[hibernate-dev] Getting notified when session factory is completely set up

[Davide D'Alto]

> Yes, that helps indeed. Implementing my validation routine in such an
observer works. I guess if needed, I even could implement support for the
suggested service contract in OGM with help of an observer.

In OGM, we used to have a SessionFactoryObserver but we removed it in favor
of the SessionFactoryServiceInitiator.
https://hibernate.atlassian.net/browse/OGM-299




On Tue, Feb 11, 2014 at 10:05 AM, Gunnar Morling <gunnar at hibernate.org>wrote:

> 2014/2/11 Hardy Ferentschik <hardy at hibernate.org>
>
> > Hi,
> >
> > not sure whether this could work in your use case, but in Search we use a
> > SessionFactoryObserver.
> > We register the observer in Integrator#integrate with the
> > SessionFactoryImplementor.
> > Once the SessionFactory is completely build you get a callback into
> > SessionFactoryObserver#sessionFactoryCreated().
> >
> > In Search we had the case that we did not want to complete bootstrapping
> > at the integrator phase. Instead we defer
> > this until the SessionFactory is completely build.
> >
> > Hope it helps.
> >
>
> Yes, that helps indeed. Implementing my validation routine in such an
> observer works. I guess if needed, I even could implement support for the
> suggested service contract in OGM with help of an observer.
>
> Thanks!
>
>
> >
> > --Hardy
> >
> >
> >
> > On 11 Jan 2014, at 09:38, Gunnar Morling <gunnar at hibernate.org> wrote:
> >
> > > Hi,
> > >
> > > Is there a way for services (living in the SF-scoped registry) to get
> > > notified when the session factory has been set up and perform some
> action
> > > using that completely initialized factory?
> > >
> > > Upon invocation of initiateService() of SessionFactoryServiceInitiator
> > > implementations, the passed factory is still under construction (the
> call
> > > originates from SessionFactoryImpl<init>), so I can't access all
> members.
> > > The same holds true for the StartStoppable contract in OGM which also
> > sees
> > > a session factory under construction.
> > >
> > > Now I could store the passed reference in a field and execute the
> > required
> > > logic (some sort of validation) later on. I only have no meaningful
> hook
> > to
> > > trigger such action exactly once. So I'd have to manage a flag to make
> > sure
> > > the action is only performed once.
> > >
> > > Is there a better way to achieve this?
> > >
> > > Would it make sense to provide an additional contract to notify
> services
> > > about session factory lifecycle events:
> > >
> > >    public interface SessionFactoryLifecycleAware extends Service {
> > >
> > >        void onSessionFactoryLifecycleEvent(SessionFactoryImplementor
> sfi,
> > > Event event);
> > >
> > >        public enum Event { POST_START, PRE_STOP }
> > >    }
> > >
> > > ?
> > >
> > > Thanks,
> > >
> > > --Gunnar
> > > _______________________________________________
> > > hibernate-dev mailing list
> > > hibernate-dev at lists.jboss.org
> > > https://lists.jboss.org/mailman/listinfo/hibernate-dev
> >
> >
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