From 278d17ecfee71d93657fc703575f1b2171982685 Mon Sep 17 00:00:00 2001
From: Mustapha Zorgati <15628173+mustaphazorgati@users.noreply.github.com>
Date: Tue, 21 Jul 2020 16:32:23 +0200
Subject: [PATCH] TSK-1344: added key for all rows

---
 .../api/reports/ClassificationReport.java     |   4 +-
 .../taskana/monitor/api/reports/Report.java   |  12 +-
 .../monitor/api/reports/TimestampReport.java  |   4 +-
 .../row/DetailedClassificationRow.java        |  11 +-
 .../monitor/api/reports/row/FoldableRow.java  |  17 +-
 .../taskana/monitor/api/reports/row/Row.java  |   2 +
 .../monitor/api/reports/row/SingleRow.java    |   9 +-
 .../monitor/api/reports/row/TimestampRow.java |  32 +--
 .../taskana/monitor/internal/ReportTest.java  | 247 ++++++++++++------
 .../ReportRepresentationModelAssembler.java   |   6 +-
 .../models/ReportRepresentationModel.java     |   8 +-
 11 files changed, 225 insertions(+), 127 deletions(-)

diff --git a/lib/taskana-core/src/main/java/pro/taskana/monitor/api/reports/ClassificationReport.java b/lib/taskana-core/src/main/java/pro/taskana/monitor/api/reports/ClassificationReport.java
index 6726843d7..fe61cd514 100644
--- a/lib/taskana-core/src/main/java/pro/taskana/monitor/api/reports/ClassificationReport.java
+++ b/lib/taskana-core/src/main/java/pro/taskana/monitor/api/reports/ClassificationReport.java
@@ -71,8 +71,8 @@ public class ClassificationReport extends Report<MonitorQueryItem, TimeIntervalC
     }
 
     @Override
-    protected DetailedClassificationRow createRow(int columnSize) {
-      return new DetailedClassificationRow(columnSize);
+    protected DetailedClassificationRow createRow(String key, int columnSize) {
+      return new DetailedClassificationRow(key, columnSize);
     }
   }
 }
diff --git a/lib/taskana-core/src/main/java/pro/taskana/monitor/api/reports/Report.java b/lib/taskana-core/src/main/java/pro/taskana/monitor/api/reports/Report.java
index ea52c2159..4aa6dd318 100644
--- a/lib/taskana-core/src/main/java/pro/taskana/monitor/api/reports/Report.java
+++ b/lib/taskana-core/src/main/java/pro/taskana/monitor/api/reports/Report.java
@@ -34,7 +34,7 @@ public abstract class Report<I extends QueryItem, H extends ColumnHeader<? super
 
   protected Report(List<H> columnHeaders, String[] rowDesc) {
     this.rowDesc = rowDesc;
-    sumRow = createRow(columnHeaders.size());
+    sumRow = createRow("Total", columnHeaders.size());
     this.columnHeaders = new ArrayList<>(columnHeaders);
   }
 
@@ -69,14 +69,16 @@ public abstract class Report<I extends QueryItem, H extends ColumnHeader<? super
   public final void addItem(I item) {
     Row<I> row = null;
     if (columnHeaders.isEmpty()) {
-      row = reportRows.computeIfAbsent(item.getKey(), (s) -> createRow(columnHeaders.size()));
+      row = reportRows.computeIfAbsent(item.getKey(), key -> createRow(key, columnHeaders.size()));
       row.updateTotalValue(item);
       sumRow.updateTotalValue(item);
     } else {
       for (int i = 0; i < columnHeaders.size(); i++) {
         if (columnHeaders.get(i).fits(item)) {
           if (row == null) {
-            row = reportRows.computeIfAbsent(item.getKey(), (s) -> createRow(columnHeaders.size()));
+            row =
+                reportRows.computeIfAbsent(
+                    item.getKey(), key -> createRow(key, columnHeaders.size()));
           }
           row.addItem(item, i);
           sumRow.addItem(item, i);
@@ -97,8 +99,8 @@ public abstract class Report<I extends QueryItem, H extends ColumnHeader<? super
     items.forEach(this::addItem);
   }
 
-  protected Row<I> createRow(int columnSize) {
-    return new SingleRow<>(columnSize);
+  protected Row<I> createRow(String key, int columnSize) {
+    return new SingleRow<>(key, columnSize);
   }
 
