[jboss-jira] [JBoss JIRA] Created: (JBAS-5201) EJB2 Entity with cache invalidation fails to deploy with NPE

[Brian Stansberry (JIRA)]

EJB2 Entity with cache invalidation fails to deploy with NPE
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                 Key: JBAS-5201
                 URL: http://jira.jboss.com/jira/browse/JBAS-5201
             Project: JBoss Application Server
          Issue Type: Bug
      Security Level: Public (Everyone can see)
          Components: EJB2
    Affects Versions:  JBossAS-5.0.0.Beta3
            Reporter: Brian Stansberry
         Assigned To: Brian Stansberry
             Fix For: JBossAS-5.0.0.CR1


An entity with cache invalidation configured will fail to deploy.  This is the cause of the failing o.j.t.cluster.multicfg.ejb2.test.CacheInvalidationUnitTestCase.

Example bean config:

<entity>
         <ejb-name>cif_CachedEntityPK</ejb-name>
         <configuration-name>Standard CMP 2.x EntityBean with cache invalidation</configuration-name>
         <cache-invalidation>true</cache-invalidation>
</entity>

Failure:

2008-02-01 23:32:04,875 DEBUG [org.jboss.ejb.plugins.AbstractInstanceCache] Starting InvalidableEntityInstanceCache...
2008-02-01 23:32:04,878 DEBUG [org.jboss.ejb.EntityContainer] Starting failed jboss.j2ee:jndiName=local/cif_CachedEntityPK at 8115601,service=EJB
java.lang.NullPointerException
	at org.jboss.ejb.plugins.InvalidableEntityInstanceCache.start(InvalidableEntityInstanceCache.java:123)
	at org.jboss.ejb.EntityContainer.startService(EntityContainer.java:352)
	at org.jboss.system.ServiceMBeanSupport.jbossInternalStart(ServiceMBeanSupport.java:299)
	at org.jboss.system.ServiceMBeanSupport.jbossInternalLifecycle(ServiceMBeanSupport.java:245)
	at sun.reflect.GeneratedMethodAccessor4.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
	at java.lang.reflect.Method.invoke(Method.java:585)
	at org.jboss.mx.interceptor.ReflectedDispatcher.invoke(ReflectedDispatcher.java:157)
	at org.jboss.mx.server.Invocation.dispatch(Invocation.java:96)
	at org.jboss.mx.server.Invocation.invoke(Invocation.java:88)
	at org.jboss.mx.server.AbstractMBeanInvoker.invoke(AbstractMBeanInvoker.java:264)
	at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:668)
	at org.jboss.system.microcontainer.ServiceProxy.invoke(ServiceProxy.java:167)
	at $Proxy5.start(Unknown Source)
	at org.jboss.system.microcontainer.StartStopLifecycleAction.installAction(StartStopLifecycleAction.java:42)
	at org.jboss.system.microcontainer.StartStopLifecycleAction.installAction(StartStopLifecycleAction.java:37)
	at org.jboss.dependency.plugins.action.SimpleControllerContextAction.simpleInstallAction(SimpleControllerContextAction.java:62)
	at org.jboss.dependency.plugins.action.AccessControllerContextAction.install(AccessControllerContextAction.java:71)
	at org.jboss.dependency.plugins.AbstractControllerContextActions.install(AbstractControllerContextActions.java:51)
	at org.jboss.dependency.plugins.AbstractControllerContext.install(AbstractControllerContext.java:327)
	at org.jboss.system.microcontainer.ServiceControllerContext.install(ServiceControllerContext.java:255)
	at org.jboss.dependency.plugins.AbstractController.install(AbstractController.java:1309)
	at org.jboss.dependency.plugins.AbstractController.incrementState(AbstractController.java:734)
	at org.jboss.dependency.plugins.AbstractController.resolveContexts(AbstractController.java:862)
	at org.jboss.dependency.plugins.AbstractController.resolveContexts(AbstractController.java:784)
	at org.jboss.dependency.plugins.AbstractController.change(AbstractController.java:622)
	at org.jboss.dependency.plugins.AbstractController.change(AbstractController.java:411)
	at org.jboss.system.ServiceController.doChange(ServiceController.java:659)
	at org.jboss.system.ServiceController.start(ServiceController.java:431)
        .....

Problem is JBossEntityMetaData.getCacheInvalidationConfig() can return null if jobss.xml doesn't include a cache-invalidation-config element; in 4.x it wouldn't because a default value would be set.

Likely solution is either 1) to add a JBossEntityMetaData.determineCacheInvalidationConfig() method or 2) just lazy create a default config in JBossEntityMetaData.getCacheInvalidationConfig().  The latter is a simpler solution; the former is used elsewhere when there is a need to merge metadata from a <container-configuration/>, but there is no cache invalidation configuration in <container-configuration/>.

Either way, this will require a new jboss-metadata release.

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