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Re: JBPM 5.4.0-Final: Human Task variable mapping is not working
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created by <a href="https://community.jboss.org/people/maq99">maq99</a> in <i>jBPM</i> - <a href="https://community.jboss.org/message/792774#792774">View the full discussion</a>
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<div class="jive-rendered-content"><p>Hallo,</p><p>I have simmilar problem and decide to add my post to this topic instead create new one. Something wrong is with saveing variables. I already spend some time on it and have not found sollution. All base on seam framework (web app) + EJB3 as jbpm managment layer. Persistence is made on Postgres.</p><p>Here is my diagram: </p><p><a href="https://community.jboss.org/servlet/JiveServlet/showImage/2-792774-20169/Diagram.gif"><span> https://community.jboss.org/servlet/JiveServlet/downloadImage/2-792774-20169/450-120/Diagram.gif </span></a></p><p>As You can see there is two human tasks.. After process is started user:user1 pick object:wrapper (from external Wsdl) to edit, chenge its fields and confirm changes or reject it. Eddited object is about to be placed as HT result and stored as process variables. </p><p>First gateway check if object have been placed (not null - go to commit) or changes have been rejected (is null - cancel & end process) </p><p>At begininig next HT (approval) fallowing log script is called, then it calls my custom <code>EscalatedDeadlineHandler</code> and send email to user:approver that he has task assign. Approval base on object:wrapper from previous HT.</p><p>Approvel page display edited object:wrapper and shows changes made by user:user1</p><p>As a result Boolean value isApproved has to be added to proces variables. Next gateway check isApproved on true go to submit changes (send back to store edited object - external Wsdl) - else goes to end. </p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>process variables: </p><p>Name: wrapper; Type: Object; ClassName: Object</p><p>Name: isApproved; Type: Object; ClassName: Object</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>1HT (edit object) Result mapping:</p><p>Parameter: result; Variable: wrapper</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>1Gateway:</p><p>commit: Type: code; Dialect: mvel; wrapper!=null</p><p>cancel:  Type: code; Dialect: mvel; wrapper==null</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>2HT (approval) Parameter mapping:</p><p>Parameter wrapper; Variable: wrapper;</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>2HT (approval) Result mapping:</p><p>Parameter isApproved; Variable: isApproved;</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>Starting process code:</p><p>@PersistenceUnit(unitName = "org.jbpm.persistence.jpa")</p><p>protected EntityManagerFactory jbpmPersistence;</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>@PersistenceUnit(unitName = "org.jbpm.task")</p><p>protected EntityManagerFactory jbpmTask;</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>(...)</p><p>Environment env = EnvironmentFactory.newEnvironment();</p><p>env.set(EnvironmentName.TRANSACTION_MANAGER,TransactionManagerServices.getTransactionManager());</p><p>env.set(EnvironmentName.ENTITY_MANAGER_FACTORY, emf);</p><p>env.set(EnvironmentName.OBJECT_MARSHALLING_STRATEGIES,</p><p>          new ObjectMarshallingStrategy[] {</p><p>                    new JPAPlaceholderResolverStrategy(env),</p><p>                    new SerializablePlaceholderResolverStrategy(</p><p>                              ClassObjectMarshallingStrategyAcceptor.DEFAULT) });</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>KnowledgeBuilder kbuilder = KnowledgeBuilderFactory.newKnowledgeBuilder();</p><p>kbuilder.add(ResourceFactory.newClassPathResource(bpmn),ResourceType.BPMN2);</p><p>// Check for errors</p><p>if (kbuilder.hasErrors()) {</p><p>          if (kbuilder.getErrors().size() > 0) {</p><p>                    for (KnowledgeBuilderError error : kbuilder.getErrors()) {</p><p>                              log.error(error.toString());</p><p>                    }</p><p>          }</p><p>}</p><p>KnowledgeBase kbase = kbuilder.newKnowledgeBase();</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>KnowledgeSessionConfiguration conf = KnowledgeBaseFactory.newKnowledgeSessionConfiguration();</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>StatefulKnowledgeSession ksession = JPAKnowledgeService.newStatefulKnowledgeSession(kbase, conf, env);</p><p>KnowledgeRuntimeLogger knowledgeRuntimeLogger = KnowledgeRuntimeLoggerFactory.newThreadedFileLogger(ksession, "test", 1000);</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>MyHtWorkItemHandler workItemHandler = new MyHtWorkItemHandler(</p><p>                    ksession);</p><p>workItemHandler.setLocal(true);</p><p>workItemHandler.setIpAddress(WUIConfiguration.getHumanTaskServiceIP());</p><p>workItemHandler.setPort(WUIConfiguration.getHumanTaskServicePort());</p><p>workItemHandler.setClient(getLocalTaskService());</p><p>ksession.getWorkItemManager().registerWorkItemHandler("Human Task",</p><p>                    workItemHandler);</p><p>workItemHandler.connect();</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>WorkflowProcessInstance processInstance = (WorkflowProcessInstance) ksession</p><p>                                        .startProcess(processId);// variables will be added in HT.. .</p><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>protected TaskService getLocalTaskService() {</p><p>          if (taskService == null) {</p><p>                    taskService = new org.jbpm.task.service.TaskService(jbpmTask,</p><p>                                        SystemEventListenerFactory.getSystemEventListener());</p><p>//for PoC it can be singleton? </p><p>                    taskService</p><p>                                        .setEscalatedDeadlineHandler(MyEscalatedDeadlineHandler</p><p>                                                            .getInstance());</p><p>                    TaskServiceSession taskServiceSession = taskService.createSession();</p><p>                    // TODO create dynamic users list..</p><p>                    taskServiceSession.addUser(new User("approver"));</p><p>                    taskServiceSession.addUser(new User("user1"));</p><p>          }</p><p>          // taskservicesMap.put(processName, taskService);</p><p>          return new LocalTaskService(taskService);</p><p>}</p></div>
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