<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<html>
<body link="#355491" alink="#4262a1" vlink="#355491" style="background: #e2e2e2; margin: 0; padding: 20px;">
<div>
<table cellpadding="0" bgcolor="#FFFFFF" border="0" cellspacing="0" style="border: 1px solid #dadada; margin-bottom: 30px; width: 100%; -moz-border-radius: 6px; -webkit-border-radius: 6px;">
<tbody>
<tr>
<td>
<table border="0" cellpadding="0" cellspacing="0" bgcolor="#FFFFFF" style="border: solid 2px #ccc; background: #dadada; width: 100%; -moz-border-radius: 6px; -webkit-border-radius: 6px;">
<tbody>
<tr>
<td bgcolor="#000000" valign="middle" height="58px" style="border-bottom: 1px solid #ccc; padding: 20px; -moz-border-radius-topleft: 3px; -moz-border-radius-topright: 3px; -webkit-border-top-right-radius: 5px; -webkit-border-top-left-radius: 5px;">
<h1 style="color: #333333; font: bold 22px Arial, Helvetica, sans-serif; margin: 0; display: block !important;">
<!-- To have a header image/logo replace the name below with your img tag -->
<!-- Email clients will render the images when the message is read so any image -->
<!-- must be made available on a public server, so that all recipients can load the image. -->
<a href="https://community.jboss.org/index.jspa" style="text-decoration: none; color: #E1E1E1">JBoss Community</a></h1>
</td>
</tr>
<tr>
<td bgcolor="#FFFFFF" style="font: normal 12px Arial, Helvetica, sans-serif; color:#333333; padding: 20px; -moz-border-radius-bottomleft: 4px; -moz-border-radius-bottomright: 4px; -webkit-border-bottom-right-radius: 5px; -webkit-border-bottom-left-radius: 5px;"><h3 style="margin: 10px 0 5px; font-size: 17px; font-weight: normal;">
Re: Problem with multiple sessions
</h3>
<span style="margin-bottom: 10px;">
created by <a href="https://community.jboss.org/people/garethed">Gareth Edwards</a> in <i>jBPM</i> - <a href="https://community.jboss.org/message/806545#806545">View the full discussion</a>
</span>
<hr style="margin: 20px 0; border: none; background-color: #dadada; height: 1px;">
<div class="jive-rendered-content"><p><span style="font-family: arial, helvetica, sans-serif;">Hello again Maciej,</span></p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p><span style="font-family: arial, helvetica, sans-serif;">I have a method to start a new session:</span></p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><pre class="jive-pre"><code class="jive-code">
public synchronized int startNewSession(WorkflowSettings wfs) throws APIException{
                    purgeDeadSessions();
                    KnowledgeBase kbase = packageService.getKnowledgeBase(wfs.getPackageName(), wfs.getPackageVersion());
                    StatefulKnowledgeSession ksession = null;
                              ksession = getSession(kbase);
                    log.debug("Starting new session:" + ksession.getId());
                    wfs.setSessionId(ksession.getId());
                    WorkflowSessionTask wst = new WorkflowSessionTask(workflowSessionService, ksession, wfs);
                   // Make a copy of the user to enable updates of workflowSession table
                    final User u = new SessionUser(wfs.getUser().getId());
                    wst.startWorkFlow(true, u);
                     this.workFlowSessionTasks.add(wst);
                    log.info("WorkflowSettings:" + wfs.toString());
                    return wst.getSessionId();
          }
</code></pre><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p class="p1">  </p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>The WorkflowSessionTask is an inner class that I'm using to contain the session.</p><p>I add the instance of this to an ArrayList.  When adding a new session I purge this list of any that are marked as completed.</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><pre class="jive-pre"><code class="jive-code">
public void startWorkFlow(boolean startProcess, final User user) {
                    // pwss is a spring service that performs CRUD on a database table using hibernate
                    this.completed = false;
                    JPAWorkingMemoryDbLogger logger = new JPAWorkingMemoryDbLogger(ksession);
                    String connectorName = "Hornet" + UUID.randomUUID().toString();
                    AsyncHornetQHTWorkItemHandler humanTaskHandler = new AsyncHornetQHTWorkItemHandler(new AsyncHornetQTaskClient(connectorName), ksession, OnErrorAction.LOG);
                    humanTaskHandler.setIpAddress(ipAddress);
                    humanTaskHandler.setOwningSessionOnly(true);
                    // The CMTDisposeCommand disposes the session synchronised with the transaction
                    final CMTDisposeCommand dc = new CMTDisposeCommand();
                    dc.setHumanTaskHandler(humanTaskHandler);
                    ksession.getWorkItemManager().registerWorkItemHandler("Human Task", humanTaskHandler);
 
