=== modified file 'dhis-2/dhis-services/dhis-service-analytics/src/main/java/org/hisp/dhis/analytics/DataQueryParams.java'
--- dhis-2/dhis-services/dhis-service-analytics/src/main/java/org/hisp/dhis/analytics/DataQueryParams.java	2013-05-28 11:35:56 +0000
+++ dhis-2/dhis-services/dhis-service-analytics/src/main/java/org/hisp/dhis/analytics/DataQueryParams.java	2013-05-28 13:48:36 +0000
@@ -539,7 +539,7 @@
     }
     
     /**
-     * Generates all permutations of the dimension and filter options for this query.
+     * Generates all permutations of the dimension options for this query.
      * Ignores the data element, category option combo and indicator dimensions.
      */
     public List<List<DimensionItem>> getDimensionItemPermutations()

=== modified file 'dhis-2/dhis-services/dhis-service-analytics/src/main/java/org/hisp/dhis/analytics/data/DefaultAnalyticsService.java'
--- dhis-2/dhis-services/dhis-service-analytics/src/main/java/org/hisp/dhis/analytics/data/DefaultAnalyticsService.java	2013-05-28 11:35:56 +0000
+++ dhis-2/dhis-services/dhis-service-analytics/src/main/java/org/hisp/dhis/analytics/data/DefaultAnalyticsService.java	2013-05-28 13:48:36 +0000
@@ -322,9 +322,9 @@
                 if ( target != null && entry.getValue() != null )
                 {
                     PeriodType queryPt = PeriodType.getPeriodTypeFromIsoString( dataRow.get( periodIndex ) );
-                    PeriodType dataPt = dsPtMap.get( dataRow.get( dataSetIndex ) );
+                    PeriodType dataSetPt = dsPtMap.get( dataRow.get( dataSetIndex ) );
                     
-                    target = target * queryPt.getPeriodSpan( dataPt );
+                    target = target * queryPt.getPeriodSpan( dataSetPt );
                     
                     double value = entry.getValue() * PERCENT / target;
                     

=== modified file 'dhis-2/dhis-services/dhis-service-analytics/src/main/java/org/hisp/dhis/analytics/data/DefaultQueryPlanner.java'
--- dhis-2/dhis-services/dhis-service-analytics/src/main/java/org/hisp/dhis/analytics/data/DefaultQueryPlanner.java	2013-05-28 11:35:56 +0000
+++ dhis-2/dhis-services/dhis-service-analytics/src/main/java/org/hisp/dhis/analytics/data/DefaultQueryPlanner.java	2013-05-28 13:48:36 +0000
@@ -116,6 +116,11 @@
         {
             violation = "Indicators cannot be specified as filter";
         }
+
+        if ( params.getFilters().contains( new BaseDimensionalObject( DATASET_DIM_ID ) ) )
+        {
+            violation = "Data sets cannot be specified as filter";
+        }
         
         if ( params.getFilters().contains( new BaseDimensionalObject( CATEGORYOPTIONCOMBO_DIM_ID ) ) )
         {