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/ComputedColumnHelper.java
logger.exiting( ComputedColumnHelper.class.getName( ), "process" );
			return true; 
		}
		
		dataSet.setRowObject( resultObject, true );
		dataSet.setCurrentRowIndex( rowIndex );
		
		
		Context cx = Context.enter( );
		try
		{
			
			
			for ( int i = 0; i < columnExprArray.length; i++ )
			{
				if ( columnExprArray[i] != null )
				{
					Object value = null;
					try
					{
						if ( columnExprArray[i].getHandle( ) != null )
							value = ( (CompiledExpression) columnExprArray[i].getHandle( ) ).evaluate( cx,
									dataSet.getScriptScope( ) );
						else
						{
							value = ScriptEvalUtil.evaluateJSAsExpr( cx,
									dataSet.getJSDataSetObject( ),
									( (IScriptExpression) columnExprArray[i] ).getText( ),
									"ComputedColumn",
									0 );