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.reportitem.ui/src/org/eclipse/birt/chart/reportitem/ui/ReportDataServiceProvider.java
return null;
	}
	public void setContext( Object context )
	{
		itemHandle = (ExtendedItemHandle) context;
	}
	public void setDataSet( String datasetName )
	{
		boolean needClean = false;
		boolean needAddBinding = false;
		try
		{
			if ( datasetName == null )
			{
				if ( getBoundDataSet( ) != null )
				{
					
					needClean = true;
				}
				itemHandle.setDataSet( null );
			}
			else
			{
				DataSetHandle dataset = getReportDesignHandle( ).findDataSet( datasetName );
				if ( itemHandle.getDataSet( ) != dataset )
				{
					itemHandle.setDataSet( dataset );
					
					
					needClean = true;