.
-     *
-     * @return an empty new Task
-     */
-    Task newTask();
+  /**
+   * Returns a not persisted instance of {@link Task}. The returned task has no workbasket Id set.
+   * When createTask() is invoked for this task, TaskService will call the TaskRouting SPI to
+   * determine a workbasket for the task. If the TaskRouting API is not active, e.g. because no
+   * TaskRouter is registered, or the TaskRouter(s) don't find a workbasket, the task will not be
+   * persisted.
+   *
+   * @return an empty new Task
+   */
+  Task newTask();
 
-    /**
-     * Returns a not persisted instance of {@link Task}.
-     *
-     * @param workbasketId
-     *            the id of the workbasket to which the task belongs
-     * @return an empty new Task
-     */
-    Task newTask(String workbasketId);
+  /**
+   * Returns a not persisted instance of {@link Task}.
+   *
+   * @param workbasketId the id of the workbasket to which the task belongs
+   * @return an empty new Task
+   */
+  Task newTask(String workbasketId);
 
-    /**
-     * Returns a not persisted instance of {@link Task}.
-     *
-     * @param workbasketKey
-     *            the key of the workbasket to which the task belongs
-     * @param domain
-     *            the domain of the workbasket to which the task belongs
-     * @return an empty new Task
-     */
-    Task newTask(String workbasketKey, String domain);
+  /**
+   * Returns a not persisted instance of {@link Task}.
+   *
+   * @param workbasketKey the key of the workbasket to which the task belongs
+   * @param domain the domain of the workbasket to which the task belongs
+   * @return an empty new Task
+   */
+  Task newTask(String workbasketKey, String domain);
 
-    /**
-     * Returns a not persisted instance of {@link Attachment}.
-     *
-     * @return an empty new Attachment
-     */
-    Attachment newAttachment();
+  /**
+   * Returns a not persisted instance of {@link Attachment}.
+   *
+   * @return an empty new Attachment
+   */
+  Attachment newAttachment();
 
-    /**
-     * Update a task.
-     *
-     * @param task
-     *            the task to be updated in the database
-     * @return the updated task
-     * @throws InvalidArgumentException
-     *             if the task to be updated contains invalid properties like e.g. invalid object references
-     * @throws TaskNotFoundException
-     *             if the id of the task is not found in the database
-     * @throws ConcurrencyException
-     *             if the task has already been updated by another user
-     * @throws ClassificationNotFoundException
-     *             if the updated task refers to a classification that cannot be found
-     * @throws NotAuthorizedException
-     *             if the current user is not authorized to update the task
-     * @throws AttachmentPersistenceException
-     *             if an Attachment with ID will be added multiple times without using the task-methods.
-     */
-    Task updateTask(Task task) throws InvalidArgumentException, TaskNotFoundException, ConcurrencyException,
-    ClassificationNotFoundException, NotAuthorizedException, AttachmentPersistenceException;
+  /**
+   * Update a task.
+   *
+   * @param task the task to be updated in the database
+   * @return the updated task
+   * @throws InvalidArgumentException if the task to be updated contains invalid properties like
+   *     e.g. invalid object references
+   * @throws TaskNotFoundException if the id of the task is not found in the database
+   * @throws ConcurrencyException if the task has already been updated by another user
+   * @throws ClassificationNotFoundException if the updated task refers to a classification that
+   *     cannot be found
+   * @throws NotAuthorizedException if the current user is not authorized to update the task
+   * @throws AttachmentPersistenceException if an Attachment with ID will be added multiple times
+   *     without using the task-methods.
+   */
+  Task updateTask(Task task)
+      throws InvalidArgumentException, TaskNotFoundException, ConcurrencyException,
+          ClassificationNotFoundException, NotAuthorizedException, AttachmentPersistenceException;
 
-    /**
-     * Transfers a list of tasks to an other workbasket. Exceptions will be thrown if the caller got no permissions on
-     * the target or it doesn´t exist. Other Exceptions will be stored and returned in the end.
-     *
-     * @param destinationWorkbasketId
-     *            target workbasket id
-     * @param taskIds
-     *            source task which will be moved
-     * @return Bulkresult with ID and Error in it for failed transactions.
-     * @throws NotAuthorizedException
-     *             if the caller hasn´t permissions on tarket WB.
-     * @throws InvalidArgumentException
-     *             if the method paramesters are EMPTY or NULL.
-     * @throws WorkbasketNotFoundException
-     *             if the target WB can´t be found.
-     */
-    BulkOperationResults<String, TaskanaException> transferTasks(String destinationWorkbasketId, List<String> taskIds)
-        throws NotAuthorizedException, InvalidArgumentException, WorkbasketNotFoundException;
+  /**
+   * Transfers a list of tasks to an other workbasket. Exceptions will be thrown if the caller got
+   * no permissions on the target or it doesn´t exist. Other Exceptions will be stored and returned
+   * in the end.
+   *
+   * @param destinationWorkbasketId target workbasket id
+   * @param taskIds source task which will be moved
+   * @return Bulkresult with ID and Error in it for failed transactions.
+   * @throws NotAuthorizedException if the caller hasn´t permissions on tarket WB.
+   * @throws InvalidArgumentException if the method paramesters are EMPTY or NULL.
+   * @throws WorkbasketNotFoundException if the target WB can´t be found.
+   */
+  BulkOperationResults<String, TaskanaException> transferTasks(
+      String destinationWorkbasketId, List<String> taskIds)
+      throws NotAuthorizedException, InvalidArgumentException, WorkbasketNotFoundException;
 
-    /**
-     * Transfers a list of tasks to an other workbasket. Exceptions will be thrown if the caller got no permissions on
-     * the target or it doesn´t exist. Other Exceptions will be stored and returned in the end.
-     *
-     * @param destinationWorkbasketKey
-     *            target workbasket key
-     * @param destinationWorkbasketDomain
-     *            target workbasket domain
-     * @param taskIds
-     *            source task which will be moved
-     * @return Bulkresult with ID and Error in it for failed transactions.
-     * @throws NotAuthorizedException
-     *             if the caller hasn´t permissions on tarket WB.
-     * @throws InvalidArgumentException
-     *             if the method paramesters are EMPTY or NULL.
-     * @throws WorkbasketNotFoundException
-     *             if the target WB can´t be found.
-     */
-    BulkOperationResults<String, TaskanaException> transferTasks(String destinationWorkbasketKey,
-        String destinationWorkbasketDomain, List<String> taskIds)
-            throws NotAuthorizedException, InvalidArgumentException, WorkbasketNotFoundException;
+  /**
+   * Transfers a list of tasks to an other workbasket. Exceptions will be thrown if the caller got
+   * no permissions on the target or it doesn´t exist. Other Exceptions will be stored and returned
+   * in the end.
+   *
+   * @param destinationWorkbasketKey target workbasket key
+   * @param destinationWorkbasketDomain target workbasket domain
+   * @param taskIds source task which will be moved
+   * @return Bulkresult with ID and Error in it for failed transactions.
+   * @throws NotAuthorizedException if the caller hasn´t permissions on tarket WB.
+   * @throws InvalidArgumentException if the method paramesters are EMPTY or NULL.
+   * @throws WorkbasketNotFoundException if the target WB can´t be found.
+   */
+  BulkOperationResults<String, TaskanaException> transferTasks(
+      String destinationWorkbasketKey, String destinationWorkbasketDomain, List<String> taskIds)
+      throws NotAuthorizedException, InvalidArgumentException, WorkbasketNotFoundException;
 
-    /**
-     * Deletes the task with the given Id.
-     *
-     * @param taskId
-     *            The Id of the task to delete.
-     * @throws TaskNotFoundException
-     *             If the given Id does not refer to an existing task.
-     * @throws InvalidStateException
-     *             If the state of the referenced task is not Completed.
-     * @throws NotAuthorizedException
-     *             if the current user is not member of role ADMIN
-     */
-    void deleteTask(String taskId)
-        throws TaskNotFoundException, InvalidStateException, NotAuthorizedException;
+  /**
+   * Deletes the task with the given Id.
+   *
+   * @param taskId The Id of the task to delete.
+   * @throws TaskNotFoundException If the given Id does not refer to an existing task.
+   * @throws InvalidStateException If the state of the referenced task is not Completed.
+   * @throws NotAuthorizedException if the current user is not member of role ADMIN
+   */
+  void deleteTask(String taskId)
+      throws TaskNotFoundException, InvalidStateException, NotAuthorizedException;
 
-    /**
-     * Deletes the task with the given Id even if it is not completed.
-     *
-     * @param taskId
-     *            The Id of the task to delete.
-     * @throws TaskNotFoundException
-     *             If the given Id does not refer to an existing task.
-     * @throws InvalidStateException
-     *             If the state of the referenced task is not Completed and forceDelet is false.
-     * @throws NotAuthorizedException
-     *             if the current user is not member of role ADMIN
-     */
-    void forceDeleteTask(String taskId)
-        throws TaskNotFoundException, InvalidStateException, NotAuthorizedException;
+  /**
+   * Deletes the task with the given Id even if it is not completed.
+   *
+   * @param taskId The Id of the task to delete.
+   * @throws TaskNotFoundException If the given Id does not refer to an existing task.
+   * @throws InvalidStateException If the state of the referenced task is not Completed and
+   *     forceDelet is false.
+   * @throws NotAuthorizedException if the current user is not member of role ADMIN
+   */
+  void forceDeleteTask(String taskId)
+      throws TaskNotFoundException, InvalidStateException, NotAuthorizedException;
 
-    /**
-     * Deletes a list of tasks.
-     *
-     * @param tasks
-     *            the ids of the tasks to delete.
-     * @return the result of the operations with Id and Exception for each failed task deletion.
-     * @throws InvalidArgumentException
-     *             if the TaskIds parameter is NULL
-     */
-    BulkOperationResults<String, TaskanaException> deleteTasks(List<String> tasks) throws InvalidArgumentException;
+  /**
+   * Deletes a list of tasks.
+   *
+   * @param tasks the ids of the tasks to delete.
+   * @return the result of the operations with Id and Exception for each failed task deletion.
+   * @throws InvalidArgumentException if the TaskIds parameter is NULL
+   */
+  BulkOperationResults<String, TaskanaException> deleteTasks(List<String> tasks)
+      throws InvalidArgumentException;
 
-    /**
-     * Completes a list of tasks.
-     *
-     * @param taskIds
-     *            of the tasks which should be completed.
-     * @return the result of the operations with Id and Exception for each failed task completion.
-     * @throws InvalidArgumentException
-     *             If the taskId parameter is NULL.
-     */
-    BulkOperationResults<String, TaskanaException> completeTasks(List<String> taskIds)
-        throws InvalidArgumentException;
+  /**
+   * Completes a list of tasks.
+   *
+   * @param taskIds of the tasks which should be completed.
+   * @return the result of the operations with Id and Exception for each failed task completion.
+   * @throws InvalidArgumentException If the taskId parameter is NULL.
+   */
+  BulkOperationResults<String, TaskanaException> completeTasks(List<String> taskIds)
+      throws InvalidArgumentException;
 
-    /**
-     * Updates tasks with a matching {@link ObjectReference}.
-     *
-     * @param selectionCriteria
-     *            the {@link ObjectReference} that is used to select the tasks.
-     * @param customFieldsToUpdate
-     *            a {@link Map} that contains as key the identification of the custom field and as value the
-     *            corresponding new value of that custom field. The key for identification of the custom field must be a
-     *            String with value "1", "2" ... "16" as in the setCustomAttribute or getCustomAttribute method of
-     *            {@link Task}
-     * @return a list of the Ids of all modified tasks
-     * @throws InvalidArgumentException
-     *             If the customFieldsToUpdate map contains an invalid key or if the selectionCriteria is invalid
-     */
-    List<String> updateTasks(ObjectReference selectionCriteria,
-        Map<String, String> customFieldsToUpdate) throws InvalidArgumentException;
+  /**
+   * Updates tasks with a matching {@link ObjectReference}.
+   *
+   * @param selectionCriteria the {@link ObjectReference} that is used to select the tasks.
+   * @param customFieldsToUpdate a {@link Map} that contains as key the identification of the custom
+   *     field and as value the corresponding new value of that custom field. The key for
+   *     identification of the custom field must be a String with value "1", "2" ... "16" as in the
+   *     setCustomAttribute or getCustomAttribute method of {@link Task}
+   * @return a list of the Ids of all modified tasks
+   * @throws InvalidArgumentException If the customFieldsToUpdate map contains an invalid key or if
+   *     the selectionCriteria is invalid
+   */
+  List<String> updateTasks(
+      ObjectReference selectionCriteria, Map<String, String> customFieldsToUpdate)
+      throws InvalidArgumentException;
 
-    /**
-     * Updates tasks with matching taskIds.
-     *
-     * @param taskIds
-     *            the taskIds that are used to select the tasks.
-     * @param customFieldsToUpdate
-     *            a {@link Map} that contains as key the identification of the custom field and as value the
-     *            corresponding new value of that custom field. The key for identification of the custom field must be a
-     *            String with value "1", "2" ... "16" as in the setCustomAttribute or getCustomAttribute method of
-     *            {@link Task}
-     * @return a list of the Ids of all modified tasks
-     * @throws InvalidArgumentException
-     *             If the customFieldsToUpdate map contains an invalid key or if the selectionCriteria is invalid
-     */
-    List<String> updateTasks(List<String> taskIds,
-        Map<String, String> customFieldsToUpdate) throws InvalidArgumentException;
-
-    /**
-     * Sets the callback state on a list of tasks.
-     * Note: this method is primarily intended to be used by the TaskanaAdapter
-     *
-     * @param externalIds  the EXTERNAL_IDs of the tasks on which the callback state is set.
-     * @param state  the callback state that is to be set on the tasks
-     *
-     * @return the result of the operations with Id and Exception for each failed task deletion.
-     */
-    BulkOperationResults<String, TaskanaException> setCallbackStateForTasks(List<String> externalIds, CallbackState state);
+  /**
+   * Updates tasks with matching taskIds.
+   *
+   * @param taskIds the taskIds that are used to select the tasks.
+   * @param customFieldsToUpdate a {@link Map} that contains as key the identification of the custom
+   *     field and as value the corresponding new value of that custom field. The key for
+   *     identification of the custom field must be a String with value "1", "2" ... "16" as in the
+   *     setCustomAttribute or getCustomAttribute method of {@link Task}
+   * @return a list of the Ids of all modified tasks
+   * @throws InvalidArgumentException If the customFieldsToUpdate map contains an invalid key or if
+   *     the selectionCriteria is invalid
+   */
+  List<String> updateTasks(List<String> taskIds, Map<String, String> customFieldsToUpdate)
+      throws InvalidArgumentException;
 
+  /**
+   * Sets the callback state on a list of tasks. Note: this method is primarily intended to be used
+   * by the TaskanaAdapter
+   *
+   * @param externalIds the EXTERNAL_IDs of the tasks on which the callback state is set.
+   * @param state the callback state that is to be set on the tasks
+   * @return the result of the operations with Id and Exception for each failed task deletion.
+   */
+  BulkOperationResults<String, TaskanaException> setCallbackStateForTasks(
+      List<String> externalIds, CallbackState state);
 }

lib/taskana-core/src/main/java/pro/taskana/TaskState.java

@@ -1,8 +1,8 @@
 package pro.taskana;
 
-/**
- * This enum contains all status of the tasks.
- */
+/** This enum contains all status of the tasks. */
 public enum TaskState {
-    READY, CLAIMED, COMPLETED
+  READY,
+  CLAIMED,
+  COMPLETED
 }

lib/taskana-core/src/main/java/pro/taskana/TaskSummary.java

@@ -6,182 +6,180 @@ import java.util.List;
 import pro.taskana.exceptions.InvalidArgumentException;
 
 /**
- * Interface for TaskSummary. This is a specific short model-object which only contains the most important information.
+ * Interface for TaskSummary. This is a specific short model-object which only contains the most
+ * important information.
  */
 public interface TaskSummary {
 
-    /**
-     * Gets the id of the task.
-     *
-     * @return taskId
-     */
-    String getTaskId();
+  /**
+   * Gets the id of the task.
+   *
+   * @return taskId
+   */
+  String getTaskId();
 
-    /**
-     * Gets the external id of the task.
-     *
-     * @return the external Id
-     */
-    String getExternalId();
+  /**
+   * Gets the external id of the task.
+   *
+   * @return the external Id
+   */
+  String getExternalId();
 
-    /**
-     * Gets the name of the task-creator.
-     *
-     * @return creator
-     */
-    String getCreator();
+  /**
+   * Gets the name of the task-creator.
+   *
+   * @return creator
+   */
+  String getCreator();
 
-    /**
-     * Gets the time when the task was created.
-     *
-     * @return the created Instant
-     */
-    Instant getCreated();
+  /**
+   * Gets the time when the task was created.
+   *
+   * @return the created Instant
+   */
+  Instant getCreated();
 
-    /**
-     * Gets the time when the task was claimed.
-     *
-     * @return the claimed Instant
-     */
-    Instant getClaimed();
+  /**
+   * Gets the time when the task was claimed.
+   *
+   * @return the claimed Instant
+   */
+  Instant getClaimed();
 
-    /**
-     * Gets the time when the task was completed.
-     *
-     * @return the completed Instant
-     */
-    Instant getCompleted();
+  /**
+   * Gets the time when the task was completed.
+   *
+   * @return the completed Instant
+   */
+  Instant getCompleted();
 
-    /**
-     * Gets the time when the task was last modified.
-     *
-     * @return the last modified Instant
-     */
-    Instant getModified();
+  /**
+   * Gets the time when the task was last modified.
+   *
+   * @return the last modified Instant
+   */
+  Instant getModified();
 
-    /**
-     * Gets the time when the task is planned to be executed.
-     *
-     * @return the planned Instant
-     */
-    Instant getPlanned();
+  /**
+   * Gets the time when the task is planned to be executed.
+   *
+   * @return the planned Instant
+   */
+  Instant getPlanned();
 
-    /**
-     * Gets the time when the task is due.
-     *
-     * @return the due Instant
-     */
-    Instant getDue();
+  /**
+   * Gets the time when the task is due.
+   *
+   * @return the due Instant
+   */
+  Instant getDue();
 
-    /**
-     * Gets the name of the task.
-     *
-     * @return the task's name
-     */
-    String getName();
+  /**
+   * Gets the name of the task.
+   *
+   * @return the task's name
+   */
+  String getName();
 
-    /**
-     * Gets the note attached to the task.
-     *
-     * @return the task's note
-     */
-    String getNote();
+  /**
+   * Gets the note attached to the task.
+   *
+   * @return the task's note
+   */
+  String getNote();
 
-    /**
-     * Gets the priority of the task.
-     *
-     * @return the task's priority
-     */
-    int getPriority();
+  /**
+   * Gets the priority of the task.
+   *
+   * @return the task's priority
+   */
+  int getPriority();
 
-    /**
-     * Gets the state of the task.
-     *
-     * @return the task's state
-     */
-    TaskState getState();
+  /**
+   * Gets the state of the task.
+   *
+   * @return the task's state
+   */
+  TaskState getState();
 
-    /**
-     * Gets the classification summary of the task.
-     *
-     * @return the task's classificationSummary
-     */
-    ClassificationSummary getClassificationSummary();
+  /**
+   * Gets the classification summary of the task.
+   *
+   * @return the task's classificationSummary
+   */
+  ClassificationSummary getClassificationSummary();
 
-    /**
-     * Gets the workbasket summary of the task.
-     *
-     * @return the task's workbasketSummary
-     */
-    WorkbasketSummary getWorkbasketSummary();
+  /**
+   * Gets the workbasket summary of the task.
+   *
+   * @return the task's workbasketSummary
+   */
+  WorkbasketSummary getWorkbasketSummary();
 
-    /**
-     * Gets the attachment summaries of the task.
-     *
-     * @return the task's attachment summaries
-     */
-    List<AttachmentSummary> getAttachmentSummaries();
+  /**
+   * Gets the attachment summaries of the task.
+   *
+   * @return the task's attachment summaries
+   */
+  List<AttachmentSummary> getAttachmentSummaries();
 
-    /**
-     * Gets the domain of the task.
-     *
-     * @return the task's domain
-     */
-    String getDomain();
+  /**
+   * Gets the domain of the task.
+   *
+   * @return the task's domain
+   */
+  String getDomain();
 
-    /**
-     * Gets the businessProcessId of the task.
-     *
-     * @return the task's businessProcessId
-     */
-    String getBusinessProcessId();
+  /**
+   * Gets the businessProcessId of the task.
+   *
+   * @return the task's businessProcessId
+   */
+  String getBusinessProcessId();
 
-    /**
-     * Gets the parentBusinessProcessId of the task.
-     *
-     * @return the task's parentBusinessProcessId
-     */
-    String getParentBusinessProcessId();
+  /**
+   * Gets the parentBusinessProcessId of the task.
+   *
+   * @return the task's parentBusinessProcessId
+   */
+  String getParentBusinessProcessId();
 
-    /**
-     * Gets the owner of the task.
-     *
-     * @return the task's owner
-     */
-    String getOwner();
+  /**
+   * Gets the owner of the task.
+   *
+   * @return the task's owner
+   */
+  String getOwner();
 
-    /**
-     * Gets the primary ObjectReference of the task.
-     *
-     * @return the task's primary ObjectReference
-     */
-    ObjectReference getPrimaryObjRef();
+  /**
+   * Gets the primary ObjectReference of the task.
+   *
+   * @return the task's primary ObjectReference
+   */
+  ObjectReference getPrimaryObjRef();
 
-    /**
-     * Gets the isRead flag of the task.
-     *
-     * @return the task's isRead flag
-     */
-    boolean isRead();
+  /**
+   * Gets the isRead flag of the task.
+   *
+   * @return the task's isRead flag
+   */
+  boolean isRead();
 
-    /**
-     * Gets the isTransferred flag of the task.
-     *
-     * @return the task's isTransferred flag.
-     */
-    boolean isTransferred();
-
-    /**
-     * Gets the custom attribute number num of the task.
-     *
-     * @param num
-     *            identifies which custom attribute is requested. Taskana concatenates "custom_" with num and the
-     *            resulting String must match the name of the database column that contains the custom attribute. Valid
-     *            values are "1", "2" .. "16"
-     * @return the value of custom attribute number num
-     * @throws InvalidArgumentException
-     *             if num has not a value of "1", "2" ... "16"
-     */
-    String getCustomAttribute(String num) throws InvalidArgumentException;
+  /**
+   * Gets the isTransferred flag of the task.
+   *
+   * @return the task's isTransferred flag.
+   */
+  boolean isTransferred();
 
+  /**
+   * Gets the custom attribute number num of the task.
+   *
+   * @param num identifies which custom attribute is requested. Taskana concatenates "custom_" with
+   *     num and the resulting String must match the name of the database column that contains the
+   *     custom attribute. Valid values are "1", "2" .. "16"
+   * @return the value of custom attribute number num
+   * @throws InvalidArgumentException if num has not a value of "1", "2" ... "16"
+   */
+  String getCustomAttribute(String num) throws InvalidArgumentException;
 }

lib/taskana-core/src/main/java/pro/taskana/TaskanaEngine.java

@@ -5,123 +5,116 @@ import java.sql.SQLException;
 import pro.taskana.configuration.TaskanaEngineConfiguration;
 import pro.taskana.exceptions.NotAuthorizedException;
 
-/**
- * The TaskanaEngine represents an overall set of all needed services.
- */
+/** The TaskanaEngine represents an overall set of all needed services. */
 public interface TaskanaEngine {
 
-    /**
-     * The TaskService can be used for operations on all Tasks.
-     *
-     * @return the TaskService
-     */
-    TaskService getTaskService();
+  /**
+   * The TaskService can be used for operations on all Tasks.
+   *
+   * @return the TaskService
+   */
+  TaskService getTaskService();
 
-    /**
-     * The TaskMonitorService can be used for monitoring Tasks.
-     *
-     * @return the TaskMonitorService
-     */
-    TaskMonitorService getTaskMonitorService();
+  /**
+   * The TaskMonitorService can be used for monitoring Tasks.
+   *
+   * @return the TaskMonitorService
+   */
+  TaskMonitorService getTaskMonitorService();
 
-    /**
-     * The WorkbasketService can be used for operations on all Workbaskets.
-     *
-     * @return the TaskService
-     */
-    WorkbasketService getWorkbasketService();
+  /**
+   * The WorkbasketService can be used for operations on all Workbaskets.
+   *
+   * @return the TaskService
+   */
+  WorkbasketService getWorkbasketService();
 
-    /**
-     * The ClassificationService can be used for operations on all Categories.
-     *
-     * @return the TaskService
-     */
-    ClassificationService getClassificationService();
+  /**
+   * The ClassificationService can be used for operations on all Categories.
+   *
+   * @return the TaskService
+   */
+  ClassificationService getClassificationService();
 
-    /**
-     * The JobService can be user for all job operations.
-     *
-     * @return the JobService
-     */
-    JobService getJobService();
+  /**
+   * The JobService can be user for all job operations.
+   *
+   * @return the JobService
+   */
+  JobService getJobService();
 
-    /**
-     * The Taskana configuration.
-     *
-     * @return the TaskanaConfiguration
-     */
-    TaskanaEngineConfiguration getConfiguration();
+  /**
+   * The Taskana configuration.
+   *
+   * @return the TaskanaConfiguration
+   */
+  TaskanaEngineConfiguration getConfiguration();
 
-    /**
-     * Checks if the history plugin is enabled.
-     *
-     * @return true if the history is enabled. Otherwise false.
-     */
-    boolean isHistoryEnabled();
+  /**
+   * Checks if the history plugin is enabled.
+   *
+   * @return true if the history is enabled. Otherwise false.
+   */
+  boolean isHistoryEnabled();
 
-    /**
-     * sets the connection management mode.
-     *
-     * @param mode
-     *            the connection management mode Valid values are:
-     *            <ul>
-     *            <li>PARTICIPATE - taskana participates in global transaction. This is the default mode.</li>
-     *            <li>AUTOCOMMIT - taskana commits each API call separately</li>
-     *            <li>EXPLICIT - commit processing is managed explicitly by the client</li>
-     *            </ul>
-     */
-    void setConnectionManagementMode(ConnectionManagementMode mode);
+  /**
+   * sets the connection management mode.
+   *
+   * @param mode the connection management mode Valid values are:
+   *     <ul>
+   *       <li>PARTICIPATE - taskana participates in global transaction. This is the default mode.
+   *       <li>AUTOCOMMIT - taskana commits each API call separately
+   *       <li>EXPLICIT - commit processing is managed explicitly by the client
+   *     </ul>
+   */
+  void setConnectionManagementMode(ConnectionManagementMode mode);
 
-    /**
-     * Set the connection to be used by taskana in mode CONNECTION_MANAGED_EXTERNALLY. If this Api is called, taskana
-     * uses the connection passed by the client for all subsequent API calls until the client resets this connection.
-     * Control over commit and rollback of the connection is the responsibility of the client. In order to close the
-     * connection, closeConnection() or setConnection(null) has to be called.
-     *
-     * @param connection
-     *            - The java.sql.Connection that is controlled by the client
-     * @throws SQLException
-     *             if a database access error occurs
-     */
-    void setConnection(java.sql.Connection connection) throws SQLException;
+  /**
+   * Set the connection to be used by taskana in mode CONNECTION_MANAGED_EXTERNALLY. If this Api is
+   * called, taskana uses the connection passed by the client for all subsequent API calls until the
+   * client resets this connection. Control over commit and rollback of the connection is the
+   * responsibility of the client. In order to close the connection, closeConnection() or
+   * setConnection(null) has to be called.
+   *
+   * @param connection - The java.sql.Connection that is controlled by the client
+   * @throws SQLException if a database access error occurs
+   */
+  void setConnection(java.sql.Connection connection) throws SQLException;
 
