Fixed the test for the ParallelMultiDimensionalGroupingProcessor

java/com.sap.sse.datamining.test/src/com/sap/sse/datamining/test/components/util/BlockingInstructionWrapper.java

@@ -0,0 +1,31 @@
+package com.sap.sse.datamining.test.components.util;
+
+import com.sap.sse.datamining.test.util.ConcurrencyTestsUtil;
+
+public class BlockingInstructionWrapper implements Runnable {
+    
+    private Runnable innerInstruction;
+
+    private boolean workIsInProgress;
+
+    public BlockingInstructionWrapper(Runnable innerInstruction) {
+        this.innerInstruction = innerInstruction;
+        workIsInProgress = true;
+    }
+
+    @Override
+    public void run() {
+        while (workIsInProgress) {
+            ConcurrencyTestsUtil.sleepFor(100);
+        }
+        innerInstruction.run();
+    }
+    
+    /**
+     * Tells the instruction, that the work is now done. It won't block it's inner instruction anymore and calls the run method of it.
+     */
+    public void workIsNowFinished() {
+        workIsInProgress = false;
+    }
+
+}

java/com.sap.sse.datamining.test/src/com/sap/sse/datamining/test/components/util/Number.java

@@ -23,6 +23,7 @@ public class Number {
     @Dimension("crossSum")
     public int getCrossSum() {
         int crossSum = 0;
+        int value = this.value;
         while (value != 0) {
               crossSum += value % 10;
               value /= 10;
@@ -30,4 +31,9 @@ public class Number {
         return crossSum;
     }
 
+    @Override
+    public String toString() {
+        return "Number " + value;
+    }
+
 }