hi pieter, in the end you have to shutdown one of both scopes first. if you change the behaviour, you would have a problem the other way round. please always use @ApplicationScoped instead of @Singleton (in terms of cdi @Singleton isn't specified very clearly - it's part of jsr 330 which doesn't say a lot about it).
regards, gerhard http://www.irian.at Your JSF powerhouse - JSF Consulting, Development and Courses in English and German Professional Support for Apache MyFaces 2011/7/8 Pieter Martin <[email protected]> > Hi, > > I have an application scoped producer method together with a disposer which > sits in a @javax.inject.Singleton scoped class. > > @Singleton > public class DbProducer implements Serializable { > @ApplicationScopedDb > @Produces > @ApplicationScoped > public NakedGraph getApplicationScopedNakedGraph**() { > logger.info("produce Application scoped db"); > NakedGraph db = createNakedGraph(); > return db; > } > > public void closeApplicationScoped(@**Disposes @ApplicationScopedDb > NakedGraph db) { > logger.info("shutdown Application scoped db"); > if (db != null) { > db.shutdown(); > } > } > } > > On shutting down jetty I get the following exception. > > SEVERE: Exception thrown while destroying bean instance : > [Name:null,WebBeans Type:PRODUCERMETHOD,API Types:[com.tinkerpop.** > blueprints.pgm.Graph,java.io.**Serializable,org.nakeduml.** > tinker.runtime.NakedGraph,com.**tinkerpop.blueprints.pgm.** > IndexableGraph,java.lang.**Object,com.tinkerpop.**blueprints.pgm.** > TransactionalGraph],**Qualifiers:[javax.enterprise.** > inject.Any,org.nakeduml.**tinker.runtime.**ApplicationScopedDb]] > java.lang.NullPointerException > at org.apache.webbeans.component.**ProducerMethodBean.**disposeDefault( > **ProducerMethodBean.java:346) > at org.apache.webbeans.component.**ProducerMethodBean.dispose(** > ProducerMethodBean.java:306) > at org.apache.webbeans.component.**ProducerMethodBean.** > destroyInstance(**ProducerMethodBean.java:298) > at org.apache.webbeans.component.**AbstractOwbBean.** > destroyCreatedInstance(**AbstractOwbBean.java:277) > at org.apache.webbeans.portable.**creation.AbstractProducer.** > dispose(AbstractProducer.java:**91) > at org.apache.webbeans.component.**InjectionTargetWrapper.**dispose(** > InjectionTargetWrapper.java:**116) > at org.apache.webbeans.component.**AbstractOwbBean.destroy(** > AbstractOwbBean.java:242) > at org.apache.webbeans.context.**AbstractContext.**destroyInstance(** > AbstractContext.java:257) > at org.apache.webbeans.context.**AbstractContext.destroy(** > AbstractContext.java:279) > at org.apache.webbeans.web.**context.WebContextsService.** > destroyApplicationContext(**WebContextsService.java:485) > at org.apache.webbeans.web.**context.WebContextsService.** > endContext(WebContextsService.**java:200) > at org.apache.webbeans.web.**context.WebContextsService.** > destroy(WebContextsService.**java:155) > at org.apache.webbeans.lifecycle.**AbstractLifeCycle.**stopApplication( > **AbstractLifeCycle.java:149) > at org.apache.webbeans.web.**lifecycle.**WebContainerLifecycle.** > stopApplication(**WebContainerLifecycle.java:87) > at org.apache.webbeans.servlet.**WebBeansConfigurationListener.** > contextDestroyed(**WebBeansConfigurationListener.**java:96) > at org.eclipse.jetty.server.**handler.ContextHandler.doStop(** > ContextHandler.java:679) > at org.eclipse.jetty.servlet.**ServletContextHandler.doStop(** > ServletContextHandler.java:**143) > at org.eclipse.jetty.webapp.**WebAppContext.doStop(** > WebAppContext.java:473) > at org.eclipse.jetty.util.**component.AbstractLifeCycle.** > stop(AbstractLifeCycle.java:**83) > at org.eclipse.jetty.server.**handler.HandlerCollection.** > doStop(HandlerCollection.java:**245) > at org.eclipse.jetty.util.**component.AbstractLifeCycle.** > stop(AbstractLifeCycle.java:**83) > at org.eclipse.jetty.server.**handler.HandlerWrapper.doStop(** > HandlerWrapper.java:101) > at org.eclipse.jetty.server.**Server.doStop(Server.java:319) > at org.eclipse.jetty.util.**component.AbstractLifeCycle.** > stop(AbstractLifeCycle.java:**83) > at org.nakeduml.jetty.StartJetty$**MonitorThread.run(StartJetty.** > java:92) > > > Some investigation shows that the base exception is a > > "new ContextNotActiveException("**WebBeans context with scope type > annotation @" + scopeType.getSimpleName() + " does not exist within current > thread");" > > This exception however gets swallowed by the above exception that is thrown > in the finally part of ProducerMethodBean.**disposeDefault. > The scope that is not active is javax.inject.Singleton > > I subsequently replaced @Singleton with @ApplicationScope and then > everything works. > > Should @Singleton also have worked and when should one use which > annotation? > > Thanks > Pieter >