-    /**
-     * Closes the client's connection, sets it to null and switches to mode PARTICIPATE. Only applicable in mode
-     * EXPLICIT. Has the same effect as setConnection(null).
-     */
-    void closeConnection();
+  /**
+   * Closes the client's connection, sets it to null and switches to mode PARTICIPATE. Only
+   * applicable in mode EXPLICIT. Has the same effect as setConnection(null).
+   */
+  void closeConnection();
 
-    /**
-     * check whether the current user is member of one of the roles specified.
-     *
-     * @param roles
-     *            The roles that are checked for membership of the current user
-     * @return true if the current user is a member of at least one of the specified groups
-     */
-    boolean isUserInRole(TaskanaRole... roles);
+  /**
+   * check whether the current user is member of one of the roles specified.
+   *
+   * @param roles The roles that are checked for membership of the current user
+   * @return true if the current user is a member of at least one of the specified groups
+   */
+  boolean isUserInRole(TaskanaRole... roles);
 
-    /**
-     * Checks whether current user is member of any of the specified roles.
-     *
-     * @param roles
-     *            The roles that are checked for membership of the current user
-     * @throws NotAuthorizedException
-     *             If the current user is not member of any specified role
-     */
-    void checkRoleMembership(TaskanaRole... roles) throws NotAuthorizedException;
-
-    /**
-     * Connection management mode. Controls the connection handling of taskana
-     * <ul>
-     * <li>PARTICIPATE - taskana participates in global transaction. This is the default mode</li>
-     * <li>AUTOCOMMIT - taskana commits each API call separately</li>
-     * <li>EXPLICIT - commit processing is managed explicitly by the client</li>
-     * </ul>
-     */
-    enum ConnectionManagementMode {
-        PARTICIPATE,
-        AUTOCOMMIT,
-        EXPLICIT
-    }
+  /**
+   * Checks whether current user is member of any of the specified roles.
+   *
+   * @param roles The roles that are checked for membership of the current user
+   * @throws NotAuthorizedException If the current user is not member of any specified role
+   */
+  void checkRoleMembership(TaskanaRole... roles) throws NotAuthorizedException;
 
+  /**
+   * Connection management mode. Controls the connection handling of taskana
+   *
+   * <ul>
+   *   <li>PARTICIPATE - taskana participates in global transaction. This is the default mode
+   *   <li>AUTOCOMMIT - taskana commits each API call separately
+   *   <li>EXPLICIT - commit processing is managed explicitly by the client
+   * </ul>
+   */
+  enum ConnectionManagementMode {
+    PARTICIPATE,
+    AUTOCOMMIT,
+    EXPLICIT
+  }
 }

lib/taskana-core/src/main/java/pro/taskana/TaskanaRole.java

@@ -6,36 +6,33 @@ import java.util.stream.Collectors;
 
 import pro.taskana.exceptions.SystemException;
 
-/**
- * This enum contains all roles that are known to taskana.
- */
+/** This enum contains all roles that are known to taskana. */
 public enum TaskanaRole {
-    USER("taskana.roles.user"),
-    BUSINESS_ADMIN("taskana.roles.businessadmin"),
-    ADMIN("taskana.roles.admin"),
-    MONITOR("taskana.roles.monitor");
+  USER("taskana.roles.user"),
+  BUSINESS_ADMIN("taskana.roles.businessadmin"),
+  ADMIN("taskana.roles.admin"),
+  MONITOR("taskana.roles.monitor");
 
-    private final String propertyName;
+  private final String propertyName;
 
-    TaskanaRole(String propertyName) {
-        this.propertyName = propertyName;
-    }
+  TaskanaRole(String propertyName) {
+    this.propertyName = propertyName;
+  }
 
-    public static TaskanaRole fromPropertyName(String name) {
-        return Arrays.stream(TaskanaRole.values())
-            .filter(x -> x.propertyName.equalsIgnoreCase(name))
-            .findFirst()
-            .orElseThrow(() -> new SystemException(
-                "Internal System error when processing role property " + name));
-    }
+  public static TaskanaRole fromPropertyName(String name) {
+    return Arrays.stream(TaskanaRole.values())
+        .filter(x -> x.propertyName.equalsIgnoreCase(name))
+        .findFirst()
+        .orElseThrow(
+            () ->
+                new SystemException("Internal System error when processing role property " + name));
+  }
 
-    public static List<String> getValidPropertyNames() {
-        return Arrays.stream(values())
-            .map(TaskanaRole::getPropertyName)
-            .collect(Collectors.toList());
-    }
+  public static List<String> getValidPropertyNames() {
+    return Arrays.stream(values()).map(TaskanaRole::getPropertyName).collect(Collectors.toList());
+  }
 
-    public String getPropertyName() {
-        return propertyName;
-    }
+  public String getPropertyName() {
+    return propertyName;
+  }
 }

lib/taskana-core/src/main/java/pro/taskana/TimeInterval.java

@@ -3,95 +3,94 @@ package pro.taskana;
 import java.time.Instant;
 
 /**
- * Capture a time interval. A fixed interval has defined begin and end Instant. An open ended interval has either begin
- * == null or end ==null.
+ * Capture a time interval. A fixed interval has defined begin and end Instant. An open ended
+ * interval has either begin == null or end ==null.
  *
  * @author bbr
  */
 public class TimeInterval {
 
-    private Instant begin;
-    private Instant end;
+  private Instant begin;
+  private Instant end;
 
-    public TimeInterval(Instant begin, Instant end) {
-        this.begin = begin;
-        this.end = end;
+  public TimeInterval(Instant begin, Instant end) {
+    this.begin = begin;
+    this.end = end;
+  }
+
+  public boolean contains(Instant i) {
+    if (i == null) {
+      return false;
     }
+    boolean isAfterBegin = begin == null ? true : !i.isBefore(begin);
+    boolean isBeforeEnd = end == null ? true : !i.isAfter(end);
+    return (isAfterBegin && isBeforeEnd);
+  }
 
-    public boolean contains(Instant i) {
-        if (i == null) {
-            return false;
-        }
-        boolean isAfterBegin = begin == null ? true : !i.isBefore(begin);
-        boolean isBeforeEnd = end == null ? true : !i.isAfter(end);
-        return (isAfterBegin && isBeforeEnd);
+  public boolean isValid() {
+    boolean isValid = begin != null || end != null;
+    if (begin != null && end != null && begin.isAfter(end)) {
+      isValid = false;
     }
+    return isValid;
+  }
 
-    public boolean isValid() {
-        boolean isValid = begin != null || end != null;
-        if (begin != null && end != null && begin.isAfter(end)) {
-            isValid = false;
-        }
-        return isValid;
+  public Instant getBegin() {
+    return begin;
+  }
+
+  public void setBegin(Instant begin) {
+    this.begin = begin;
+  }
+
+  public Instant getEnd() {
+    return end;
+  }
+
+  public void setEnd(Instant end) {
+    this.end = end;
+  }
+
+  @Override
+  public int hashCode() {
+    final int prime = 31;
+    int result = 1;
+    result = prime * result + ((begin == null) ? 0 : begin.hashCode());
+    result = prime * result + ((end == null) ? 0 : end.hashCode());
+    return result;
+  }
+
+  @Override
+  public boolean equals(Object obj) {
+    if (this == obj) {
+      return true;
     }
-
-    public Instant getBegin() {
-        return begin;
+    if (obj == null) {
+      return false;
     }
-
-    public void setBegin(Instant begin) {
-        this.begin = begin;
+    if (!getClass().isAssignableFrom(obj.getClass())) {
+      return false;
     }
-
-    public Instant getEnd() {
-        return end;
+    TimeInterval other = (TimeInterval) obj;
+    if (begin == null) {
+      if (other.begin != null) {
+        return false;
+      }
+    } else if (!begin.equals(other.begin)) {
+      return false;
     }
-
-    public void setEnd(Instant end) {
-        this.end = end;
-    }
-
-    @Override
-    public String toString() {
-        return "TimeInterval [" + "begin=" + this.begin + ", end=" + this.end + "]";
-    }
-
-    @Override
-    public int hashCode() {
-        final int prime = 31;
-        int result = 1;
-        result = prime * result + ((begin == null) ? 0 : begin.hashCode());
-        result = prime * result + ((end == null) ? 0 : end.hashCode());
-        return result;
-    }
-
-    @Override
-    public boolean equals(Object obj) {
-        if (this == obj) {
-            return true;
-        }
-        if (obj == null) {
-            return false;
-        }
-        if (!getClass().isAssignableFrom(obj.getClass())) {
-            return false;
-        }
-        TimeInterval other = (TimeInterval) obj;
-        if (begin == null) {
-            if (other.begin != null) {
-                return false;
-            }
-        } else if (!begin.equals(other.begin)) {
-            return false;
-        }
-        if (end == null) {
-            if (other.end != null) {
-                return false;
-            }
-        } else if (!end.equals(other.end)) {
-            return false;
-        }
-        return true;
+    if (end == null) {
+      if (other.end != null) {
+        return false;
+      }
+    } else if (!end.equals(other.end)) {
+      return false;
     }
+    return true;
+  }
 
+  @Override
+  public String toString() {
+    return "TimeInterval [" + "begin=" + this.begin + ", end=" + this.end + "]";
+  }
 }

lib/taskana-core/src/main/java/pro/taskana/Workbasket.java

@@ -1,251 +1,235 @@
 package pro.taskana;
 
-import java.time.Instant;
-
 import com.fasterxml.jackson.databind.annotation.JsonDeserialize;
+import java.time.Instant;
 
 import pro.taskana.impl.WorkbasketImpl;
 
-/**
- * Workbasket entity interface.
- */
+/** Workbasket entity interface. */
 @JsonDeserialize(as = WorkbasketImpl.class)
 public interface Workbasket {
 
-    /**
-     * Returns the unique id of a workbasket.
-     *
-     * @return workbasketId
-     */
-    String getId();
+  /**
+   * Returns the unique id of a workbasket.
+   *
+   * @return workbasketId
+   */
+  String getId();
 
-    /**
-     * Returns the date when the workbasket was created.
-     *
-     * @return created as Instant
-     */
-    Instant getCreated();
+  /**
+   * Returns the date when the workbasket was created.
+   *
+   * @return created as Instant
+   */
+  Instant getCreated();
 
-    /**
-     * Returns the key of the workbasket.
-     *
-     * @return the key of the workbasket
-     */
-    String getKey();
+  /**
+   * Returns the key of the workbasket.
+   *
+   * @return the key of the workbasket
+   */
+  String getKey();
 
-    /**
-     * Returns the domain of the workbasket.
-     *
-     * @return domain of the workbasket
-     */
-    String getDomain();
+  /**
+   * Returns the domain of the workbasket.
+   *
+   * @return domain of the workbasket
+   */
+  String getDomain();
 
-    /**
-     * Returns the type of the workbasket.
-     *
-     * @return the type of the workbasket
-     */
-    WorkbasketType getType();
+  /**
+   * Returns the type of the workbasket.
+   *
+   * @return the type of the workbasket
+   */
+  WorkbasketType getType();
 
-    /**
-     * Sets the type of the workbasket.
-     *
-     * @param type
-     *            the type of the workbasket
-     */
-    void setType(WorkbasketType type);
+  /**
+   * Sets the type of the workbasket.
+   *
+   * @param type the type of the workbasket
+   */
+  void setType(WorkbasketType type);
 
-    /**
-     * Returns the date when the workbasket was modified the last time.
-     *
-     * @return modified as Instant
-     */
-    Instant getModified();
+  /**
+   * Returns the date when the workbasket was modified the last time.
+   *
+   * @return modified as Instant
+   */
+  Instant getModified();
 
-    /**
-     * Returns the name of the workbasket.
-     *
-     * @return workbasketName
-     */
-    String getName();
+  /**
+   * Returns the name of the workbasket.
+   *
+   * @return workbasketName
+   */
+  String getName();
 
-    /**
-     * Sets the name of the workbasket.
-     *
-     * @param workbasketName
-     *            the name of the workbasket
-     */
-    void setName(String workbasketName);
+  /**
+   * Sets the name of the workbasket.
+   *
+   * @param workbasketName the name of the workbasket
+   */
+  void setName(String workbasketName);
 
-    /**
-     * Returns the workbasket-descriptions.
-     *
-     * @return description
-     */
-    String getDescription();
+  /**
+   * Returns the workbasket-descriptions.
+   *
+   * @return description
+   */
+  String getDescription();
 
-    /**
-     * Sets the workbasket-descriptions.
-     *
-     * @param description
-     *            the description of the workbasket
-     */
-    void setDescription(String description);
+  /**
+   * Sets the workbasket-descriptions.
+   *
+   * @param description the description of the workbasket
+   */
+  void setDescription(String description);
 
-    /**
-     * Returns the Id of the workbasket-owner.
-     *
-     * @return ownerId
-     */
-    String getOwner();
+  /**
+   * Returns the Id of the workbasket-owner.
+   *
+   * @return ownerId
+   */
+  String getOwner();
 
-    /**
-     * Sets the owner-ID of the workbasket.
-     *
-     * @param owner
-     *            of the current workbasket
-     */
-    void setOwner(String owner);
+  /**
+   * Sets the owner-ID of the workbasket.
+   *
+   * @param owner of the current workbasket
+   */
+  void setOwner(String owner);
 
-    /**
-     * Return the value for the custom1 attribute.
-     *
-     * @return custom1
-     */
-    String getCustom1();
+  /**
+   * Return the value for the custom1 attribute.
+   *
+   * @return custom1
+   */
+  String getCustom1();
 
-    /**
-     * Sets the value for custom1 Attribute.
-     *
-     * @param custom1
-     *            the custom1 property of the workbasket
-     */
-    void setCustom1(String custom1);
+  /**
+   * Sets the value for custom1 Attribute.
+   *
+   * @param custom1 the custom1 property of the workbasket
+   */
+  void setCustom1(String custom1);
 
-    /**
-     * Return the value for the custom2 attribute.
-     *
-     * @return custom2
-     */
-    String getCustom2();
+  /**
+   * Return the value for the custom2 attribute.
+   *
+   * @return custom2
+   */
+  String getCustom2();
 
-    /**
-     * Sets the value for custom2 attribute.
-     *
-     * @param custom2
-     *            the custom2 property of the workbasket
-     */
-    void setCustom2(String custom2);
+  /**
+   * Sets the value for custom2 attribute.
+   *
+   * @param custom2 the custom2 property of the workbasket
+   */
+  void setCustom2(String custom2);
 
-    /**
-     * Return the value for the custom3 attribute.
-     *
-     * @return custom3
-     */
-    String getCustom3();
+  /**
+   * Return the value for the custom3 attribute.
+   *
+   * @return custom3
+   */
+  String getCustom3();
 
-    /**
-     * Sets the value for custom3 attribute.
-     *
-     * @param custom3
-     *            the custom3 property of the workbasket
-     */
-    void setCustom3(String custom3);
+  /**
+   * Sets the value for custom3 attribute.
+   *
+   * @param custom3 the custom3 property of the workbasket
+   */
+  void setCustom3(String custom3);
 
-    /**
-     * Return the value for the custom4 attribute.
-     *
-     * @return custom4
-     */
-    String getCustom4();
+  /**
+   * Return the value for the custom4 attribute.
+   *
+   * @return custom4
+   */
+  String getCustom4();
 
-    /**
-     * Sets the value for custom4 attribute.
-     *
-     * @param custom4
-     *            the custom4 property of the workbasket
-     */
-    void setCustom4(String custom4);
+  /**
+   * Sets the value for custom4 attribute.
+   *
+   * @param custom4 the custom4 property of the workbasket
+   */
+  void setCustom4(String custom4);
 
-    /**
-     * Return the value for the orgLevel1 attribute.
-     *
-     * @return orgLevel1
-     */
-    String getOrgLevel1();
+  /**
+   * Return the value for the orgLevel1 attribute.
+   *
+   * @return orgLevel1
+   */
+  String getOrgLevel1();
 
-    /**
-     * Sets the value for orgLevel1 attribute.
-     *
-     * @param orgLevel1
-     *            the orgLevel1 property of the workbasket
-     */
-    void setOrgLevel1(String orgLevel1);
+  /**
+   * Sets the value for orgLevel1 attribute.
+   *
+   * @param orgLevel1 the orgLevel1 property of the workbasket
+   */
+  void setOrgLevel1(String orgLevel1);
 
-    /**
-     * Return the value for the orgLevel2 attribute.
-     *
-     * @return orgLevel2
-     */
-    String getOrgLevel2();
+  /**
+   * Return the value for the orgLevel2 attribute.
+   *
+   * @return orgLevel2
+   */
+  String getOrgLevel2();
 
-    /**
-     * Sets the value for orgLevel2 attribute.
-     *
-     * @param orgLevel2
-     *            the orgLevel2 property of the workbasket
-     */
-    void setOrgLevel2(String orgLevel2);
+  /**
+   * Sets the value for orgLevel2 attribute.
+   *
+   * @param orgLevel2 the orgLevel2 property of the workbasket
+   */
+  void setOrgLevel2(String orgLevel2);
 
-    /**
-     * Return the value for the orgLevel3 attribute.
-     *
-     * @return orgLevel3
-     */
-    String getOrgLevel3();
+  /**
+   * Return the value for the orgLevel3 attribute.
+   *
+   * @return orgLevel3
+   */
+  String getOrgLevel3();
 
-    /**
-     * Sets the value for orgLevel3 attribute.
-     *
-     * @param orgLevel3
-     *            the orgLevel3 property of the workbasket
-     */
-    void setOrgLevel3(String orgLevel3);
+  /**
+   * Sets the value for orgLevel3 attribute.
+   *
+   * @param orgLevel3 the orgLevel3 property of the workbasket
+   */
+  void setOrgLevel3(String orgLevel3);
 
-    /**
-     * Return the value for the orgLevel4 attribute.
-     *
-     * @return orgLevel4
-     */
-    String getOrgLevel4();
+  /**
+   * Return the value for the orgLevel4 attribute.
+   *
+   * @return orgLevel4
+   */
+  String getOrgLevel4();
 
-    /**
-     * Sets the value for orgLevel4 attribute.
-     *
-     * @param orgLevel4
-     *            the orgLevel4 property of the workbasket
-     */
-    void setOrgLevel4(String orgLevel4);
+  /**
+   * Sets the value for orgLevel4 attribute.
+   *
+   * @param orgLevel4 the orgLevel4 property of the workbasket
+   */
+  void setOrgLevel4(String orgLevel4);
 
-    /**
-     * Return the value for the markedForDeletion attribute.
-     *
-     * @return markedForDeletion
-     */
-    boolean isMarkedForDeletion();
+  /**
+   * Return the value for the markedForDeletion attribute.
+   *
+   * @return markedForDeletion
+   */
+  boolean isMarkedForDeletion();
 
-    /**
-     * Sets the value for markedForDeletion attribute.
-     *
-     * @param markedForDeletion
-     *            the markedForDeletion property of the workbasket
-     */
-    void setMarkedForDeletion(boolean markedForDeletion);
+  /**
+   * Sets the value for markedForDeletion attribute.
+   *
+   * @param markedForDeletion the markedForDeletion property of the workbasket
+   */
+  void setMarkedForDeletion(boolean markedForDeletion);
 
-    /**
-     * Return a summary of the current workbasket.
-     *
-     * @return the WorkbasketSummary object for the current work basket
-     */
-    WorkbasketSummary asSummary();
+  /**
+   * Return a summary of the current workbasket.
+   *
+   * @return the WorkbasketSummary object for the current work basket
+   */
+  WorkbasketSummary asSummary();
 }

lib/taskana-core/src/main/java/pro/taskana/WorkbasketAccessItem.java

@@ -1,331 +1,318 @@
 package pro.taskana;
 
 /**
- * Interface for WorkbasketAccessItem. This interface is used to control access of users to workbaskets.
+ * Interface for WorkbasketAccessItem. This interface is used to control access of users to
+ * workbaskets.
  *
  * @author bbr
  */
 public interface WorkbasketAccessItem {
 
-    /**
-     * Returns the current id of the WorkbasketAccessItem.
-     *
-     * @return Id
-     */
-    String getId();
+  /**
+   * Returns the current id of the WorkbasketAccessItem.
+   *
+   * @return Id
+   */
+  String getId();
 
-    /**
-     * Returns the Id of the referenced workbasket.
-     *
-     * @return the workbasket Id
-     */
-    String getWorkbasketId();
+  /**
+   * Returns the Id of the referenced workbasket.
+   *
+   * @return the workbasket Id
+   */
+  String getWorkbasketId();
 
-    /**
-     * Returns the Key of the referenced workbasket.
-     *
-     * @return the workbasket Key
-     */
-    String getWorkbasketKey();
+  /**
+   * Returns the Key of the referenced workbasket.
+   *
+   * @return the workbasket Key
+   */
+  String getWorkbasketKey();
 
-    /**
-     * Returns the group id or user id for which this WorkbasketAccessItem controls access permissions.
-     *
-     * @return access id, this is the group id or user id
-     */
-    String getAccessId();
+  /**
+   * Returns the group id or user id for which this WorkbasketAccessItem controls access
+   * permissions.
+   *
+   * @return access id, this is the group id or user id
+   */
+  String getAccessId();
 
-    /**
-     * Returns the name of the group or user for which this WorkbasketAccessItem controls access permissions.
-     *
-     * @return access name, this is the name of the group or user
-     */
-    String getAccessName();
+  /**
+   * Returns the name of the group or user for which this WorkbasketAccessItem controls access
+   * permissions.
+   *
+   * @return access name, this is the name of the group or user
+   */
+  String getAccessName();
 
-    /**
-     * Set the name of the group or user for which this WorkbasketAccessItem controls access permissions.
-     *
-     * @param name
-     *            the name of the group or user for which this WorkbasketAccessItem controls access permissions.
-     */
-    void setAccessName(String name);
+  /**
+   * Set the name of the group or user for which this WorkbasketAccessItem controls access
+   * permissions.
+   *
+   * @param name the name of the group or user for which this WorkbasketAccessItem controls access
+   *     permissions.
+   */
+  void setAccessName(String name);
 
-    /**
-     * Returns whether read of the referenced workbasket is permitted.
-     *
-     * @return read permission for the referenced workbasket
-     */
-    boolean isPermRead();
+  /**
+   * Returns whether read of the referenced workbasket is permitted.
+   *
+   * @return read permission for the referenced workbasket
+   */
+  boolean isPermRead();
 
-    /**
-     * Sets read permission for the referenced workbasket.
-     *
-     * @param permRead
-     *            specifies whether read is permitted for the referenced workbasket.
-     */
-    void setPermRead(boolean permRead);
+  /**
+   * Sets read permission for the referenced workbasket.
+   *
+   * @param permRead specifies whether read is permitted for the referenced workbasket.
+   */
+  void setPermRead(boolean permRead);
 
-    /**
-     * Returns whether open of the referenced workbasket is permitted.
-     *
-     * @return open permission for the referenced workbasket
-     */
-    boolean isPermOpen();
+  /**
+   * Returns whether open of the referenced workbasket is permitted.
+   *
+   * @return open permission for the referenced workbasket
+   */
+  boolean isPermOpen();
 
-    /**
-     * Sets open permission for the referenced workbasket.
-     *
-     * @param permOpen
-     *            specifies whether open is permitted for the referenced workbasket.
-     */
-    void setPermOpen(boolean permOpen);
+  /**
+   * Sets open permission for the referenced workbasket.
+   *
+   * @param permOpen specifies whether open is permitted for the referenced workbasket.
+   */
+  void setPermOpen(boolean permOpen);
 
-    /**
-     * Returns whether append to the referenced workbasket is permitted.
-     *
-     * @return append permission for the referenced workbasket
-     */
-    boolean isPermAppend();
+  /**
+   * Returns whether append to the referenced workbasket is permitted.
+   *
+   * @return append permission for the referenced workbasket
+   */
+  boolean isPermAppend();
 
-    /**
-     * Sets append permission for the referenced workbasket.
-     *
-     * @param permAppend
-     *            specifies whether append to the referenced workbasket is permitted.
-     */
-    void setPermAppend(boolean permAppend);
+  /**
+   * Sets append permission for the referenced workbasket.
+   *
+   * @param permAppend specifies whether append to the referenced workbasket is permitted.
+   */
+  void setPermAppend(boolean permAppend);
 
-    /**
-     * Returns whether transfer from the referenced workbasket is permitted.
-     *
-     * @return transfer permission for the referenced workbasket
-     */
-    boolean isPermTransfer();
+  /**
+   * Returns whether transfer from the referenced workbasket is permitted.
+   *
+   * @return transfer permission for the referenced workbasket
+   */
+  boolean isPermTransfer();
 
-    /**
-     * Sets transfer permission for the referenced workbasket.
-     *
-     * @param permTransfer
-     *            specifies whether transfer from the referenced workbasket is permitted.
-     */
-    void setPermTransfer(boolean permTransfer);
+  /**
+   * Sets transfer permission for the referenced workbasket.
+   *
+   * @param permTransfer specifies whether transfer from the referenced workbasket is permitted.
+   */
+  void setPermTransfer(boolean permTransfer);
 
-    /**
-     * Returns whether distribute from the referenced workbasket is permitted.
-     *
-     * @return distribute permission for the referenced workbasket
-     */
-    boolean isPermDistribute();
+  /**
+   * Returns whether distribute from the referenced workbasket is permitted.
+   *
+   * @return distribute permission for the referenced workbasket
+   */
+  boolean isPermDistribute();
 
-    /**
-     * Sets distribute permission for the referenced workbasket.
-     *
-     * @param permDistribute
-     *            specifies whether distribute from the referenced workbasket is permitted.
-     */
-    void setPermDistribute(boolean permDistribute);
+  /**
+   * Sets distribute permission for the referenced workbasket.
+   *
+   * @param permDistribute specifies whether distribute from the referenced workbasket is permitted.
+   */
+  void setPermDistribute(boolean permDistribute);
 
-    /**
-     * Returns whether custom1 permission is granted for the referenced workbasket. The semantics of this custom
-     * permission is transparent to taskana.
-     *
-     * @return custom1 permission for the referenced workbasket
-     */
-    boolean isPermCustom1();
+  /**
+   * Returns whether custom1 permission is granted for the referenced workbasket. The semantics of
+   * this custom permission is transparent to taskana.
+   *
+   * @return custom1 permission for the referenced workbasket
+   */
+  boolean isPermCustom1();
 
-    /**
-     * Sets the custom1 permission for the referenced workbasket. The semantics of this custom permission is transparent
-     * to taskana.
-     *
-     * @param permCustom1
-     *            specifies whether custom1 permission is granted
-     */
-    void setPermCustom1(boolean permCustom1);
+  /**
+   * Sets the custom1 permission for the referenced workbasket. The semantics of this custom
+   * permission is transparent to taskana.
+   *
+   * @param permCustom1 specifies whether custom1 permission is granted
+   */
+  void setPermCustom1(boolean permCustom1);
 
