Bug 200133 Chart can not share the column binding from table item[00]
Description: Chart can not share the column binding from table item[00] Step: 1. New a datasource and dataset 2. New a table named table1 and binding the dataset 3. New a chart and binding the sharing result set on table1 Actual result: The data columns have been not share on the chart Exceptioon result: The data column binding will share on the chart
chart/org.eclipse.birt.chart.ui.extension/src/org/eclipse/birt/chart/ui/swt/wizard/TaskSelectData.java
{
		previewPainter = new ChartPreviewPainter( (ChartWizardContext) getContext( ) );
		previewCanvas.addPaintListener( previewPainter );
		previewCanvas.addControlListener( previewPainter );
		previewPainter.setPreview( previewCanvas );
	}
	protected Chart getChartModel( )
	{
		if ( getContext( ) == null )
		{
			return null;
		}
		return ( (ChartWizardContext) getContext( ) ).getModel( );
	}
	private int switchDataSet( String datasetName ) throws ChartException
	{
		int bCancel = Window.OK;
		if ( getDataServiceProvider( ).getBoundDataSet( ) != null
				&& getDataServiceProvider( ).getBoundDataSet( )
						.equals( datasetName ) )
		{
			return bCancel;
		}
		try
		{
			
			getDataServiceProvider( ).setDataSet( datasetName );
			tablePreview.clearContents( );
			
			if ( datasetName == null )