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Muliplt Ksessions | event is not getting dispatched to the StatefulKnowledgeSession
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created by <a href="https://community.jboss.org/people/ahmedza">Zahid Ahmed</a> in <i>jBPM</i> - <a href="https://community.jboss.org/message/808115#808115">View the full discussion</a>
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<div class="jive-rendered-content"><p>*<em>strong text</em>*What could be the problem if the task-completed event is not getting dispatched to the StatefulKnowledgeSession ?</p><p>For a new process-instance, I do</p><ul><li>create a new session  <p>register human-task local GenericHTWorkItemHandler</p><p>register custom event listeners</p><p>call <code>startProcess(processDefinitionId,parameters);</code></p></li></ul><p>It starts a new instance, creates the first human-task via the registered human-task-handler.</p><p>When I want to complete the human-task, I do</p><ul><li>restore the KnowledgeSession with <code>JPAKnowledgeService.loadStatefulKnowledgeSession(lastSessionId,kBase,null, env);</code>  <p>again register human-task local GenericHTWorkItemHandler</p><p>again register custom event listeners</p></li></ul><p>Then call taskService.completeTask, BUT the task-completed is not dispatched to the KnowledgeSession. And the process-flow is not happening</p><p>Should I not register the event listeners again ? Should I not register the work-item-handlers again ?</p><p><strong>Update 1</strong> Exception trace:</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p><code>07:52:09,618 ERROR [org.apache.catalina.core.ContainerBase.[jboss.web].[default-host].[/workflow-console].[rsservlet]] (http--0.0.0.0-8280-15) Servlet.service() for servlet rsservlet threw exception: java.lang.IllegalStateException: EntityManager is closed<br/>        at org.hibernate.ejb.AbstractEntityManagerImpl.joinTransaction(AbstractEntityManagerImpl.java:1158) [hibernate-entitymanager-4.0.1.Final.jar:4.0.1.Final]<br/>        at org.drools.container.spring.beans.persistence.DroolsSpringJpaManager.getApplicationScopedPersistenceContext(DroolsSpringJpaManager.java:89) [drools-spring-5.5.0.Final.jar:5.5.0.Final]<br/>        at org.drools.persistence.SingleSessionCommandService.execute(SingleSessionCommandService.java:350) [drools-persistence-jpa-5.5.0.Final.jar:5.5.0.Final]<br/>        at org.drools.command.impl.CommandBasedStatefulKnowledgeSession.getEnvironment(CommandBasedStatefulKnowledgeSession.java:478) [drools-core-5.5.0.Final.jar:5.5.0.Final]<br/>        at org.jbpm.process.workitem.wsht.GenericHTWorkItemHandler$TaskCompletedHandler.handleCompletedTask(GenericHTWorkItemHandler.java:260) [jbpm-human-task-core-5.4.0.Final.jar:5.4.0.Final]<br/>        at org.jbpm.process.workitem.wsht.GenericHTWorkItemHandler$TaskCompletedHandler.execute(GenericHTWorkItemHandler.java:234) [jbpm-human-task-core-5.4.0.Final.jar:5.4.0.Final]<br/>        at org.jbpm.task.service.local.LocalTaskService$SimpleEventTransport.trigger(LocalTaskService.java:329) [jbpm-human-task-core-5.4.0.Final.jar:5.4.0.Final]</code></p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>When reloading a session I am registering new HumanTaskWorkItemhandlers.It keeps on registering event handlers with the TaskService.</p><p>When I connect the workItemHandlers, they register eventHandlers with the taskService. When will this eventHandlers get de-registered from the taskService ?</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p><span class="comment-copy">Environment:JBPM 5.4.0.Final, Drools 5.5.0.Final, Jboss 7.1.0.Final</span></p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p><span class="comment-copy">I debugged through the code, task-completed-event was dispatched to more than 1 session.It must be a problem with my ksession management.I created the GenericHTWorkItemHandler with <code>owningKSessionOnly=true  but this didn't worked.</code></span></p></div>
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