-    /**
-     * Returns whether custom2 permission is granted for the referenced workbasket. The semantics of this custom
-     * permission is transparent to taskana.
-     *
-     * @return custom2 permission for the referenced workbasket
-     */
-    boolean isPermCustom2();
+  /**
+   * Returns whether custom2 permission is granted for the referenced workbasket. The semantics of
+   * this custom permission is transparent to taskana.
+   *
+   * @return custom2 permission for the referenced workbasket
+   */
+  boolean isPermCustom2();
 
-    /**
-     * Sets the custom2 permission for the referenced workbasket. The semantics of this custom permission is transparent
-     * to taskana.
-     *
-     * @param permCustom2
-     *            specifies whether custom2 permission is granted
-     */
-    void setPermCustom2(boolean permCustom2);
+  /**
+   * Sets the custom2 permission for the referenced workbasket. The semantics of this custom
+   * permission is transparent to taskana.
+   *
+   * @param permCustom2 specifies whether custom2 permission is granted
+   */
+  void setPermCustom2(boolean permCustom2);
 
-    /**
-     * Returns whether custom3 permission is granted for the referenced workbasket. The semantics of this custom
-     * permission is transparent to taskana.
-     *
-     * @return custom3 permission for the referenced workbasket
-     */
-    boolean isPermCustom3();
+  /**
+   * Returns whether custom3 permission is granted for the referenced workbasket. The semantics of
+   * this custom permission is transparent to taskana.
+   *
+   * @return custom3 permission for the referenced workbasket
+   */
+  boolean isPermCustom3();
 
-    /**
-     * Sets the custom3 permission for the referenced workbasket. The semantics of this custom permission is transparent
-     * to taskana.
-     *
-     * @param permCustom3
-     *            specifies whether custom3 permission is granted
-     */
-    void setPermCustom3(boolean permCustom3);
+  /**
+   * Sets the custom3 permission for the referenced workbasket. The semantics of this custom
+   * permission is transparent to taskana.
+   *
+   * @param permCustom3 specifies whether custom3 permission is granted
+   */
+  void setPermCustom3(boolean permCustom3);
 
-    /**
-     * Returns whether custom4 permission is granted for the referenced workbasket. The semantics of this custom
-     * permission is transparent to taskana.
-     *
-     * @return custom4 permission for the referenced workbasket
-     */
-    boolean isPermCustom4();
+  /**
+   * Returns whether custom4 permission is granted for the referenced workbasket. The semantics of
+   * this custom permission is transparent to taskana.
+   *
+   * @return custom4 permission for the referenced workbasket
+   */
+  boolean isPermCustom4();
 
-    /**
-     * Sets the custom4 permission for the referenced workbasket. The semantics of this custom permission is transparent
-     * to taskana.
-     *
-     * @param permCustom4
-     *            specifies whether custom4 permission is granted
-     */
-    void setPermCustom4(boolean permCustom4);
+  /**
+   * Sets the custom4 permission for the referenced workbasket. The semantics of this custom
+   * permission is transparent to taskana.
+   *
+   * @param permCustom4 specifies whether custom4 permission is granted
+   */
+  void setPermCustom4(boolean permCustom4);
 
-    /**
-     * Returns whether custom5 permission is granted for the referenced workbasket. The semantics of this custom
-     * permission is transparent to taskana.
-     *
-     * @return custom5 permission for the referenced workbasket
-     */
-    boolean isPermCustom5();
+  /**
+   * Returns whether custom5 permission is granted for the referenced workbasket. The semantics of
+   * this custom permission is transparent to taskana.
+   *
+   * @return custom5 permission for the referenced workbasket
+   */
+  boolean isPermCustom5();
 
-    /**
-     * Sets the custom5 permission for the referenced workbasket. The semantics of this custom permission is transparent
-     * to taskana.
-     *
-     * @param permCustom5
-     *            specifies whether custom5 permission is granted
-     */
-    void setPermCustom5(boolean permCustom5);
+  /**
+   * Sets the custom5 permission for the referenced workbasket. The semantics of this custom
+   * permission is transparent to taskana.
+   *
+   * @param permCustom5 specifies whether custom5 permission is granted
+   */
+  void setPermCustom5(boolean permCustom5);
 
-    /**
-     * Returns whether custom6 permission is granted for the referenced workbasket. The semantics of this custom
-     * permission is transparent to taskana.
-     *
-     * @return custom6 permission for the referenced workbasket
-     */
-    boolean isPermCustom6();
+  /**
+   * Returns whether custom6 permission is granted for the referenced workbasket. The semantics of
+   * this custom permission is transparent to taskana.
+   *
+   * @return custom6 permission for the referenced workbasket
+   */
+  boolean isPermCustom6();
 
-    /**
-     * Sets the custom6 permission for the referenced workbasket. The semantics of this custom permission is transparent
-     * to taskana.
-     *
-     * @param permCustom6
-     *            specifies whether custom6 permission is granted
-     */
-    void setPermCustom6(boolean permCustom6);
+  /**
+   * Sets the custom6 permission for the referenced workbasket. The semantics of this custom
+   * permission is transparent to taskana.
+   *
+   * @param permCustom6 specifies whether custom6 permission is granted
+   */
+  void setPermCustom6(boolean permCustom6);
 
-    /**
-     * Returns whether custom7 permission is granted for the referenced workbasket. The semantics of this custom
-     * permission is transparent to taskana.
-     *
-     * @return custom7 permission for the referenced workbasket
-     */
-    boolean isPermCustom7();
+  /**
+   * Returns whether custom7 permission is granted for the referenced workbasket. The semantics of
+   * this custom permission is transparent to taskana.
+   *
+   * @return custom7 permission for the referenced workbasket
+   */
+  boolean isPermCustom7();
 
-    /**
-     * Sets the custom7 permission for the referenced workbasket. The semantics of this custom permission is transparent
-     * to taskana.
-     *
-     * @param permCustom7
-     *            specifies whether custom7 permission is granted
-     */
-    void setPermCustom7(boolean permCustom7);
+  /**
+   * Sets the custom7 permission for the referenced workbasket. The semantics of this custom
+   * permission is transparent to taskana.
+   *
+   * @param permCustom7 specifies whether custom7 permission is granted
+   */
+  void setPermCustom7(boolean permCustom7);
 
-    /**
-     * Returns whether custom8 permission is granted for the referenced workbasket. The semantics of this custom
-     * permission is transparent to taskana.
-     *
-     * @return custom8 permission for the referenced workbasket
-     */
-    boolean isPermCustom8();
+  /**
+   * Returns whether custom8 permission is granted for the referenced workbasket. The semantics of
+   * this custom permission is transparent to taskana.
+   *
+   * @return custom8 permission for the referenced workbasket
+   */
+  boolean isPermCustom8();
 
-    /**
-     * Sets the custom8 permission for the referenced workbasket. The semantics of this custom permission is transparent
-     * to taskana.
-     *
-     * @param permCustom8
-     *            specifies whether custom8 permission is granted
-     */
-    void setPermCustom8(boolean permCustom8);
+  /**
+   * Sets the custom8 permission for the referenced workbasket. The semantics of this custom
+   * permission is transparent to taskana.
+   *
+   * @param permCustom8 specifies whether custom8 permission is granted
+   */
+  void setPermCustom8(boolean permCustom8);
 
-    /**
-     * Returns whether custom9 permission is granted for the referenced workbasket. The semantics of this custom
-     * permission is transparent to taskana.
-     *
-     * @return custom9 permission for the referenced workbasket
-     */
-    boolean isPermCustom9();
+  /**
+   * Returns whether custom9 permission is granted for the referenced workbasket. The semantics of
+   * this custom permission is transparent to taskana.
+   *
+   * @return custom9 permission for the referenced workbasket
+   */
+  boolean isPermCustom9();
 
-    /**
-     * Sets the custom9 permission for the referenced workbasket. The semantics of this custom permission is transparent
-     * to taskana.
-     *
-     * @param permCustom9
-     *            specifies whether custom9 permission is granted
-     */
-    void setPermCustom9(boolean permCustom9);
+  /**
+   * Sets the custom9 permission for the referenced workbasket. The semantics of this custom
+   * permission is transparent to taskana.
+   *
+   * @param permCustom9 specifies whether custom9 permission is granted
+   */
+  void setPermCustom9(boolean permCustom9);
 
-    /**
-     * Returns whether custom10 permission is granted for the referenced workbasket. The semantics of this custom
-     * permission is transparent to taskana.
-     *
-     * @return custom10 permission for the referenced workbasket
-     */
-    boolean isPermCustom10();
+  /**
+   * Returns whether custom10 permission is granted for the referenced workbasket. The semantics of
+   * this custom permission is transparent to taskana.
+   *
+   * @return custom10 permission for the referenced workbasket
+   */
+  boolean isPermCustom10();
 
-    /**
-     * Sets the custom10 permission for the referenced workbasket. The semantics of this custom permission is
-     * transparent to taskana.
-     *
-     * @param permCustom10
-     *            specifies whether custom10 permission is granted
-     */
-    void setPermCustom10(boolean permCustom10);
+  /**
+   * Sets the custom10 permission for the referenced workbasket. The semantics of this custom
+   * permission is transparent to taskana.
+   *
+   * @param permCustom10 specifies whether custom10 permission is granted
+   */
+  void setPermCustom10(boolean permCustom10);
 
-    /**
-     * Returns whether custom11 permission is granted for the referenced workbasket. The semantics of this custom
-     * permission is transparent to taskana.
-     *
-     * @return custom11 permission for the referenced workbasket
-     */
-    boolean isPermCustom11();
+  /**
+   * Returns whether custom11 permission is granted for the referenced workbasket. The semantics of
+   * this custom permission is transparent to taskana.
+   *
+   * @return custom11 permission for the referenced workbasket
+   */
+  boolean isPermCustom11();
 
-    /**
-     * Sets the custom11 permission for the referenced workbasket. The semantics of this custom permission is
-     * transparent to taskana.
-     *
-     * @param permCustom11
-     *            specifies whether custom11 permission is granted
-     */
-    void setPermCustom11(boolean permCustom11);
+  /**
+   * Sets the custom11 permission for the referenced workbasket. The semantics of this custom
+   * permission is transparent to taskana.
+   *
+   * @param permCustom11 specifies whether custom11 permission is granted
+   */
+  void setPermCustom11(boolean permCustom11);
 
-    /**
-     * Returns whether custom12 permission is granted for the referenced workbasket. The semantics of this custom
-     * permission is transparent to taskana.
-     *
-     * @return custom12 permission for the referenced workbasket
-     */
-    boolean isPermCustom12();
+  /**
+   * Returns whether custom12 permission is granted for the referenced workbasket. The semantics of
+   * this custom permission is transparent to taskana.
+   *
+   * @return custom12 permission for the referenced workbasket
+   */
+  boolean isPermCustom12();
 
-    /**
-     * Sets the custom12 permission for the referenced workbasket. The semantics of this custom permission is
-     * transparent to taskana.
-     *
-     * @param permCustom12
-     *            specifies whether custom12 permission is granted
-     */
-    void setPermCustom12(boolean permCustom12);
+  /**
+   * Sets the custom12 permission for the referenced workbasket. The semantics of this custom
+   * permission is transparent to taskana.
+   *
+   * @param permCustom12 specifies whether custom12 permission is granted
+   */
+  void setPermCustom12(boolean permCustom12);
 }

lib/taskana-core/src/main/java/pro/taskana/WorkbasketAccessItemQuery.java

@@ -1,106 +1,96 @@
 package pro.taskana;
 
-/**
- * WorkbasketAccessItemQuery for generating dynamic SQL.
- */
-public interface WorkbasketAccessItemQuery extends BaseQuery<WorkbasketAccessItem, AccessItemQueryColumnName> {
+/** WorkbasketAccessItemQuery for generating dynamic SQL. */
+public interface WorkbasketAccessItemQuery
+    extends BaseQuery<WorkbasketAccessItem, AccessItemQueryColumnName> {
 
-    /**
-     * Add your unique entry id to your query as filter.
-     *
-     * @param ids
-     *            the unique entry IDs
-     * @return the query
-     */
-    WorkbasketAccessItemQuery idIn(String... ids);
+  /**
+   * Add your unique entry id to your query as filter.
+   *
+   * @param ids the unique entry IDs
+   * @return the query
+   */
+  WorkbasketAccessItemQuery idIn(String... ids);
 
-    /**
-     * Add your workbasket id to your query.
-     *
-     * @param workbasketId
-     *            the workbasket Id
-     * @return the query
-     */
-    WorkbasketAccessItemQuery workbasketIdIn(String... workbasketId);
+  /**
+   * Add your workbasket id to your query.
+   *
+   * @param workbasketId the workbasket Id
+   * @return the query
+   */
+  WorkbasketAccessItemQuery workbasketIdIn(String... workbasketId);
 
-    /**
-     * Add your unique entry workbasket key to your query as filter.
-     *
-     * @param keys
-     *            the unique entry Keys
-     * @return the query
-     */
-    WorkbasketAccessItemQuery workbasketKeyIn(String... keys);
+  /**
+   * Add your unique entry workbasket key to your query as filter.
+   *
+   * @param keys the unique entry Keys
+   * @return the query
+   */
+  WorkbasketAccessItemQuery workbasketKeyIn(String... keys);
 
-    /**
-     * Add keys to your query. The keys are compared case-insensitively to the keys of access items with the SQL LIKE
-     * operator. You may add a wildcard like '%' to search generically. If you specify multiple keys they are connected
-     * with an OR operator, this is, the query searches access items workbaskets whose keys are like key1 or like key2, etc.
-     *
-     * @param key
-     *            the keys as Strings
-     * @return the query
-     */
-    WorkbasketAccessItemQuery workbasketKeyLike(String... key);
+  /**
+   * Add keys to your query. The keys are compared case-insensitively to the keys of access items
+   * with the SQL LIKE operator. You may add a wildcard like '%' to search generically. If you
+   * specify multiple keys they are connected with an OR operator, this is, the query searches
+   * access items workbaskets whose keys are like key1 or like key2, etc.
+   *
+   * @param key the keys as Strings
+   * @return the query
+   */
+  WorkbasketAccessItemQuery workbasketKeyLike(String... key);
 
-    /**
-     * Add your accessIds to your query.
-     *
-     * @param accessId
-     *            as access Ids
-     * @return the query
-     */
-    WorkbasketAccessItemQuery accessIdIn(String... accessId);
+  /**
+   * Add your accessIds to your query.
+   *
+   * @param accessId as access Ids
+   * @return the query
+   */
+  WorkbasketAccessItemQuery accessIdIn(String... accessId);
 
-    /**
-     * Add keys to your query. The keys are compared case-insensitively to the keys of access items with the SQL LIKE
-     * operator. You may add a wildcard like '%' to search generically. If you specify multiple keys they are connected
-     * with an OR operator, this is, the query searches access items whose ids are like id1 or like id2, etc.
-     *
-     * @param ids
-     *            the ids as Strings
-     * @return the query
-     */
-    WorkbasketAccessItemQuery accessIdLike(String... ids);
+  /**
+   * Add keys to your query. The keys are compared case-insensitively to the keys of access items
+   * with the SQL LIKE operator. You may add a wildcard like '%' to search generically. If you
+   * specify multiple keys they are connected with an OR operator, this is, the query searches
+   * access items whose ids are like id1 or like id2, etc.
+   *
+   * @param ids the ids as Strings
+   * @return the query
+   */
+  WorkbasketAccessItemQuery accessIdLike(String... ids);
 
-    /**
-     * Sort the query result by workbasket id.
-     *
-     * @param sortDirection
-     *            Determines whether the result is sorted in ascending or descending order. If sortDirection is null,
-     *            the result is sorted in ascending order
-     * @return the query
-     */
-    WorkbasketAccessItemQuery orderByWorkbasketId(SortDirection sortDirection);
+  /**
+   * Sort the query result by workbasket id.
+   *
+   * @param sortDirection Determines whether the result is sorted in ascending or descending order.
+   *     If sortDirection is null, the result is sorted in ascending order
+   * @return the query
+   */
+  WorkbasketAccessItemQuery orderByWorkbasketId(SortDirection sortDirection);
 
-    /**
-     * Sort the query result by workbasket key.
-     *
-     * @param sortDirection
-     *            Determines whether the result is sorted in ascending or descending order. If sortDirection is null,
-     *            the result is sorted in ascending order
-     * @return the query
-     */
-    WorkbasketAccessItemQuery orderByWorkbasketKey(SortDirection sortDirection);
+  /**
+   * Sort the query result by workbasket key.
+   *
+   * @param sortDirection Determines whether the result is sorted in ascending or descending order.
+   *     If sortDirection is null, the result is sorted in ascending order
+   * @return the query
+   */
+  WorkbasketAccessItemQuery orderByWorkbasketKey(SortDirection sortDirection);
 
-    /**
-     * Sort the query result by access Id.
-     *
-     * @param sortDirection
-     *            Determines whether the result is sorted in ascending or descending order. If sortDirection is null,
-     *            the result is sorted in ascending order
-     * @return the query
-     */
-    WorkbasketAccessItemQuery orderByAccessId(SortDirection sortDirection);
-
-    /**
-     * Sort the query result by Id.
-     *
-     * @param sortDirection
-     *            Determines whether the result is sorted in ascending or descending order. If sortDirection is null,
-     *            the result is sorted in ascending order
-     * @return the query
-     */
-    WorkbasketAccessItemQuery orderById(SortDirection sortDirection);
+  /**
+   * Sort the query result by access Id.
+   *
+   * @param sortDirection Determines whether the result is sorted in ascending or descending order.
+   *     If sortDirection is null, the result is sorted in ascending order
+   * @return the query
+   */
+  WorkbasketAccessItemQuery orderByAccessId(SortDirection sortDirection);
 
+  /**
+   * Sort the query result by Id.
+   *
+   * @param sortDirection Determines whether the result is sorted in ascending or descending order.
+   *     If sortDirection is null, the result is sorted in ascending order
+   * @return the query
+   */
+  WorkbasketAccessItemQuery orderById(SortDirection sortDirection);
 }

lib/taskana-core/src/main/java/pro/taskana/WorkbasketPermission.java

@@ -1,24 +1,22 @@
 package pro.taskana;
 
-/**
- * This enum contains all permission values for the workbaskets.
- */
+/** This enum contains all permission values for the workbaskets. */
 public enum WorkbasketPermission {
-    READ,
-    OPEN,
-    APPEND,
-    TRANSFER,
-    DISTRIBUTE,
-    CUSTOM_1,
-    CUSTOM_2,
-    CUSTOM_3,
-    CUSTOM_4,
-    CUSTOM_5,
-    CUSTOM_6,
-    CUSTOM_7,
-    CUSTOM_8,
-    CUSTOM_9,
-    CUSTOM_10,
-    CUSTOM_11,
-    CUSTOM_12
+  READ,
+  OPEN,
+  APPEND,
+  TRANSFER,
+  DISTRIBUTE,
+  CUSTOM_1,
+  CUSTOM_2,
+  CUSTOM_3,
+  CUSTOM_4,
+  CUSTOM_5,
+  CUSTOM_6,
+  CUSTOM_7,
+  CUSTOM_8,
+  CUSTOM_9,
+  CUSTOM_10,
+  CUSTOM_11,
+  CUSTOM_12
 }

lib/taskana-core/src/main/java/pro/taskana/WorkbasketQuery.java

@@ -3,492 +3,447 @@ package pro.taskana;
 import pro.taskana.exceptions.InvalidArgumentException;
 import pro.taskana.exceptions.NotAuthorizedException;
 
-/**
- * WorkitemQuery for generating dynamic sql.
- */
+/** WorkitemQuery for generating dynamic sql. */
 public interface WorkbasketQuery extends BaseQuery<WorkbasketSummary, WorkbasketQueryColumnName> {
 
-    /**
-     * Add your ids to your query. The ids are compared to the ids of workbaskets with the IN operator.
-     *
-     * @param id
-     *            the id as Strings
-     * @return the query
-     */
-    WorkbasketQuery idIn(String... id);
+  /**
+   * Add your ids to your query. The ids are compared to the ids of workbaskets with the IN
+   * operator.
+   *
+   * @param id the id as Strings
+   * @return the query
+   */
+  WorkbasketQuery idIn(String... id);
 
-    /**
-     * Add your keys to your query. The keys are compared case-insensitively to the keys of workbaskets with the IN
-     * operator.
-     * @param key
-     *            the keys as Strings
-     * @return the query
-     */
-    WorkbasketQuery keyIn(String... key);
+  /**
+   * Add your keys to your query. The keys are compared case-insensitively to the keys of
+   * workbaskets with the IN operator.
+   *
+   * @param key the keys as Strings
+   * @return the query
+   */
+  WorkbasketQuery keyIn(String... key);
 
-    /**
-     * Add keys to your query. The keys are compared case-insensitively to the keys of workbaskets with the SQL LIKE
-     * operator. You may add a wildcard like '%' to search generically. If you specify multiple keys they are connected
-     * with an OR operator, this is, the query searches workbaskets whose keys are like key1 or like key2, etc.
-     *
-     * @param key
-     *            the keys as Strings
-     * @return the query
-     */
-    WorkbasketQuery keyLike(String... key);
+  /**
+   * Add keys to your query. The keys are compared case-insensitively to the keys of workbaskets
+   * with the SQL LIKE operator. You may add a wildcard like '%' to search generically. If you
+   * specify multiple keys they are connected with an OR operator, this is, the query searches
+   * workbaskets whose keys are like key1 or like key2, etc.
+   *
+   * @param key the keys as Strings
+   * @return the query
+   */
+  WorkbasketQuery keyLike(String... key);
 
-    /**
-     * Add your names to your query. The names are compared case-insensitively to the names of workbaskets
-     *
-     * @param name
-     *            the names as Strings
-     * @return the query
-     */
-    WorkbasketQuery nameIn(String... name);
+  /**
+   * Add your names to your query. The names are compared case-insensitively to the names of
+   * workbaskets
+   *
+   * @param name the names as Strings
+   * @return the query
+   */
+  WorkbasketQuery nameIn(String... name);
 
-    /**
-     * Add names to your query. The names are compared case-insensitively to the names of workbaskets with the SQL LIKE
-     * operator. You may add a wildcard like '%' to search generically. If you specify multiple names, they are
-     * connected with an OR operator, this is, the query searches workbaskets whose names are like name1 or like name2,
-     * etc.
-     *
-     * @param name
-     *            the names as Strings
-     * @return the query
-     */
-    WorkbasketQuery nameLike(String... name);
+  /**
+   * Add names to your query. The names are compared case-insensitively to the names of workbaskets
+   * with the SQL LIKE operator. You may add a wildcard like '%' to search generically. If you
+   * specify multiple names, they are connected with an OR operator, this is, the query searches
+   * workbaskets whose names are like name1 or like name2, etc.
+   *
+   * @param name the names as Strings
+   * @return the query
+   */
+  WorkbasketQuery nameLike(String... name);
 
-    /**
-     * Add search strings to your query that are searched case-insensitively in the key and name fields of workbaskets.
-     * You may add a wildcard like '%' to search generically. If you specify multiple keys they are connected with an OR
-     * operator, this is, the query searches workbaskets whose keys are like string1 or whose names are like string1 or
-     * whose keys are like string2 or whose names are like string2, etc...
-     *
-     * @param searchString
-     *            the seach strings
-     * @return the query
-     */
-    WorkbasketQuery keyOrNameLike(String... searchString);
+  /**
+   * Add search strings to your query that are searched case-insensitively in the key and name
+   * fields of workbaskets. You may add a wildcard like '%' to search generically. If you specify
+   * multiple keys they are connected with an OR operator, this is, the query searches workbaskets
+   * whose keys are like string1 or whose names are like string1 or whose keys are like string2 or
+   * whose names are like string2, etc...
+   *
+   * @param searchString the seach strings
+   * @return the query
+   */
+  WorkbasketQuery keyOrNameLike(String... searchString);
 
-    /**
-     * Add your domains to your query.
-     *
-     * @param domain
-     *            the domains as Strings
-     * @return the query
-     */
-    WorkbasketQuery domainIn(String... domain);
+  /**
+   * Add your domains to your query.
+   *
+   * @param domain the domains as Strings
+   * @return the query
+   */
+  WorkbasketQuery domainIn(String... domain);
 
-    /**
-     * Add your types to your query.
-     *
-     * @param type
-     *            the types
-     * @return the query
-     */
-    WorkbasketQuery typeIn(WorkbasketType... type);
+  /**
+   * Add your types to your query.
+   *
+   * @param type the types
+   * @return the query
+   */
+  WorkbasketQuery typeIn(WorkbasketType... type);
 
-    /**
-     * Add the time intervals within which the workbasket was created to your query. For each time interval, the
-     * database query will search for workbaskets whose created timestamp is after or at the interval's begin and before
-     * or at the interval's end. If more than one interval is specified, the query will connect them with the OR
-     * keyword. If either begin or end of an interval are null, these values will not be specified in the query.
-     *
-     * @param intervals
-     *            - the TimeIntervals within which the workbasket was created
-     * @return the query
-     */
-    WorkbasketQuery createdWithin(TimeInterval... intervals);
+  /**
+   * Add the time intervals within which the workbasket was created to your query. For each time
+   * interval, the database query will search for workbaskets whose created timestamp is after or at
+   * the interval's begin and before or at the interval's end. If more than one interval is
+   * specified, the query will connect them with the OR keyword. If either begin or end of an
+   * interval are null, these values will not be specified in the query.
+   *
+   * @param intervals - the TimeIntervals within which the workbasket was created
+   * @return the query
+   */
+  WorkbasketQuery createdWithin(TimeInterval... intervals);
 
-    /**
-     * Add the time intervals within which the workbasket was modified to your query. For each time interval, the
-     * database query will search for workbaskets whose created timestamp is after or at the interval's begin and before
-     * or at the interval's end. If more than one interval is specified, the query will connect them with the OR
-     * keyword. If either begin or end of an interval are null, these values will not be specified in the query.
-     *
-     * @param intervals
-     *            - the TimeIntervals within which the workbasket was created
-     * @return the query
-     */
-    WorkbasketQuery modifiedWithin(TimeInterval... intervals);
+  /**
+   * Add the time intervals within which the workbasket was modified to your query. For each time
+   * interval, the database query will search for workbaskets whose created timestamp is after or at
+   * the interval's begin and before or at the interval's end. If more than one interval is
+   * specified, the query will connect them with the OR keyword. If either begin or end of an
+   * interval are null, these values will not be specified in the query.
+   *
+   * @param intervals - the TimeIntervals within which the workbasket was created
+   * @return the query
+   */
+  WorkbasketQuery modifiedWithin(TimeInterval... intervals);
 
-    /**
-     * Add your description to your query. It will be compared case-insensitively to the descriptions of workbaskets
-     * using the LIKE operator. You may use a wildcard like '%' to search generically. If you specify multiple arguments
-     * they are combined with the OR keyword.
-     *
-     * @param description
-     *            your description
-     * @return the query
-     */
-    WorkbasketQuery descriptionLike(String... description);
+  /**
+   * Add your description to your query. It will be compared case-insensitively to the descriptions
+   * of workbaskets using the LIKE operator. You may use a wildcard like '%' to search generically.
+   * If you specify multiple arguments they are combined with the OR keyword.
+   *
+   * @param description your description
+   * @return the query
+   */
+  WorkbasketQuery descriptionLike(String... description);
 