   /**
diff --git a/lib/taskana-core/src/main/java/pro/taskana/monitor/api/reports/TimestampReport.java b/lib/taskana-core/src/main/java/pro/taskana/monitor/api/reports/TimestampReport.java
index 41ba8e264..9a5f30e90 100644
--- a/lib/taskana-core/src/main/java/pro/taskana/monitor/api/reports/TimestampReport.java
+++ b/lib/taskana-core/src/main/java/pro/taskana/monitor/api/reports/TimestampReport.java
@@ -23,8 +23,8 @@ public class TimestampReport extends Report<TimestampQueryItem, TimeIntervalColu
   }
 
   @Override
-  protected TimestampRow createRow(int columnSize) {
-    return new TimestampRow(columnSize);
+  protected TimestampRow createRow(String key, int columnSize) {
+    return new TimestampRow(key, columnSize);
   }
 
   /** Builder for {@link TimestampReport}. */
diff --git a/lib/taskana-core/src/main/java/pro/taskana/monitor/api/reports/row/DetailedClassificationRow.java b/lib/taskana-core/src/main/java/pro/taskana/monitor/api/reports/row/DetailedClassificationRow.java
index eefcac6c4..cff550d3e 100644
--- a/lib/taskana-core/src/main/java/pro/taskana/monitor/api/reports/row/DetailedClassificationRow.java
+++ b/lib/taskana-core/src/main/java/pro/taskana/monitor/api/reports/row/DetailedClassificationRow.java
@@ -9,8 +9,11 @@ import pro.taskana.monitor.api.reports.item.DetailedMonitorQueryItem;
  */
 public class DetailedClassificationRow extends FoldableRow<DetailedMonitorQueryItem> {
 
-  public DetailedClassificationRow(int columnSize) {
-    super(columnSize, (item) -> item.getAttachmentKey() != null ? item.getAttachmentKey() : "N/A");
+  public DetailedClassificationRow(String key, int columnSize) {
+    super(
+        key,
+        columnSize,
+        (item) -> item.getAttachmentKey() != null ? item.getAttachmentKey() : "N/A");
   }
 
   @Override
@@ -19,7 +22,7 @@ public class DetailedClassificationRow extends FoldableRow<DetailedMonitorQueryI
   }
 
   @Override
-  Row<DetailedMonitorQueryItem> buildRow(int columnSize) {
-    return new SingleRow<>(columnSize);
+  protected Row<DetailedMonitorQueryItem> buildRow(String key, int columnSize) {
+    return new SingleRow<>(key, columnSize);
   }
 }
diff --git a/lib/taskana-core/src/main/java/pro/taskana/monitor/api/reports/row/FoldableRow.java b/lib/taskana-core/src/main/java/pro/taskana/monitor/api/reports/row/FoldableRow.java
index c781859fd..1137e270c 100644
--- a/lib/taskana-core/src/main/java/pro/taskana/monitor/api/reports/row/FoldableRow.java
+++ b/lib/taskana-core/src/main/java/pro/taskana/monitor/api/reports/row/FoldableRow.java
@@ -17,12 +17,13 @@ import pro.taskana.monitor.api.reports.item.QueryItem;
  */
 public abstract class FoldableRow<I extends QueryItem> extends SingleRow<I> {
 
-  private Map<String, Row<I>> foldableRows = new LinkedHashMap<>();
-  private Function<? super I, String> calcFoldableRowKey;
-  private int columnSize;
+  private final Map<String, Row<I>> foldableRows = new LinkedHashMap<>();
+  private final Function<? super I, String> calcFoldableRowKey;
+  private final int columnSize;
 
-  protected FoldableRow(int columnSize, Function<? super I, String> calcFoldableRowKey) {
-    super(columnSize);
+  protected FoldableRow(
+      String key, int columnSize, Function<? super I, String> calcFoldableRowKey) {
+    super(key, columnSize);
     this.columnSize = columnSize;
     this.calcFoldableRowKey = calcFoldableRowKey;
   }
@@ -39,7 +40,7 @@ public abstract class FoldableRow<I extends QueryItem> extends SingleRow<I> {
   public void addItem(I item, int index) throws IndexOutOfBoundsException {
     super.addItem(item, index);
     foldableRows
-        .computeIfAbsent(calcFoldableRowKey.apply(item), (s) -> buildRow(columnSize))
+        .computeIfAbsent(calcFoldableRowKey.apply(item), key -> buildRow(key, columnSize))
         .addItem(item, index);
   }
 
