Bug 214572 Implement IAggregationCellViewProvider for crosstab/chart integration
This interface implements the model logic for the designer UI, when the users design a crosstab with charts. Note that it is independent from the multi-view feature. /** * Return the name of this view */ String getViewName( ); // this should simply return "chart" /** * Returns if the given aggregation cell matches this view */ boolean matchView( AggregationCellHandle cell ); Returns true if chart is supported in this type of aggregation cell /** * Switches given aggregation cell to this view */ void switchView( AggregationCellHandle cell ); create a chart inside the aggregation cell (and remove the data elements). This method is called when the UI tries to switch the cell contents from data element to chart. /** * Restores given aggregation cell to previous view */ void restoreView( AggregationCellHandle cell );
chart/org.eclipse.birt.chart.reportitem.ui/src/org/eclipse/birt/chart/reportitem/ui/ReportDataServiceProvider.java
if ( actualResultSet != null )
			{
				return new GroupedQueryResultSetEvaluatorAdapter( actualResultSet.getResultIterator( ),
						ChartReportItemUtil.hasAggregation( cm ) );
			}
		}
		catch ( BirtException e )
		{
			throw new ChartException( ChartReportItemUIActivator.ID,
					ChartException.DATA_BINDING,
					e );
		}
		finally
		{
			
			Thread.currentThread( ).setContextClassLoader( oldContextLoader );
		}
		return null;
	}
	/**
	 * @param maxRow
	 * @return
	 * @throws BirtException
	 */
	private DataRequestSession prepareDataRequestSession( int maxRow )
			throws BirtException
	{
		DataSessionContext dsc = new DataSessionContext( DataSessionContext.MODE_DIRECT_PRESENTATION,
				getReportDesignHandle( ) );
		Map appContext = new HashMap( );