-    /**
-     * Add the owners to your query.
-     *
-     * @param owners
-     *            the owners as String
-     * @return the query
-     */
-    WorkbasketQuery ownerIn(String... owners);
+  /**
+   * Add the owners to your query.
+   *
+   * @param owners the owners as String
+   * @return the query
+   */
+  WorkbasketQuery ownerIn(String... owners);
 
-    /**
-     * Add the owners for pattern matching to your query. It will be compared in SQL with the LIKE operator. You may use
-     * a wildcard like % to specify the pattern. If you specify multiple arguments they are combined with the OR
-     * keyword.
-     *
-     * @param owners
-     *            the owners as Strings
-     * @return the query
-     */
-    WorkbasketQuery ownerLike(String... owners);
+  /**
+   * Add the owners for pattern matching to your query. It will be compared in SQL with the LIKE
+   * operator. You may use a wildcard like % to specify the pattern. If you specify multiple
+   * arguments they are combined with the OR keyword.
+   *
+   * @param owners the owners as Strings
+   * @return the query
+   */
+  WorkbasketQuery ownerLike(String... owners);
 
-    /**
-     * Setting up the permission which should be granted on the result workbaskets and the users which should be
-     * checked. READ permission will always be checked by default.<br>
-     * The AccessIds and the given permission will throw a Exception if they would be NULL.
-     *
-     * @param permission
-     *            which should be used for results.
-     * @param accessIds
-     *            Users which sould be checked for given permissions on workbaskets.
-     * @return the current query object.
-     * @throws InvalidArgumentException
-     *             when permission OR the accessIds are NULL.
-     * @throws NotAuthorizedException
-     *             if the current user is not member of role BUSINESS_ADMIN or ADMIN
-     */
-    WorkbasketQuery accessIdsHavePermission(WorkbasketPermission permission, String... accessIds)
-        throws InvalidArgumentException, NotAuthorizedException;
+  /**
+   * Setting up the permission which should be granted on the result workbaskets and the users which
+   * should be checked. READ permission will always be checked by default.<br>
+   * The AccessIds and the given permission will throw a Exception if they would be NULL.
+   *
+   * @param permission which should be used for results.
+   * @param accessIds Users which sould be checked for given permissions on workbaskets.
+   * @return the current query object.
+   * @throws InvalidArgumentException when permission OR the accessIds are NULL.
+   * @throws NotAuthorizedException if the current user is not member of role BUSINESS_ADMIN or
+   *     ADMIN
+   */
+  WorkbasketQuery accessIdsHavePermission(WorkbasketPermission permission, String... accessIds)
+      throws InvalidArgumentException, NotAuthorizedException;
 
-    /**
-     * Add condition to query if the caller (one of the accessIds of the caller) has the given permission on the
-     * workbasket.
-     *
-     * @return the updated query.
-     * @param permission
-     *            the permission for the query condition.
-     */
-    WorkbasketQuery callerHasPermission(WorkbasketPermission permission);
+  /**
+   * Add condition to query if the caller (one of the accessIds of the caller) has the given
+   * permission on the workbasket.
+   *
+   * @return the updated query.
+   * @param permission the permission for the query condition.
+   */
+  WorkbasketQuery callerHasPermission(WorkbasketPermission permission);
 
-    /**
-     * Sort the query result by name.
-     *
-     * @param sortDirection
-     *            Determines whether the result is sorted in ascending or descending order. If sortDirection is null,
-     *            the result is sorted in ascending order
-     * @return the query
-     */
-    WorkbasketQuery orderByName(SortDirection sortDirection);
+  /**
+   * Sort the query result by name.
+   *
+   * @param sortDirection Determines whether the result is sorted in ascending or descending order.
+   *     If sortDirection is null, the result is sorted in ascending order
+   * @return the query
+   */
+  WorkbasketQuery orderByName(SortDirection sortDirection);
 
-    /**
-     * Sort the query result by key.
-     *
-     * @param sortDirection
-     *            Determines whether the result is sorted in ascending or descending order. If sortDirection is null,
-     *            the result is sorted in ascending order
-     * @return the query
-     */
-    WorkbasketQuery orderByKey(SortDirection sortDirection);
+  /**
+   * Sort the query result by key.
+   *
+   * @param sortDirection Determines whether the result is sorted in ascending or descending order.
+   *     If sortDirection is null, the result is sorted in ascending order
+   * @return the query
+   */
+  WorkbasketQuery orderByKey(SortDirection sortDirection);
 
-    /**
-     * Sort the query result by description.
-     *
-     * @param sortDirection
-     *            Determines whether the result is sorted in ascending or descending order. If sortDirection is null,
-     *            the result is sorted in ascending order
-     * @return the query
-     */
-    WorkbasketQuery orderByDescription(SortDirection sortDirection);
+  /**
+   * Sort the query result by description.
+   *
+   * @param sortDirection Determines whether the result is sorted in ascending or descending order.
+   *     If sortDirection is null, the result is sorted in ascending order
+   * @return the query
+   */
+  WorkbasketQuery orderByDescription(SortDirection sortDirection);
 
-    /**
-     * Sort the query result by owner.
-     *
-     * @param sortDirection
-     *            Determines whether the result is sorted in ascending or descending order. If sortDirection is null,
-     *            the result is sorted in ascending order
-     * @return the query
-     */
-    WorkbasketQuery orderByOwner(SortDirection sortDirection);
+  /**
+   * Sort the query result by owner.
+   *
+   * @param sortDirection Determines whether the result is sorted in ascending or descending order.
+   *     If sortDirection is null, the result is sorted in ascending order
+   * @return the query
+   */
+  WorkbasketQuery orderByOwner(SortDirection sortDirection);
 
-    /**
-     * Sort the query result by type.
-     *
-     * @param sortDirection
-     *            Determines whether the result is sorted in ascending or descending order. If sortDirection is null,
-     *            the result is sorted in ascending order
-     * @return the query
-     */
-    WorkbasketQuery orderByType(SortDirection sortDirection);
+  /**
+   * Sort the query result by type.
+   *
+   * @param sortDirection Determines whether the result is sorted in ascending or descending order.
+   *     If sortDirection is null, the result is sorted in ascending order
+   * @return the query
+   */
+  WorkbasketQuery orderByType(SortDirection sortDirection);
 
-    /**
-     * Sort the query result by domain.
-     *
-     * @param sortDirection
-     *            Determines whether the result is sorted in ascending or descending order. If sortDirection is null,
-     *            the result is sorted in ascending order
-     * @return the query
-     */
-    WorkbasketQuery orderByDomain(SortDirection sortDirection);
+  /**
+   * Sort the query result by domain.
+   *
+   * @param sortDirection Determines whether the result is sorted in ascending or descending order.
+   *     If sortDirection is null, the result is sorted in ascending order
+   * @return the query
+   */
+  WorkbasketQuery orderByDomain(SortDirection sortDirection);
 
-    /**
-     * Add the domains for pattern matching to your query. It will be compared in SQL with the LIKE operator. You may
-     * use a wildcard like % to specify the pattern. If you specify multiple arguments they are combined with the OR
-     * keyword.
-     *
-     * @param domain
-     *            the domains of workbaskets as Strings
-     * @return the query
-     */
-    WorkbasketQuery domainLike(String... domain);
+  /**
+   * Add the domains for pattern matching to your query. It will be compared in SQL with the LIKE
+   * operator. You may use a wildcard like % to specify the pattern. If you specify multiple
+   * arguments they are combined with the OR keyword.
+   *
+   * @param domain the domains of workbaskets as Strings
+   * @return the query
+   */
+  WorkbasketQuery domainLike(String... domain);
 
-    /**
-     * Sort the query result by custom property 1.
-     *
-     * @param sortDirection
-     *            Determines whether the result is sorted in ascending or descending order. If sortDirection is null,
-     *            the result is sorted in ascending order
-     * @return the query
-     */
-    WorkbasketQuery orderByCustom1(SortDirection sortDirection);
+  /**
+   * Sort the query result by custom property 1.
+   *
+   * @param sortDirection Determines whether the result is sorted in ascending or descending order.
+   *     If sortDirection is null, the result is sorted in ascending order
+   * @return the query
+   */
+  WorkbasketQuery orderByCustom1(SortDirection sortDirection);
 
-    /**
-     * Sort the query result by custom property 2.
-     *
-     * @param sortDirection
-     *            Determines whether the result is sorted in ascending or descending order. If sortDirection is null,
-     *            the result is sorted in ascending order
-     * @return the query
-     */
-    WorkbasketQuery orderByCustom2(SortDirection sortDirection);
+  /**
+   * Sort the query result by custom property 2.
+   *
+   * @param sortDirection Determines whether the result is sorted in ascending or descending order.
+   *     If sortDirection is null, the result is sorted in ascending order
+   * @return the query
+   */
+  WorkbasketQuery orderByCustom2(SortDirection sortDirection);
 
-    /**
-     * Sort the query result by custom property 3.
-     *
-     * @param sortDirection
-     *            Determines whether the result is sorted in ascending or descending order. If sortDirection is null,
-     *            the result is sorted in ascending order
-     * @return the query
-     */
-    WorkbasketQuery orderByCustom3(SortDirection sortDirection);
+  /**
+   * Sort the query result by custom property 3.
+   *
+   * @param sortDirection Determines whether the result is sorted in ascending or descending order.
+   *     If sortDirection is null, the result is sorted in ascending order
+   * @return the query
+   */
+  WorkbasketQuery orderByCustom3(SortDirection sortDirection);
 
-    /**
-     * Sort the query result by custom property 4.
-     *
-     * @param sortDirection
-     *            Determines whether the result is sorted in ascending or descending order. If sortDirection is null,
-     *            the result is sorted in ascending order
-     * @return the query
-     */
-    WorkbasketQuery orderByCustom4(SortDirection sortDirection);
+  /**
+   * Sort the query result by custom property 4.
+   *
+   * @param sortDirection Determines whether the result is sorted in ascending or descending order.
+   *     If sortDirection is null, the result is sorted in ascending order
+   * @return the query
+   */
+  WorkbasketQuery orderByCustom4(SortDirection sortDirection);
 
-    /**
-     * Sort the query result by organization level 1.
-     *
-     * @param sortDirection
-     *            Determines whether the result is sorted in ascending or descending order. If sortDirection is null,
-     *            the result is sorted in ascending order
-     * @return the query
-     */
-    WorkbasketQuery orderByOrgLevel1(SortDirection sortDirection);
+  /**
+   * Sort the query result by organization level 1.
+   *
+   * @param sortDirection Determines whether the result is sorted in ascending or descending order.
+   *     If sortDirection is null, the result is sorted in ascending order
+   * @return the query
+   */
+  WorkbasketQuery orderByOrgLevel1(SortDirection sortDirection);
 
-    /**
-     * Sort the query result by organization level 2.
-     *
-     * @param sortDirection
-     *            Determines whether the result is sorted in ascending or descending order. If sortDirection is null,
-     *            the result is sorted in ascending order
-     * @return the query
-     */
-    WorkbasketQuery orderByOrgLevel2(SortDirection sortDirection);
+  /**
+   * Sort the query result by organization level 2.
+   *
+   * @param sortDirection Determines whether the result is sorted in ascending or descending order.
+   *     If sortDirection is null, the result is sorted in ascending order
+   * @return the query
+   */
+  WorkbasketQuery orderByOrgLevel2(SortDirection sortDirection);
 
-    /**
-     * Sort the query result by organization level 3.
-     *
-     * @param sortDirection
-     *            Determines whether the result is sorted in ascending or descending order. If sortDirection is null,
-     *            the result is sorted in ascending order
-     * @return the query
-     */
-    WorkbasketQuery orderByOrgLevel3(SortDirection sortDirection);
+  /**
+   * Sort the query result by organization level 3.
+   *
+   * @param sortDirection Determines whether the result is sorted in ascending or descending order.
+   *     If sortDirection is null, the result is sorted in ascending order
+   * @return the query
+   */
+  WorkbasketQuery orderByOrgLevel3(SortDirection sortDirection);
 
-    /**
-     * Sort the query result by organization level 4.
-     *
-     * @param sortDirection
-     *            Determines whether the result is sorted in ascending or descending order. If sortDirection is null,
-     *            the result is sorted in ascending order
-     * @return the query
-     */
-    WorkbasketQuery orderByOrgLevel4(SortDirection sortDirection);
+  /**
+   * Sort the query result by organization level 4.
+   *
+   * @param sortDirection Determines whether the result is sorted in ascending or descending order.
+   *     If sortDirection is null, the result is sorted in ascending order
+   * @return the query
+   */
+  WorkbasketQuery orderByOrgLevel4(SortDirection sortDirection);
 
-    /**
-     * Add the 1st custom property to your query.
-     *
-     * @param custom1
-     *            the 1st custom property as String
-     * @return the query
-     */
-    WorkbasketQuery custom1In(String... custom1);
+  /**
+   * Add the 1st custom property to your query.
+   *
+   * @param custom1 the 1st custom property as String
+   * @return the query
+   */
+  WorkbasketQuery custom1In(String... custom1);
 
-    /**
-     * Add the 1st custom property for pattern matching to your query. It will be compared in SQL with the LIKE
-     * operator. You may use a wildcard like % to specify the pattern. If you specify multiple arguments they are
-     * combined with the OR keyword.
-     *
-     * @param custom1
-     *            the 1st custom property of workbaskets as Strings
-     * @return the query
-     */
-    WorkbasketQuery custom1Like(String... custom1);
+  /**
+   * Add the 1st custom property for pattern matching to your query. It will be compared in SQL with
+   * the LIKE operator. You may use a wildcard like % to specify the pattern. If you specify
+   * multiple arguments they are combined with the OR keyword.
+   *
+   * @param custom1 the 1st custom property of workbaskets as Strings
+   * @return the query
+   */
+  WorkbasketQuery custom1Like(String... custom1);
 
-    /**
-     * Add the 2nd custom property to your query.
-     *
-     * @param custom2
-     *            the 2nd custom property as String
-     * @return the query
-     */
-    WorkbasketQuery custom2In(String... custom2);
+  /**
+   * Add the 2nd custom property to your query.
+   *
+   * @param custom2 the 2nd custom property as String
+   * @return the query
+   */
+  WorkbasketQuery custom2In(String... custom2);
 
-    /**
-     * Add the 2nd custom property for pattern matching to your query. It will be compared in SQL with the LIKE
-     * operator. You may use a wildcard like % to specify the pattern. If you specify multiple arguments they are
-     * combined with the OR keyword.
-     *
-     * @param custom2
-     *            the 2nd custom property of workbaskets as Strings
-     * @return the query
-     */
-    WorkbasketQuery custom2Like(String... custom2);
+  /**
+   * Add the 2nd custom property for pattern matching to your query. It will be compared in SQL with
+   * the LIKE operator. You may use a wildcard like % to specify the pattern. If you specify
+   * multiple arguments they are combined with the OR keyword.
+   *
+   * @param custom2 the 2nd custom property of workbaskets as Strings
+   * @return the query
+   */
+  WorkbasketQuery custom2Like(String... custom2);
 
-    /**
-     * Add the 3rd custom property to your query.
-     *
-     * @param custom3
-     *            the 3rd custom property as String
-     * @return the query
-     */
-    WorkbasketQuery custom3In(String... custom3);
+  /**
+   * Add the 3rd custom property to your query.
+   *
+   * @param custom3 the 3rd custom property as String
+   * @return the query
+   */
+  WorkbasketQuery custom3In(String... custom3);
 
-    /**
-     * Add the 3rd custom property for pattern matching to your query. It will be compared in SQL with the LIKE
-     * operator. You may use a wildcard like % to specify the pattern. If you specify multiple arguments they are
-     * combined with the OR keyword.
-     *
-     * @param custom3
-     *            the 3rd custom property of workbaskets as Strings
-     * @return the query
-     */
-    WorkbasketQuery custom3Like(String... custom3);
+  /**
+   * Add the 3rd custom property for pattern matching to your query. It will be compared in SQL with
+   * the LIKE operator. You may use a wildcard like % to specify the pattern. If you specify
+   * multiple arguments they are combined with the OR keyword.
+   *
+   * @param custom3 the 3rd custom property of workbaskets as Strings
+   * @return the query
+   */
+  WorkbasketQuery custom3Like(String... custom3);
 
-    /**
-     * Add the 4th custom property to your query.
-     *
-     * @param custom4
-     *            the 4th custom property as String
-     * @return the query
-     */
-    WorkbasketQuery custom4In(String... custom4);
+  /**
+   * Add the 4th custom property to your query.
+   *
+   * @param custom4 the 4th custom property as String
+   * @return the query
+   */
+  WorkbasketQuery custom4In(String... custom4);
 
-    /**
-     * Add the 4th custom property for pattern matching to your query. It will be compared in SQL with the LIKE
-     * operator. You may use a wildcard like % to specify the pattern. If you specify multiple arguments they are
-     * combined with the OR keyword.
-     *
-     * @param custom4
-     *            the 4th custom property of workbaskets as Strings
-     * @return the query
-     */
-    WorkbasketQuery custom4Like(String... custom4);
+  /**
+   * Add the 4th custom property for pattern matching to your query. It will be compared in SQL with
+   * the LIKE operator. You may use a wildcard like % to specify the pattern. If you specify
+   * multiple arguments they are combined with the OR keyword.
+   *
+   * @param custom4 the 4th custom property of workbaskets as Strings
+   * @return the query
+   */
+  WorkbasketQuery custom4Like(String... custom4);
 
-    /**
-     * Add the 1st organization level to your query.
-     *
-     * @param orgLevel1
-     *            the 1st organization level as String
-     * @return the query
-     */
-    WorkbasketQuery orgLevel1In(String... orgLevel1);
+  /**
+   * Add the 1st organization level to your query.
+   *
+   * @param orgLevel1 the 1st organization level as String
+   * @return the query
+   */
+  WorkbasketQuery orgLevel1In(String... orgLevel1);
 
-    /**
-     * Add the 1st organization level for pattern matching to your query. It will be compared in SQL with the LIKE
-     * operator. You may use a wildcard like % to specify the pattern. If you specify multiple arguments they are
-     * combined with the OR keyword.
-     *
-     * @param orgLevel1
-     *            the 1st organization level as Strings
-     * @return the query
-     */
-    WorkbasketQuery orgLevel1Like(String... orgLevel1);
+  /**
+   * Add the 1st organization level for pattern matching to your query. It will be compared in SQL
+   * with the LIKE operator. You may use a wildcard like % to specify the pattern. If you specify
+   * multiple arguments they are combined with the OR keyword.
+   *
+   * @param orgLevel1 the 1st organization level as Strings
+   * @return the query
+   */
+  WorkbasketQuery orgLevel1Like(String... orgLevel1);
 
-    /**
-     * Add the 2nd organization level to your query.
-     *
-     * @param orgLevel2
-     *            the 2nd organization level as String
-     * @return the query
-     */
-    WorkbasketQuery orgLevel2In(String... orgLevel2);
+  /**
+   * Add the 2nd organization level to your query.
+   *
+   * @param orgLevel2 the 2nd organization level as String
+   * @return the query
+   */
+  WorkbasketQuery orgLevel2In(String... orgLevel2);
 
-    /**
-     * Add the 2nd organization level for pattern matching to your query. It will be compared in SQL with the LIKE
-     * operator. You may use a wildcard like % to specify the pattern. If you specify multiple arguments they are
-     * combined with the OR keyword.
-     *
-     * @param orgLevel2
-     *            the 2nd organization level as Strings
-     * @return the query
-     */
-    WorkbasketQuery orgLevel2Like(String... orgLevel2);
+  /**
+   * Add the 2nd organization level for pattern matching to your query. It will be compared in SQL
+   * with the LIKE operator. You may use a wildcard like % to specify the pattern. If you specify
+   * multiple arguments they are combined with the OR keyword.
+   *
+   * @param orgLevel2 the 2nd organization level as Strings
+   * @return the query
+   */
+  WorkbasketQuery orgLevel2Like(String... orgLevel2);
 
-    /**
-     * Add the 3rd organization level to your query.
-     *
-     * @param orgLevel3
-     *            the 3rd organization level as String
-     * @return the query
-     */
-    WorkbasketQuery orgLevel3In(String... orgLevel3);
+  /**
+   * Add the 3rd organization level to your query.
+   *
+   * @param orgLevel3 the 3rd organization level as String
+   * @return the query
+   */
+  WorkbasketQuery orgLevel3In(String... orgLevel3);
 
-    /**
-     * Add the 3rd organization level for pattern matching to your query. It will be compared in SQL with the LIKE
-     * operator. You may use a wildcard like % to specify the pattern. If you specify multiple arguments they are
-     * combined with the OR keyword.
-     *
-     * @param orgLevel3
-     *            the 3rd organization level as Strings
-     * @return the query
-     */
-    WorkbasketQuery orgLevel3Like(String... orgLevel3);
+  /**
+   * Add the 3rd organization level for pattern matching to your query. It will be compared in SQL
+   * with the LIKE operator. You may use a wildcard like % to specify the pattern. If you specify
+   * multiple arguments they are combined with the OR keyword.
+   *
+   * @param orgLevel3 the 3rd organization level as Strings
+   * @return the query
+   */
+  WorkbasketQuery orgLevel3Like(String... orgLevel3);
 
-    /**
-     * Add the 4th organization level to your query.
-     *
-     * @param orgLevel4
-     *            the 4th organization level as String
-     * @return the query
-     */
-    WorkbasketQuery orgLevel4In(String... orgLevel4);
+  /**
+   * Add the 4th organization level to your query.
+   *
+   * @param orgLevel4 the 4th organization level as String
+   * @return the query
+   */
+  WorkbasketQuery orgLevel4In(String... orgLevel4);
 
-    /**
-     * Add the 4th organization level for pattern matching to your query. It will be compared in SQL with the LIKE
-     * operator. You may use a wildcard like % to specify the pattern. If you specify multiple arguments they are
-     * combined with the OR keyword.
-     *
-     * @param orgLevel4
-     *            the 4th organization level as Strings
-     * @return the query
-     */
-    WorkbasketQuery orgLevel4Like(String... orgLevel4);
-
-    /**
-     * Add to your query if the Workbasket shall be marked for deletion.
-     *
-     * @param markedForDeletion
-     *            a simple flag showing if the workbasket is marked for deletion
-     * @return the query
-     */
-    WorkbasketQuery markedForDeletion(boolean markedForDeletion);
+  /**
+   * Add the 4th organization level for pattern matching to your query. It will be compared in SQL
+   * with the LIKE operator. You may use a wildcard like % to specify the pattern. If you specify
+   * multiple arguments they are combined with the OR keyword.
+   *
+   * @param orgLevel4 the 4th organization level as Strings
+   * @return the query
+   */
+  WorkbasketQuery orgLevel4Like(String... orgLevel4);
 
+  /**
+   * Add to your query if the Workbasket shall be marked for deletion.
+   *
+   * @param markedForDeletion a simple flag showing if the workbasket is marked for deletion
+   * @return the query
+   */
+  WorkbasketQuery markedForDeletion(boolean markedForDeletion);
 }

lib/taskana-core/src/main/java/pro/taskana/WorkbasketQueryColumnName.java

@@ -1,34 +1,35 @@
 package pro.taskana;
 
 /**
- * Enum containing the column names for @see {@link pro.taskana.mappings.QueryMapper#queryWorkbasketColumnValues(pro.taskana.impl.WorkbasketQueryImpl)}.
+ * Enum containing the column names for @see {@link
+ * pro.taskana.mappings.QueryMapper#queryWorkbasketColumnValues(pro.taskana.impl.WorkbasketQueryImpl)}.
  *
  * @author jsa
  */
 public enum WorkbasketQueryColumnName implements QueryColumnName {
+  OWNER("w.owner"),
+  ID("w.id"),
+  KEY("w.key"),
+  NAME("w.name"),
+  DOMAIN("w.domain"),
+  TYPE("w.type"),
+  CUSTOM_1("w.custom_1"),
+  CUSTOM_2("w.custom_2"),
+  CUSTOM_3("w.custom_3"),
+  CUSTOM_4("w.custom_4"),
+  ORG_LEVEL_1("w.org_level_1"),
+  ORG_LEVEL_2("w.org_level_2"),
+  ORG_LEVEL_3("w.org_level_3"),
+  ORG_LEVEL_4("w.org_level_4");
 
-    OWNER("w.owner"),
-    ID("w.id"),
-    KEY("w.key"),
-    NAME("w.name"),
-    DOMAIN("w.domain"),
-    TYPE("w.type"),
-    CUSTOM_1("w.custom_1"),
-    CUSTOM_2("w.custom_2"),
-    CUSTOM_3("w.custom_3"),
-    CUSTOM_4("w.custom_4"),
-    ORG_LEVEL_1("w.org_level_1"),
-    ORG_LEVEL_2("w.org_level_2"),
-    ORG_LEVEL_3("w.org_level_3"),
-    ORG_LEVEL_4("w.org_level_4");
+  private String name;
 
-    private String name;
-    WorkbasketQueryColumnName(String name) {
-        this.name = name;
-    }
+  WorkbasketQueryColumnName(String name) {
+    this.name = name;
+  }
 
-    @Override
-    public String toString() {
-        return name;
-    }
+  @Override
+  public String toString() {
+    return name;
+  }
 }

lib/taskana-core/src/main/java/pro/taskana/WorkbasketService.java

@@ -11,366 +11,315 @@ import pro.taskana.exceptions.WorkbasketAlreadyExistException;
 import pro.taskana.exceptions.WorkbasketInUseException;
 import pro.taskana.exceptions.WorkbasketNotFoundException;
 
-/**
- * This service manages Workbaskets.
- */
+/** This service manages Workbaskets. */
 public interface WorkbasketService {
 
-    /**
-     * Get Workbasket for a given id.
-     *
-     * @param workbasketId
-     *            the Id of the Workbasket requested
-     * @return the requested Workbasket
-     * @throws WorkbasketNotFoundException
-     *             If the Workbasket with workbasketId is not found
-     * @throws NotAuthorizedException
-     *             If the current user or group does not have the permissions for interactions.
-     */
-    Workbasket getWorkbasket(String workbasketId)
-        throws WorkbasketNotFoundException, NotAuthorizedException;
+  /**
+   * Get Workbasket for a given id.
+   *
+   * @param workbasketId the Id of the Workbasket requested
+   * @return the requested Workbasket
+   * @throws WorkbasketNotFoundException If the Workbasket with workbasketId is not found
+   * @throws NotAuthorizedException If the current user or group does not have the permissions for
+   *     interactions.
+   */
+  Workbasket getWorkbasket(String workbasketId)
+      throws WorkbasketNotFoundException, NotAuthorizedException;
 
-    /**
-     * Get Workbasket for a given key.
-     *
-     * @param workbasketKey
-     *            the Key of the Workbasket requested
-     * @param domain
-     *            the domain of the workbasket
-     * @return the requested Workbasket
-     * @throws WorkbasketNotFoundException
-     *             If the Workbasket with workbasketId is not found
-     * @throws NotAuthorizedException
-     *             If the current user or group does not have the permissions for interactions.
-     */
-    Workbasket getWorkbasket(String workbasketKey, String domain)
-        throws WorkbasketNotFoundException, NotAuthorizedException;
+  /**
+   * Get Workbasket for a given key.
+   *
+   * @param workbasketKey the Key of the Workbasket requested
+   * @param domain the domain of the workbasket
+   * @return the requested Workbasket
+   * @throws WorkbasketNotFoundException If the Workbasket with workbasketId is not found
+   * @throws NotAuthorizedException If the current user or group does not have the permissions for
+   *     interactions.
+   */
+  Workbasket getWorkbasket(String workbasketKey, String domain)
+      throws WorkbasketNotFoundException, NotAuthorizedException;
 
