Toplink Sessions and Caching

Question

Hi
I've got a external import on my DB, which updates the database without toplink. => cache is after update not uptodate.
So I've tried to run after every update of the DB:
getClientSession().getIdentityMapAccessor().initializeAllIdentityMaps();
(running on a oracle.toplink.sessions.Session - Object)
How can i refresh the cache for all Sessions, not only the actual ClientSession? Or is ther just one session (the actual ClientSession) for Toplink? The application is a webbased application with more then one user....
getClientSession is implemented as follow:
public Session getClientSession() {
try {
     mySessionBroker = (SessionBroker) SessionManager.getManager().getSession(TOPLINK_SESSION_NAME, AbstractService.class.getClassLoader());
     Session clientSession = (Session) mySessionBroker.acquireClientSessionBroker();
clientSession.setSessionLog( new Log4jSessionLog() );
     clientSession.setLogLevel(ClientSession.LOG_DEBUG);
//clientSession.logMessages();
     return clientSession;
catch (Exception e) {
throw new RuntimeException(new ClicToplinkException(e));
}

Answer 1

I realize this is an old thread so I apologize for dragging it back up.
I am trying to get a handle on the cache invalidation methods. We need to invalidate the cache based on sporadic manual updates and I would like to figure out the best methodology for doing this. I believe that the IdentityMapAccessor.invalidateAll() method is the one I need to use but can't get it to work. What follows is my test case. this.manager is an entity manager created in a setup method:
this.manager.getTransaction().begin();
this.user = new FormularyUser();
this.user.setSecurityUserID(12345L);
this.manager.persist(this.user);
this.manager.getTransaction().commit();
Session session = ((EntityManagerImpl)this.manager.getDelegate()).getServerSession();
session.getIdentityMapAccessor().invalidateAll();
// this should lookup from DB
FormularyUser copy2 = this.manager.find(FormularyUser.class,this.user.getUserPK());
assertTrue(copy2 != null);
assertTrue(copy2 != this.user);
It would be my assumption that the invalidated cache result would not be returned but as I traced through the code I noticed this comment:
'Override the getFromIdentityMapWithDeferredLock method on the session to ensure that invalidated objects are always returned since this is a UnitOfWork'
Does this mean because I'm still in the same unit of work that I will get invalid objects back? I would assume that because I had committed the transaction that I would be in a new UnitOfWork. Can someone point out where I'm making the wrong assumptions or what I'm doing wrong?
Thanks,
Drew