@@ -47,7 +48,7 @@ public abstract class FoldableRow<I extends QueryItem> extends SingleRow<I> {
   public void updateTotalValue(I item) {
     super.updateTotalValue(item);
     foldableRows
-        .computeIfAbsent(calcFoldableRowKey.apply(item), (s) -> buildRow(columnSize))
+        .computeIfAbsent(calcFoldableRowKey.apply(item), key -> buildRow(key, columnSize))
         .updateTotalValue(item);
   }
 
@@ -55,7 +56,7 @@ public abstract class FoldableRow<I extends QueryItem> extends SingleRow<I> {
     return foldableRows.get(key);
   }
 
-  abstract Row<I> buildRow(int columnSize);
+  protected abstract Row<I> buildRow(String key, int columnSize);
 
   @Override
   public String toString() {
diff --git a/lib/taskana-core/src/main/java/pro/taskana/monitor/api/reports/row/Row.java b/lib/taskana-core/src/main/java/pro/taskana/monitor/api/reports/row/Row.java
index 2e311649c..8f3ac00e4 100644
--- a/lib/taskana-core/src/main/java/pro/taskana/monitor/api/reports/row/Row.java
+++ b/lib/taskana-core/src/main/java/pro/taskana/monitor/api/reports/row/Row.java
@@ -28,6 +28,8 @@ public interface Row<I extends QueryItem> {
    */
   void updateTotalValue(I item);
 
+  String getKey();
+
   int getTotalValue();
 
   int[] getCells();
diff --git a/lib/taskana-core/src/main/java/pro/taskana/monitor/api/reports/row/SingleRow.java b/lib/taskana-core/src/main/java/pro/taskana/monitor/api/reports/row/SingleRow.java
index 2c12726b5..9da1a6cc1 100644
--- a/lib/taskana-core/src/main/java/pro/taskana/monitor/api/reports/row/SingleRow.java
+++ b/lib/taskana-core/src/main/java/pro/taskana/monitor/api/reports/row/SingleRow.java
@@ -14,8 +14,10 @@ public class SingleRow<I extends QueryItem> implements Row<I> {
 
   private final int[] cells;
   private int total = 0;
+  private final String key;
 
-  public SingleRow(int columnCount) {
+  public SingleRow(String key, int columnCount) {
+    this.key = key;
     cells = new int[columnCount];
   }
 
@@ -30,6 +32,11 @@ public class SingleRow<I extends QueryItem> implements Row<I> {
     total += item.getValue();
   }
 
+  @Override
+  public String getKey() {
+    return key;
+  }
+
   @Override
   public final int getTotalValue() {
     return total;
diff --git a/lib/taskana-core/src/main/java/pro/taskana/monitor/api/reports/row/TimestampRow.java b/lib/taskana-core/src/main/java/pro/taskana/monitor/api/reports/row/TimestampRow.java
index 80ab75609..856d9f8c9 100644
--- a/lib/taskana-core/src/main/java/pro/taskana/monitor/api/reports/row/TimestampRow.java
+++ b/lib/taskana-core/src/main/java/pro/taskana/monitor/api/reports/row/TimestampRow.java
@@ -9,8 +9,8 @@ import pro.taskana.monitor.api.reports.item.TimestampQueryItem;
  */
 public class TimestampRow extends FoldableRow<TimestampQueryItem> {
 
-  public TimestampRow(int columnSize) {
-    super(columnSize, TimestampQueryItem::getOrgLevel1);
+  public TimestampRow(String key, int columnSize) {
+    super(key, columnSize, TimestampQueryItem::getOrgLevel1);
   }
 
   @Override
@@ -19,8 +19,8 @@ public class TimestampRow extends FoldableRow<TimestampQueryItem> {
   }
 
   @Override
-  OrgLevel1Row buildRow(int columnSize) {
-    return new OrgLevel1Row(columnSize);
+  protected OrgLevel1Row buildRow(String key, int columnSize) {
+    return new OrgLevel1Row(key, columnSize);
   }
 
   /**
@@ -29,8 +29,8 @@ public class TimestampRow extends FoldableRow<TimestampQueryItem> {
    */
   public static final class OrgLevel1Row extends FoldableRow<TimestampQueryItem> {
 