-    /**
-     * Create a new Workbasket.
-     *
-     * @param workbasket
-     *            The Workbasket to create
-     * @return the created and persisted Workbasket
-     * @throws InvalidWorkbasketException
-     *             If a required property of the Workbasket is not set.
-     * @throws NotAuthorizedException
-     *             if the current user is not member of role BUSINESS_ADMIN or ADMIN
-     * @throws WorkbasketAlreadyExistException
-     *             if the workbasket exists already
-     * @throws DomainNotFoundException
-     *             if the domain does not exist in the configuration.
-     */
-    Workbasket createWorkbasket(Workbasket workbasket)
-        throws InvalidWorkbasketException, NotAuthorizedException, WorkbasketAlreadyExistException,
-        DomainNotFoundException;
+  /**
+   * Create a new Workbasket.
+   *
+   * @param workbasket The Workbasket to create
+   * @return the created and persisted Workbasket
+   * @throws InvalidWorkbasketException If a required property of the Workbasket is not set.
+   * @throws NotAuthorizedException if the current user is not member of role BUSINESS_ADMIN or
+   *     ADMIN
+   * @throws WorkbasketAlreadyExistException if the workbasket exists already
+   * @throws DomainNotFoundException if the domain does not exist in the configuration.
+   */
+  Workbasket createWorkbasket(Workbasket workbasket)
+      throws InvalidWorkbasketException, NotAuthorizedException, WorkbasketAlreadyExistException,
+          DomainNotFoundException;
 
-    /**
-     * Update a Workbasket.
-     *
-     * @param workbasket
-     *            The Workbasket to update
-     * @return the updated Workbasket
-     * @throws NotAuthorizedException
-     *             if the current user is not authorized to update the work basket
-     */
-    Workbasket updateWorkbasket(Workbasket workbasket)
-        throws NotAuthorizedException;
+  /**
+   * Update a Workbasket.
+   *
+   * @param workbasket The Workbasket to update
+   * @return the updated Workbasket
+   * @throws NotAuthorizedException if the current user is not authorized to update the work basket
+   */
+  Workbasket updateWorkbasket(Workbasket workbasket) throws NotAuthorizedException;
 
-    /**
-     * Returns a new WorkbasketAccessItem which is not persisted.
-     *
-     * @param workbasketId
-     *            the workbasket id used to identify the referenced workbasket
-     * @param accessId
-     *            the group id or user id for which access is controlled
-     * @return new WorkbasketAccessItem
-     */
-    WorkbasketAccessItem newWorkbasketAccessItem(String workbasketId, String accessId);
+  /**
+   * Returns a new WorkbasketAccessItem which is not persisted.
+   *
+   * @param workbasketId the workbasket id used to identify the referenced workbasket
+   * @param accessId the group id or user id for which access is controlled
+   * @return new WorkbasketAccessItem
+   */
+  WorkbasketAccessItem newWorkbasketAccessItem(String workbasketId, String accessId);
 
-    /**
-     * Create and persist a new {@link WorkbasketAccessItem} with a WorkbasketId, an accessId and permissions.
-     *
-     * @param workbasketAccessItem
-     *            the new workbasketAccessItem
-     * @return the created WorkbasketAccessItem
-     * @throws InvalidArgumentException
-     *             when the preconditions dont match the required ones.
-     * @throws NotAuthorizedException
-     *             if the current user is not member of role BUSINESS_ADMIN or ADMIN
-     * @throws WorkbasketNotFoundException
-     *             if the workbasketAccessItem refers to a not existing workbasket
-     */
-    WorkbasketAccessItem createWorkbasketAccessItem(WorkbasketAccessItem workbasketAccessItem)
-        throws InvalidArgumentException, NotAuthorizedException, WorkbasketNotFoundException;
+  /**
+   * Create and persist a new {@link WorkbasketAccessItem} with a WorkbasketId, an accessId and
+   * permissions.
+   *
+   * @param workbasketAccessItem the new workbasketAccessItem
+   * @return the created WorkbasketAccessItem
+   * @throws InvalidArgumentException when the preconditions dont match the required ones.
+   * @throws NotAuthorizedException if the current user is not member of role BUSINESS_ADMIN or
+   *     ADMIN
+   * @throws WorkbasketNotFoundException if the workbasketAccessItem refers to a not existing
+   *     workbasket
+   */
+  WorkbasketAccessItem createWorkbasketAccessItem(WorkbasketAccessItem workbasketAccessItem)
+      throws InvalidArgumentException, NotAuthorizedException, WorkbasketNotFoundException;
 
-    /**
-     * This method updates a {@link WorkbasketAccessItem}.
-     *
-     * @param workbasketAccessItem
-     *            the {@link WorkbasketAccessItem}
-     * @return the updated entity
-     * @throws InvalidArgumentException
-     *             if accessid or workbasketId is changed in the workbasketAccessItem
-     * @throws NotAuthorizedException
-     *             if the current user is not member of role BUSINESS_ADMIN or ADMIN
-     */
-    WorkbasketAccessItem updateWorkbasketAccessItem(WorkbasketAccessItem workbasketAccessItem)
-        throws InvalidArgumentException, NotAuthorizedException;
+  /**
+   * This method updates a {@link WorkbasketAccessItem}.
+   *
+   * @param workbasketAccessItem the {@link WorkbasketAccessItem}
+   * @return the updated entity
+   * @throws InvalidArgumentException if accessid or workbasketId is changed in the
+   *     workbasketAccessItem
+   * @throws NotAuthorizedException if the current user is not member of role BUSINESS_ADMIN or
+   *     ADMIN
+   */
+  WorkbasketAccessItem updateWorkbasketAccessItem(WorkbasketAccessItem workbasketAccessItem)
+      throws InvalidArgumentException, NotAuthorizedException;
 
-    /**
-     * Deletes a specific {@link WorkbasketAccessItem}.
-     *
-     * @param id
-     *            the id of the WorbasketAccessItem to be deleted
-     * @throws NotAuthorizedException
-     *             if the current user is not member of role BUSINESS_ADMIN or ADMIN
-     */
-    void deleteWorkbasketAccessItem(String id) throws NotAuthorizedException;
+  /**
+   * Deletes a specific {@link WorkbasketAccessItem}.
+   *
+   * @param id the id of the WorbasketAccessItem to be deleted
+   * @throws NotAuthorizedException if the current user is not member of role BUSINESS_ADMIN or
+   *     ADMIN
+   */
+  void deleteWorkbasketAccessItem(String id) throws NotAuthorizedException;
 
-    /**
-     * This method checks the authorization for the actual User.
-     *
-     * @param workbasketId
-     *            the id of the workbasket we want to access
-     * @param permission
-     *            the needed {@link WorkbasketPermission} If more than one permission is specified, the current user
-     *            needs all of them.
-     * @throws NotAuthorizedException
-     *             if the current user has not the requested authorization for the specified workbasket
-     * @throws WorkbasketNotFoundException
-     *             if the workbasket cannot be found for the given ID.
-     */
-    void checkAuthorization(String workbasketId, WorkbasketPermission... permission)
-        throws NotAuthorizedException, WorkbasketNotFoundException;
+  /**
+   * This method checks the authorization for the actual User.
+   *
+   * @param workbasketId the id of the workbasket we want to access
+   * @param permission the needed {@link WorkbasketPermission} If more than one permission is
+   *     specified, the current user needs all of them.
+   * @throws NotAuthorizedException if the current user has not the requested authorization for the
+   *     specified workbasket
+   * @throws WorkbasketNotFoundException if the workbasket cannot be found for the given ID.
+   */
+  void checkAuthorization(String workbasketId, WorkbasketPermission... permission)
+      throws NotAuthorizedException, WorkbasketNotFoundException;
 
-    /**
-     * This method checks the authorization for the actual User.
-     *
-     * @param workbasketKey
-     *            the key of the workbasket we want to access
-     * @param domain
-     *            the domain of the workbasket we want to access
-     * @param permission
-     *            the needed {@link WorkbasketPermission}. If more than one permission is specified, the current user
-     *            needs all of them.
-     * @throws NotAuthorizedException
-     *             if the current user has not the requested permission for the specified workbasket
-     * @throws WorkbasketNotFoundException
-     *             if no workbasket can be found for the given key+domain values.
-     */
-    void checkAuthorization(String workbasketKey, String domain, WorkbasketPermission... permission)
-        throws NotAuthorizedException, WorkbasketNotFoundException;
+  /**
+   * This method checks the authorization for the actual User.
+   *
+   * @param workbasketKey the key of the workbasket we want to access
+   * @param domain the domain of the workbasket we want to access
+   * @param permission the needed {@link WorkbasketPermission}. If more than one permission is
+   *     specified, the current user needs all of them.
+   * @throws NotAuthorizedException if the current user has not the requested permission for the
+   *     specified workbasket
+   * @throws WorkbasketNotFoundException if no workbasket can be found for the given key+domain
+   *     values.
+   */
+  void checkAuthorization(String workbasketKey, String domain, WorkbasketPermission... permission)
+      throws NotAuthorizedException, WorkbasketNotFoundException;
 
-    /**
-     * Get all {@link WorkbasketAccessItem s} for a Workbasket.
-     *
-     * @param workbasketId
-     *            the id of the Workbasket
-     * @return List of WorkbasketAccessItems for the Workbasket with workbasketKey
-     * @throws NotAuthorizedException
-     *             if the current user is not member of role BUSINESS_ADMIN or ADMIN
-     */
-    List<WorkbasketAccessItem> getWorkbasketAccessItems(String workbasketId) throws NotAuthorizedException;
+  /**
+   * Get all {@link WorkbasketAccessItem s} for a Workbasket.
+   *
+   * @param workbasketId the id of the Workbasket
+   * @return List of WorkbasketAccessItems for the Workbasket with workbasketKey
+   * @throws NotAuthorizedException if the current user is not member of role BUSINESS_ADMIN or
+   *     ADMIN
+   */
+  List<WorkbasketAccessItem> getWorkbasketAccessItems(String workbasketId)
+      throws NotAuthorizedException;
 
-    /**
-     * Setting up the new WorkbasketAccessItems for a Workbasket. Already stored values will be completely replaced by
-     * the current ones.
-     *
-     * @param workbasketId
-     *            ID of the access-target workbasket.
-     * @param wbAccessItems
-     *            List of WorkbasketAccessItems which does replace all current stored ones.
-     * @throws InvalidArgumentException
-     *             will be thrown when the parameter is NULL or member doesn´t match the preconditions
-     * @throws NotAuthorizedException
-     *             if the current user is not member of role BUSINESS_ADMIN or ADMIN
-     */
-    void setWorkbasketAccessItems(String workbasketId, List<WorkbasketAccessItem> wbAccessItems)
-        throws InvalidArgumentException, NotAuthorizedException;
+  /**
+   * Setting up the new WorkbasketAccessItems for a Workbasket. Already stored values will be
+   * completely replaced by the current ones.
+   *
+   * @param workbasketId ID of the access-target workbasket.
+   * @param wbAccessItems List of WorkbasketAccessItems which does replace all current stored ones.
+   * @throws InvalidArgumentException will be thrown when the parameter is NULL or member doesn´t
+   *     match the preconditions
+   * @throws NotAuthorizedException if the current user is not member of role BUSINESS_ADMIN or
+   *     ADMIN
+   */
+  void setWorkbasketAccessItems(String workbasketId, List<WorkbasketAccessItem> wbAccessItems)
+      throws InvalidArgumentException, NotAuthorizedException;
 
-    /**
-     * This method provides a query builder for querying the database.
-     *
-     * @return a {@link WorkbasketQuery}
-     */
-    WorkbasketQuery createWorkbasketQuery();
+  /**
+   * This method provides a query builder for querying the database.
+   *
+   * @return a {@link WorkbasketQuery}
+   */
+  WorkbasketQuery createWorkbasketQuery();
 
-    /**
-     * This method provides a query builder for querying the database.
-     *
-     * @return a {@link WorkbasketAccessItemQuery}
-     * @throws NotAuthorizedException
-     *             if the current user is not member of role BUSINESS_ADMIN or ADMIN
-     */
-    WorkbasketAccessItemQuery createWorkbasketAccessItemQuery() throws NotAuthorizedException;
+  /**
+   * This method provides a query builder for querying the database.
+   *
+   * @return a {@link WorkbasketAccessItemQuery}
+   * @throws NotAuthorizedException if the current user is not member of role BUSINESS_ADMIN or
+   *     ADMIN
+   */
+  WorkbasketAccessItemQuery createWorkbasketAccessItemQuery() throws NotAuthorizedException;
 
-    /**
-     * Returns a new workbasket which is not persisted.
-     *
-     * @param key
-     *            the workbasket key used to identify the workbasket
-     * @param domain
-     *            the domain of the new workbasket
-     * @return new Workbasket
-     */
-    Workbasket newWorkbasket(String key, String domain);
+  /**
+   * Returns a new workbasket which is not persisted.
+   *
+   * @param key the workbasket key used to identify the workbasket
+   * @param domain the domain of the new workbasket
+   * @return new Workbasket
+   */
+  Workbasket newWorkbasket(String key, String domain);
 
-    /**
-     * Returns a set with all permissions of the current user at this workbasket.<br>
-     * If the workbasketId is invalid, an empty list of permissions is returned since there is no distinction made
-     * between the situation that the workbasket is not found and the caller has no permissions on the workbasket.
-     *
-     * @param workbasketId
-     *            the id of the referenced workbasket
-     * @return a {@link List} with all {@link WorkbasketPermission}s of the caller on the requested workbasket.
-     */
-    List<WorkbasketPermission> getPermissionsForWorkbasket(String workbasketId);
+  /**
+   * Returns a set with all permissions of the current user at this workbasket.<br>
+   * If the workbasketId is invalid, an empty list of permissions is returned since there is no
+   * distinction made between the situation that the workbasket is not found and the caller has no
+   * permissions on the workbasket.
+   *
+   * @param workbasketId the id of the referenced workbasket
+   * @return a {@link List} with all {@link WorkbasketPermission}s of the caller on the requested
+   *     workbasket.
+   */
+  List<WorkbasketPermission> getPermissionsForWorkbasket(String workbasketId);
 
-    /**
-     * Returns the distribution targets for a given workbasket.
-     *
-     * @param workbasketId
-     *            the id of the referenced workbasket
-     * @return the distribution targets of the specified workbasket
-     * @throws NotAuthorizedException
-     *             if the current user has no read permission for the specified workbasket
-     * @throws WorkbasketNotFoundException
-     *             if the workbasket doesn't exist
-     */
-    List<WorkbasketSummary> getDistributionTargets(String workbasketId)
-        throws NotAuthorizedException, WorkbasketNotFoundException;
+  /**
+   * Returns the distribution targets for a given workbasket.
+   *
+   * @param workbasketId the id of the referenced workbasket
+   * @return the distribution targets of the specified workbasket
+   * @throws NotAuthorizedException if the current user has no read permission for the specified
+   *     workbasket
+   * @throws WorkbasketNotFoundException if the workbasket doesn't exist
+   */
+  List<WorkbasketSummary> getDistributionTargets(String workbasketId)
+      throws NotAuthorizedException, WorkbasketNotFoundException;
 
-    /**
-     * Returns the distribution targets for a given workbasket.
-     *
-     * @param workbasketKey
-     *            the key of the referenced workbasket
-     * @param domain
-     *            the domain of the referenced workbasket
-     * @return the distribution targets of the specified workbasket
-     * @throws NotAuthorizedException
-     *             if the current user has no read permission for the specified workbasket
-     * @throws WorkbasketNotFoundException
-     *             if the workbasket doesn't exist
-     */
-    List<WorkbasketSummary> getDistributionTargets(String workbasketKey, String domain)
-        throws NotAuthorizedException, WorkbasketNotFoundException;
+  /**
+   * Returns the distribution targets for a given workbasket.
+   *
+   * @param workbasketKey the key of the referenced workbasket
+   * @param domain the domain of the referenced workbasket
+   * @return the distribution targets of the specified workbasket
+   * @throws NotAuthorizedException if the current user has no read permission for the specified
+   *     workbasket
+   * @throws WorkbasketNotFoundException if the workbasket doesn't exist
+   */
+  List<WorkbasketSummary> getDistributionTargets(String workbasketKey, String domain)
+      throws NotAuthorizedException, WorkbasketNotFoundException;
 
-    /**
-     * Set the distribution targets for a workbasket.
-     *
-     * @param sourceWorkbasketId
-     *            the id of the source workbasket for which the distribution targets are to be set
-     * @param targetWorkbasketIds
-     *            a list of the ids of the target workbaskets
-     * @throws NotAuthorizedException
-     *             if the current used doesn't have READ permission for the source workbasket
-     * @throws WorkbasketNotFoundException
-     *             if either the source workbasket or any of the target workbaskets don't exist
-     */
-    void setDistributionTargets(String sourceWorkbasketId, List<String> targetWorkbasketIds)
-        throws NotAuthorizedException, WorkbasketNotFoundException;
+  /**
+   * Set the distribution targets for a workbasket.
+   *
+   * @param sourceWorkbasketId the id of the source workbasket for which the distribution targets
+   *     are to be set
+   * @param targetWorkbasketIds a list of the ids of the target workbaskets
+   * @throws NotAuthorizedException if the current used doesn't have READ permission for the source
+   *     workbasket
+   * @throws WorkbasketNotFoundException if either the source workbasket or any of the target
+   *     workbaskets don't exist
+   */
+  void setDistributionTargets(String sourceWorkbasketId, List<String> targetWorkbasketIds)
+      throws NotAuthorizedException, WorkbasketNotFoundException;
 
-    /**
-     * Add a distribution target to a workbasket. If the specified distribution target exists already, the method
-     * silently returns without doing anything.
-     *
-     * @param sourceWorkbasketId
-     *            the id of the source workbasket
-     * @param targetWorkbasketId
-     *            the id of the target workbasket
-     * @throws NotAuthorizedException
-     *             if the current user doesn't have READ permission for the source workbasket
-     * @throws WorkbasketNotFoundException
-     *             if either the source workbasket or the target workbasket doesn't exist
-     */
-    void addDistributionTarget(String sourceWorkbasketId, String targetWorkbasketId)
-        throws NotAuthorizedException, WorkbasketNotFoundException;
+  /**
+   * Add a distribution target to a workbasket. If the specified distribution target exists already,
+   * the method silently returns without doing anything.
+   *
+   * @param sourceWorkbasketId the id of the source workbasket
+   * @param targetWorkbasketId the id of the target workbasket
+   * @throws NotAuthorizedException if the current user doesn't have READ permission for the source
+   *     workbasket
+   * @throws WorkbasketNotFoundException if either the source workbasket or the target workbasket
+   *     doesn't exist
+   */
+  void addDistributionTarget(String sourceWorkbasketId, String targetWorkbasketId)
+      throws NotAuthorizedException, WorkbasketNotFoundException;
 
-    /**
-     * Remove a distribution target from a workbasket. If the the specified distribution target doesn't exist, the
-     * method silently returns without doing anything.
-     *
-     * @param sourceWorkbasketId
-     *            The id of the source workbasket
-     * @param targetWorkbasketId
-     *            The id of the target workbasket
-     * @throws NotAuthorizedException
-     *             If the current user doesn't have READ permission for the source workbasket
-     */
-    void removeDistributionTarget(String sourceWorkbasketId, String targetWorkbasketId)
-        throws NotAuthorizedException;
+  /**
+   * Remove a distribution target from a workbasket. If the the specified distribution target
+   * doesn't exist, the method silently returns without doing anything.
+   *
+   * @param sourceWorkbasketId The id of the source workbasket
+   * @param targetWorkbasketId The id of the target workbasket
+   * @throws NotAuthorizedException If the current user doesn't have READ permission for the source
+   *     workbasket
+   */
+  void removeDistributionTarget(String sourceWorkbasketId, String targetWorkbasketId)
+      throws NotAuthorizedException;
 
-    /**
-     * Deletes the workbasket by the given ID of it.
-     *
-     * @param workbasketId
-     *            Id of the workbasket which should be deleted.
-     * @return true if the workbasket is marked for deletion. False in another case.
-     * @throws NotAuthorizedException
-     *             if the current user got no permissions for this interaction.
-     * @throws WorkbasketNotFoundException
-     *             if the workbasket does not exist.
-     * @throws WorkbasketInUseException
-     *             if the workbasket does contain task-content.
-     * @throws InvalidArgumentException
-     *             if the workbasketId is NULL or EMPTY
-     */
-    boolean deleteWorkbasket(String workbasketId)
-        throws NotAuthorizedException, WorkbasketNotFoundException, WorkbasketInUseException, InvalidArgumentException;
+  /**
+   * Deletes the workbasket by the given ID of it.
+   *
+   * @param workbasketId Id of the workbasket which should be deleted.
+   * @return true if the workbasket is marked for deletion. False in another case.
+   * @throws NotAuthorizedException if the current user got no permissions for this interaction.
+   * @throws WorkbasketNotFoundException if the workbasket does not exist.
+   * @throws WorkbasketInUseException if the workbasket does contain task-content.
+   * @throws InvalidArgumentException if the workbasketId is NULL or EMPTY
+   */
+  boolean deleteWorkbasket(String workbasketId)
+      throws NotAuthorizedException, WorkbasketNotFoundException, WorkbasketInUseException,
+          InvalidArgumentException;
 
-    /**
-     * Deletes a list of workbaskets.
-     *
-     * @param workbasketsIds
-     *            the ids of the workbaskets to delete.
-     * @return the result of the operations with Id and Exception for each failed workbasket deletion.
-     * @throws InvalidArgumentException
-     *             if the WorkbasketIds parameter list is NULL or empty
-     * @throws NotAuthorizedException
-     *             if the current user got no permission for this interaction.
-     */
-    BulkOperationResults<String, TaskanaException> deleteWorkbaskets(List<String> workbasketsIds)
-        throws NotAuthorizedException, InvalidArgumentException;
+  /**
+   * Deletes a list of workbaskets.
+   *
+   * @param workbasketsIds the ids of the workbaskets to delete.
+   * @return the result of the operations with Id and Exception for each failed workbasket deletion.
+   * @throws InvalidArgumentException if the WorkbasketIds parameter list is NULL or empty
+   * @throws NotAuthorizedException if the current user got no permission for this interaction.
+   */
+  BulkOperationResults<String, TaskanaException> deleteWorkbaskets(List<String> workbasketsIds)
+      throws NotAuthorizedException, InvalidArgumentException;
 
-    /**
-     * Returns the distribution sources for a given workbasket.
-     *
-     * @param workbasketId
-     *            the id of the referenced workbasket
-     * @return the workbaskets that are distribution sources of the specified workbasket.
-     * @throws NotAuthorizedException
-     *             if the current user has no read permission for the specified workbasket
-     * @throws WorkbasketNotFoundException
-     *             if the workbasket doesn't exist
-     */
-    List<WorkbasketSummary> getDistributionSources(String workbasketId)
-        throws NotAuthorizedException, WorkbasketNotFoundException;
+  /**
+   * Returns the distribution sources for a given workbasket.
+   *
+   * @param workbasketId the id of the referenced workbasket
+   * @return the workbaskets that are distribution sources of the specified workbasket.
+   * @throws NotAuthorizedException if the current user has no read permission for the specified
+   *     workbasket
+   * @throws WorkbasketNotFoundException if the workbasket doesn't exist
+   */
+  List<WorkbasketSummary> getDistributionSources(String workbasketId)
+      throws NotAuthorizedException, WorkbasketNotFoundException;
 
-    /**
-     * Returns the distribution sources for a given workbasket.
-     *
-     * @param workbasketKey
-     *            the key of the referenced workbasket
-     * @param domain
-     *            the domain of the referenced workbasket
-     * @return the workbaskets that are distribution sources of the specified workbasket.
-     * @throws NotAuthorizedException
-     *             if the current user has no read permission for the specified workbasket
-     * @throws WorkbasketNotFoundException
-     *             if the workbasket doesn't exist
-     */
-    List<WorkbasketSummary> getDistributionSources(String workbasketKey, String domain)
-        throws NotAuthorizedException, WorkbasketNotFoundException;
+  /**
+   * Returns the distribution sources for a given workbasket.
+   *
+   * @param workbasketKey the key of the referenced workbasket
+   * @param domain the domain of the referenced workbasket
+   * @return the workbaskets that are distribution sources of the specified workbasket.
+   * @throws NotAuthorizedException if the current user has no read permission for the specified
+   *     workbasket
+   * @throws WorkbasketNotFoundException if the workbasket doesn't exist
+   */
+  List<WorkbasketSummary> getDistributionSources(String workbasketKey, String domain)
+      throws NotAuthorizedException, WorkbasketNotFoundException;
 
-    /**
-     * Deletes all WorkbasketAccessItems using the given AccessId of a user.
-     *
-     * @param accessId
-     *            of a taskana-user.
-     * @throws NotAuthorizedException
-     *             if the current user is not member of role BUSINESS_ADMIN or ADMIN
-     */
-    void deleteWorkbasketAccessItemsForAccessId(String accessId) throws NotAuthorizedException;
+  /**
+   * Deletes all WorkbasketAccessItems using the given AccessId of a user.
+   *
+   * @param accessId of a taskana-user.
+   * @throws NotAuthorizedException if the current user is not member of role BUSINESS_ADMIN or
+   *     ADMIN
+   */
+  void deleteWorkbasketAccessItemsForAccessId(String accessId) throws NotAuthorizedException;
 }

lib/taskana-core/src/main/java/pro/taskana/WorkbasketSummary.java

@@ -1,121 +1,120 @@
 package pro.taskana;
 
 /**
- * Interface for WorkbasketSummary. This is a specific short model-object which only contains the most important
- * information.
+ * Interface for WorkbasketSummary. This is a specific short model-object which only contains the
+ * most important information.
  */
 public interface WorkbasketSummary {
 
-    /**
-     * Gets the id of the workbasket.
-     *
-     * @return workbasketId
-     */
-    String getId();
+  /**
+   * Gets the id of the workbasket.
+   *
+   * @return workbasketId
+   */
+  String getId();
 
-    /**
-     * Gets the key of the workbasket.
-     *
-     * @return workbasketKey
-     */
-    String getKey();
+  /**
+   * Gets the key of the workbasket.
+   *
+   * @return workbasketKey
+   */
+  String getKey();
 
-    /**
-     * Gets the name of the workbasket.
-     *
-     * @return workbasket's name
-     */
-    String getName();
+  /**
+   * Gets the name of the workbasket.
+   *
+   * @return workbasket's name
+   */
+  String getName();
 
-    /**
-     * Gets the description of the workbasket.
-     *
-     * @return workbasket's description
-     */
-    String getDescription();
+  /**
+   * Gets the description of the workbasket.
+   *
+   * @return workbasket's description
+   */
+  String getDescription();
 
-    /**
-     * Gets the owner of the workbasket.
-     *
-     * @return workbasket's owner
-     */
-    String getOwner();
+  /**
+   * Gets the owner of the workbasket.
+   *
+   * @return workbasket's owner
+   */
+  String getOwner();
 
