TSK-1377: now properly listing taksIds for selected Items when a subkey is not present.

lib/taskana-core/src/main/java/pro/taskana/monitor/internal/MonitorMapper.java

@@ -308,8 +308,10 @@ public interface MonitorMapper {
           + "<foreach collection='selectedItems' item='selectedItem' separator=' OR '>"
           + "#{selectedItem.key} = T.${groupedBy} AND "
           + "<if test=\"joinWithAttachments\">"
+          + "<if test='selectedItem.subKey != null'>"
           + "A.CLASSIFICATION_KEY = #{selectedItem.subKey} AND "
           + "</if>"
+          + "</if>"
           + "<if test=\"_databaseId == 'db2'\">"
           + "#{selectedItem.upperAgeLimit} >= (DAYS(${timestamp}) - DAYS(CURRENT_TIMESTAMP)) AND "
           + "#{selectedItem.lowerAgeLimit} &lt;= (DAYS(${timestamp}) - DAYS(CURRENT_TIMESTAMP)) "

lib/taskana-core/src/test/java/acceptance/report/GetTaskIdsOfClassificationReportAccTest.java

@@ -128,6 +128,28 @@ class GetTaskIdsOfClassificationReportAccTest extends AbstractReportAccTest {
             "TKI:000000000000000000000000000000000001", "TKI:000000000000000000000000000000000033");
   }
 
+  @WithAccessId(user = "monitor")
+  @Test
+  void should_ReturnTaskIdsOfDetailedClassificationReport_When_SomeSelectedItemsContainSubKey()
+      throws Exception {
+    final List<TimeIntervalColumnHeader> columnHeaders = getListOfColumnHeaders();
+
+    final List<SelectedItem> selectedItems =
+        Arrays.asList(L_30000, new SelectedItem("L10000", "L11000", 0, 0));
+
+    List<String> ids =
+        MONITOR_SERVICE
+            .createClassificationReportBuilder()
+            .withColumnHeaders(columnHeaders)
+            .inWorkingDays()
+            .listTaskIdsForSelectedItems(selectedItems, TaskTimestamp.DUE);
+
+    assertThat(ids).containsExactlyInAnyOrder(
+        "TKI:000000000000000000000000000000000006",
+        "TKI:000000000000000000000000000000000033"
+    );
+  }
+
   @WithAccessId(user = "monitor")
   @Test
   void testGetTaskIdsOfClassificationReportWithDomainFilter() throws Exception {