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
private IResultIterator getFilterResultSetIterator( DataRequestSession dataSession,
			DataSetID dataSet, Scriptable scope, IQueryResults rset ) throws BirtException
	{
		DataSetID parent = dataSet.getParentID( );
		if ( parent == null )
		{
			return rset.getResultIterator( );
		}
		else
		{
			IResultIterator iter = getFilterResultSetIterator( dataSession, parent, scope, rset );
			long rowId = dataSet.getRowID( );
			String queryName = dataSet.getQueryName( );
			assert rowId != -1;
			assert queryName != null;
			iter.moveTo( (int) rowId );
			return iter.getSecondaryIterator( queryName, scope );
		}
	}
	
	/**
	 * copy a query.
	 * 
	 * @param query
	 * @return
	 */
	private QueryDefinition queryCopy( QueryDefinition query )
	{
		if(null == query)