-    /**
-     * Gets the domain of the workbasket.
-     *
-     * @return workbasket's domain
-     */
-    String getDomain();
+  /**
+   * Gets the domain of the workbasket.
+   *
+   * @return workbasket's domain
+   */
+  String getDomain();
 
-    /**
-     * Gets the type of the workbasket.
-     *
-     * @return workbasket's type
-     */
-    WorkbasketType getType();
+  /**
+   * Gets the type of the workbasket.
+   *
+   * @return workbasket's type
+   */
+  WorkbasketType getType();
 
-    /**
-     *  Gets the custom1 property of the workbasket.
-     *
-     * @return the workbasket's custom1 property.
-     */
-    String getCustom1();
+  /**
+   * Gets the custom1 property of the workbasket.
+   *
+   * @return the workbasket's custom1 property.
+   */
+  String getCustom1();
 
-    /**
-     *  Gets the custom2 property of the workbasket.
-     *
-     * @return the workbasket's custom2 property.
-     */
-    String getCustom2();
+  /**
+   * Gets the custom2 property of the workbasket.
+   *
+   * @return the workbasket's custom2 property.
+   */
+  String getCustom2();
 
-    /**
-     *  Gets the custom3 property of the workbasket.
-     *
-     * @return the workbasket's custom3 property.
-     */
-    String getCustom3();
+  /**
+   * Gets the custom3 property of the workbasket.
+   *
+   * @return the workbasket's custom3 property.
+   */
+  String getCustom3();
 
-    /**
-     *  Gets the custom4 property of the workbasket.
-     *
-     * @return the workbasket's custom4 property.
-     */
-    String getCustom4();
+  /**
+   * Gets the custom4 property of the workbasket.
+   *
+   * @return the workbasket's custom4 property.
+   */
+  String getCustom4();
 
-    /**
-     * Gets the orglevel1 property of the workbasket.
-     *
-     * @return the workbasket's orglevel1 property
-     */
-    String getOrgLevel1();
+  /**
+   * Gets the orglevel1 property of the workbasket.
+   *
+   * @return the workbasket's orglevel1 property
+   */
+  String getOrgLevel1();
 
-    /**
-     * Gets the orglevel2 property of the workbasket.
-     *
-     * @return the workbasket's orglevel2 property
-     */
-    String getOrgLevel2();
+  /**
+   * Gets the orglevel2 property of the workbasket.
+   *
+   * @return the workbasket's orglevel2 property
+   */
+  String getOrgLevel2();
 
-    /**
-     * Gets the orglevel3 property of the workbasket.
-     *
-     * @return the workbasket's orglevel3 property
-     */
-    String getOrgLevel3();
+  /**
+   * Gets the orglevel3 property of the workbasket.
+   *
+   * @return the workbasket's orglevel3 property
+   */
+  String getOrgLevel3();
 
-    /**
-     * Gets the orglevel4 property of the workbasket.
-     *
-     * @return the workbasket's orglevel4 property
-     */
-    String getOrgLevel4();
-
-    /**
-     * Gets the markedForDeletion property of the workbasket.
-     *
-     * @return the workbasket's markedForDeletion property
-     */
-    boolean isMarkedForDeletion();
+  /**
+   * Gets the orglevel4 property of the workbasket.
+   *
+   * @return the workbasket's orglevel4 property
+   */
+  String getOrgLevel4();
 
+  /**
+   * Gets the markedForDeletion property of the workbasket.
+   *
+   * @return the workbasket's markedForDeletion property
+   */
+  boolean isMarkedForDeletion();
 }

lib/taskana-core/src/main/java/pro/taskana/WorkbasketType.java

@@ -1,8 +1,9 @@
 package pro.taskana;
 
-/**
- * This enum contains the supported work basket types.
- */
+/** This enum contains the supported work basket types. */
 public enum WorkbasketType {
-    GROUP, PERSONAL, TOPIC, CLEARANCE
+  GROUP,
+  PERSONAL,
+  TOPIC,
+  CLEARANCE
 }

lib/taskana-core/src/main/java/pro/taskana/configuration/DB.java

@@ -2,45 +2,42 @@ package pro.taskana.configuration;
 
 import pro.taskana.exceptions.UnsupportedDatabaseException;
 
-/**
- * Supported versions of databases.
- */
+/** Supported versions of databases. */
 public enum DB {
+  H2("H2", "h2"),
+  DB2("DB2", "db2"),
+  POSTGRESS("PostgreSQL", "postgres");
 
-    H2("H2", "h2"),
-    DB2("DB2", "db2"),
-    POSTGRESS("PostgreSQL", "postgres");
+  public final String dbProductname;
+  public final String dbProductId;
 
-    public final String dbProductname;
-    public final String dbProductId;
+  DB(String dbProductname, String dbProductId) {
+    this.dbProductname = dbProductname;
+    this.dbProductId = dbProductId;
+  }
 
-    DB(String dbProductname, String dbProductId) {
-        this.dbProductname = dbProductname;
-        this.dbProductId = dbProductId;
-    }
-
-    public static boolean isDb2(String dbProductName) {
-        return dbProductName != null && dbProductName.contains(DB2.dbProductname);
-    }
-
-    public static boolean isH2(String dbProductName) {
-        return dbProductName != null && dbProductName.contains(H2.dbProductname);
-    }
-
-    public static boolean isPostgreSQL(String dbProductName) {
-        return POSTGRESS.dbProductname.equals(dbProductName);
-    }
-
-    public static String getDatabaseProductId(String dbProductName) {
-
-        if (isDb2(dbProductName)) {
-            return DB2.dbProductId;
-        } else if (isH2(dbProductName)) {
-            return H2.dbProductId;
-        } else if (isPostgreSQL(dbProductName)) {
-            return POSTGRESS.dbProductId;
-        } else {
-            throw new UnsupportedDatabaseException(dbProductName);
-        }
+  public static boolean isDb2(String dbProductName) {
+    return dbProductName != null && dbProductName.contains(DB2.dbProductname);
+  }
+
+  public static boolean isH2(String dbProductName) {
+    return dbProductName != null && dbProductName.contains(H2.dbProductname);
+  }
+
+  public static boolean isPostgreSQL(String dbProductName) {
+    return POSTGRESS.dbProductname.equals(dbProductName);
+  }
+
+  public static String getDatabaseProductId(String dbProductName) {
+
+    if (isDb2(dbProductName)) {
+      return DB2.dbProductId;
+    } else if (isH2(dbProductName)) {
+      return H2.dbProductId;
+    } else if (isPostgreSQL(dbProductName)) {
+      return POSTGRESS.dbProductId;
+    } else {
+      throw new UnsupportedDatabaseException(dbProductName);
     }
+  }
 }

lib/taskana-core/src/main/java/pro/taskana/configuration/DbSchemaCreator.java

@@ -11,163 +11,164 @@ import java.nio.charset.StandardCharsets;
 import java.sql.Connection;
 import java.sql.SQLException;
 import java.util.Map;
-
 import javax.sql.DataSource;
-
 import org.apache.ibatis.jdbc.ScriptRunner;
 import org.apache.ibatis.jdbc.SqlRunner;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
-/**
- * This class create the schema for taskana.
- */
+/** This class create the schema for taskana. */
 public class DbSchemaCreator {
 
-    private static final Logger LOGGER = LoggerFactory.getLogger(DbSchemaCreator.class);
-    private static final String SQL = "/sql";
-    private static final String DB_SCHEMA = SQL + "/taskana-schema.sql";
-    private static final String DB_SCHEMA_DB2 = SQL + "/taskana-schema-db2.sql";
-    private static final String DB_SCHEMA_POSTGRES = SQL + "/taskana-schema-postgres.sql";
-    private static final String DB_SCHEMA_DETECTION = SQL + "/schema-detection.sql";
-    private static final String DB_SCHEMA_DETECTION_POSTGRES = SQL + "/schema-detection-postgres.sql";
+  private static final Logger LOGGER = LoggerFactory.getLogger(DbSchemaCreator.class);
+  private static final String SQL = "/sql";
+  private static final String DB_SCHEMA = SQL + "/taskana-schema.sql";
+  private static final String DB_SCHEMA_DB2 = SQL + "/taskana-schema-db2.sql";
+  private static final String DB_SCHEMA_POSTGRES = SQL + "/taskana-schema-postgres.sql";
+  private static final String DB_SCHEMA_DETECTION = SQL + "/schema-detection.sql";
+  private static final String DB_SCHEMA_DETECTION_POSTGRES = SQL + "/schema-detection-postgres.sql";
 
-    private DataSource dataSource;
-    private String schemaName;
-    private StringWriter outWriter = new StringWriter();
-    private PrintWriter logWriter = new PrintWriter(outWriter);
-    private StringWriter errorWriter = new StringWriter();
-    private PrintWriter errorLogWriter = new PrintWriter(errorWriter);
+  private DataSource dataSource;
+  private String schemaName;
+  private StringWriter outWriter = new StringWriter();
+  private PrintWriter logWriter = new PrintWriter(outWriter);
+  private StringWriter errorWriter = new StringWriter();
+  private PrintWriter errorLogWriter = new PrintWriter(errorWriter);
 
-    public DbSchemaCreator(DataSource dataSource, String schema) {
-        super();
-        this.dataSource = dataSource;
-        this.schemaName = schema;
+  public DbSchemaCreator(DataSource dataSource, String schema) {
+    super();
+    this.dataSource = dataSource;
+    this.schemaName = schema;
+  }
+
+  /**
+   * Run all db scripts.
+   *
+   * @throws SQLException will be thrown if there will be some incorrect SQL statements invoked.
+   */
+  public void run() throws SQLException {
+    Connection connection = dataSource.getConnection();
+    LOGGER.debug(
+        "Using database of type {} with url '{}'",
+        connection.getMetaData().getDatabaseProductName(),
+        connection.getMetaData().getURL());
+    ScriptRunner runner = getScriptRunnerInstance(connection);
+    try {
+      if (!isSchemaPreexisting(connection)) {
+        String scriptPath =
+            selectDbScriptFileName(connection.getMetaData().getDatabaseProductName());
+        InputStream resourceAsStream = this.getClass().getResourceAsStream(scriptPath);
+        BufferedReader reader =
+            new BufferedReader(new InputStreamReader(resourceAsStream, StandardCharsets.UTF_8));
+        runner.runScript(getSqlSchemaNameParsed(reader));
+      }
+    } finally {
+      runner.closeConnection();
     }
-
-    private static String selectDbScriptFileName(String dbProductName) {
-        return DB.isPostgreSQL(dbProductName)
-            ? DB_SCHEMA_POSTGRES
-            : DB.isH2(dbProductName) ? DB_SCHEMA : DB_SCHEMA_DB2;
+    LOGGER.debug(outWriter.toString());
+    if (!errorWriter.toString().trim().isEmpty()) {
+      LOGGER.error(errorWriter.toString());
     }
+  }
 
-    private static String selectDbSchemaDetectionScript(String dbProductName) {
-        return DB.isPostgreSQL(dbProductName) ? DB_SCHEMA_DETECTION_POSTGRES : DB_SCHEMA_DETECTION;
-    }
+  public boolean isValidSchemaVersion(String expectedVersion) {
+    SqlRunner runner = null;
+    try {
+      Connection connection = dataSource.getConnection();
+      connection.setSchema(this.schemaName);
+      runner = new SqlRunner(connection);
+      LOGGER.debug(connection.getMetaData().toString());
 
-    /**
-     * Run all db scripts.
-     *
-     * @throws SQLException
-     *             will be thrown if there will be some incorrect SQL statements invoked.
-     */
-    public void run() throws SQLException {
-        Connection connection = dataSource.getConnection();
-        LOGGER.debug("Using database of type {} with url '{}'", connection.getMetaData().getDatabaseProductName(),
-            connection.getMetaData().getURL());
-        ScriptRunner runner = getScriptRunnerInstance(connection);
-        try {
-            if (!isSchemaPreexisting(connection)) {
-                String scriptPath = selectDbScriptFileName(connection.getMetaData().getDatabaseProductName());
-                InputStream resourceAsStream = this.getClass().getResourceAsStream(scriptPath);
-                BufferedReader reader = new BufferedReader(
-                    new InputStreamReader(resourceAsStream, StandardCharsets.UTF_8));
-                runner.runScript(getSqlSchemaNameParsed(reader));
-            }
-        } finally {
-            runner.closeConnection();
-        }
-        LOGGER.debug(outWriter.toString());
-        if (!errorWriter.toString().trim().isEmpty()) {
-            LOGGER.error(errorWriter.toString());
-        }
-    }
+      String query =
+          "select VERSION from TASKANA_SCHEMA_VERSION where "
+              + "VERSION = (select max(VERSION) from TASKANA_SCHEMA_VERSION) "
+              + "AND VERSION = ?";
 
-    private ScriptRunner getScriptRunnerInstance(Connection connection) {
-        ScriptRunner runner = new ScriptRunner(connection);
-        runner.setStopOnError(true);
-        runner.setLogWriter(logWriter);
-        runner.setErrorLogWriter(errorLogWriter);
-        return runner;
-    }
-
-    private boolean isSchemaPreexisting(Connection connection) {
-        ScriptRunner runner = getScriptRunnerInstance(connection);
-        StringWriter errorWriter = new StringWriter();
-        runner.setErrorLogWriter(new PrintWriter(errorWriter));
-        try {
-            String scriptPath = selectDbSchemaDetectionScript(connection.getMetaData().getDatabaseProductName());
-            InputStream resourceAsStream = this.getClass().getResourceAsStream(scriptPath);
-            BufferedReader reader = new BufferedReader(new InputStreamReader(resourceAsStream, StandardCharsets.UTF_8));
-            runner.runScript(getSqlSchemaNameParsed(reader));
-        } catch (Exception e) {
-            LOGGER.debug("Schema does not exist.");
-            if (!errorWriter.toString().trim().isEmpty()) {
-                LOGGER.debug(errorWriter.toString());
-            }
-            return false;
-        }
-        LOGGER.debug("Schema does exist.");
+      Map<String, Object> queryResult = runner.selectOne(query, expectedVersion);
+      if (queryResult == null || queryResult.isEmpty()) {
+        LOGGER.error(
+            "Schema version not valid. The VERSION property in table TASKANA_SCHEMA_VERSION has not the expected value {}",
+            expectedVersion);
+        return false;
+      } else {
+        LOGGER.debug("Schema version is valid.");
         return true;
+      }
+
+    } catch (Exception e) {
+      LOGGER.error(
+          "Schema version not valid. The VERSION property in table TASKANA_SCHEMA_VERSION has not the expected value {}",
+          expectedVersion);
+      return false;
+    } finally {
+      if (runner != null) {
+        runner.closeConnection();
+      }
     }
+  }
 
-    public boolean isValidSchemaVersion(String expectedVersion) {
-        SqlRunner runner = null;
-        try {
-            Connection connection = dataSource.getConnection();
-            connection.setSchema(this.schemaName);
-            runner = new SqlRunner(connection);
-            LOGGER.debug(connection.getMetaData().toString());
+  public DataSource getDataSource() {
+    return dataSource;
+  }
 
-            String query = "select VERSION from TASKANA_SCHEMA_VERSION where "
-                + "VERSION = (select max(VERSION) from TASKANA_SCHEMA_VERSION) "
-                + "AND VERSION = ?";
+  public void setDataSource(DataSource dataSource) {
+    this.dataSource = dataSource;
+  }
 
-            Map<String, Object> queryResult = runner.selectOne(query, expectedVersion);
-            if (queryResult == null || queryResult.isEmpty()) {
-                LOGGER.error(
-                    "Schema version not valid. The VERSION property in table TASKANA_SCHEMA_VERSION has not the expected value {}",
-                    expectedVersion);
-                return false;
-            } else {
-                LOGGER.debug("Schema version is valid.");
-                return true;
-            }
+  private static String selectDbScriptFileName(String dbProductName) {
+    return DB.isPostgreSQL(dbProductName)
+        ? DB_SCHEMA_POSTGRES
+        : DB.isH2(dbProductName) ? DB_SCHEMA : DB_SCHEMA_DB2;
+  }
 
-        } catch (Exception e) {
-            LOGGER.error(
-                "Schema version not valid. The VERSION property in table TASKANA_SCHEMA_VERSION has not the expected value {}",
-                expectedVersion);
-            return false;
-        } finally {
-            if (runner != null) {
-                runner.closeConnection();
-            }
+  private static String selectDbSchemaDetectionScript(String dbProductName) {
+    return DB.isPostgreSQL(dbProductName) ? DB_SCHEMA_DETECTION_POSTGRES : DB_SCHEMA_DETECTION;
+  }
+
+  private ScriptRunner getScriptRunnerInstance(Connection connection) {
+    ScriptRunner runner = new ScriptRunner(connection);
+    runner.setStopOnError(true);
+    runner.setLogWriter(logWriter);
+    runner.setErrorLogWriter(errorLogWriter);
+    return runner;
+  }
+
+  private boolean isSchemaPreexisting(Connection connection) {
+    ScriptRunner runner = getScriptRunnerInstance(connection);
+    StringWriter errorWriter = new StringWriter();
+    runner.setErrorLogWriter(new PrintWriter(errorWriter));
+    try {
+      String scriptPath =
+          selectDbSchemaDetectionScript(connection.getMetaData().getDatabaseProductName());
+      InputStream resourceAsStream = this.getClass().getResourceAsStream(scriptPath);
+      BufferedReader reader =
+          new BufferedReader(new InputStreamReader(resourceAsStream, StandardCharsets.UTF_8));
+      runner.runScript(getSqlSchemaNameParsed(reader));
+    } catch (Exception e) {
+      LOGGER.debug("Schema does not exist.");
+      if (!errorWriter.toString().trim().isEmpty()) {
+        LOGGER.debug(errorWriter.toString());
+      }
+      return false;
+    }
+    LOGGER.debug("Schema does exist.");
+    return true;
+  }
+
+  private StringReader getSqlSchemaNameParsed(BufferedReader reader) {
+
+    StringBuffer content = new StringBuffer();
+    try {
+      String line = "";
+      while (line != null) {
+        line = reader.readLine();
+        if (line != null) {
+          content.append(line.replaceAll("%schemaName%", schemaName) + System.lineSeparator());
         }
+      }
+    } catch (IOException e) {
+      LOGGER.error("SchemaName sql parsing failed for schemaName {}", schemaName, e);
     }
-
-    public DataSource getDataSource() {
-        return dataSource;
-    }
-
-    public void setDataSource(DataSource dataSource) {
-        this.dataSource = dataSource;
-    }
-
-    private StringReader getSqlSchemaNameParsed(BufferedReader reader) {
-
-        StringBuffer content = new StringBuffer();
-        try {
-            String line = "";
-            while (line != null) {
-                line = reader.readLine();
-                if (line != null) {
-                    content.append(line.replaceAll("%schemaName%", schemaName) + System.lineSeparator());
-                }
-            }
-        } catch (IOException e) {
-            LOGGER.error("SchemaName sql parsing failed for schemaName {}", schemaName, e);
-        }
-        return new StringReader(content.toString());
-    }
+    return new StringReader(content.toString());
+  }
 }

lib/taskana-core/src/main/java/pro/taskana/configuration/TaskanaEngineConfiguration.java

@@ -22,9 +22,7 @@ import java.util.Properties;
 import java.util.Set;
 import java.util.StringTokenizer;
 import java.util.stream.Collectors;
-
 import javax.sql.DataSource;
-
 import org.apache.ibatis.datasource.pooled.PooledDataSource;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
@@ -36,492 +34,521 @@ import pro.taskana.impl.TaskanaEngineImpl;
 import pro.taskana.impl.util.LoggerUtils;
 
 /**
- * This central class creates the TaskanaEngine and holds all the information about DB and Security.<br>
+ * This central class creates the TaskanaEngine and holds all the information about DB and Security.
+ * <br>
  * Security is enabled by default.
  */
 public class TaskanaEngineConfiguration {
 
-    private static final Logger LOGGER = LoggerFactory.getLogger(TaskanaEngineConfiguration.class);
+  protected static final String TASKANA_SCHEMA_VERSION =
+      "1.1.5"; // must match the VERSION value in table
+  private static final Logger LOGGER = LoggerFactory.getLogger(TaskanaEngineConfiguration.class);
+  private static final String USER_NAME = "sa";
+  private static final String USER_PASSWORD = "sa";
+  private static final String JDBC_H2_MEM_TASKANA =
+      "jdbc:h2:mem:taskana;IGNORECASE=TRUE;LOCK_MODE=0";
+  private static final String H2_DRIVER = "org.h2.Driver";
+  private static final String TASKANA_PROPERTIES = "/taskana.properties";
+  private static final String TASKANA_ROLES_SEPARATOR = "|";
+  private static final String TASKANA_JOB_BATCHSIZE = "taskana.jobs.batchSize";
+  private static final String TASKANA_JOB_RETRIES = "taskana.jobs.maxRetries";
+  private static final String TASKANA_JOB_CLEANUP_RUN_EVERY = "taskana.jobs.cleanup.runEvery";
+  private static final String TASKANA_JOB_CLEANUP_FIRST_RUN = "taskana.jobs.cleanup.firstRunAt";
+  private static final String TASKANA_JOB_CLEANUP_MINIMUM_AGE = "taskana.jobs.cleanup.minimumAge";
+  private static final String TASKANA_JOB_TASK_CLEANUP_ALL_COMPLETED_SAME_PARENTE_BUSINESS =
+      "taskana.jobs.cleanup.allCompletedSameParentBusiness";
+  private static final String TASKANA_DOMAINS_PROPERTY = "taskana.domains";
+  private static final String TASKANA_CLASSIFICATION_TYPES_PROPERTY =
+      "taskana.classification.types";
+  private static final String TASKANA_CLASSIFICATION_CATEGORIES_PROPERTY =
+      "taskana.classification.categories";
+  // TASKANA_SCHEMA_VERSION
+  private static final String DEFAULT_SCHEMA_NAME = "TASKANA";
 
-    private static final String USER_NAME = "sa";
-    private static final String USER_PASSWORD = "sa";
-    private static final String JDBC_H2_MEM_TASKANA = "jdbc:h2:mem:taskana;IGNORECASE=TRUE;LOCK_MODE=0";
-    private static final String H2_DRIVER = "org.h2.Driver";
-    private static final String TASKANA_PROPERTIES = "/taskana.properties";
-    private static final String TASKANA_ROLES_SEPARATOR = "|";
-    private static final String TASKANA_JOB_BATCHSIZE = "taskana.jobs.batchSize";
-    private static final String TASKANA_JOB_RETRIES = "taskana.jobs.maxRetries";
-    private static final String TASKANA_JOB_CLEANUP_RUN_EVERY = "taskana.jobs.cleanup.runEvery";
-    private static final String TASKANA_JOB_CLEANUP_FIRST_RUN = "taskana.jobs.cleanup.firstRunAt";
-    private static final String TASKANA_JOB_CLEANUP_MINIMUM_AGE = "taskana.jobs.cleanup.minimumAge";
-    private static final String TASKANA_JOB_TASK_CLEANUP_ALL_COMPLETED_SAME_PARENTE_BUSINESS = "taskana.jobs.cleanup.allCompletedSameParentBusiness";
+  // Taskana properties file
+  protected String propertiesFileName = TASKANA_PROPERTIES;
 
-    private static final String TASKANA_DOMAINS_PROPERTY = "taskana.domains";
-    private static final String TASKANA_CLASSIFICATION_TYPES_PROPERTY = "taskana.classification.types";
-    private static final String TASKANA_CLASSIFICATION_CATEGORIES_PROPERTY = "taskana.classification.categories";
-    protected static final String TASKANA_SCHEMA_VERSION = "1.1.5"; // must match the VERSION value in table
-    // TASKANA_SCHEMA_VERSION
-    private static final String DEFAULT_SCHEMA_NAME = "TASKANA";
+  // Taskana datasource configuration
+  protected DataSource dataSource;
+  protected DbSchemaCreator dbSchemaCreator;
+  protected String schemaName;
 
-    // Taskana properties file
-    protected String propertiesFileName = TASKANA_PROPERTIES;
+  // Taskana role configuration
+  protected String rolesSeparator = TASKANA_ROLES_SEPARATOR;
+  protected Map<TaskanaRole, Set<String>> roleMap = new HashMap<>();
 
-    // Taskana datasource configuration
-    protected DataSource dataSource;
-    protected DbSchemaCreator dbSchemaCreator;
-    protected String schemaName;
+  // global switch to enable JAAS based authentication and Taskana
+  // authorizations
+  protected boolean securityEnabled = true;
+  protected boolean useManagedTransactions;
+  // List of configured domain names
+  protected List<String> domains = new ArrayList<String>();
+  // List of configured classification types
+  protected List<String> classificationTypes = new ArrayList<String>();
+  protected Map<String, List<String>> classificationCategoriesByTypeMap =
+      new HashMap<String, List<String>>();
+  // Properties for the monitor
+  private boolean germanPublicHolidaysEnabled;
+  private List<LocalDate> customHolidays;
+  // Properties for generalo job execution
+  private int jobBatchSize = 100;
+  private int maxNumberOfJobRetries = 3;
+  // Properties for the cleanup job
+  private Instant cleanupJobFirstRun = Instant.parse("2018-01-01T00:00:00Z");
+  private Duration cleanupJobRunEvery = Duration.parse("P1D");
+  private Duration cleanupJobMinimumAge = Duration.parse("P14D");
+  private boolean taskCleanupJobAllCompletedSameParentBusiness = true;
 
-    // Taskana role configuration
-    protected String rolesSeparator = TASKANA_ROLES_SEPARATOR;
-    protected Map<TaskanaRole, Set<String>> roleMap = new HashMap<>();
+  public TaskanaEngineConfiguration(
+      DataSource dataSource, boolean useManagedTransactions, String schemaName)
+      throws SQLException {
+    this(dataSource, useManagedTransactions, true, schemaName);
+  }
 
-    // global switch to enable JAAS based authentication and Taskana
-    // authorizations
-    protected boolean securityEnabled = true;
-    protected boolean useManagedTransactions;
+  public TaskanaEngineConfiguration(
+      DataSource dataSource,
+      boolean useManagedTransactions,
+      boolean securityEnabled,
+      String schemaName)
+      throws SQLException {
+    this(dataSource, useManagedTransactions, securityEnabled, null, null, schemaName);
+  }
 
-    // Properties for the monitor
-    private boolean germanPublicHolidaysEnabled;
-    private List<LocalDate> customHolidays;
+  public TaskanaEngineConfiguration(
+      DataSource dataSource,
+      boolean useManagedTransactions,
+      boolean securityEnabled,
+      String propertiesFileName,
+      String rolesSeparator,
+      String schemaName)
+      throws SQLException {
+    this.useManagedTransactions = useManagedTransactions;
+    this.securityEnabled = securityEnabled;
 
-    // Properties for generalo job execution
-    private int jobBatchSize = 100;
-    private int maxNumberOfJobRetries = 3;
-
-    // Properties for the cleanup job
-    private Instant cleanupJobFirstRun = Instant.parse("2018-01-01T00:00:00Z");
-    private Duration cleanupJobRunEvery = Duration.parse("P1D");
-    private Duration cleanupJobMinimumAge = Duration.parse("P14D");
-    private boolean taskCleanupJobAllCompletedSameParentBusiness = true;
-
-    // List of configured domain names
-    protected List<String> domains = new ArrayList<String>();
-
-    // List of configured classification types
-    protected List<String> classificationTypes = new ArrayList<String>();
-
-    protected Map<String, List<String>> classificationCategoriesByTypeMap = new HashMap<String, List<String>>();
-
-    public TaskanaEngineConfiguration(DataSource dataSource, boolean useManagedTransactions, String schemaName)
-        throws SQLException {
-        this(dataSource, useManagedTransactions, true, schemaName);
+    if (propertiesFileName != null) {
+      this.propertiesFileName = propertiesFileName;
     }
 
