Re: [rules-users] Drools Flow Events Not Working

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-No... 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