[SOLVED] ADF BC : event mechanism

Question

hi
I'm not sure what I am looking for, but I was wondering if ADF BC had some kind of "event mechanism" to "notify the view of changes in the model"?
For example, what if I would like to be "notified" (in my view implementation), if a change to some SCOTT.EMP.SAL value would cause the average SCOTT.EMP.SAL value to be above some limit?
Because ADF BC has this "Active Data Model" implementation, it looks like some "event mechanism" could fit in.
For things that "go wrong" there is already a "Bundled Exception Mode" feature in place, but maybe a general "event mechanism" could be similar.
many thanks
Jan Vervecken

Answer 1

Thanks for your reply Steve.
Based on both your sample applications 98 and 101 I have been able to create an example application that has some kind of "model to view event mechanism":
http://verveja.footsteps.be/~verveja/files/oracle/ADFEventMechanismStuff-v0.05.zip
It enables me to "react" in the view implementation to "events in the model", like this:
public class EmpViewAllPanel
     extends JPanel
     implements JUPanel
     private void myInit()
          JboWarningEventBindingContainer vJboWarningEventBindingContainer =
               (JboWarningEventBindingContainer)panelBinding;
          vJboWarningEventBindingContainer.addJboWarningEventListener(
               new JboWarningEventListener()
                    public void handleJboWarningEvent(JboWarningEvent pJboWarningEvent)
                         myHandleJboWarningEvent(pJboWarningEvent);     
     public void myHandleJboWarningEvent(JboWarningEvent pJboWarningEvent)
          if (pJboWarningEvent instanceof AverageSalEvent)
               AverageSalEvent vAverageSalEvent = (AverageSalEvent)pJboWarningEvent;
               fMyStatusPanel.setAverageSalAlert(
                    !vAverageSalEvent.isAverageSalBelowLimit());
          else if (pJboWarningEvent instanceof CreateEmpEvent)
               CreateEmpEvent vCreateEmpEvent = (CreateEmpEvent)pJboWarningEvent;
               fMyStatusPanel.setEmpCreateDate(vCreateEmpEvent.getCreateDate());
}All suggestions for improvement are welcome.
I also wonder if there would be an alternative that does not require a DCBindingContainer subclass as a JboExceptionHandler implementation?
regards
Jan Vervecken