                    WorkflowCurrentTaskHandler currentTaskHandler = new WorkflowCurrentTaskHandler();
                    currentTaskHandler.setUser(user);
                    currentTaskHandler.setWorkflowSessionService(pwss);
                    currentTaskHandler.setSessionId(ksession.getId());
                    dc.setCurrentTaskHandler(currentTaskHandler);
                    ksession.getWorkItemManager().registerWorkItemHandler("UpdateWorkflowCurrentTask",currentTaskHandler);
 
                    // The workflow event listener uses the afterNodeTriggered event to update a database table
                    WorkflowEventListener wel = new WorkflowEventListener();
                    wel.setPatientWorkflowSessionService(pwss);
                    wel.setSessionId(ksession.getId());
                    wel.setUser(user);
                    dc.setWorkflowEventListener(wel);
                    ksession.addEventListener(wel);
 
                    ksession.addEventListener(new DefaultProcessEventListener(){
                              @Override
                              public void afterProcessCompleted(ProcessCompletedEvent event){
                                        log.info("~~~~~~~~~Workflow Session:" + ksession.getId() + " Completed~~~~~~~~~");
                                        WorkflowSession pws = null;
 
                                        try {
                                                  pws = pwss.get(ksession.getId());
                                                  pws.setActive(false);
                                                  pwss.update(pws, user);
                                        } catch (APIException e1) {
                                                  // TODO Auto-generated catch block
                                                  e1.printStackTrace();
                                        }
                                        completed = true;
                                        workflowSettings.setCompleted(true);
                                        if (pws.getTId() != null){
                                                  String[] nextWorkflow = pwss.getNextWorkflow(pws.getTId(), pws.getWorkflowRef());
                                                  if (nextWorkflow != null){
                                                            WorkflowSettings settings = new WorkflowSettings();
                                                            settings.setActive(true);
                                                            settings.setCompleted(false);
                                                            settings.setPackageName(nextWorkflow[0]);
                                                            settings.setPackageVersion("LATEST");
                                                            settings.setWorkflowName(nextWorkflow[0] + "." + nextWorkflow[1]);
                                                            settings.setPId(pws.getPId());
                                                            settings.setTId(pws.getTId());
                                                            settings.setUser(user);
                                                            HashMap<String, Object> params = new HashMap<String, Object>();
                                                            params.put("username",user.getUsername());
                                                            params.put("pId", pws.getPId());
                                                            params.put("tId", pws.getTId().intValue());
                                                            params.put("packageName", settings.getPackageName());
                                                            params.put("packageVersion", settings.getPackageVersion());
                                                            settings.setWorkFlowData(params);
                                                            queueWorkflow(settings);
                                                  }
                                        }
                                        log.info("Disposing of " + event.getProcessInstance().getProcessName() + "!");
                                        ksession.execute(dc);
                              }
                    });
 
                    if (startProcess)
                              ksession.startProcess(workflowSettings.getWorkflowName(),workflowSettings.getWorkFlowData());
          }
</code></pre><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>Hopefully this helps.</p></div>
<div style="background-color: #f4f4f4; padding: 10px; margin-top: 20px;">
<p style="margin: 0;">Reply to this message by <a href="https://community.jboss.org/message/806545#806545">going to Community</a></p>
<p style="margin: 0;">Start a new discussion in jBPM at <a href="https://community.jboss.org/choose-container!input.jspa?contentType=1&containerType=14&container=2034">Community</a></p>
</div></td>
</tr>
</tbody>
</table>
</td>
</tr>
</tbody>
</table>
</div>
</body>
</html>