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

> I can "inject" the SF into a DatastoreProvider by having it implement said StartStoppable contract. But as pointed out before the SF is not yet completely initialized at this point. So I e.g. can't access the entity persisters. Isn't the SessionFactory already created by the time StartStoppable#startService is called? On Tue, Feb 11, 2014 at 11:26 AM, Gunnar Morling <gunnar(a)hibernate.org&gt;wrote: > 2014/2/11 Davide D'Alto <daltodavide(a)gmail.com&gt; > >> > 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 >> >> > But do we have a DatastoreProvider which actually makes use of the SF? > > I can "inject" the SF into a DatastoreProvider by having it implement > said StartStoppable contract. But as pointed out before the SF is not yet > completely initialized at this point. So I e.g. can't access the entity > persisters. > > I couldn't find any "real" implementation of StartStoppable (besides a > testing one); it might actually make sense to re-implement the support for > this contract using an observer, which would expose a fully-initialized SF > to such implementations. > > The problem I'm having atm. only relates to CouchDB, so for the time > being I think I'm going to add an observer just to this module. > > > >> >> >> On Tue, Feb 11, 2014 at 10:05 AM, Gunnar Morling <gunnar(a)hibernate.org&gt;wrote: >> >>> 2014/2/11 Hardy Ferentschik <hardy(a)hibernate.org&gt; >>> >>> > 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(a)hibernate.org&gt; >>> 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(a)lists.jboss.org >>> > > https://lists.jboss.org/mailman/listinfo/hibernate-dev >>> > >>> > >>> _______________________________________________ >>> hibernate-dev mailing list >>> hibernate-dev(a)lists.jboss.org >>> https://lists.jboss.org/mailman/listinfo/hibernate-dev >>> >> >> >