throw new ChartException( ChartEnginePlugin.ID, 1, t );
throw new ChartException( ChartEnginePlugin.ID, ChartException.DATA_BINDING, t );
	private void switchDataSet( String datasetName ) throws ChartException	{		try		{			getWizardContext( ).getDataServiceProvider( )					.setDataSet( datasetName );			tablePreview.clearContents( );			if ( datasetName != null )			{				switchDataTable( datasetName );			}			tablePreview.layout( );		}		catch ( Throwable t )		{			throw new ChartException( ChartEnginePlugin.ID, 1, t );		}	}