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https://issues.apache.org/jira/browse/ARIES-703?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13199740#comment-13199740
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Timothy Ward commented on ARIES-703:
------------------------------------
It's not possible to absolutely solve this problem. If the bean is created
through the blueprint API, or if it gets injected into another bean that refers
to it by a class, or if it is exposed as a service using a service interface
that is not a Java interface. I can however add support that means we only
proxy at the last possible second when we know what type(s) are required. As
long as you inject via interface this should solve your problem.
> JDKProxyManager cannot proxy blueprint beans
> --------------------------------------------
>
> Key: ARIES-703
> URL: https://issues.apache.org/jira/browse/ARIES-703
> Project: Aries
> Issue Type: Bug
> Components: Blueprint
> Environment: Glassfish 3.1
> Reporter: Balazs Zsoldos
> Assignee: Timothy Ward
>
> When there is no ASM between the bundles and aries proxy is installed the
> default proxy manager is JDKProxyManager. When there is a bean in a blueprint
> fragment that has for example tx:transaction inside creating the
> transactional proxy fails with the following stacktrace:
> [#|2011-07-06T14:29:24.542+0200|SEVERE|glassfish3.1|org.apache.aries.blueprint.container.BlueprintContainerImpl|_ThreadID=27;_ThreadName=Thread-1;|Unable
> to start blueprint container for bundle
> biz.everit.audit.persistence.biz.everit.audit.persistence.impl
> org.osgi.service.blueprint.container.ComponentDefinitionException: Unable to
> create proxy for bean eventPersistenceImpl in bundle
> biz.everit.audit.persistence.biz.everit.audit.persistence.impl version
> 0.1.0.SNAPSHOT
> at
> org.apache.aries.blueprint.container.BeanRecipe.addInterceptors(BeanRecipe.java:695)
> at
> org.apache.aries.blueprint.container.BeanRecipe.internalCreate(BeanRecipe.java:730)
> at
> org.apache.aries.blueprint.di.AbstractRecipe$1.call(AbstractRecipe.java:71)
> at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
> at java.util.concurrent.FutureTask.run(FutureTask.java:138)
> at
> org.apache.aries.blueprint.di.AbstractRecipe.create(AbstractRecipe.java:79)
> at
> org.apache.aries.blueprint.di.RefRecipe.internalCreate(RefRecipe.java:60)
> at
> org.apache.aries.blueprint.di.AbstractRecipe.create(AbstractRecipe.java:98)
> at
> org.apache.aries.blueprint.container.BlueprintRepository.createInstances(BlueprintRepository.java:220)
> at
> org.apache.aries.blueprint.container.BlueprintRepository.createInstance(BlueprintRepository.java:205)
> at
> org.apache.aries.blueprint.container.BlueprintRepository.create(BlueprintRepository.java:144)
> at
> org.apache.aries.blueprint.container.ServiceRecipe.createRecipe(ServiceRecipe.java:398)
> at
> org.apache.aries.blueprint.container.ServiceRecipe.createService(ServiceRecipe.java:271)
> at
> org.apache.aries.blueprint.container.ServiceRecipe.internalGetService(ServiceRecipe.java:243)
> at
> org.apache.aries.blueprint.container.ServiceRecipe.getService(ServiceRecipe.java:320)
> at
> org.apache.aries.blueprint.container.ServiceRecipe$TriggerServiceFactory.getService(ServiceRecipe.java:465)
> at
> org.apache.felix.framework.ServiceRegistrationImpl.getFactoryUnchecked(ServiceRegistrationImpl.java:310)
> at
> org.apache.felix.framework.ServiceRegistrationImpl.getService(ServiceRegistrationImpl.java:221)
> at
> org.apache.felix.framework.ServiceRegistry.getService(ServiceRegistry.java:297)
> at org.apache.felix.framework.Felix.getService(Felix.java:3014)
> at
> org.apache.felix.framework.BundleContextImpl.getService(BundleContextImpl.java:329)
> at
