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
}
						value = DataTypeUtil.convert( value,
								resultClass.getFieldValueClass( columnIndexArray[i] ) );
					}
					catch ( BirtException e )
					{
						String fieldName = resultClass.getFieldName( columnIndexArray[i] );
						if ( fieldName != null
								&& fieldName.startsWith( "_{$TEMP_" ) )
						{
							
							throw new DataException( ResourceConstants.WRONG_DATA_TYPE_SCRIPT_RESULT,
									new Object[]{
											resultClass.getFieldValueClass( columnIndexArray[i] )
													.getName( ),
											value == null ? value
													: value.toString( ),
									} );
						}
						
						throw new DataException( ResourceConstants.WRONG_DATA_TYPE_COMPUTED_COLUMN,
								new Object[]{
										resultClass.getFieldName( columnIndexArray[i] ),
										resultClass.getFieldValueClass( columnIndexArray[i] )
												.getName( ),
										value == null ? value
												: value.toString( ),
								} );
					}
					resultObject.setCustomFieldValue( columnIndexArray[i],