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
dataSetDesign.getFilters( ).clear( );
		}
		if ( !( dataSet instanceof JointDataSetHandle ) )
		{
			IBaseDataSourceDesign dataSourceDesign = session.getModelAdaptor( )
					.adaptDataSource( dataSet.getDataSource( ) );
			session.defineDataSource( dataSourceDesign );
		}
		if ( dataSet instanceof JointDataSetHandle )
		{
			defineSourceDataSets( session, dataSet, dataSetDesign );
		}
		session.defineDataSet( dataSetDesign );
		return dataSetDesign;
	}
	
	/**
	 * @param dataSet
	 * @param dataSetDesign
	 * @throws BirtException
	 */
	private void defineSourceDataSets( DataRequestSession session, DataSetHandle dataSet,
			IBaseDataSetDesign dataSetDesign ) throws BirtException
	{
		List dataSets = dataSet.getModuleHandle( ).getAllDataSets( );
		for ( int i = 0; i < dataSets.size( ); i++ )
		{
			DataSetHandle dsHandle = (DataSetHandle) dataSets.get( i );
			if ( dsHandle.getName( ) != null )
			{