[rules-users] Drools Flow Events Not Working

Mauricio Salatino salaboy at gmail.com
Fri Sep 24 11:37:46 EDT 2010 

hmm looks weird.. can you debug and review if the process is in the
NodeInstance that it's supposed to be?


On Fri, Sep 24, 2010 at 12:25 PM, jawa <agohar at gmail.com> wrote:

>
> Thanks mate
>
> It throws NullPointerException. Here is what I do. I start process and it
> stops at an AND node waiting for event to complete. The  process is backed
> up by JPA and is stored in db. Then I modify my test class and instead of
> creating session i load existing session. For example when i run my last
> test first time, it created a new session in db with id 18 and new process
> in db with id 24. So I use this code:
>
>
>                StatefulKnowledgeSession session =
> JPAKnowledgeService.loadStatefulKnowledgeSession(18,knowledgeBase, null,
> environment);
>                WorkItemManager manager = session.getWorkItemManager();
>                manager.registerWorkItemHandler("Human Task", new
> MyWorkItemHandler(true));
>
>                 ProcessInstance p = session.getProcessInstance(24);
>                System.out.println("Proc Found -> " + p.getClass());
>                 if (p != null &&
> p.getState()==ProcessInstance.STATE_ACTIVE)
>                {
>
>                         p.signalEvent("TestEvent", null);
>                }
>
> The debug statement above displays "Proc Found -> class
> org.drools.ruleflow.instance.RuleFlowProcessInstance"
>
> And I get exception:
>
> 15:41:29,528 ERROR [STDERR] java.lang.NullPointerException
> 15:41:29,528 ERROR [STDERR]     at
>
> org.drools.process.instance.impl.ProcessInstanceImpl.getProcess(ProcessInstanceImpl.java:67)
> 15:41:29,529 ERROR [STDERR]     at
>
> org.drools.workflow.instance.impl.WorkflowProcessInstanceImpl.getWorkflowProcess(WorkflowProcessInstanceImpl.java:185)
> 15:41:29,529 ERROR [STDERR]     at
>
> org.drools.workflow.instance.impl.WorkflowProcessInstanceImpl.signalEvent(WorkflowProcessInstanceImpl.java:346)
> 15:41:29,529 ERROR [STDERR]     at
> com.my.poc.PocFlowServiceImpl.processFlow(PocFlowServiceImpl.java:117)
> 15:41:29,529 ERROR [STDERR]     at
> sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> 15:41:29,529 ERROR [STDERR]     at
>
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
> 15:41:29,529 ERROR [STDERR]     at
>
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
> 15:41:29,529 ERROR [STDERR]     at
> java.lang.reflect.Method.invoke(Method.java:597)
> 15:41:29,529 ERROR [STDERR]     at
>
> org.jboss.aop.joinpoint.MethodInvocation.invokeTarget(MethodInvocation.java:122)
> 15:41:29,529 ERROR [STDERR]     at
>
> org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:111)
> 15:41:29,529 ERROR [STDERR]     at
>
> org.jboss.ejb3.EJBContainerInvocationWrapper.invokeNext(EJBContainerInvocationWrapper.java:69)
> 15:41:29,529 ERROR [STDERR]     at
>
> org.jboss.ejb3.interceptors.aop.InterceptorSequencer.invoke(InterceptorSequencer.java:73)
> 15:41:29,529 ERROR [STDERR]     at
>
> org.jboss.ejb3.interceptors.aop.InterceptorSequencer.aroundInvoke(InterceptorSequencer.java:59)
> 15:41:29,531 ERROR [STDERR]     at
> sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> 15:41:29,531 ERROR [STDERR]     at
>
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
> 15:41:29,531 ERROR [STDERR]     at
>
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
> 15:41:29,531 ERROR [STDERR]     at
> java.lang.reflect.Method.invoke(Method.java:597)
> 15:41:29,531 ERROR [STDERR]     at
> org.jboss.aop.advice.PerJoinpointAdvice.invoke(PerJoinpointAdvice.java:174)
> 15:41:29,531 ERROR [STDERR]     at
>
> org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)
> 15:41:29,531 ERROR [STDERR]     at
>
> org.jboss.ejb3.interceptors.aop.InvocationContextInterceptor.fillMethod(InvocationContextInterceptor.java:72)
> 15:41:29,532 ERROR [STDERR]     at
>
> org.jboss.aop.advice.org.jboss.ejb3.interceptors.aop.InvocationContextInterceptor_z_fillMethod_30161834.invoke(InvocationContextInterceptor_z_fillMethod_30161834.java)
> 15:41:29,532 ERROR [STDERR]     at
>
> org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)
> 15:41:29,532 ERROR [STDERR]     at
>
> org.jboss.ejb3.interceptors.aop.InvocationContextInterceptor.setup(InvocationContextInterceptor.java:88)
> 15:41:29,532 ERROR [STDERR]     at
>
> org.jboss.aop.advice.org.jboss.ejb3.interceptors.aop.InvocationContextInterceptor_z_setup_30161834.invoke(InvocationContextInterceptor_z_setup_30161834.java)
> 15:41:29,532 ERROR [STDERR]     at
>
> org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)
> 15:41:29,532 ERROR [STDERR]     at
>
