Bug 182680 Use feature of new Aggregation framework of Data Engine.
DataEngine will implement new aggregation framework in 2.2.0RC0. After the implementation is finished Engine should go ahead to use new column bindings in definition of map/highlight.
engine/org.eclipse.birt.report.engine/src/org/eclipse/birt/report/engine/api/impl/DataExtractionTask.java
assert rsetName != null;
		assert executionContext.getDataEngine( ) != null;
		prepareMetaData( );
		DataRequestSession dataSession = executionContext.getDataEngine( ).getDTESession( );
		try
		{
			String rsetId = rsetName2Id( rsetName );
			if ( rsetId != null )
			{
				IQueryResults results = null;
				if(null == filterExpressions)
				{
					results = dataSession.getQueryResults( rsetId );
				}
				else
				{
					
					String queryId = (String) rsetId2queryIdMapping.get( rsetId );
					QueryDefinition query = (QueryDefinition) getQuery( queryId );
					QueryDefinition newQuery = queryCopy( query );
					if( null == newQuery )
					{
						return null;
					}
					
					
					for(int iNum = 0; iNum < filterExpressions.length; iNum++)
					{
						newQuery.getFilters( ).add( filterExpressions[ iNum ] );
					}