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
appContext.put( DataEngine.DATA_SET_CACHE_ROW_LIMIT,
				new Integer( maxRow ) );
		dsc.setAppContext( appContext );
		DataRequestSession session = DataRequestSession.newSession( dsc );
		return session;
	}
	/**
	 * The class is responsible to create query definition.
	 * 
	 * @since BIRT 2.3
	 */
	class BaseQueryHelper extends AbstractChartBaseQueryGenerator
	{
		/**
		 * Constructor of the class.
		 * 
		 * @param chart
		 * @param handle
		 * @param query
		 */
		public BaseQueryHelper( ExtendedItemHandle handle, Chart chart )
		{
			super( handle, chart );
		}
		/**
		 * Create query definition.
		 * 
		 * @param columnExpression
		 * @return
		 * @throws DataException