Bug 206279 Removed computed cols listed in expression builder[07]
Description: Removed computed column listed in expression builder inside DataSet Editor dialog Build number:2.2.2.v20071011 Steps to reproduce: 1. New data source and dataset. 2. Add a computed column in dataset and click OK. 3. Open the dataset, remove the computed column. 4. Add a new computed column and check columns in available Data Sets. Expected result: The removed computed column isn't there. Actual result: The removed computed column is still there for selection. Error log:n/a
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 );
			return getDataSetDesign( dataSet, useColumnHints, useFilters, session );
		}
		return null;
	}
	/**
	 * 
	 * @param session
	 * @param dataSet
	 * @param useColumnHints
	 * @param useFilters
	 * @return