Bug 145478 Unable "Select Value" in the Join data set's filter
Step to reproduce: 1.new a join data set(please use the attached file) 2.right click the dataset and click the Edit 3.go to the Filter pane and set a filer 4.click the list of Value1 Actual result: A warning pop up and cant select Value.
UI/org.eclipse.birt.report.designer.ui/src/org/eclipse/birt/report/designer/data/ui/util/DataSetProvider.java
}
			}
		}
		return element;
	}
	
	/**
	 * 
	 * @param dataSet
	 * @param useColumnHints
	 * @param useFilters
	 * @return
	 * @throws BirtException
	 */
	public final IBaseDataSetDesign getDataSetDesign( DataSetHandle dataSet,
			boolean useColumnHints, boolean useFilters ) throws BirtException
	{
		if ( dataSet != null )
		{
			DataRequestSession session = getDataRequestSession( dataSet );
			IBaseDataSetDesign dataSetDesign = session.getModelAdaptor( )
					.adaptDataSet( dataSet );
			if ( !useColumnHints )
			{
				dataSetDesign.getResultSetHints( ).clear( );
			}
			if ( !useFilters )
			{
				dataSetDesign.getFilters( ).clear( );
			}