-    public TaskanaEngineConfiguration(DataSource dataSource, boolean useManagedTransactions,
-        boolean securityEnabled, String schemaName) throws SQLException {
-        this(dataSource, useManagedTransactions, securityEnabled, null, null, schemaName);
+    if (rolesSeparator != null) {
+      this.rolesSeparator = rolesSeparator;
     }
 
-    public TaskanaEngineConfiguration(DataSource dataSource, boolean useManagedTransactions,
-        boolean securityEnabled, String propertiesFileName, String rolesSeparator, String schemaName)
-        throws SQLException {
-        this.useManagedTransactions = useManagedTransactions;
-        this.securityEnabled = securityEnabled;
-
-        if (propertiesFileName != null) {
-            this.propertiesFileName = propertiesFileName;
-        }
-
-        if (rolesSeparator != null) {
-            this.rolesSeparator = rolesSeparator;
-        }
-
-        if (dataSource != null) {
-            this.dataSource = dataSource;
-        } else {
-            // use default In Memory datasource
-            this.dataSource = createDefaultDataSource();
-        }
-
-        initSchemaName(schemaName);
-        initTaskanaProperties(this.propertiesFileName, this.rolesSeparator);
-
-        dbSchemaCreator = new DbSchemaCreator(this.dataSource, this.getSchemaName());
-        dbSchemaCreator.run();
-
-        if (!dbSchemaCreator.isValidSchemaVersion(TASKANA_SCHEMA_VERSION)) {
-            throw new SystemException(
-                "The Database Schema Version doesn't match the expected version " + TASKANA_SCHEMA_VERSION);
-        }
-
+    if (dataSource != null) {
+      this.dataSource = dataSource;
+    } else {
+      // use default In Memory datasource
+      this.dataSource = createDefaultDataSource();
     }
 
-    public void initTaskanaProperties(String propertiesFile, String rolesSeparator) {
-        LOGGER.debug("Reading taskana configuration from {} with role separator {}", propertiesFile, rolesSeparator);
-        Properties props = readPropertiesFromFile(propertiesFile);
-        initTaskanaRoles(props, rolesSeparator);
-        initJobParameters(props);
-        initDomains(props);
-        initClassificationTypes(props);
-        initClassificationCategories(props);
+    initSchemaName(schemaName);
+    initTaskanaProperties(this.propertiesFileName, this.rolesSeparator);
+
+    dbSchemaCreator = new DbSchemaCreator(this.dataSource, this.getSchemaName());
+    dbSchemaCreator.run();
+
+    if (!dbSchemaCreator.isValidSchemaVersion(TASKANA_SCHEMA_VERSION)) {
+      throw new SystemException(
+          "The Database Schema Version doesn't match the expected version "
+              + TASKANA_SCHEMA_VERSION);
     }
+  }
 
-    private void initJobParameters(Properties props) {
-        String jobBatchSizeProperty = props.getProperty(TASKANA_JOB_BATCHSIZE);
-        if (jobBatchSizeProperty != null && !jobBatchSizeProperty.isEmpty()) {
-            try {
-                jobBatchSize = Integer.parseInt(jobBatchSizeProperty);
-            } catch (Exception e) {
-                LOGGER.warn("Could not parse jobBatchSizeProperty ({}). Using default. Exception: {} ",
-                    jobBatchSizeProperty, e.getMessage());
-            }
-        }
+  public void initTaskanaProperties(String propertiesFile, String rolesSeparator) {
+    LOGGER.debug(
+        "Reading taskana configuration from {} with role separator {}",
+        propertiesFile,
+        rolesSeparator);
+    Properties props = readPropertiesFromFile(propertiesFile);
+    initTaskanaRoles(props, rolesSeparator);
+    initJobParameters(props);
+    initDomains(props);
+    initClassificationTypes(props);
+    initClassificationCategories(props);
+  }
 
-        String maxNumberOfJobRetriesProperty = props.getProperty(TASKANA_JOB_RETRIES);
-        if (maxNumberOfJobRetriesProperty != null && !maxNumberOfJobRetriesProperty.isEmpty()) {
-            try {
-                maxNumberOfJobRetries = Integer.parseInt(maxNumberOfJobRetriesProperty);
-            } catch (Exception e) {
-                LOGGER.warn("Could not parse maxNumberOfJobRetriesProperty ({}). Using default. Exception: {} ",
-                    maxNumberOfJobRetriesProperty, e.getMessage());
-            }
-        }
-
-        String taskCleanupJobFirstRunProperty = props.getProperty(TASKANA_JOB_CLEANUP_FIRST_RUN);
-        if (taskCleanupJobFirstRunProperty != null && !taskCleanupJobFirstRunProperty.isEmpty()) {
-            try {
-                cleanupJobFirstRun = Instant.parse(taskCleanupJobFirstRunProperty);
-            } catch (Exception e) {
-                LOGGER.warn("Could not parse taskCleanupJobFirstRunProperty ({}). Using default. Exception: {} ",
-                    taskCleanupJobFirstRunProperty, e.getMessage());
-            }
-        }
-
-        String taskCleanupJobRunEveryProperty = props.getProperty(TASKANA_JOB_CLEANUP_RUN_EVERY);
-        if (taskCleanupJobRunEveryProperty != null && !taskCleanupJobRunEveryProperty.isEmpty()) {
-            try {
-                cleanupJobRunEvery = Duration.parse(taskCleanupJobRunEveryProperty);
-            } catch (Exception e) {
-                LOGGER.warn("Could not parse taskCleanupJobRunEveryProperty ({}). Using default. Exception: {} ",
-                    taskCleanupJobRunEveryProperty, e.getMessage());
-            }
-        }
-
-        String taskCleanupJobMinimumAgeProperty = props.getProperty(TASKANA_JOB_CLEANUP_MINIMUM_AGE);
-        if (taskCleanupJobMinimumAgeProperty != null && !taskCleanupJobMinimumAgeProperty.isEmpty()) {
-            try {
-                cleanupJobMinimumAge = Duration.parse(taskCleanupJobMinimumAgeProperty);
-            } catch (Exception e) {
-                LOGGER.warn("Could not parse taskCleanupJobMinimumAgeProperty ({}). Using default. Exception: {} ",
-                    taskCleanupJobMinimumAgeProperty, e.getMessage());
-            }
-        }
-
-        String taskCleanupJobAllCompletedSameParentBusinessProperty = props.getProperty(
-            TASKANA_JOB_TASK_CLEANUP_ALL_COMPLETED_SAME_PARENTE_BUSINESS);
-        if (taskCleanupJobAllCompletedSameParentBusinessProperty != null
-            && !taskCleanupJobAllCompletedSameParentBusinessProperty.isEmpty()) {
-            try {
-                taskCleanupJobAllCompletedSameParentBusiness = Boolean.parseBoolean(
-                    taskCleanupJobAllCompletedSameParentBusinessProperty);
-            } catch (Exception e) {
-                LOGGER.warn(
-                    "Could not parse taskCleanupJobAllCompletedSameParentBusinessProperty ({}). Using default. Exception: {} ",
-                    taskCleanupJobAllCompletedSameParentBusinessProperty, e.getMessage());
-            }
-        }
-
-        LOGGER.debug("Configured number of task and workbasket updates per transaction: {}", jobBatchSize);
-        LOGGER.debug("Number of retries of failed task updates: {}", maxNumberOfJobRetries);
-        LOGGER.debug("CleanupJob configuration: first run at {}", cleanupJobFirstRun);
-        LOGGER.debug("CleanupJob configuration: runs every {}", cleanupJobRunEvery);
-        LOGGER.debug("CleanupJob configuration: minimum age of tasks to be cleanup up is {}",
-            cleanupJobMinimumAge);
-        LOGGER.debug("TaskCleanupJob configuration: all completed task with the same parent business property id {}",
-            taskCleanupJobAllCompletedSameParentBusiness);
-    }
-
-    private void initDomains(Properties props) {
-        String domainNames = props.getProperty(TASKANA_DOMAINS_PROPERTY);
-        if (domainNames != null && !domainNames.isEmpty()) {
-            StringTokenizer st = new StringTokenizer(domainNames, ",");
-            while (st.hasMoreTokens()) {
-                domains.add(st.nextToken().trim().toUpperCase());
-            }
-        }
-        LOGGER.debug("Configured domains: {}", domains);
-    }
-
-    private void initClassificationTypes(Properties props) {
-        String classificationTypesNames = props.getProperty(TASKANA_CLASSIFICATION_TYPES_PROPERTY);
-        if (classificationTypesNames != null && !classificationTypesNames.isEmpty()) {
-            StringTokenizer st = new StringTokenizer(classificationTypesNames, ",");
-            while (st.hasMoreTokens()) {
-                classificationTypes.add(st.nextToken().trim().toUpperCase());
-            }
-        } else {
-            LOGGER.warn("Configuration issue. Classification type is missing");
-        }
-        LOGGER.debug("Configured classificationTypes: {}", classificationTypes);
-    }
-
-    private void initClassificationCategories(Properties props) {
-        if (classificationTypes != null && !classificationTypes.isEmpty()) {
-            String classificationCategoryNames;
-            StringTokenizer st;
-            List<String> classificationCategoriesAux;
-            for (String type : classificationTypes) {
-                classificationCategoriesAux = new ArrayList<>();
-                classificationCategoryNames = props.getProperty(
-                    TASKANA_CLASSIFICATION_CATEGORIES_PROPERTY + "." + type.toLowerCase());
-                if (classificationCategoryNames != null && !classificationCategoryNames.isEmpty()) {
-                    st = new StringTokenizer(classificationCategoryNames, ",");
-                    while (st.hasMoreTokens()) {
-                        classificationCategoriesAux.add(st.nextToken().trim().toUpperCase());
-                    }
-                    classificationCategoriesByTypeMap.put(type, classificationCategoriesAux);
-                } else {
-                    LOGGER.warn("Configuration issue. Classification categories by type is missing");
-                }
-            }
-        }
-        LOGGER.debug("Configured classification categories : {}", domains);
-    }
-
-    private void initSchemaName(String schemaName) {
-        if (schemaName != null && !schemaName.isEmpty()) {
-            this.setSchemaName(schemaName);
-        } else {
-            this.setSchemaName(DEFAULT_SCHEMA_NAME);
-        }
-
-        try (Connection connection = dataSource.getConnection()) {
-            String databaseProductName = connection.getMetaData().getDatabaseProductName();
-            if (DB.isPostgreSQL(databaseProductName)) {
-                this.schemaName = this.schemaName.toLowerCase();
-            } else {
-                this.schemaName = this.schemaName.toUpperCase();
-            }
-        } catch (SQLException ex) {
-            LOGGER.error("Caught {} when attempting to initialize the schema name", ex);
-        }
-
-        LOGGER.debug("Using schema name {}", this.getSchemaName());
-    }
-
-    private void initTaskanaRoles(Properties props, String rolesSeparator) {
-        List<String> validPropertyNames = TaskanaRole.getValidPropertyNames();
-
-        props.keySet()
-            .stream()
-            .map(String::valueOf)
-            .filter(propertyName -> validPropertyNames.contains(propertyName.toLowerCase().trim()))
-            .forEach(validPropertyName -> roleMap.put(TaskanaRole.fromPropertyName(validPropertyName),
-                getTokensWithCollection(props.getProperty(validPropertyName), rolesSeparator)));
-
-        ensureRoleMapIsFullyInitialized();
-
-        if (LOGGER.isDebugEnabled()) {
-            roleMap.forEach(
-                (k, v) -> LOGGER.debug("Found Taskana RoleConfig {} : {} ", k, LoggerUtils.setToString(v)));
-        }
-    }
-
-    private HashSet<String> getTokensWithCollection(String str, String rolesSeparator) {
-        return Collections.list(new StringTokenizer(str, rolesSeparator)).stream()
-            .map(token -> String.valueOf(token).toLowerCase().trim())
-            .collect(Collectors.toCollection(HashSet::new));
-    }
-
-    private Properties readPropertiesFromFile(String propertiesFile) {
-        Properties props = new Properties();
-        boolean loadFromClasspath = loadFromClasspath(propertiesFile);
-        try {
-            if (loadFromClasspath) {
-                InputStream inputStream = this.getClass().getResourceAsStream(propertiesFile);
-                if (inputStream == null) {
-                    LOGGER.error("taskana properties file {} was not found on classpath.",
-                        propertiesFile);
-                } else {
-                    props.load(new InputStreamReader(inputStream, StandardCharsets.UTF_8));
-                    LOGGER.debug("Role properties were loaded from file {} from classpath.", propertiesFile);
-                }
-            } else {
-                props.load(new FileInputStream(propertiesFile));
-                LOGGER.debug("Role properties were loaded from file {}.", propertiesFile);
-            }
-        } catch (IOException e) {
-            LOGGER.error("caught IOException when processing properties file {}.", propertiesFile);
-            throw new SystemException("internal System error when processing properties file " + propertiesFile,
-                e.getCause());
-        }
-        return props;
-    }
-
-    private boolean loadFromClasspath(String propertiesFile) {
-        boolean loadFromClasspath = true;
-        File f = new File(propertiesFile);
-        if (f.exists() && !f.isDirectory()) {
-            loadFromClasspath = false;
-        }
-        return loadFromClasspath;
-    }
-
-    private void ensureRoleMapIsFullyInitialized() {
-        // make sure that roleMap does not return null for any role
-        Arrays.stream(TaskanaRole.values())
-            .forEach(role -> roleMap.putIfAbsent(role, new HashSet<>()));
-    }
-
-    public static DataSource createDefaultDataSource() {
-        LOGGER.info("No datasource is provided. A inmemory db is used: "
+  public static DataSource createDefaultDataSource() {
+    LOGGER.info(
+        "No datasource is provided. A inmemory db is used: "
             + "'org.h2.Driver', 'jdbc:h2:mem:taskana;IGNORECASE=TRUE;LOCK_MODE=0', 'sa', 'sa'");
-        return createDatasource(H2_DRIVER, JDBC_H2_MEM_TASKANA, USER_NAME, USER_PASSWORD);
+    return createDatasource(H2_DRIVER, JDBC_H2_MEM_TASKANA, USER_NAME, USER_PASSWORD);
+  }
+
+  /**
+   * This method creates the TaskanaEngine without an sqlSessionFactory.
+   *
+   * @return the TaskanaEngine
+   */
+  public TaskanaEngine buildTaskanaEngine() {
+    return TaskanaEngineImpl.createTaskanaEngine(this);
+  }
+
+  /**
+   * This method creates a PooledDataSource, if the needed properties are provided.
+   *
+   * @param driver the name of the jdbc driver
+   * @param jdbcUrl the url to which the jdbc driver connects
+   * @param username the user name for database access
+   * @param password the password for database access
+   * @return DataSource
+   */
+  public static DataSource createDatasource(
+      String driver, String jdbcUrl, String username, String password) {
+    return new PooledDataSource(driver, jdbcUrl, username, password);
+  }
+
+  public boolean isSecurityEnabled() {
+    return this.securityEnabled;
+  }
+
+  public DataSource getDatasource() {
+    return this.dataSource;
+  }
+
+  public boolean getUseManagedTransactions() {
+    return this.useManagedTransactions;
+  }
+
+  public String getPropertiesFileName() {
+    return this.propertiesFileName;
+  }
+
+  public void setPropertiesFileName(String propertiesFileName) {
+    this.propertiesFileName = propertiesFileName;
+  }
+
+  public int getMaxNumberOfUpdatesPerTransaction() {
+    return jobBatchSize;
+  }
+
+  public int getMaxNumberOfJobRetries() {
+    return maxNumberOfJobRetries;
+  }
+
+  public String getPropertiesSeparator() {
+    return this.rolesSeparator;
+  }
+
+  public void setPropertiesSeparator(String propertiesSeparator) {
+    this.rolesSeparator = propertiesSeparator;
+  }
+
+  public boolean isGermanPublicHolidaysEnabled() {
+    return this.germanPublicHolidaysEnabled;
+  }
+
+  public void setGermanPublicHolidaysEnabled(boolean germanPublicHolidaysEnabled) {
+    this.germanPublicHolidaysEnabled = germanPublicHolidaysEnabled;
+  }
+
+  public List<LocalDate> getCustomHolidays() {
+    return customHolidays;
+  }
+
+  public void setCustomHolidays(List<LocalDate> customHolidays) {
+    this.customHolidays = customHolidays;
+  }
+
+  public Map<TaskanaRole, Set<String>> getRoleMap() {
+    return roleMap;
+  }
+
+  public void setRoleMap(Map<TaskanaRole, Set<String>> roleMap) {
+    this.roleMap = roleMap;
+  }
+
+  public List<String> getDomains() {
+    return domains;
+  }
+
+  public void setDomains(List<String> domains) {
+    this.domains = domains;
+  }
+
+  public List<String> getClassificationTypes() {
+    return classificationTypes;
+  }
+
+  public void setClassificationTypes(List<String> classificationTypes) {
+    this.classificationTypes = classificationTypes;
+  }
+
+  public List<String> getAllClassificationCategories() {
+    List<String> classificationCategories = new ArrayList<>();
+    for (Map.Entry<String, List<String>> type : this.classificationCategoriesByTypeMap.entrySet()) {
+      classificationCategories.addAll(type.getValue());
+    }
+    return classificationCategories;
+  }
+
+  public List<String> getClassificationCategoriesByType(String type) {
+    return classificationCategoriesByTypeMap.get(type);
+  }
+
+  public void setClassificationCategoriesByType(
+      Map<String, List<String>> classificationCategoriesByType) {
+    this.classificationCategoriesByTypeMap = classificationCategoriesByType;
+  }
+
+  public Instant getCleanupJobFirstRun() {
+    return cleanupJobFirstRun;
+  }
+
+  public Duration getCleanupJobRunEvery() {
+    return cleanupJobRunEvery;
+  }
+
+  public Duration getCleanupJobMinimumAge() {
+    return cleanupJobMinimumAge;
+  }
+
+  public boolean isTaskCleanupJobAllCompletedSameParentBusiness() {
+    return taskCleanupJobAllCompletedSameParentBusiness;
+  }
+
+  public void setTaskCleanupJobAllCompletedSameParentBusiness(
+      boolean taskCleanupJobAllCompletedSameParentBusiness) {
+    this.taskCleanupJobAllCompletedSameParentBusiness =
+        taskCleanupJobAllCompletedSameParentBusiness;
+  }
+
+  public String getSchemaName() {
+    return schemaName;
+  }
+
+  public void setSchemaName(String schemaName) {
+    this.schemaName = schemaName;
+  }
+
+  /**
+   * Helper method to determine whether all access ids (user Id and group ids) should be used in
+   * lower case.
+   *
+   * @return true if all access ids should be used in lower case, false otherwise
+   */
+  public static boolean shouldUseLowerCaseForAccessIds() {
+    return true;
+  }
+
+  private void initJobParameters(Properties props) {
+    String jobBatchSizeProperty = props.getProperty(TASKANA_JOB_BATCHSIZE);
+    if (jobBatchSizeProperty != null && !jobBatchSizeProperty.isEmpty()) {
+      try {
+        jobBatchSize = Integer.parseInt(jobBatchSizeProperty);
+      } catch (Exception e) {
+        LOGGER.warn(
+            "Could not parse jobBatchSizeProperty ({}). Using default. Exception: {} ",
+            jobBatchSizeProperty,
+            e.getMessage());
+      }
     }
 
-    /**
-     * This method creates the TaskanaEngine without an sqlSessionFactory.
-     *
-     * @return the TaskanaEngine
-     */
-    public TaskanaEngine buildTaskanaEngine() {
-        return TaskanaEngineImpl.createTaskanaEngine(this);
+    String maxNumberOfJobRetriesProperty = props.getProperty(TASKANA_JOB_RETRIES);
+    if (maxNumberOfJobRetriesProperty != null && !maxNumberOfJobRetriesProperty.isEmpty()) {
+      try {
+        maxNumberOfJobRetries = Integer.parseInt(maxNumberOfJobRetriesProperty);
+      } catch (Exception e) {
+        LOGGER.warn(
+            "Could not parse maxNumberOfJobRetriesProperty ({}). Using default. Exception: {} ",
+            maxNumberOfJobRetriesProperty,
+            e.getMessage());
+      }
     }
 
-    /**
-     * This method creates a PooledDataSource, if the needed properties are provided.
-     *
-     * @param driver
-     *            the name of the jdbc driver
-     * @param jdbcUrl
-     *            the url to which the jdbc driver connects
-     * @param username
-     *            the user name for database access
-     * @param password
-     *            the password for database access
-     * @return DataSource
-     */
-    public static DataSource createDatasource(String driver, String jdbcUrl, String username, String password) {
-        return new PooledDataSource(driver, jdbcUrl, username, password);
+    String taskCleanupJobFirstRunProperty = props.getProperty(TASKANA_JOB_CLEANUP_FIRST_RUN);
+    if (taskCleanupJobFirstRunProperty != null && !taskCleanupJobFirstRunProperty.isEmpty()) {
+      try {
+        cleanupJobFirstRun = Instant.parse(taskCleanupJobFirstRunProperty);
+      } catch (Exception e) {
+        LOGGER.warn(
+            "Could not parse taskCleanupJobFirstRunProperty ({}). Using default. Exception: {} ",
+            taskCleanupJobFirstRunProperty,
+            e.getMessage());
+      }
     }
 
-    public boolean isSecurityEnabled() {
-        return this.securityEnabled;
+    String taskCleanupJobRunEveryProperty = props.getProperty(TASKANA_JOB_CLEANUP_RUN_EVERY);
+    if (taskCleanupJobRunEveryProperty != null && !taskCleanupJobRunEveryProperty.isEmpty()) {
+      try {
+        cleanupJobRunEvery = Duration.parse(taskCleanupJobRunEveryProperty);
+      } catch (Exception e) {
+        LOGGER.warn(
+            "Could not parse taskCleanupJobRunEveryProperty ({}). Using default. Exception: {} ",
+            taskCleanupJobRunEveryProperty,
+            e.getMessage());
+      }
     }
 
-    public DataSource getDatasource() {
-        return this.dataSource;
+    String taskCleanupJobMinimumAgeProperty = props.getProperty(TASKANA_JOB_CLEANUP_MINIMUM_AGE);
+    if (taskCleanupJobMinimumAgeProperty != null && !taskCleanupJobMinimumAgeProperty.isEmpty()) {
+      try {
+        cleanupJobMinimumAge = Duration.parse(taskCleanupJobMinimumAgeProperty);
+      } catch (Exception e) {
+        LOGGER.warn(
+            "Could not parse taskCleanupJobMinimumAgeProperty ({}). Using default. Exception: {} ",
+            taskCleanupJobMinimumAgeProperty,
+            e.getMessage());
+      }
     }
 
-    public boolean getUseManagedTransactions() {
-        return this.useManagedTransactions;
+    String taskCleanupJobAllCompletedSameParentBusinessProperty =
+        props.getProperty(TASKANA_JOB_TASK_CLEANUP_ALL_COMPLETED_SAME_PARENTE_BUSINESS);
+    if (taskCleanupJobAllCompletedSameParentBusinessProperty != null
+        && !taskCleanupJobAllCompletedSameParentBusinessProperty.isEmpty()) {
+      try {
+        taskCleanupJobAllCompletedSameParentBusiness =
+            Boolean.parseBoolean(taskCleanupJobAllCompletedSameParentBusinessProperty);
+      } catch (Exception e) {
+        LOGGER.warn(
+            "Could not parse taskCleanupJobAllCompletedSameParentBusinessProperty ({}). Using default. Exception: {} ",
+            taskCleanupJobAllCompletedSameParentBusinessProperty,
+            e.getMessage());
+      }
     }
 
-    public String getPropertiesFileName() {
-        return this.propertiesFileName;
-    }
+    LOGGER.debug(
+        "Configured number of task and workbasket updates per transaction: {}", jobBatchSize);
+    LOGGER.debug("Number of retries of failed task updates: {}", maxNumberOfJobRetries);
+    LOGGER.debug("CleanupJob configuration: first run at {}", cleanupJobFirstRun);
+    LOGGER.debug("CleanupJob configuration: runs every {}", cleanupJobRunEvery);
+    LOGGER.debug(
+        "CleanupJob configuration: minimum age of tasks to be cleanup up is {}",
+        cleanupJobMinimumAge);
+    LOGGER.debug(
+        "TaskCleanupJob configuration: all completed task with the same parent business property id {}",
+        taskCleanupJobAllCompletedSameParentBusiness);
+  }
 
-    public int getMaxNumberOfUpdatesPerTransaction() {
-        return jobBatchSize;
+  private void initDomains(Properties props) {
+    String domainNames = props.getProperty(TASKANA_DOMAINS_PROPERTY);
+    if (domainNames != null && !domainNames.isEmpty()) {
+      StringTokenizer st = new StringTokenizer(domainNames, ",");
+      while (st.hasMoreTokens()) {
+        domains.add(st.nextToken().trim().toUpperCase());
+      }
     }
+    LOGGER.debug("Configured domains: {}", domains);
+  }
 
-    public int getMaxNumberOfJobRetries() {
-        return maxNumberOfJobRetries;
+  private void initClassificationTypes(Properties props) {
+    String classificationTypesNames = props.getProperty(TASKANA_CLASSIFICATION_TYPES_PROPERTY);
+    if (classificationTypesNames != null && !classificationTypesNames.isEmpty()) {
+      StringTokenizer st = new StringTokenizer(classificationTypesNames, ",");
+      while (st.hasMoreTokens()) {
+        classificationTypes.add(st.nextToken().trim().toUpperCase());
+      }
+    } else {
+      LOGGER.warn("Configuration issue. Classification type is missing");
     }
+    LOGGER.debug("Configured classificationTypes: {}", classificationTypes);
+  }
 
