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which JMS based human task work item handler need to use ?
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created by <a href="https://community.jboss.org/people/vinayakpict">vinayak Bhadage</a> in <i>jBPM</i> - <a href="https://community.jboss.org/message/810199#810199">View the full discussion</a>
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<div class="jive-rendered-content"><p>hi,</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>I want to user JMSTaskServer as transporter between JBPM 5.4 process engine and TaskClient. </p><p>Serever is initilized as:</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><pre class="jive-pre"><code class="jive-code jive-java">Properties serverProperties = <font color="navy"><b>new</b></font> Properties();
        serverProperties.setProperty(<font color="red">"JMSTaskServer.connectionFactory"</font>, <font color="red">"ConnectionFactory"</font>);
        serverProperties.setProperty(<font color="red">"JMSTaskServer.transacted"</font>, <font color="red">"true"</font>);
        serverProperties.setProperty(<font color="red">"JMSTaskServer.acknowledgeMode"</font>, <font color="red">"AUTO_ACKNOWLEDGE"</font>);
        serverProperties.setProperty(<font color="red">"JMSTaskServer.queueName"</font>, <font color="red">"tasksQueue"</font>);
        serverProperties.setProperty(<font color="red">"JMSTaskServer.responseQueueName"</font>, <font color="red">"tasksResponseQueue"</font>);
 
 
        <font color="navy"><b>try</b></font> <font color="navy">{</font>
            this.server = <font color="navy"><b>new</b></font> JMSTaskServer(taskService, serverProperties, <font color="navy"><b>new</b></font> InitialContext());
        <font color="navy">}</font> <font color="navy"><b>catch</b></font> (NamingException e1) <font color="navy">{</font>
            e1.printStackTrace();
        <font color="navy">}</font>
 
 
        thread = <font color="navy"><b>new</b></font> Thread(server);
        thread.start();
 
</code></pre><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>The Task client for JMS is as :</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><pre class="jive-pre"><code class="jive-code jive-java">  <font color="navy"><b>public</b></font> <font color="navy"><b>static</b></font> TaskService getTaskClient() <font color="navy">{</font>
 
 
          Properties clientProperties = <font color="navy"><b>new</b></font> Properties();
          clientProperties.setProperty(<font color="red">"JMSTaskClient.connectionFactory"</font>, <font color="red">"ConnectionFactory"</font>);
          clientProperties.setProperty(<font color="red">"JMSTaskClient.transactedQueue"</font>, <font color="red">"true"</font>);
          clientProperties.setProperty(<font color="red">"JMSTaskClient.acknowledgeMode"</font>, <font color="red">"AUTO_ACKNOWLEDGE"</font>);
          clientProperties.setProperty(<font color="red">"JMSTaskClient.queueName"</font>, <font color="red">"tasksQueue"</font>);
          clientProperties.setProperty(<font color="red">"JMSTaskClient.responseQueueName"</font>, <font color="red">"tasksResponseQueue"</font>);
          TaskService client = <font color="navy"><b>null</b></font>;
          <font color="navy"><b>try</b></font> <font color="navy">{</font>
              client = <font color="navy"><b>new</b></font> SyncTaskServiceWrapper(<font color="navy"><b>new</b></font> TaskClient(<font color="navy"><b>new</b></font> JMSTaskClientConnector( UUID.randomUUID().toString() + <font color="red">"WSThroughJMSHumanTaskHandler"</font> , <font color="navy"><b>new</b></font> JMSTaskClientHandler(
                        SystemEventListenerFactory.getSystemEventListener()), clientProperties, <font color="navy"><b>new</b></font> InitialContext())));
          <font color="navy">}</font> <font color="navy"><b>catch</b></font> (NamingException e) <font color="navy">{</font>
              e.printStackTrace();
          <font color="navy">}</font>
 
 
          <font color="navy"><b>return</b></font> client;
    <font color="navy">}</font>
 
 
</code></pre><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>When I do the TaskSummary look up it works fine.</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>But when i start the new process instance which having human task it fails.</p><p>so which human task work item handler need to use.</p><p>I have tried below but does not work</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><pre class="jive-pre"><code class="jive-code jive-java">       CommandBasedHornetQWSHumanTaskHandler wsHumanTaskHandler = <font color="navy"><b>new</b></font> CommandBasedHornetQWSHumanTaskHandler(knowledgeSession);
       wsHumanTaskHandler.setClient(getTaskClientInstance());
       wsHumanTaskHandler.setConnection(<font color="red">"127.0.0.1"</font>, 5445);
 
      knowledgeSession.getWorkItemManager().registerWorkItemHandler(<font color="red">"Human Task"</font>, wsHumanTaskHandler);
 
</code></pre><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>This is <span style="font-family: 'Lucida Grande', Arial, Helvetica, sans-serif; background-color: #ffffff;">CommandBasedHornetQWSHumanTaskHandler deprecated class but I have no clue which one need use.</span></p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>It is giving following error :</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><pre class="jive-pre"><code class="jive-code jive-java">Caused by: java.lang.RuntimeException: Error creating message
        at org.jbpm.task.service.jms.JMSTaskClientConnector.write(JMSTaskClientConnector.java:152) [jbpm-human-task-jms-5.4.0.Final.jar:5.4.0.Final]
        at org.jbpm.task.service.TaskClient.registerForEvent(TaskClient.java:623) [jbpm-human-task-core-5.4.0.Final.jar:5.4.0.Final]
        at org.jbpm.task.service.hornetq.CommandBasedHornetQWSHumanTaskHandler.connect(CommandBasedHornetQWSHumanTaskHandler.java:103) [jbpm-human-tas
k-hornetq-5.4.0.Final.jar:5.4.0.Final]
        at org.jbpm.task.service.hornetq.CommandBasedHornetQWSHumanTaskHandler.executeWorkItem(CommandBasedHornetQWSHumanTaskHandler.java:111) [jbpm-h
uman-task-hornetq-5.4.0.Final.jar:5.4.0.Final]
        at org.drools.persistence.jpa.processinstance.JPAWorkItemManager.internalExecuteWorkItem(JPAWorkItemManager.java:55) [drools-persistence-jpa-5
.5.0.Final.jar:5.5.0.Final]
        at org.jbpm.workflow.instance.node.WorkItemNodeInstance.internalTrigger(WorkItemNodeInstance.java:107) [jbpm-flow-5.4.0.Final.jar:5.4.0.Final]
 
 
        at org.jbpm.workflow.instance.impl.NodeInstanceImpl.trigger(NodeInstanceImpl.java:126) [jbpm-flow-5.4.0.Final.jar:5.4.0.Final]
        ... 42 more
Caused by: java.lang.NullPointerException
        at org.jbpm.task.service.jms.JMSTaskClientConnector.write(JMSTaskClientConnector.java:126) [jbpm-human-task-jms-5.4.0.Final.jar:5.4.0.Final]
        ... 48 more
 
</code></pre><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p><span style="font-family: 'Lucida Grande', Arial, Helvetica, sans-serif; background-color: #ffffff;">Please help me .... </span></p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p><span style="font-family: 'Lucida Grande', Arial, Helvetica, sans-serif; background-color: #ffffff;">Thanks & regards,</span></p><p><span style="font-family: 'Lucida Grande', Arial, Helvetica, sans-serif; background-color: #ffffff;">-vinayak<br/></span></p></div>
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