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Human tasks : LocalTaskService JTA issue
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created by <a href="https://community.jboss.org/people/milhaim">Miloud Haimoune</a> in <i>jBPM</i> - <a href="https://community.jboss.org/message/743349#743349">View the full discussion</a>
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<div class="jive-rendered-content"><p>Hi all,</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>I'm Using JBPM5.2.final in a seam 2 application all running under jboss 5.1 SA.</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>When a use LocalTaskService as following : </p><p>to connect the service : </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>void</b></font> connect() <font color="navy">{</font>
            <font color="navy"><b>if</b></font> (service == <font color="navy"><b>null</b></font>) <font color="navy">{</font>
                org.jbpm.task.service.TaskService taskService = HumanTaskService.getService();               
                service = <font color="navy"><b>new</b></font> LocalTaskService(taskService.createSession());
            <font color="navy">}</font>
....
</code></pre><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>and I register the human task :</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><pre class="jive-pre"><code class="jive-code jive-java">           TaskService taskService = HumanTaskService.getService();    
            SyncWSHumanTaskHandler handler = <font color="navy"><b>new</b></font> SyncWSHumanTaskHandler(<font color="navy"><b>new</b></font> LocalTaskService(taskService.createSession()), ksession);  
            ksession.getWorkItemManager().registerWorkItemHandler(<font color="red">"Human Task"</font>, handler);
</code></pre><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>But when a start my process instance and create a human task I get then the following exception (<strong>A JTA EntityManager cannot use getTransaction()</strong>) : </p><p>I'm using jboss transaction manager</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><pre class="jive-pre"><code class="jive-code">12:33:59,014 ERROR [STDERR] Caused by: java.lang.IllegalStateException: A JTA EntityManager cannot use getTransaction()
12:33:59,014 ERROR [STDERR]     at org.hibernate.ejb.AbstractEntityManagerImpl.getTransaction(AbstractEntityManagerImpl.java:324)
12:33:59,014 ERROR [STDERR]     at org.jbpm.task.service.TaskServiceSession.taskOperation(TaskServiceSession.java:442)
12:33:59,014 ERROR [STDERR]     at org.jbpm.task.service.local.LocalTaskService.start(LocalTaskService.java:224)
12:33:59,014 ERROR [STDERR]     at com.atriumnetwork.jbpm.LocalTaskManager.completeTask(LocalTaskManager.java:96)
</code></pre><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>I checked in the sources ther were tow options for TransactionType: default and local-JTA</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>So I tried to set the transaction type to local-JTA :</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><pre class="jive-pre"><code class="jive-code jive-java">taskSession.setTransactionType(<font color="red">"local-JTA"</font>);
</code></pre><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>This is working when I start my process  but  when  execution other human tasks I get : <strong>No active JTA transaction on joinTransaction call exception</strong></p><p><strong><br/></strong></p><pre class="jive-pre"><code class="jive-code jive-java">Caused by: java.lang.RuntimeException: javax.persistence.TransactionRequiredException: No active JTA transaction on joinTransaction call
    at org.jbpm.task.service.TaskServiceSession.doOperationInTransaction(TaskServiceSession.java:990)
    at org.jbpm.task.service.TaskServiceSession.taskOperation(TaskServiceSession.java:433)
    at org.jbpm.task.service.local.LocalTaskService.skip(LocalTaskService.java:220)
    at org.jbpm.process.workitem.wsht.SyncWSHumanTaskHandler.abortWorkItem(SyncWSHumanTaskHandler.java:256)
    at org.drools.persistence.jpa.processinstance.JPAWorkItemManager.internalAbortWorkItem(JPAWorkItemManager.java:76)
    at org.jbpm.workflow.instance.node.WorkItemNodeInstance.cancel(WorkItemNodeInstance.java:249)
    at org.jbpm.workflow.instance.impl.WorkflowProcessInstanceImpl.setState(WorkflowProcessInstanceImpl.java:257)
    at org.jbpm.workflow.instance.node.EndNodeInstance.internalTrigger(EndNodeInstance.java:57)
    at org.jbpm.workflow.instance.impl.NodeInstanceImpl.trigger(NodeInstanceImpl.java:122)
</code></pre><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>is there another option for the transaction type ??  </p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>any help will be very appreciated</p></div>
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