Bug 189363 The aggregation of table should be start with sigma symbol
Description: Follow the spec, after specify a aggregation on a table, the aggregation should be represented by starting with the sigma symbol
xtab/org.eclipse.birt.report.item.crosstab.ui/src/org/eclipse/birt/report/item/crosstab/internal/ui/editors/action/AddSubTotalAction.java
}
		DimensionViewHandle lastDimension = reportHandle.getDimension( viewHandle.getAxisType( ),
				count - 1 );
		return lastDimension.getLevel( lastDimension.getLevelCount( ) - 1 );
	}
	private List getGrandTotalInfo( )
	{
		List retValue = new ArrayList( );
		DimensionViewHandle viewHandle = getDimensionViewHandle( );
		CrosstabReportItemHandle reportHandle = levelHandle.getCrosstab( );
		int measureCount = reportHandle.getMeasureCount( );
		for ( int i = 0; i < measureCount; i++ )
		{
			AggregationDialog.GrandTotalInfo info = new AggregationDialog.GrandTotalInfo( );
			info.setMeasure( reportHandle.getMeasure( i ).getCubeMeasure( ) );
			retValue.add( info );
		}
		List measures = reportHandle.getAggregationMeasures( viewHandle.getAxisType( ) );
		for ( int i = 0; i < measures.size( ); i++ )
		{
			AggregationDialog.GrandTotalInfo info = new AggregationDialog.GrandTotalInfo( );
			MeasureViewHandle measureViewHandle = (MeasureViewHandle) measures.get( i );
			info.setMeasure( measureViewHandle.getCubeMeasure( ) );
			
			info.setFunction( measureViewHandle.getCubeMeasure( ).getFunction( ));
			replaceInfo( info, retValue );
		}
		return retValue;
	}