-    private OrgLevel1Row(int columnSize) {
-      super(columnSize, TimestampQueryItem::getOrgLevel2);
+    private OrgLevel1Row(String key, int columnSize) {
+      super(key, columnSize, TimestampQueryItem::getOrgLevel2);
     }
 
     @Override
@@ -39,8 +39,8 @@ public class TimestampRow extends FoldableRow<TimestampQueryItem> {
     }
 
     @Override
-    OrgLevel2Row buildRow(int columnSize) {
-      return new OrgLevel2Row(columnSize);
+    protected OrgLevel2Row buildRow(String key, int columnSize) {
+      return new OrgLevel2Row(key, columnSize);
     }
   }
 
@@ -50,8 +50,8 @@ public class TimestampRow extends FoldableRow<TimestampQueryItem> {
    */
   public static final class OrgLevel2Row extends FoldableRow<TimestampQueryItem> {
 
-    private OrgLevel2Row(int columnSize) {
-      super(columnSize, TimestampQueryItem::getOrgLevel3);
+    private OrgLevel2Row(String key, int columnSize) {
+      super(key, columnSize, TimestampQueryItem::getOrgLevel3);
     }
 
     @Override
@@ -60,8 +60,8 @@ public class TimestampRow extends FoldableRow<TimestampQueryItem> {
     }
 
     @Override
-    OrgLevel3Row buildRow(int columnSize) {
-      return new OrgLevel3Row(columnSize);
+    protected OrgLevel3Row buildRow(String key, int columnSize) {
+      return new OrgLevel3Row(key, columnSize);
     }
   }
 
@@ -71,8 +71,8 @@ public class TimestampRow extends FoldableRow<TimestampQueryItem> {
    */
   public static final class OrgLevel3Row extends FoldableRow<TimestampQueryItem> {
 
-    private OrgLevel3Row(int columnSize) {
-      super(columnSize, TimestampQueryItem::getOrgLevel4);
+    private OrgLevel3Row(String key,  int columnSize) {
+      super(key, columnSize, TimestampQueryItem::getOrgLevel4);
     }
 
     @Override
@@ -81,8 +81,8 @@ public class TimestampRow extends FoldableRow<TimestampQueryItem> {
     }
 
     @Override
-    Row<TimestampQueryItem> buildRow(int columnSize) {
-      return new SingleRow<>(columnSize);
+    protected Row<TimestampQueryItem> buildRow(String key, int columnSize) {
+      return new SingleRow<>(key, columnSize);
     }
   }
 }
diff --git a/lib/taskana-core/src/test/java/pro/taskana/monitor/internal/ReportTest.java b/lib/taskana-core/src/test/java/pro/taskana/monitor/internal/ReportTest.java
index 3eb83a2f1..da4030f36 100644
--- a/lib/taskana-core/src/test/java/pro/taskana/monitor/internal/ReportTest.java
+++ b/lib/taskana-core/src/test/java/pro/taskana/monitor/internal/ReportTest.java
@@ -15,7 +15,9 @@ import pro.taskana.monitor.api.reports.Report;
 import pro.taskana.monitor.api.reports.header.TimeIntervalColumnHeader;
 import pro.taskana.monitor.api.reports.item.MonitorQueryItem;
 import pro.taskana.monitor.api.reports.item.QueryItemPreprocessor;
+import pro.taskana.monitor.api.reports.row.FoldableRow;
 import pro.taskana.monitor.api.reports.row.Row;
+import pro.taskana.monitor.api.reports.row.SingleRow;
 
 /** Tests for {@link Report}. */
 class ReportTest {
@@ -37,7 +39,12 @@ class ReportTest {
   }
 
   @Test
-  void testEmptyReport() {
+  void should_HaveSumRowTotalKey_When_ReportExists() {
+    assertThat(report.getSumRow().getKey()).isEqualTo("Total");
+  }
+
+  @Test
+  void should_HaveEmptySumRow_When_ReportIsEmpty() {
     // then
     assertThat(report.getRows()).isEmpty();
     Row<MonitorQueryItem> sumRow = report.getSumRow();
@@ -46,7 +53,54 @@ class ReportTest {
   }
 
