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Jbpm 3 jms state problem
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created by <a href="http://community.jboss.org/people/hifly81">Giovanni Marigi</a> in <i>jBPM</i> - <a href="http://community.jboss.org/message/569174#569174">View the full discussion</a>
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<div class="jive-rendered-content"><p>Hi,</p><p>I'm using jbpm 3 and I want to realize a state node as a jms topic subscriber.</p><p>Basically I want to call the<strong> leaveNode() </strong>inside my "jms handler" as soon as a message comes to the topic.</p><p>The problem is that I can't call the <strong>leaveNode() <strong>without hibernate exceptions</strong></strong> cause the <strong>executionContext inside the onMessage method </strong>is not the same</p><p><strong>executionContext inside the execute method.<br/></strong></p><p>I think beacuse they are running in separate threads?<strong><br/></strong></p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>I'm not so good in jbpm and maybe my approach is completely wrong!</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>Thanks,</p><p>Giovanni</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>public class WaitForJmsHandler implements ActionHandler {  </p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>    Context jndiContext = null;<br/>    <strong>ExecutionContext executionContext = null;</strong><br/>    TopicConnectionFactory topicConnectionFactory = null;<br/>    TopicConnection topicConnection = null;<br/>    TopicSession topicSession = null;<br/>    Topic topic = null;<br/>    TopicSubscriber topicSubscriber = null;</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>    public void execute(ExecutionContext ctx) throws Exception {<br/>        this.executionContext = ctx;</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>        Hashtable props = new Hashtable();<br/>        props.put(javax.naming.Context.INITIAL_CONTEXT_FACTORY,"org.jnp.interfaces.NamingContextFactory");<br/>        props.put("java.naming.factory.url.pkgs","org.jboss.naming:org.jnp.interfaces");<br/>        props.put(javax.naming.Context.PROVIDER_URL, "127.0.0.1:1099");<br/>        jndiContext = new InitialContext(props);</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>        topicConnectionFactory = (TopicConnectionFactory)<br/>        jndiContext.lookup("ConnectionFactory");<br/>        topic = (Topic) jndiContext.lookup("topic/testTopic");</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>        topicConnection = topicConnectionFactory.createTopicConnection();<br/>        topicSession = topicConnection.createTopicSession(false, Session.AUTO_ACKNOWLEDGE);<br/>        topicSubscriber = topicSession.createSubscriber(topic);</p><p>        topicSubscriber.setMessageListener(new CustomJMSListener() {<br/>            @Override<br/>            public void onMessage(Message message) {<br/>                try {<br/>                    System.out.println("Received message:["+message+"]");<br/>                    <strong>executionContext.leaveNode();</strong><br/>                    System.out.println("Leaving node....");<br/>                }<br/>                catch(Exception ex) {<br/>                    try {<br/>                        topicConnection.stop();<br/>                    } catch (JMSException e) {<br/>                        // TODO Auto-generated catch block<br/>                        e.printStackTrace();<br/>                    }<br/>                }<br/>            }<br/>        });</p><p><br/>        topicConnection.start();<br/>        JbpmContext jbpmContext = executionContext.getJbpmContext();<br/>        jbpmContext.save(executionContext.getProcessInstance());</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>    }</p></div>
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