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
Scriptable scope = cx.newObject( parentAndProtoScope );
			scope.setParentScope( parentAndProtoScope );
			scope.setPrototype( parentAndProtoScope );
			return scope;
		}
		finally
		{
			Context.exit( );
		}
	}
	/*
	 * @see org.eclipse.birt.data.engine.impl.IQueryExecutor#getNestedLevel()
	 */
	public int getNestedLevel( )
	{
		return this.nestedLevel;
	}
	/*
	 * @see org.eclipse.birt.data.engine.impl.IQueryExecutor#getDataSourceInstanceHandle()
	 */
	public IDataSourceInstanceHandle getDataSourceInstanceHandle( )
	{
		return this.dataSource;
	}
	/*
	 * @see org.eclipse.birt.data.engine.impl.IQueryExecutor#getJSAggrValueObject()
	 */
	public Scriptable getJSAggrValueObject( )
	{
		return this.aggrTable.getJSAggrValueObject( );