super( dataEngine, queryDefn, dataSetDesign, appContext );
super( dataEngine, queryDefn, dataSetDesign, appContext != null ? appContext: new HashMap( ) );
	PreparedOdaDSQuery( DataEngineImpl dataEngine, IQueryDefinition queryDefn,			IBaseDataSetDesign dataSetDesign, Map appContext )			throws DataException	{		super( dataEngine, queryDefn, dataSetDesign, appContext );	}	