   @Test
-  void testInsertSingleItem() {
+  void should_CreateRowAndSetKey_When_InsertingItemWithUnknownKey() {
+    // when
+    report.addItem(item);
+
+    // then
+    assertThat(report.getRows()).hasSize(1);
+    Row<MonitorQueryItem> row = report.getRow("key");
+    assertThat(row.getKey()).isEqualTo("key");
+  }
+
+  @Test
+  void should_CreateFoldableRowAndSetKey_When_InsertingItemWithUnknownKey() {
+    // when
+    ReportWithFoldableRow report =
+        new ReportWithFoldableRow(HEADERS, new String[] {"rowDesc", "foldableRowDesc"});
+    report.addItem(item);
+
+    // then
+    assertThat(report.getRows()).hasSize(1);
+    FoldableTestRow row = report.getRow("key");
+    assertThat(row.getKey()).isEqualTo("key");
+
+    assertThat(row.getFoldableRowCount()).isOne();
+    Row<MonitorQueryItem> foldableRow = row.getFoldableRow("KEY");
+    assertThat(foldableRow.getKey()).isEqualTo("KEY");
+  }
+
+  @Test
+  void should_AppendItemValueInFoldableRow_When_ItemIsInserted() {
+    // when
+    ReportWithFoldableRow report =
+        new ReportWithFoldableRow(HEADERS, new String[] {"rowDesc", "foldableRowDesc"});
+    report.addItem(item);
+
+    // then
+    assertThat(report.getRows()).hasSize(1);
+    FoldableTestRow row = report.getRow("key");
+    assertThat(row.getCells()).isEqualTo(new int[] {item.getValue(), 0, 0, 0});
+    assertThat(row.getTotalValue()).isEqualTo(item.getValue());
+
+    assertThat(row.getFoldableRowCount()).isOne();
+    Row<MonitorQueryItem> foldableRow = row.getFoldableRow("KEY");
+    assertThat(foldableRow.getCells()).isEqualTo(new int[] {item.getValue(), 0, 0, 0});
+    assertThat(foldableRow.getTotalValue()).isEqualTo(item.getValue());
+  }
+
+  @Test
+  void should_AppendItemValue_When_ItemIsInserted() {
     // when
     report.addItem(item);
 
@@ -58,7 +112,7 @@ class ReportTest {
   }
 
   @Test
-  void testInsertSameItemMultipleTimes() {
+  void should_AppendItemValue_When_CellAlreadyContainsValue() {
     // when
     report.addItem(item);
     report.addItem(item);
@@ -71,13 +125,7 @@ class ReportTest {
   }
 
   @Test
-  void testInsertSameItemMultipleTimes2() {
-    // given
-    MonitorQueryItem item = new MonitorQueryItem();
-    item.setKey("key");
-    item.setAgeInDays(0);
-    item.setNumberOfTasks(3);
-
+  void should_AppendItemValue_When_UsingBulkOperationToInsertItems() {
     // when
     report.addItems(Arrays.asList(item, item));
 
@@ -89,80 +137,7 @@ class ReportTest {
   }
 
   @Test
-  void testInsertSameItemMultipleTimesWithPreProcessor() {
-    // given
-    int overrideValue = 5;
-    QueryItemPreprocessor<MonitorQueryItem> preprocessor =
-        (item) -> {
-          item.setNumberOfTasks(overrideValue);
-          return item;
-        };
-    // when
-    report.addItems(Arrays.asList(item, item), preprocessor);
-
-    // then
-    assertThat(report.getRows()).hasSize(1);
-    Row<MonitorQueryItem> row = report.getRow("key");
-    assertThat(row.getCells()).isEqualTo(new int[] {2 * overrideValue, 0, 0, 0});
-    assertThat(row.getTotalValue()).isEqualTo(2 * overrideValue);
-  }
-
-  @Test
-  void testInsertItemWithNoColumnHeaders() {
-    // given
-    List<TimeIntervalColumnHeader> headerList = Collections.emptyList();
-    report =
-        new MonitorQueryItemTimeIntervalColumnHeaderReport(headerList, new String[] {"rowDesc"});
-
-    // when
-    report.addItem(item);
-
-    // then
-    assertThat(report.getRows()).hasSize(1);
-    assertThat(report.getRow("key").getCells()).isEqualTo(new int[0]);
-    assertThat(report.getRow("key").getTotalValue()).isEqualTo(item.getValue());
-  }
-
-  @Test
-  void testInsertItemWhichIsNotInHeaderScopes() {
-    // given
-    item.setAgeInDays(-2);
-    // when
-    report.addItem(item);
-
-    // then
-    assertThat(report.getRows()).isEmpty();
-    Row<MonitorQueryItem> sumRow = report.getSumRow();
-    assertThat(sumRow.getCells()).isEqualTo(new int[] {0, 0, 0, 0});
-    assertThat(sumRow.getTotalValue()).isEqualTo(0);
-  }
-
-  @Test
-  void testInsertItemWhichIsInMultipleHeaderScopes() {
-    // given
-    List<TimeIntervalColumnHeader> headers = new ArrayList<>(HEADERS);
-    headers.add(new TimeIntervalColumnHeader(0, 3));
-    report = new MonitorQueryItemTimeIntervalColumnHeaderReport(headers, new String[] {"rowDesc"});
-
-    item.setAgeInDays(2);
-
-    // when
-    report.addItem(item);
-
-    // then
-    assertThat(report.getRows()).hasSize(1);
-
-    Row<MonitorQueryItem> row = report.getRow("key");
-    assertThat(row.getCells()).isEqualTo(new int[] {0, 0, item.getValue(), 0, item.getValue()});
-    assertThat(row.getTotalValue()).isEqualTo(2 * item.getValue());
-
-    Row<MonitorQueryItem> sumRow = report.getSumRow();
-    assertThat(sumRow.getCells()).isEqualTo(new int[] {0, 0, item.getValue(), 0, item.getValue()});
-    assertThat(sumRow.getTotalValue()).isEqualTo(2 * item.getValue());
-  }
-
-  @Test
-  void testInsertItemWithPreProcessor() {
+  void should_PreProcessItem_When_PreprocessorIsDefined() {
     // given
     int overrideValue = 5;
     QueryItemPreprocessor<MonitorQueryItem> preprocessor =
@@ -187,6 +162,79 @@ class ReportTest {
     assertThat(sumRow.getTotalValue()).isEqualTo(overrideValue);
   }
 