> org.jvnet.hk2.osgiadapter.HK2Main$HK2ServiceTrackerCustomizer.addingService(HK2Main.java:260)
> at
> org.osgi.util.tracker.ServiceTracker$Tracked.customizerAdding(ServiceTracker.java:896)
> at
> org.osgi.util.tracker.AbstractTracked.trackAdding(AbstractTracked.java:261)
> at org.osgi.util.tracker.AbstractTracked.track(AbstractTracked.java:233)
> at
> org.osgi.util.tracker.ServiceTracker$Tracked.serviceChanged(ServiceTracker.java:840)
> at
> org.apache.felix.framework.util.EventDispatcher.invokeServiceListenerCallback(EventDispatcher.java:871)
> at
> org.apache.felix.framework.util.EventDispatcher.fireEventImmediately(EventDispatcher.java:733)
> at
> org.apache.felix.framework.util.EventDispatcher.fireServiceEvent(EventDispatcher.java:662)
> at org.apache.felix.framework.Felix.fireServiceEvent(Felix.java:3769)
> at org.apache.felix.framework.Felix.access$000(Felix.java:80)
> at org.apache.felix.framework.Felix$2.serviceChanged(Felix.java:722)
> at
> org.apache.felix.framework.ServiceRegistry.registerService(ServiceRegistry.java:107)
> at org.apache.felix.framework.Felix.registerService(Felix.java:2854)
> at
> org.apache.felix.framework.BundleContextImpl.registerService(BundleContextImpl.java:251)
> at
> org.apache.aries.blueprint.container.BlueprintContainerImpl.registerService(BlueprintContainerImpl.java:408)
> at
> org.apache.aries.blueprint.container.ServiceRecipe.register(ServiceRecipe.java:187)
> at
> org.apache.aries.blueprint.container.BlueprintContainerImpl.registerServices(BlueprintContainerImpl.java:666)
> at
> org.apache.aries.blueprint.container.BlueprintContainerImpl.doRun(BlueprintContainerImpl.java:334)
> at
> org.apache.aries.blueprint.container.BlueprintContainerImpl.run(BlueprintContainerImpl.java:230)
> at
> java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:441)
> at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
> at java.util.concurrent.FutureTask.run(FutureTask.java:138)
> at
> java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:98)
> at
> java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:206)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
> at java.lang.Thread.run(Thread.java:662)
> Caused by: org.apache.aries.proxy.UnableToProxyException: The class
> biz.everit.audit.persistence.impl.EventPersistenceServiceImpl is not an
> interface and therefore a proxy cannot be generated.
> at
> org.apache.aries.proxy.impl.JdkProxyManager.getInterfaces(JdkProxyManager.java:43)
> at
> org.apache.aries.proxy.impl.JdkProxyManager.createNewProxy(JdkProxyManager.java:36)
> at
> org.apache.aries.proxy.impl.AbstractProxyManager.createDelegatingInterceptingProxy(AbstractProxyManager.java:75)
> at
> org.apache.aries.proxy.impl.AbstractProxyManager.createInterceptingProxy(AbstractProxyManager.java:53)
> at
> org.apache.aries.blueprint.container.BeanRecipe.addInterceptors(BeanRecipe.java:690)
> ... 47 more
> It will always happen as we have the following line in BeanRecepe:
> intercepted = BlueprintExtender.getProxyManager().createInterceptingProxy(b,
> ProxyUtils.asList(original.getClass()), original,
> new Collaborator(interceptorLookupKey, interceptors));
> That means that the interface list is the class of the bean itself that is
> cannot be an interface. In case of JDKProxy we should derive the interfaces
> that the bean implements and those interface classes should be passed.
> However at this level (BeanRecipe) we do not know about the proxy manager...
> The example blueprint file for this:
> <bean id="eventPersistenceImpl"
> class="biz.everit.audit.persistence.impl.EventPersistenceServiceImpl">
> <tx:transaction method="*" value="Required" />
> <jpa:context property="em"
> unitname="biz.everit.audit.persistence.entity" type="TRANSACTION" />
> </bean>
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