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
resultSetCCList );
		this.currentModel = TransformationConstants.DATA_SET_MODEL;
		this.allCC = new ArrayList( );
		this.allCC.addAll( dataSetCCList );
		this.allCC.addAll( resultSetCCList );
	}
	/**
	 * 
	 * @return
	 */
	private ComputedColumnHelperInstance getCurrentInstance( )
	{
		if ( this.currentModel == TransformationConstants.DATA_SET_MODEL )
			return this.dataSetInstance;
		else if ( this.currentModel == TransformationConstants.RESULT_SET_MODEL )
			return this.resultSetInstance;
		return null;
	}
	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.birt.data.engine.odi.IResultObjectEvent#process(org.eclipse.birt.data.engine.odi.IResultObject,
	 *      int)
	 */
	public boolean process( IResultObject resultObject, int rowIndex )
			throws DataException
	{
		if ( this.getCurrentInstance( ) != null )
			return this.getCurrentInstance( ).process( resultObject, rowIndex );
		else