=== 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	2014-03-18 08:10:10 +0000
+++ dhis-2/dhis-services/dhis-service-analytics/src/main/java/org/hisp/dhis/analytics/DataQueryParams.java	2014-03-26 09:25:45 +0000
@@ -379,6 +379,17 @@
         
         return this;
     }
+
+    /**
+     * Removes the dimension or filter with the given identifier.
+     */
+    public DataQueryParams removeDimensionOrFilter( String dimension )
+    {
+        removeDimension( dimension );
+        removeFilter( dimension );
+        
+        return this;
+    }
     
     /**
      * Removes dimensions of the given type.

=== modified file 'dhis-2/dhis-services/dhis-service-analytics/src/main/java/org/hisp/dhis/analytics/event/EventQueryParams.java'
--- dhis-2/dhis-services/dhis-service-analytics/src/main/java/org/hisp/dhis/analytics/event/EventQueryParams.java	2014-03-24 22:22:06 +0000
+++ dhis-2/dhis-services/dhis-service-analytics/src/main/java/org/hisp/dhis/analytics/event/EventQueryParams.java	2014-03-26 09:25:45 +0000
@@ -28,6 +28,8 @@
  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
+import static org.hisp.dhis.common.DimensionalObject.PERIOD_DIM_ID;
+
 import java.util.ArrayList;
 import java.util.Date;
 import java.util.HashSet;
@@ -40,8 +42,10 @@
 import org.hisp.dhis.common.DimensionalObject;
 import org.hisp.dhis.common.IdentifiableObject;
 import org.hisp.dhis.common.NameableObject;
+import org.hisp.dhis.common.NameableObjectUtils;
 import org.hisp.dhis.common.QueryItem;
 import org.hisp.dhis.organisationunit.OrganisationUnit;
+import org.hisp.dhis.period.Period;
 import org.hisp.dhis.program.Program;
 import org.hisp.dhis.program.ProgramStage;
 
@@ -152,6 +156,34 @@
         return uniqueItems;
     }
     
+    /**
+     * Replaces periods with start and end dates, using the earliest start date
+     * from the periods as start date and the latest end date from the periods
+     * as end date. Remove the period dimension or filter.
+     */
+    public void replacePeriodsWithStartEndDates()
+    {
+        List<Period> periods = NameableObjectUtils.asTypedList( getDimensionOrFilter( PERIOD_DIM_ID ), Period.class );
+        
+        for ( Period period : periods )
+        {
+            Date start = period.getStartDate();
+            Date end = period.getEndDate();
+            
+            if ( startDate == null || ( start != null && start.before( startDate ) ) )
+            {
+                startDate = start;
+            }
+            
+            if ( endDate == null || ( end != null && end.after( endDate ) ) )
+            {
+                endDate = end;
+            }
+        }
+        
+        removeDimensionOrFilter( PERIOD_DIM_ID );
+    }
+    
     public boolean isOrganisationUnitMode( String mode )
     {
         return organisationUnitMode != null && organisationUnitMode.equalsIgnoreCase( mode );

=== modified file 'dhis-2/dhis-services/dhis-service-analytics/src/main/java/org/hisp/dhis/analytics/event/data/DefaultEventAnalyticsService.java'
--- dhis-2/dhis-services/dhis-service-analytics/src/main/java/org/hisp/dhis/analytics/event/data/DefaultEventAnalyticsService.java	2014-03-24 22:19:59 +0000
+++ dhis-2/dhis-services/dhis-service-analytics/src/main/java/org/hisp/dhis/analytics/event/data/DefaultEventAnalyticsService.java	2014-03-26 09:25:45 +0000
@@ -189,6 +189,8 @@
     {
         queryPlanner.validate( params );
 
+        params.replacePeriodsWithStartEndDates();
+        
         Grid grid = new ListGrid();
 
         // ---------------------------------------------------------------------