Bug 191644 Dataset don't be cached in Chart Builder.
Build ID: I20070517-1700 Birt Steps To Reproduce: 1. New a Chart. 2. Set dataset from remote db. 3. Switch tabs of Chart Builder, it is OK. 4. Shut off network. 5. Switch tabs of Chart Builder again. 6. Some exception will throw, it shows the db accessing is fail. Expected Result: The dataset should be cached. Actual Result: It looks like the dataset don't be cached. More information:
chart/org.eclipse.birt.chart.reportitem.ui/src/org/eclipse/birt/chart/reportitem/ui/ReportDataServiceProvider.java
return invokeNewDataSet( );
		}
		else if ( command == COMMAND_EDIT_FILTER )
		{
			return invokeEditFilter( );
		}
		else if ( command == COMMAND_EDIT_PARAMETER )
		{
			return invokeEditParameter( );
		}
		else if ( command == COMMAND_EDIT_BINDING )
		{
			return invokeDataBinding( );
		}
		return Window.CANCEL;
	}
	protected int invokeNewDataSet( )
	{
		List dataSources = getReportDesignHandle( ).getVisibleDataSources( );
		if ( dataSources.isEmpty( ) )
		{
			
			new NewDataSourceAction( ).run( );
		}
		IAction action = new NewDataSetAction( );
		PlatformUI.getWorkbench( ).getHelpSystem( ).setHelp( action,
				ChartHelpContextIds.DIALOG_NEW_DATA_SET );
		action.run( );
		return Window.OK;
	}