+  @Test
+  void should_PreProcessItem_When_PreprocessorIsDefinedForBulkInsert() {
+    // given
+    int overrideValue = 5;
+    QueryItemPreprocessor<MonitorQueryItem> preprocessor =
+        (item) -> {
+          item.setNumberOfTasks(overrideValue);
+          return item;
+        };
+    // when
+    report.addItems(Arrays.asList(item, item), preprocessor);
+
+    // then
+    assertThat(report.getRows()).hasSize(1);
+    Row<MonitorQueryItem> row = report.getRow("key");
+    assertThat(row.getCells()).isEqualTo(new int[] {2 * overrideValue, 0, 0, 0});
+    assertThat(row.getTotalValue()).isEqualTo(2 * overrideValue);
+  }
+
+  @Test
+  void should_OnlyContainTotalRows_When_ReportContainsNoHeaders() {
+    // given
+    List<TimeIntervalColumnHeader> headerList = Collections.emptyList();
+    report =
+        new MonitorQueryItemTimeIntervalColumnHeaderReport(headerList, new String[] {"rowDesc"});
+
+    // when
+    report.addItem(item);
+
+    // then
+    assertThat(report.getRows()).hasSize(1);
+    assertThat(report.getRow("key").getCells()).isEqualTo(new int[0]);
+    assertThat(report.getRow("key").getTotalValue()).isEqualTo(item.getValue());
+  }
+
+  @Test
+  void should_NotInsertItem_When_ItemIsOutOfHeaderScope() {
+    // given
+    item.setAgeInDays(-2);
+    // when
+    report.addItem(item);
+
+    // then
+    assertThat(report.getRows()).isEmpty();
+    Row<MonitorQueryItem> sumRow = report.getSumRow();
+    assertThat(sumRow.getCells()).isEqualTo(new int[] {0, 0, 0, 0});
+    assertThat(sumRow.getTotalValue()).isEqualTo(0);
+  }
+
+  @Test
+  void should_InsertItemMultipleTimes_When_HeaderFitsMultipleTimes() {
+    // given
+    List<TimeIntervalColumnHeader> headers = new ArrayList<>(HEADERS);
+    headers.add(new TimeIntervalColumnHeader(0, 3));
+    report = new MonitorQueryItemTimeIntervalColumnHeaderReport(headers, new String[] {"rowDesc"});
+
+    item.setAgeInDays(2);
+
+    // when
+    report.addItem(item);
+
+    // then
+    assertThat(report.getRows()).hasSize(1);
+
+    Row<MonitorQueryItem> row = report.getRow("key");
+    assertThat(row.getCells()).isEqualTo(new int[] {0, 0, item.getValue(), 0, item.getValue()});
+    assertThat(row.getTotalValue()).isEqualTo(2 * item.getValue());
+
+    Row<MonitorQueryItem> sumRow = report.getSumRow();
+    assertThat(sumRow.getCells()).isEqualTo(new int[] {0, 0, item.getValue(), 0, item.getValue()});
+    assertThat(sumRow.getTotalValue()).isEqualTo(2 * item.getValue());
+  }
+
   private static class MonitorQueryItemTimeIntervalColumnHeaderReport
       extends Report<MonitorQueryItem, TimeIntervalColumnHeader> {
 
