Row level validation for Master-Detail form

Question

OA JDeveloper 9i (RUP5) 9.0.3.5 (Build 1453)
I have a form which is based on a master detail relationship.
- For each employees details (Advancetable) based on a EO (AbsenceInputsEO)
- For each employee you can add one or more allowances records (AdvanceTable) VO (AbsenceInputsVO)
Both the above VO and EO is based on the same table (XHR_BWCD_KRONOS_INTERFACE)
How do stop a user from selecting (radio button) the next employee in an advance table (master level), it the the records they entered at the detail level for the previous employee is not valid?
I used the the same validation method I used for the "APPLY" event to validate the records entered at detail level
to the "EmployeeSelect" event, but the error message showed only after the new employee has been selected. Thus the error message that is displayed does not relate to the employee record selected at that stage.
How do I prevent the user from selecting the next employee in the Master(Advancetable) if the records in the Detail(AdvanceTable) is not valid?

Answer 1

Thanks for you help,
Where able to reset the "SelectFlag" for the employee the error related to, but now I endup with two radio buttons being selected. One for the employee which the error relates to and one for the employee which triggered the validation when user navigated away from the current employee record.
I need to be able to set the attribute "SelectFlag" for any other employee selected in the master record to "N", before the error is thrown. I do not seem to be able to access the newly selected employee record to set the "SelectFlag" to "N" as I only have access to the currentrow SelectFlag in the processFormData.
It looks to be if I can only access the new selected employee in the processFormRequest(OAPageContext pageContext, OAWebBean webBean), but I never get to this method as the error message stop processing in the processFormData().
I have the following code in the processFormData(OAPageContext pageContext, OAWebBean webBean)
if ("EmployeeSelect".equals(event))
if (!IsValid(pageContext,am,true,AsgJobName,EmpStartDate.toString()))
// oracle.jbo.Row ValidationRow = vo.getFirstFilteredRow("SelectFlag", "Y");
// Set flag for employee record with error
Row [] rows = vo.getFilteredRows("SelectFlag", "Y");
// getFilteredRows returns a zero-length array if it finds no matches.
if ((rows != null) && (rows.length > 0))
// Set the master row and get the unique identifier.
Row masterRow = rows[0];
am.findViewObject("EmployeeAbsenceDetailsVO1").getCurrentRow().setAttribute("SelectFlag","Y");
vo.setCurrentRow(masterRow);
// Unselect new Employee
throw new OAException(ErrorMessage, OARowValException.ERROR);
} // EmployeeSelect-Event
Question:
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Can I access the newly selected employee rows from the processFormData to reset the "SelectFlag" to "N" before I through the error message? I would like to be able to do this in the section I have marked "// ?????", before I throw the error. How would I do this?