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
{
		return (IQueryDefinition) queryId2QueryMapping.get( queryId );
	}
	/**
	 * load map from query id to result set id from report document.
	 */
	private void loadResultSetMetaData( ) throws EngineException
	{
		DataInputStream dis = null;
		try
		{
			HashMap query2ResultMetaData = report.getResultMetaData( );
			IDocArchiveReader reader = reportDocReader.getArchive( );
			dis = new DataInputStream( reader
					.getStream( ReportDocumentConstants.DATA_META_STREAM ) );
			HashMap queryCounts = new HashMap( );
			
			IDataEngine dataEngine = executionContext.getDataEngine( );
			ArrayList result = dataEngine.loadDteMetaInfo( dis );			
			
			if ( result != null )
			{
				
				for ( int i = 0; i < result.size( ); i++ )
				{
				
					String[] rsetRelation = (String[])result.get( i );
					
					String queryId = rsetRelation[2];