-    public void setPropertiesFileName(String propertiesFileName) {
-        this.propertiesFileName = propertiesFileName;
-    }
-
-    public String getPropertiesSeparator() {
-        return this.rolesSeparator;
-    }
-
-    public void setPropertiesSeparator(String propertiesSeparator) {
-        this.rolesSeparator = propertiesSeparator;
-    }
-
-    public boolean isGermanPublicHolidaysEnabled() {
-        return this.germanPublicHolidaysEnabled;
-    }
-
-    public void setGermanPublicHolidaysEnabled(boolean germanPublicHolidaysEnabled) {
-        this.germanPublicHolidaysEnabled = germanPublicHolidaysEnabled;
-    }
-
-    public List<LocalDate> getCustomHolidays() {
-        return customHolidays;
-    }
-
-    public void setCustomHolidays(List<LocalDate> customHolidays) {
-        this.customHolidays = customHolidays;
-    }
-
-    public Map<TaskanaRole, Set<String>> getRoleMap() {
-        return roleMap;
-    }
-
-    public void setRoleMap(Map<TaskanaRole, Set<String>> roleMap) {
-        this.roleMap = roleMap;
-    }
-
-    public List<String> getDomains() {
-        return domains;
-    }
-
-    public void setDomains(List<String> domains) {
-        this.domains = domains;
-    }
-
-    public List<String> getClassificationTypes() {
-        return classificationTypes;
-    }
-
-    public void setClassificationTypes(List<String> classificationTypes) {
-        this.classificationTypes = classificationTypes;
-    }
-
-    public List<String> getAllClassificationCategories() {
-        List<String> classificationCategories = new ArrayList<>();
-        for (Map.Entry<String, List<String>> type : this.classificationCategoriesByTypeMap.entrySet()) {
-            classificationCategories.addAll(type.getValue());
+  private void initClassificationCategories(Properties props) {
+    if (classificationTypes != null && !classificationTypes.isEmpty()) {
+      String classificationCategoryNames;
+      StringTokenizer st;
+      List<String> classificationCategoriesAux;
+      for (String type : classificationTypes) {
+        classificationCategoriesAux = new ArrayList<>();
+        classificationCategoryNames =
+            props.getProperty(
+                TASKANA_CLASSIFICATION_CATEGORIES_PROPERTY + "." + type.toLowerCase());
+        if (classificationCategoryNames != null && !classificationCategoryNames.isEmpty()) {
+          st = new StringTokenizer(classificationCategoryNames, ",");
+          while (st.hasMoreTokens()) {
+            classificationCategoriesAux.add(st.nextToken().trim().toUpperCase());
+          }
+          classificationCategoriesByTypeMap.put(type, classificationCategoriesAux);
+        } else {
+          LOGGER.warn("Configuration issue. Classification categories by type is missing");
         }
-        return classificationCategories;
+      }
+    }
+    LOGGER.debug("Configured classification categories : {}", domains);
+  }
+
+  private void initSchemaName(String schemaName) {
+    if (schemaName != null && !schemaName.isEmpty()) {
+      this.setSchemaName(schemaName);
+    } else {
+      this.setSchemaName(DEFAULT_SCHEMA_NAME);
     }
 
-    public List<String> getClassificationCategoriesByType(String type) {
-        return classificationCategoriesByTypeMap.get(type);
+    try (Connection connection = dataSource.getConnection()) {
+      String databaseProductName = connection.getMetaData().getDatabaseProductName();
+      if (DB.isPostgreSQL(databaseProductName)) {
+        this.schemaName = this.schemaName.toLowerCase();
+      } else {
+        this.schemaName = this.schemaName.toUpperCase();
+      }
+    } catch (SQLException ex) {
+      LOGGER.error("Caught {} when attempting to initialize the schema name", ex);
     }
 
-    public void setClassificationCategoriesByType(Map<String, List<String>> classificationCategoriesByType) {
-        this.classificationCategoriesByTypeMap = classificationCategoriesByType;
-    }
+    LOGGER.debug("Using schema name {}", this.getSchemaName());
+  }
 
-    public Instant getCleanupJobFirstRun() {
-        return cleanupJobFirstRun;
-    }
+  private void initTaskanaRoles(Properties props, String rolesSeparator) {
+    List<String> validPropertyNames = TaskanaRole.getValidPropertyNames();
 
-    public Duration getCleanupJobRunEvery() {
-        return cleanupJobRunEvery;
-    }
+    props.keySet().stream()
+        .map(String::valueOf)
+        .filter(propertyName -> validPropertyNames.contains(propertyName.toLowerCase().trim()))
+        .forEach(
+            validPropertyName ->
+                roleMap.put(
+                    TaskanaRole.fromPropertyName(validPropertyName),
+                    getTokensWithCollection(props.getProperty(validPropertyName), rolesSeparator)));
 
-    public Duration getCleanupJobMinimumAge() {
-        return cleanupJobMinimumAge;
-    }
+    ensureRoleMapIsFullyInitialized();
 
-    public void setTaskCleanupJobAllCompletedSameParentBusiness(boolean taskCleanupJobAllCompletedSameParentBusiness) {
-        this.taskCleanupJobAllCompletedSameParentBusiness = taskCleanupJobAllCompletedSameParentBusiness;
+    if (LOGGER.isDebugEnabled()) {
+      roleMap.forEach(
+          (k, v) ->
+              LOGGER.debug("Found Taskana RoleConfig {} : {} ", k, LoggerUtils.setToString(v)));
     }
+  }
 
-    public boolean isTaskCleanupJobAllCompletedSameParentBusiness() {
-        return taskCleanupJobAllCompletedSameParentBusiness;
+  private HashSet<String> getTokensWithCollection(String str, String rolesSeparator) {
+    return Collections.list(new StringTokenizer(str, rolesSeparator)).stream()
+        .map(token -> String.valueOf(token).toLowerCase().trim())
+        .collect(Collectors.toCollection(HashSet::new));
+  }
+
+  private Properties readPropertiesFromFile(String propertiesFile) {
+    Properties props = new Properties();
+    boolean loadFromClasspath = loadFromClasspath(propertiesFile);
+    try {
+      if (loadFromClasspath) {
+        InputStream inputStream = this.getClass().getResourceAsStream(propertiesFile);
+        if (inputStream == null) {
+          LOGGER.error("taskana properties file {} was not found on classpath.", propertiesFile);
+        } else {
+          props.load(new InputStreamReader(inputStream, StandardCharsets.UTF_8));
+          LOGGER.debug("Role properties were loaded from file {} from classpath.", propertiesFile);
+        }
+      } else {
+        props.load(new FileInputStream(propertiesFile));
+        LOGGER.debug("Role properties were loaded from file {}.", propertiesFile);
+      }
+    } catch (IOException e) {
+      LOGGER.error("caught IOException when processing properties file {}.", propertiesFile);
+      throw new SystemException(
+          "internal System error when processing properties file " + propertiesFile, e.getCause());
     }
+    return props;
+  }
 
-    public String getSchemaName() {
-        return schemaName;
-    }
-
-    public void setSchemaName(String schemaName) {
-        this.schemaName = schemaName;
-    }
-
-    /**
-     * Helper method to determine whether all access ids (user Id and group ids) should be used in lower case.
-     *
-     * @return true if all access ids should be used in lower case, false otherwise
-     */
-    public static boolean shouldUseLowerCaseForAccessIds() {
-        return true;
+  private boolean loadFromClasspath(String propertiesFile) {
+    boolean loadFromClasspath = true;
+    File f = new File(propertiesFile);
+    if (f.exists() && !f.isDirectory()) {
+      loadFromClasspath = false;
     }
+    return loadFromClasspath;
+  }
 
+  private void ensureRoleMapIsFullyInitialized() {
+    // make sure that roleMap does not return null for any role
+    Arrays.stream(TaskanaRole.values()).forEach(role -> roleMap.putIfAbsent(role, new HashSet<>()));
+  }
 }

lib/taskana-core/src/main/java/pro/taskana/exceptions/AttachmentPersistenceException.java

@@ -2,14 +2,14 @@ package pro.taskana.exceptions;
 
 /**
  * Thrown, when an attachment should be inserted to the DB, but it does already exist.<br>
- * This may happen when a not persisted attachment with ID will be added twice on a task. This can´t be happen it the
- * correct Task-Methods will be used instead the List ones.
+ * This may happen when a not persisted attachment with ID will be added twice on a task. This can´t
+ * be happen it the correct Task-Methods will be used instead the List ones.
  */
 public class AttachmentPersistenceException extends TaskanaException {
 
-    private static final long serialVersionUID = 123L;
+  private static final long serialVersionUID = 123L;
 
-    public AttachmentPersistenceException(String msg, Throwable cause) {
-        super(msg, cause);
-    }
+  public AttachmentPersistenceException(String msg, Throwable cause) {
+    super(msg, cause);
+  }
 }

lib/taskana-core/src/main/java/pro/taskana/exceptions/AutocommitFailedException.java

@@ -1,12 +1,10 @@
 package pro.taskana.exceptions;
 
-/**
- * Thrown in ConnectionManagementMode AUTOCOMMIT when an attempt to commit fails.
- *
- */
+/** Thrown in ConnectionManagementMode AUTOCOMMIT when an attempt to commit fails. */
 public class AutocommitFailedException extends TaskanaRuntimeException {
-    public AutocommitFailedException(Throwable cause) {
-        super("Autocommit failed", cause);
-    }
-    private static final long serialVersionUID = 1L;
+  private static final long serialVersionUID = 1L;
+
+  public AutocommitFailedException(Throwable cause) {
+    super("Autocommit failed", cause);
+  }
 }

lib/taskana-core/src/main/java/pro/taskana/exceptions/ClassificationAlreadyExistException.java

@@ -2,15 +2,19 @@ package pro.taskana.exceptions;
 
 import pro.taskana.Classification;
 
-/**
- * Thrown, when a classification does already exits, but wanted to create with same ID+domain.
- */
+/** Thrown, when a classification does already exits, but wanted to create with same ID+domain. */
 public class ClassificationAlreadyExistException extends TaskanaException {
 
-    private static final long serialVersionUID = 4716611657569005013L;
+  private static final long serialVersionUID = 4716611657569005013L;
 
-    public ClassificationAlreadyExistException(Classification classification) {
-        super("ID='" + classification.getId() + "', KEY='" + classification.getKey() + "', DOMAIN='"
-            + classification.getDomain() + "';");
-    }
+  public ClassificationAlreadyExistException(Classification classification) {
+    super(
+        "ID='"
+            + classification.getId()
+            + "', KEY='"
+            + classification.getKey()
+            + "', DOMAIN='"
+            + classification.getDomain()
+            + "';");
+  }
 }

lib/taskana-core/src/main/java/pro/taskana/exceptions/ClassificationInUseException.java

@@ -1,17 +1,15 @@
 package pro.taskana.exceptions;
 
-/**
- * Thrown if a specific task is not in the database.
- */
+/** Thrown if a specific task is not in the database. */
 public class ClassificationInUseException extends TaskanaException {
 
-    public ClassificationInUseException(String msg) {
-        super(msg);
-    }
+  private static final long serialVersionUID = 1L;
 
-    public ClassificationInUseException(String msg, Throwable cause) {
-        super(msg, cause);
-    }
+  public ClassificationInUseException(String msg) {
+    super(msg);
+  }
 
-    private static final long serialVersionUID = 1L;
+  public ClassificationInUseException(String msg, Throwable cause) {
+    super(msg, cause);
+  }
 }

lib/taskana-core/src/main/java/pro/taskana/exceptions/ClassificationNotFoundException.java

@@ -1,30 +1,27 @@
 package pro.taskana.exceptions;
 
-/**
- * Thrown if a specific task is not in the database.
- */
+/** Thrown if a specific task is not in the database. */
 public class ClassificationNotFoundException extends NotFoundException {
 
-    private String key;
-    private String domain;
+  private static final long serialVersionUID = 1L;
+  private String key;
+  private String domain;
 
-    public ClassificationNotFoundException(String id, String msg) {
-        super(id, msg);
-    }
+  public ClassificationNotFoundException(String id, String msg) {
+    super(id, msg);
+  }
 
-    public ClassificationNotFoundException(String key, String domain, String msg) {
-        super(null, msg);
-        this.key = key;
-        this.domain = domain;
-    }
+  public ClassificationNotFoundException(String key, String domain, String msg) {
+    super(null, msg);
+    this.key = key;
+    this.domain = domain;
+  }
 
-    public String getKey() {
-        return key;
-    }
+  public String getKey() {
+    return key;
+  }
 
-    public String getDomain() {
-        return domain;
-    }
-
-    private static final long serialVersionUID = 1L;
+  public String getDomain() {
+    return domain;
+  }
 }

lib/taskana-core/src/main/java/pro/taskana/exceptions/ConcurrencyException.java

@@ -1,15 +1,16 @@
 package pro.taskana.exceptions;
 
 /**
- * This exception is thrown when an attempt is made to update an object that has already been updated by another user.
+ * This exception is thrown when an attempt is made to update an object that has already been
+ * updated by another user.
  *
  * @author bbr
  */
 public class ConcurrencyException extends TaskanaException {
 
-    public ConcurrencyException(String msg) {
-        super(msg);
-    }
+  private static final long serialVersionUID = 1L;
 
-    private static final long serialVersionUID = 1L;
+  public ConcurrencyException(String msg) {
+    super(msg);
+  }
 }

lib/taskana-core/src/main/java/pro/taskana/exceptions/ConnectionNotSetException.java

@@ -1,14 +1,14 @@
 package pro.taskana.exceptions;
 
 /**
- * Thrown if ConnectionManagementMode is CONNECTION_MANAGED_EXTERNALLY and an attempt is made to call an API method before the setConnection() method has been called.
- *
+ * Thrown if ConnectionManagementMode is CONNECTION_MANAGED_EXTERNALLY and an attempt is made to
+ * call an API method before the setConnection() method has been called.
  */
 public class ConnectionNotSetException extends TaskanaRuntimeException {
 
-    public ConnectionNotSetException() {
-        super("Connection not set");
-    }
+  private static final long serialVersionUID = 1L;
 
-    private static final long serialVersionUID = 1L;
+  public ConnectionNotSetException() {
+    super("Connection not set");
+  }
 }

lib/taskana-core/src/main/java/pro/taskana/exceptions/DomainNotFoundException.java

@@ -5,10 +5,9 @@ package pro.taskana.exceptions;
  */
 public class DomainNotFoundException extends NotFoundException {
 
-    public DomainNotFoundException(String domain, String msg) {
-        super(domain, msg);
-    }
-
-    private static final long serialVersionUID = 1L;
+  private static final long serialVersionUID = 1L;
 
+  public DomainNotFoundException(String domain, String msg) {
+    super(domain, msg);
+  }
 }

lib/taskana-core/src/main/java/pro/taskana/exceptions/InvalidArgumentException.java

@@ -7,13 +7,13 @@ package pro.taskana.exceptions;
  */
 public class InvalidArgumentException extends TaskanaException {
 
-    public InvalidArgumentException(String msg) {
-        super(msg);
-    }
+  private static final long serialVersionUID = 1L;
 
-    public InvalidArgumentException(String msg, Throwable cause) {
-        super(msg, cause);
-    }
+  public InvalidArgumentException(String msg) {
+    super(msg);
+  }
 
-    private static final long serialVersionUID = 1L;
+  public InvalidArgumentException(String msg, Throwable cause) {
+    super(msg, cause);
+  }
 }

lib/taskana-core/src/main/java/pro/taskana/exceptions/InvalidOwnerException.java

@@ -2,13 +2,13 @@ package pro.taskana.exceptions;
 
 /**
  * This exception is thrown when the task state doesn't allow the requested operation.
- * @author bbr
  *
+ * @author bbr
  */
 public class InvalidOwnerException extends TaskanaException {
-    public InvalidOwnerException(String msg) {
-        super(msg);
-    }
+  private static final long serialVersionUID = 1L;
 
-    private static final long serialVersionUID = 1L;
+  public InvalidOwnerException(String msg) {
+    super(msg);
+  }
 }

lib/taskana-core/src/main/java/pro/taskana/exceptions/InvalidStateException.java

@@ -2,13 +2,13 @@ package pro.taskana.exceptions;
 
 /**
  * This exception is thrown when the task state doesn't allow the requested operation.
- * @author bbr
  *
+ * @author bbr
  */
 public class InvalidStateException extends TaskanaException {
-    public InvalidStateException(String msg) {
-        super(msg);
-    }
+  private static final long serialVersionUID = 1L;
 
-    private static final long serialVersionUID = 1L;
+  public InvalidStateException(String msg) {
+    super(msg);
+  }
 }

lib/taskana-core/src/main/java/pro/taskana/exceptions/InvalidWorkbasketException.java

@@ -1,16 +1,16 @@
 package pro.taskana.exceptions;
 
 /**
- * This exception is thrown when a request is made to insert or update a workbasket that is missing a required property.
+ * This exception is thrown when a request is made to insert or update a workbasket that is missing
+ * a required property.
  *
  * @author bbr
  */
-
 public class InvalidWorkbasketException extends TaskanaException {
 
-    public InvalidWorkbasketException(String msg) {
-        super(msg);
-    }
+  private static final long serialVersionUID = 1L;
 
-    private static final long serialVersionUID = 1L;
+  public InvalidWorkbasketException(String msg) {
+    super(msg);
+  }
 }

lib/taskana-core/src/main/java/pro/taskana/exceptions/NotAuthorizedException.java

@@ -1,20 +1,17 @@
 package pro.taskana.exceptions;
 
-/**
- * This exception is used to communicate a not authorized user.
- */
+/** This exception is used to communicate a not authorized user. */
 public class NotAuthorizedException extends TaskanaException {
 
-    private final String currentUserId;
+  private static final long serialVersionUID = 21235L;
+  private final String currentUserId;
 
-    public NotAuthorizedException(String msg, String currentUserId) {
-        super(msg + " - [CURRENT USER: {'" + currentUserId + "'}]");
-        this.currentUserId = currentUserId;
-    }
+  public NotAuthorizedException(String msg, String currentUserId) {
+    super(msg + " - [CURRENT USER: {'" + currentUserId + "'}]");
+    this.currentUserId = currentUserId;
+  }
 
-    public String getCurrentUserId() {
-        return currentUserId;
-    }
-
-    private static final long serialVersionUID = 21235L;
+  public String getCurrentUserId() {
+    return currentUserId;
+  }
 }

lib/taskana-core/src/main/java/pro/taskana/exceptions/NotAuthorizedToQueryWorkbasketException.java

@@ -1,18 +1,15 @@
 package pro.taskana.exceptions;
 
-/**
- * This exception is used to communicate that a user is not authorized to query a Workbasket.
- */
+/** This exception is used to communicate that a user is not authorized to query a Workbasket. */
 public class NotAuthorizedToQueryWorkbasketException extends TaskanaRuntimeException {
 
-    public NotAuthorizedToQueryWorkbasketException(String msg) {
-        super(msg);
-    }
+  private static final long serialVersionUID = 1L;
 
-    public NotAuthorizedToQueryWorkbasketException(String msg, Throwable cause) {
-        super(msg, cause);
-    }
-
-    private static final long serialVersionUID = 1L;
+  public NotAuthorizedToQueryWorkbasketException(String msg) {
+    super(msg);
+  }
 
+  public NotAuthorizedToQueryWorkbasketException(String msg, Throwable cause) {
+    super(msg, cause);
+  }
 }

lib/taskana-core/src/main/java/pro/taskana/exceptions/NotFoundException.java

@@ -1,20 +1,17 @@
 package pro.taskana.exceptions;
 
-/**
- * This exception will be thrown if a specific object is not in the database.
- */
+/** This exception will be thrown if a specific object is not in the database. */
 public class NotFoundException extends TaskanaException {
 
-    String id;
+  private static final long serialVersionUID = 1L;
+  String id;
 
-    public NotFoundException(String id, String message) {
-        super(message);
-        this.id = id;
-    }
+  public NotFoundException(String id, String message) {
+    super(message);
+    this.id = id;
+  }
 
-    public String getId() {
-        return id;
-    }
-
-    private static final long serialVersionUID = 1L;
+  public String getId() {
+    return id;
+  }
 }

lib/taskana-core/src/main/java/pro/taskana/exceptions/SystemException.java

@@ -1,17 +1,15 @@
 package pro.taskana.exceptions;
 
-/**
- * This exception is thrown when a generic taskana problem is encountered.
- */
+/** This exception is thrown when a generic taskana problem is encountered. */
 public class SystemException extends TaskanaRuntimeException {
 
-    public SystemException(String msg) {
-        super(msg);
-    }
+  private static final long serialVersionUID = 1L;
 
-    public SystemException(String msg, Throwable cause) {
-        super(msg, cause);
-    }
+  public SystemException(String msg) {
+    super(msg);
+  }
 
-    private static final long serialVersionUID = 1L;
+  public SystemException(String msg, Throwable cause) {
+    super(msg, cause);
+  }
 }

lib/taskana-core/src/main/java/pro/taskana/exceptions/TaskAlreadyExistException.java

@@ -1,14 +1,14 @@
 package pro.taskana.exceptions;
 
 /**
- * Thrown when a Task is going to be created, but a Task with the same ID does already exist. The Task ID should be
- * unique.
+ * Thrown when a Task is going to be created, but a Task with the same ID does already exist. The
+ * Task ID should be unique.
  */
 public class TaskAlreadyExistException extends TaskanaException {
 
-    public TaskAlreadyExistException(String id) {
-        super(id);
-    }
+  private static final long serialVersionUID = 1L;
 
-    private static final long serialVersionUID = 1L;
+  public TaskAlreadyExistException(String id) {
+    super(id);
+  }
 }

lib/taskana-core/src/main/java/pro/taskana/exceptions/TaskNotFoundException.java

@@ -1,13 +1,11 @@
 package pro.taskana.exceptions;
 
-/**
- * This exception will be thrown if a specific task is not in the database.
- */
+/** This exception will be thrown if a specific task is not in the database. */
 public class TaskNotFoundException extends NotFoundException {
 
-    public TaskNotFoundException(String id, String msg) {
-        super(id, msg);
-    }
+  private static final long serialVersionUID = 1L;
 
-    private static final long serialVersionUID = 1L;
+  public TaskNotFoundException(String id, String msg) {
+    super(id, msg);
+  }
 }

lib/taskana-core/src/main/java/pro/taskana/exceptions/TaskanaException.java

@@ -7,25 +7,26 @@ package pro.taskana.exceptions;
  */
 public class TaskanaException extends Exception {
 
-    private static final long serialVersionUID = 123234345123412L;
+  private static final long serialVersionUID = 123234345123412L;
 
-    public TaskanaException() {
-        super();
-    }
+  public TaskanaException() {
+    super();
+  }
 
-    public TaskanaException(String message) {
-        super(message);
-    }
+  public TaskanaException(String message) {
+    super(message);
+  }
 
-    public TaskanaException(Throwable cause) {
-        super(cause);
-    }
+  public TaskanaException(Throwable cause) {
+    super(cause);
+  }
 
-    public TaskanaException(String message, Throwable cause) {
-        super(message, cause);
-    }
+  public TaskanaException(String message, Throwable cause) {
+    super(message, cause);
+  }
 
-    public TaskanaException(String message, Throwable cause, boolean enableSuppression, boolean writableStackTrace) {
-        super(message, cause, enableSuppression, writableStackTrace);
-    }
+  public TaskanaException(
+      String message, Throwable cause, boolean enableSuppression, boolean writableStackTrace) {
+    super(message, cause, enableSuppression, writableStackTrace);
+  }
 }

lib/taskana-core/src/main/java/pro/taskana/exceptions/TaskanaRuntimeException.java

@@ -7,26 +7,26 @@ package pro.taskana.exceptions;
  */
 public class TaskanaRuntimeException extends RuntimeException {
 
-    private static final long serialVersionUID = 1511142769801824L;
+  private static final long serialVersionUID = 1511142769801824L;
 
-    public TaskanaRuntimeException() {
-        super();
-    }
+  public TaskanaRuntimeException() {
+    super();
+  }
 
-    public TaskanaRuntimeException(String message) {
-        super(message);
-    }
+  public TaskanaRuntimeException(String message) {
+    super(message);
+  }
 
-    public TaskanaRuntimeException(Throwable cause) {
-        super(cause);
-    }
+  public TaskanaRuntimeException(Throwable cause) {
+    super(cause);
+  }
 
-    public TaskanaRuntimeException(String message, Throwable cause) {
-        super(message, cause);
-    }
+  public TaskanaRuntimeException(String message, Throwable cause) {
+    super(message, cause);
+  }
 
-    public TaskanaRuntimeException(String message, Throwable cause, boolean enableSuppression,
-        boolean writableStackTrace) {
-        super(message, cause, enableSuppression, writableStackTrace);
-    }
+  public TaskanaRuntimeException(
+      String message, Throwable cause, boolean enableSuppression, boolean writableStackTrace) {
+    super(message, cause, enableSuppression, writableStackTrace);
+  }
 }

lib/taskana-core/src/main/java/pro/taskana/exceptions/UnsupportedDatabaseException.java

@@ -5,9 +5,9 @@ package pro.taskana.exceptions;
  */
 public class UnsupportedDatabaseException extends RuntimeException {
 
-    public UnsupportedDatabaseException(String name) {
-        super("Database with '" + name + "' not found");
-    }
+  private static final long serialVersionUID = 1L;
 
-    private static final long serialVersionUID = 1L;
+  public UnsupportedDatabaseException(String name) {
+    super("Database with '" + name + "' not found");
+  }
 }

lib/taskana-core/src/main/java/pro/taskana/exceptions/WorkbasketAlreadyExistException.java

@@ -2,15 +2,19 @@ package pro.taskana.exceptions;
 
 import pro.taskana.Workbasket;
 
-/**
- * Thrown, when a workbasket does already exits, but wanted to create with same ID.
- */
+/** Thrown, when a workbasket does already exits, but wanted to create with same ID. */
 public class WorkbasketAlreadyExistException extends TaskanaException {
 
-    private static final long serialVersionUID = 6115013L;
+  private static final long serialVersionUID = 6115013L;
 
-    public WorkbasketAlreadyExistException(Workbasket workbasket) {
-        super("ID='" + workbasket.getId() + "', KEY=' " + workbasket.getKey() + "', DOMAIN='"
-            + workbasket.getDomain() + "';");
-    }
+  public WorkbasketAlreadyExistException(Workbasket workbasket) {
+    super(
+        "ID='"
+            + workbasket.getId()
+            + "', KEY=' "
+            + workbasket.getKey()
+            + "', DOMAIN='"
+            + workbasket.getDomain()
+            + "';");
+  }
 }

lib/taskana-core/src/main/java/pro/taskana/exceptions/WorkbasketInUseException.java

@@ -1,13 +1,11 @@
 package pro.taskana.exceptions;
 
-/**
- * Thrown if a specific Workbasket does have content and should be deleted.
- */
+/** Thrown if a specific Workbasket does have content and should be deleted. */
 public class WorkbasketInUseException extends TaskanaException {
 
-    public WorkbasketInUseException(String msg) {
-        super(msg);
-    }
+  private static final long serialVersionUID = 1234L;
 
-    private static final long serialVersionUID = 1234L;
+  public WorkbasketInUseException(String msg) {
+    super(msg);
+  }
 }

lib/taskana-core/src/main/java/pro/taskana/exceptions/WorkbasketNotFoundException.java

@@ -1,30 +1,27 @@
 package pro.taskana.exceptions;
 
-/**
- * This exception will be thrown if a specific workbasket is not in the database.
- */
+/** This exception will be thrown if a specific workbasket is not in the database. */
 public class WorkbasketNotFoundException extends NotFoundException {
 
-    private String key;
-    private String domain;
+  private static final long serialVersionUID = 1L;
+  private String key;
+  private String domain;
 
-    public WorkbasketNotFoundException(String id, String msg) {
-        super(id, msg);
-    }
+  public WorkbasketNotFoundException(String id, String msg) {
+    super(id, msg);
+  }
 
-    public WorkbasketNotFoundException(String key, String domain, String msg) {
-        super(null, msg);
-        this.key = key;
-        this.domain = domain;
-    }
+  public WorkbasketNotFoundException(String key, String domain, String msg) {
+    super(null, msg);
+    this.key = key;
+    this.domain = domain;
+  }
 
-    public String getKey() {
-        return key;
-    }
+  public String getKey() {
+    return key;
+  }
 
-    public String getDomain() {
-        return domain;
-    }
-
-    private static final long serialVersionUID = 1L;
+  public String getDomain() {
+    return domain;
+  }
 }