[jbossseam-issues] [JBoss JIRA] Resolved: (JBSEAM-1264) Session preDestroyContext Event causing exception

Session preDestroyContext Event causing exception ------------------------------------------------- Key: JBSEAM-1264 URL: http://jira.jboss.com/jira/browse/JBSEAM-1264 Project: JBoss Seam Issue Type: Bug Affects Versions: 1.2.1.GA Reporter: Keith Naas Assigned To: Pete Muir Priority: Minor Fix For: 1.3.0.BETA1 This is probably the wrong thing to do for what we need...but we did encounter this interesting error. We registered an event on the preDestroyContext.SESSION where a stateless EJB is called to delete some items from a database. <event type="org.jboss.seam.preDestroyContext.SESSION"> <action expression="#{service.releaseDocuments}"/> </event> When EJBs are passivated, this event appears to be kicking off. But since the FacesContext is null, we get a NullPointerException from com.sun.faces.application.MethodBindingMethodExpressionAdapter.invoke. It looks like the FaceContext is null when it is called through the passivate interceptor, but it is calling the previous cachedMethodBinding which was generated when the FaceContext was not null. Seems like the method should be changed to something like this. private javax.faces.el.MethodBinding getFacesMethodBinding(Class[] types, Object... args) { FacesContext context = FacesContext.getCurrentInstance(); if (cachedMethodBinding==null || (context == null && !(cachedMethodBinding instanceof UnifiedELMethodBinding))) { cachedMethodBinding = context==null ? new UnifiedELMethodBinding(expression, types) : context.getApplication().createMethodBinding(expression, types); } return cachedMethodBinding; } 11:54:08,526 ERROR [SimpleStatefulCache] problem passivation thread java.lang.RuntimeException: java.lang.NullPointerException: FacesConext -> null at org.jboss.ejb3.interceptor.LifecycleInterceptorHandler.prePassivate(LifecycleInterceptorHandler.java:160) at org.jboss.ejb3.stateful.StatefulContainer.invokePrePassivate(StatefulContainer.java:351) at org.jboss.ejb3.stateful.StatefulBeanContext.prePassivate(StatefulBeanContext.java:178) at org.jboss.ejb3.cache.simple.StatefulSessionFilePersistenceManager.passivateSession(StatefulSessionFilePersistenceManager.java:328) at org.jboss.ejb3.cache.simple.SimpleStatefulCache.passivate(SimpleStatefulCache.java:194) at org.jboss.ejb3.cache.simple.SimpleStatefulCache$SessionTimeoutTask.run(SimpleStatefulCache.java:129) Caused by: java.lang.NullPointerException: FacesConext -> null at com.sun.faces.application.MethodBindingMethodExpressionAdapter.invoke(MethodBindingMethodExpressionAdapter.java:72) at org.jboss.seam.core.Expressions$2.invoke(Expressions.java:148) at org.jboss.seam.core.Events.raiseEvent(Events.java:63) at org.jboss.seam.contexts.Contexts.destroy(Contexts.java:215) at org.jboss.seam.contexts.Lifecycle.endCall(Lifecycle.java:72) at org.jboss.seam.intercept.RootInterceptor.invoke(RootInterceptor.java:117) at org.jboss.seam.intercept.RootInterceptor.invokeAndHandle(RootInterceptor.java:81) at org.jboss.seam.intercept.SessionBeanInterceptor.prePassivate(SessionBeanInterceptor.java:59) at sun.reflect.GeneratedMethodAccessor1059.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:585) at org.jboss.ejb3.interceptor.LifecycleInvocationContextImpl.proceed(LifecycleInvocationContextImpl.java:131) at org.jboss.ejb3.interceptor.LifecycleInterceptorHandler.prePassivate(LifecycleInterceptorHandler.java:156) ... 5 more