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
*/
	private void cleanUnusedResultSetColumn( DataSetHandle dataSetHandle,
			DataSetViewData[] dsItemModel )
	{
		PropertyHandle handle = dataSetHandle.getPropertyHandle( DataSetHandle.RESULT_SET_PROP );
		if ( handle != null && handle.getListValue( ) != null )
		{
			ArrayList list = handle.getListValue( );
			int count = list.size( );
			for ( int n = count - 1; n >= 0; n-- )
			{
				ResultSetColumn rsColumn = (ResultSetColumn) list.get( n );
				String columnName = (String) rsColumn.getColumnName( );
				boolean found = false;
				for ( int m = 0; m < dsItemModel.length; m++ )
				{
					if ( columnName.equals( dsItemModel[m].getName( ) ) )
					{
						found = true;
						break;
					}
				}
				if ( !found )
				{
					try
					{
						
						handle.removeItem( rsColumn );
					}
					catch ( PropertyValueException e )