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 odiQuery != null;
		assert this.baseQueryDefn != null;
		Context cx = Context.enter( );
		try
		{
			
			populateGrouping( cx );
			
			
			populateSorting( );
			
			populateFetchEvent( cx );
			
			odiQuery.setMaxRows( this.baseQueryDefn.getMaxRows( ) );
			
			prepareCacheQuery( );
		}
		finally
		{
			Context.exit( );
		}
	}
	/**
	 * TODO: enhance me, this is only a temp logic
	 * Set temporary computed columns to DataSourceQuery where cache is used
	 */
	private void prepareCacheQuery( )
	{
		if ( odiQuery instanceof org.eclipse.birt.data.engine.executor.dscache.DataSourceQuery
				&& temporaryComputedColumns != null