Bug 207825 Crosstab gives wrong default for Totals on Count
xtab/org.eclipse.birt.report.item.crosstab.core/src/org/eclipse/birt/report/item/crosstab/core/de/internal/CrosstabModelUtil.java
{
			cell = measureView.addAggregation( rowDimension,
					rowLevel,
					colDimension,
					colLevel );
		}
		if ( cell != null && cell.getContents( ).size( ) == 0 )
		{
			
			String name = CrosstabModelUtil.generateComputedColumnName( measureView,
					colLevel,
					rowLevel );
			ComputedColumn column = StructureFactory.newComputedColumn( crosstab.getModelHandle( ),
					name );
			String dataType = measureView.getDataType( );
			column.setDataType( dataType );
			column.setExpression( ExpressionUtil.createJSMeasureExpression( measureView.getCubeMeasureName( ) ) );
			column.setAggregateFunction( function != null ? function
					: DEFAULT_MEASURE_FUNCTION );
			if ( rowLevel != null )
			{
				column.addAggregateOn( rowLevel );
			}
			if ( colLevel != null )
			{
				column.addAggregateOn( colLevel );
			}
			
			ComputedColumnHandle columnHandle = ( (ReportItemHandle) crosstab.getModelHandle( ) ).addColumnBinding( column,
					false );