@ApplicationScoped hence forth it is.
Thanks
Pieter
On 08/07/2011 09:31, Gerhard Petracek wrote:
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
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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
