[seam-issues] [JBoss JIRA] Commented: (SEAMFACES-42) IllegalProductException: WELD-000052 Cannot return null from a non-dependent producer method

From the line in the stack trace:

IllegalProductException: WELD-000052 Cannot return null from a non-dependent producer method -------------------------------------------------------------------------------------------- Key: SEAMFACES-42 URL: https://jira.jboss.org/browse/SEAMFACES-42 Project: Seam Faces Issue Type: Bug Components: Messages & i18n Affects Versions: 3.0.0.Alpha3 Environment: Glassfish 3.0.1, Weld 1.0.1-FINAL, Seam3 Faces 1.0-ALPHA3 Reporter: Brian Leathem Attachments: mavenproject.zip I created a Custom Exception handler to trap "NonexistentConversationException" exceptions as per Ed Burns howto: http://weblogs.java.net/blog/edburns/archive/2009/09/03/dealing-gracefull... The exception handler attempts to redirect the faces navigation: nav.handleNavigation(fc, null, "/workrequest/index.xhtml"); This results in the stack trace: org.jboss.weld.exceptions.IllegalProductException: WELD-000052 Cannot return null from a non-dependent producer method: org.jboss.weld.bean.ProducerMethod$1@32ac538c at org.jboss.weld.bean.AbstractProducerBean.checkReturnValue(AbstractProducerBean.java:255) at org.jboss.weld.bean.AbstractProducerBean.create(AbstractProducerBean.java:361) at org.jboss.weld.context.AbstractMapContext.get(AbstractMapContext.java:112) at org.jboss.weld.bean.proxy.ClientProxyMethodHandler.getProxiedInstance(ClientProxyMethodHandler.java:143) at org.jboss.weld.bean.proxy.ClientProxyMethodHandler.invoke(ClientProxyMethodHandler.java:100) at org.jboss.weld.util.CleanableMethodHandler.invoke(CleanableMethodHandler.java:43) at org.jboss.seam.faces.context.FlashContext_$$_javassist_785.put(FlashContext_$$_javassist_785.java) at org.jboss.seam.faces.status.MessagesAdapter.flushBeforeNavigate(MessagesAdapter.java:63) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at org.jboss.weld.util.reflection.SecureReflections$13.work(SecureReflections.java:304) at org.jboss.weld.util.reflection.SecureReflectionAccess.run(SecureReflectionAccess.java:54) at org.jboss.weld.util.reflection.SecureReflectionAccess.runAsInvocation(SecureReflectionAccess.java:163) at org.jboss.weld.util.reflection.SecureReflections.invoke(SecureReflections.java:298) at org.jboss.weld.introspector.jlr.WeldMethodImpl.invokeOnInstance(WeldMethodImpl.java:200) at org.jboss.weld.introspector.ForwardingWeldMethod.invokeOnInstance(ForwardingWeldMethod.java:59) at org.jboss.weld.injection.MethodInjectionPoint.invokeOnInstanceWithSpecialValue(MethodInjectionPoint.java:194) at org.jboss.weld.event.ObserverMethodImpl.sendEvent(ObserverMethodImpl.java:241) at org.jboss.weld.event.ObserverMethodImpl.notify(ObserverMethodImpl.java:216) at org.jboss.weld.manager.BeanManagerImpl.notifyObservers(BeanManagerImpl.java:654) at org.jboss.weld.manager.BeanManagerImpl.fireEvent(BeanManagerImpl.java:647) at org.jboss.weld.manager.BeanManagerImpl.fireEvent(BeanManagerImpl.java:641) at org.jboss.seam.faces.event.PreNavigateEventProducer.handleNavigation(PreNavigateEventProducer.java:65) at ca.triumf.mis.qms.workrequest.jsf.exception.NonexistentConversationExceptionHandler.handle(NonexistentConversationExceptionHandler.java:48) at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:119) at com.sun.faces.lifecycle.RestoreViewPhase.doPhase(RestoreViewPhase.java:110) at com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:118) at javax.faces.webapp.FacesServlet.service(FacesServlet.java:312) at org.apache.catalina.core.StandardWrapper.service(StandardWrapper.java:1523) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:279) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:188) at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:641) at com.sun.enterprise.web.WebPipeline.invoke(WebPipeline.java:97) at com.sun.enterprise.web.PESessionLockingStandardPipeline.invoke(PESessionLockingStandardPipeline.java:85) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:185) at org.apache.catalina.connector.CoyoteAdapter.doService(CoyoteAdapter.java:325) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:226) at com.sun.enterprise.v3.services.impl.ContainerMapper.service(ContainerMapper.java:165) at com.sun.grizzly.http.ProcessorTask.invokeAdapter(ProcessorTask.java:791) at com.sun.grizzly.http.ProcessorTask.doProcess(ProcessorTask.java:693) at com.sun.grizzly.http.ProcessorTask.process(ProcessorTask.java:954) at com.sun.grizzly.http.DefaultProtocolFilter.execute(DefaultProtocolFilter.java:170) at com.sun.grizzly.DefaultProtocolChain.executeProtocolFilter(DefaultProtocolChain.java:135) at com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:102) at com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:88) at com.sun.grizzly.http.HttpProtocolChain.execute(HttpProtocolChain.java:76) at com.sun.grizzly.ProtocolChainContextTask.doCall(ProtocolChainContextTask.java:53) at com.sun.grizzly.SelectionKeyContextTask.call(SelectionKeyContextTask.java:57) at com.sun.grizzly.ContextTask.run(ContextTask.java:69) at com.sun.grizzly.util.AbstractThreadPool$Worker.doWork(AbstractThreadPool.java:330) at com.sun.grizzly.util.AbstractThreadPool$Worker.run(AbstractThreadPool.java:309) at java.lang.Thread.run(Thread.java:619) It seems as if the seam faces module is trying to put messages in the flash context, and this is causing a weld exception to be thrown. I hope I'm reading this as a Seam3 Faces error correctly :P Thanks as always, Brian