> org.jboss.ejb3.connectionmanager.CachedConnectionInterceptor.invoke(CachedConnectionInterceptor.java:62)
> 15:41:29,575 ERROR [STDERR]     at
>
> org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)
> 15:41:29,575 ERROR [STDERR]     at
>
> org.jboss.ejb3.entity.TransactionScopedEntityManagerInterceptor.invoke(TransactionScopedEntityManagerInterceptor.java:56)
> 15:41:29,575 ERROR [STDERR]     at
>
> org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)
> 15:41:29,576 ERROR [STDERR]     at
>
> org.jboss.ejb3.AllowedOperationsInterceptor.invoke(AllowedOperationsInterceptor.java:47)
> 15:41:29,576 ERROR [STDERR]     at
>
> org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)
> 15:41:29,576 ERROR [STDERR]     at
>
> org.jboss.ejb3.tx.StatelessBMTInterceptor.handleInvocation(StatelessBMTInterceptor.java:106)
> 15:41:29,576 ERROR [STDERR]     at
> org.jboss.ejb3.tx.BMTInterceptor.invoke(BMTInterceptor.java:55)
> 15:41:29,576 ERROR [STDERR]     at
>
> org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)
> 15:41:29,576 ERROR [STDERR]     at
>
> org.jboss.ejb3.stateless.StatelessInstanceInterceptor.invoke(StatelessInstanceInterceptor.java:68)
> 15:41:29,576 ERROR [STDERR]     at
>
> org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)
> 15:41:29,576 ERROR [STDERR]     at
> org.jboss.ejb3.tx.NullInterceptor.invoke(NullInterceptor.java:42)
> 15:41:29,576 ERROR [STDERR]     at
>
> org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)
> 15:41:29,576 ERROR [STDERR]     at
>
> org.jboss.aspects.tx.TxPropagationInterceptor.invoke(TxPropagationInterceptor.java:76)
> 15:41:29,576 ERROR [STDERR]     at
>
> org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)
> 15:41:29,576 ERROR [STDERR]     at
> org.jboss.ejb3.tx.NullInterceptor.invoke(NullInterceptor.java:42)
> 15:41:29,577 ERROR [STDERR]     at
>
> org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)
> 15:41:29,577 ERROR [STDERR]     at
>
> org.jboss.ejb3.security.Ejb3AuthenticationInterceptorv2.invoke(Ejb3AuthenticationInterceptorv2.java:186)
> 15:41:29,577 ERROR [STDERR]     at
>
> org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)
> 15:41:29,577 ERROR [STDERR]     at
>
> org.jboss.ejb3.ENCPropagationInterceptor.invoke(ENCPropagationInterceptor.java:41)
> 15:41:29,577 ERROR [STDERR]     at
>
> org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)
> 15:41:29,577 ERROR [STDERR]     at
>
> org.jboss.ejb3.BlockContainerShutdownInterceptor.invoke(BlockContainerShutdownInterceptor.java:67)
> 15:41:29,577 ERROR [STDERR]     at
>
> org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)
> 15:41:29,577 ERROR [STDERR]     at
>
> org.jboss.aspects.currentinvocation.CurrentInvocationInterceptor.invoke(CurrentInvocationInterceptor.java:67)
> 15:41:29,577 ERROR [STDERR]     at
>
> org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)
> 15:41:29,577 ERROR [STDERR]     at
>
> org.jboss.ejb3.stateless.StatelessContainer.dynamicInvoke(StatelessContainer.java:421)
> 15:41:29,577 ERROR [STDERR]     at
>
> org.jboss.ejb3.session.InvokableContextClassProxyHack._dynamicInvoke(InvokableContextClassProxyHack.java:53)
> 15:41:29,577 ERROR [STDERR]     at
> org.jboss.aop.Dispatcher.invoke(Dispatcher.java:91)
> 15:41:29,579 ERROR [STDERR]     at
>
> org.jboss.aspects.remoting.AOPRemotingInvocationHandler.invoke(AOPRemotingInvocationHandler.java:82)
> 15:41:29,579 ERROR [STDERR]     at
> org.jboss.remoting.ServerInvoker.invoke(ServerInvoker.java:891)
> 15:41:29,579 ERROR [STDERR]     at
>
> org.jboss.remoting.transport.socket.ServerThread.completeInvocation(ServerThread.java:744)
> 15:41:29,579 ERROR [STDERR]     at
>
> org.jboss.remoting.transport.socket.ServerThread.processInvocation(ServerThread.java:697)
> 15:41:29,579 ERROR [STDERR]     at
>
> org.jboss.remoting.transport.socket.ServerThread.dorun(ServerThread.java:524)
> 15:41:29,579 ERROR [STDERR]     at
> org.jboss.remoting.transport.socket.ServerThread.run(ServerThread.java:232)
>
> --
> View this message in context:
> http://drools-java-rules-engine.46999.n3.nabble.com/Drools-Flow-Events-Not-Working-tp1453738p1574659.html
> Sent from the Drools - User mailing list archive at Nabble.com.
> _______________________________________________
> rules-users mailing list
> rules-users at lists.jboss.org
> https://lists.jboss.org/mailman/listinfo/rules-users
>



-- 
 - CTO @ http://www.plugtree.com
 - MyJourney @ http://salaboy.wordpress.com
 - Co-Founder @ http://www.jbug.com.ar

 - Salatino "Salaboy" Mauricio -
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://lists.jboss.org/pipermail/rules-users/attachments/20100924/df460c4e/attachment.html

More information about the rules-users mailing list