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
/**
	 * 
	 * @param rePrepare
	 */
	public void setRePrepare( boolean rePrepare )
	{
		if ( this.getCurrentInstance( ) != null )
			this.getCurrentInstance( ).setRePrepare( rePrepare );
	}
	/**
	 * 
	 * @param model
	 */
	public void setModel( int model )
	{
		this.currentModel = model;
	}
}
class ComputedColumnHelperInstance
{
	private DataSetRuntime dataSet;
	
	private List ccList;
	
	private IBaseExpression[] columnExprArray;
	
	private int[] columnIndexArray;
	
	private boolean isPrepared;
	protected static Logger logger = Logger.getLogger( ComputedColumnHelper.class.getName( ) );