How to use

preDetach

method

in

javax.jdo.listener.DetachLifecycleListener

public void preDetach(Object pc)
{
  Iterator iter = listeners.iterator();
  while (iter.hasNext())
  {
    LifecycleListenerForClass listener = (LifecycleListenerForClass) iter.next();
    if (listener.forClass(pc.getClass()) && listener.getListener() instanceof DetachLifecycleListener)
    {
      ((DetachLifecycleListener)listener.getListener()).preDetach(new InstanceLifecycleEvent(pc, InstanceLifecycleEvent.DETACH, null));
    }
  }
  if (pc instanceof DetachCallback)
  {
    ((DetachCallback) pc).jdoPreDetach();
  }        
}

((DetachLifecycleListener)l).preDetach(
    new InstanceLifecycleEvent(src, InstanceLifecycleEvent.DETACH, src));

/**
 * Callback before the object is detached.
 * @param pc The Object
 */
public void preDetach(Object pc)
{
  for (LifecycleListenerForClass listener : getListenersWorkingCopy())
  {
    if (listener.forClass(pc.getClass()) && listener.getListener() instanceof DetachLifecycleListener)
    {
      ((DetachLifecycleListener)listener.getListener()).preDetach(new InstanceLifecycleEvent(pc, InstanceLifecycleEvent.DETACH, null));
    }
  }
  if (pc instanceof DetachCallback)
  {
    try
    {
      ((DetachCallback) pc).jdoPreDetach();
    }
    catch (Exception e)
    {
      throw new JDOUserCallbackException(Localiser.msg("025001", "jdoPreDetach"), e);
    }
  }        
}