Bug 153507 Bogus error when bad data set column referenced in group key
Run attached report design. Its group key binding column, "groupkey", is defined to refer to a non-existing data set column: dataSetRow["bad"]. However the actual error seen when previewing the report in BIRT designer: Table (id = 6): + A BIRT exception occurred: Error evaluating Javascript expression. Script engine error: TypeError: valueOf is not a function. Script source: null, line: 0, text: <compiled script>. See next exception for more information. Error evaluating Javascript expression. Script engine error: TypeError: valueOf is not a function. Script source: null, line: 0, text: <compiled script> This error is completely irrelevant to the actual cause of the problem.
data/org.eclipse.birt.data/src/org/eclipse/birt/data/engine/impl/QueryExecutor.java
assert dataSet != null;
		openDataSource( );
		
		dataSet.beforeOpen( );
		
		
		odiQuery = createOdiQuery( );
		odiQuery.setDistinctValueFlag( dataSet.needDistinctValue( ) );
		odiQuery.setExprProcessor( new ExpressionProcessor( dataSet ) );
		populateOdiQuery( );
		prepareOdiQuery( );
		isPrepared = true;
	}
	/**
	 * Open the required DataSource. This method should be called after
	 * "dataSource" is initialized by findDataSource() method.
	 * 
	 * @throws DataException
	 */
	protected void openDataSource( ) throws DataException
	{
		assert odiDataSource == null;
		
		
		if ( dataSource != null )
		{
			
			if ( !dataSource.isOpen( )
					|| DataSetCacheManager.getInstance( ).doesLikeToCache( ) == true )
			{