[jboss-user] [jBPM] - Re: jbpm 5.3 - kSession.dispose() - Error: Session was previously disposed

[Brian Wallis]

Brian Wallis [https://community.jboss.org/people/bwallis42] created the discussion

"Re: jbpm 5.3 - kSession.dispose() - Error: Session was previously disposed"

To view the discussion, visit: https://community.jboss.org/message/748137#748137

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I have the same problem where I am getting a session from within an onMessage() method of an Message Driven Bean. The transactions are container controlled so I cannot call the ksession dispose after the transaction ends since the container ends the transaction not me.

This was working with JBPM 5.1.


@TransactionAttribute(value = TransactionAttributeType.REQUIRED)
    public void onMessage(Message message)
    {
        try
        {
            DocumentCreated inbound = MessageBusUtility.unmarshallMessage(message);
            LOGGER.info("Message body: " + inbound);


            ksession = jbpmLauncher.getSession();


            // start a new process instance
            Map<String, Object> params = buildParams(inbound);
            ksession.startProcess("au.com.infomedix.harvey." + inbound.getDocumentGroup().getWorkflowName().toLowerCase(), params);
            Audit.newWorkflow((String) params.get(EReferralFields.PATIENT_URNO.getKey()), (String) params.get(EReferralFields.PATIENT_DOMAIN.getKey()),
                    (String) params.get(EReferralFields.PATIENT_FIRSTNAME.getKey()), (String) params.get(EReferralFields.PATIENT_LASTNAME.getKey()));
            ksession.fireAllRules();


            // TODO This should be disposed but this fails within the transaction boundary.
//             ksession.dispose(); //dispose after use.
        }
        catch (Exception e)
        {
            throw new RuntimeException("Exception occurred.", e);
        }
    }



where the getSession method is


public StatefulKnowledgeSession getSession(int sessionId)
    {
        initialize();


        StatefulKnowledgeSession ksession = JPAKnowledgeService.loadStatefulKnowledgeSession(sessionId, kbase, kconfig, kenvironment);
        registerWorkItemHandlers(ksession);


        return ksession;
    }



Not sure how to proceed with this. Seems I need to get the container to dispose of the session after the transaction but that isn't possible with an MDB as far as I know.

thanks.
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