@@ -195,4 +243,35 @@ class ReportTest {
       super(headerList, rowDesc);
     }
   }
+
+  private static class ReportWithFoldableRow
+      extends Report<MonitorQueryItem, TimeIntervalColumnHeader> {
+
+    protected ReportWithFoldableRow(
+        List<TimeIntervalColumnHeader> columnHeaders, String[] rowDesc) {
+      super(columnHeaders, rowDesc);
+    }
+
+    @Override
+    public FoldableTestRow getRow(String key) {
+      return (FoldableTestRow) super.getRow(key);
+    }
+
+    @Override
+    protected Row<MonitorQueryItem> createRow(String key, int columnSize) {
+      return new FoldableTestRow(key, columnSize);
+    }
+  }
+
+  private static class FoldableTestRow extends FoldableRow<MonitorQueryItem> {
+
+    protected FoldableTestRow(String key, int columnSize) {
+      super(key, columnSize, (item) -> item.getKey().toUpperCase());
+    }
+
+    @Override
+    protected Row<MonitorQueryItem> buildRow(String key, int columnSize) {
+      return new SingleRow<>(key, columnSize);
+    }
+  }
 }
diff --git a/rest/taskana-rest-spring/src/main/java/pro/taskana/monitor/rest/assembler/ReportRepresentationModelAssembler.java b/rest/taskana-rest-spring/src/main/java/pro/taskana/monitor/rest/assembler/ReportRepresentationModelAssembler.java
index 438c77217..f4fa1939b 100644
--- a/rest/taskana-rest-spring/src/main/java/pro/taskana/monitor/rest/assembler/ReportRepresentationModelAssembler.java
+++ b/rest/taskana-rest-spring/src/main/java/pro/taskana/monitor/rest/assembler/ReportRepresentationModelAssembler.java
@@ -99,7 +99,11 @@ public class ReportRepresentationModelAssembler {
         report.getColumnHeaders().stream().map(H::getDisplayName).toArray(String[]::new);
     ReportRepresentationModel.MetaInformation meta =
         new ReportRepresentationModel.MetaInformation(
-            report.getClass().getSimpleName(), time.toString(), header, report.getRowDesc());
+            report.getClass().getSimpleName(),
+            time.toString(),
+            header,
+            report.getRowDesc(),
+            report.getSumRow().getKey());
 
     // iterate over each Row and transform it to a RowResource while keeping the domain key.
     List<ReportRepresentationModel.RowResource> rows =
diff --git a/rest/taskana-rest-spring/src/main/java/pro/taskana/monitor/rest/models/ReportRepresentationModel.java b/rest/taskana-rest-spring/src/main/java/pro/taskana/monitor/rest/models/ReportRepresentationModel.java
index 82f4c4deb..320089a8d 100644
--- a/rest/taskana-rest-spring/src/main/java/pro/taskana/monitor/rest/models/ReportRepresentationModel.java
+++ b/rest/taskana-rest-spring/src/main/java/pro/taskana/monitor/rest/models/ReportRepresentationModel.java
@@ -88,22 +88,22 @@ public class ReportRepresentationModel extends RepresentationModel<ReportReprese
   /** Meta Information about this ReportResource. */
   public static class MetaInformation {
 
-    private static final String TOTAL_DESC = "Total";
-
     private final String name;
     private final String date;
     private final String[] header;
     private final String[] rowDesc;
+    private final String totalDesc;
 
-    public MetaInformation(String name, String date, String[] header, String[] rowDesc) {
+    public MetaInformation(String name, String date, String[] header, String[] rowDesc, String totalDesc) {
       this.name = name;
       this.date = date;
       this.header = header;
       this.rowDesc = rowDesc;
+      this.totalDesc = totalDesc;
     }
 
     public String getTotalDesc() {
-      return TOTAL_DESC;
+      return totalDesc;
     }
 
     public String getName() {