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jbpm 5.4.0 - NullPointerException completing workItem when using Spring local transactions and shared entity manager.
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created by <a href="https://community.jboss.org/people/xmithj">J Xmith</a> in <i>jBPM</i> - <a href="https://community.jboss.org/message/789975#789975">View the full discussion</a>
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<div class="jive-rendered-content"><p>I decided to give it a try to Spring local transactions and shared entity manager, so I changed my configuration as per user guide v5.4.</p><p>I tested with a fairly simple business process with an asynchronous workItem that get completed after certain amount of time by a different thread.</p><p>Everything went well until the scheduled timer tried to complete the workItem by calling:</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>     ksession.getWorkItemManager().completeWorkItem(workItemId, resultMap);</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>By executing this line, I am getting this exception:</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>2013-01-10 15:13:46,234 ERROR  [Timer-0] SingleSessionCommandService M[rollbackTransaction] --> Could not commit session</p><p>java.lang.NullPointerException</p><p>    at org.jbpm.workflow.instance.node.WorkItemNodeInstance.workItemCompleted(WorkItemNodeInstance.java:306)</p><p>    at org.jbpm.workflow.instance.node.WorkItemNodeInstance.signalEvent(WorkItemNodeInstance.java:285)</p><p>    at org.jbpm.workflow.instance.impl.WorkflowProcessInstanceImpl.signalEvent(WorkflowProcessInstanceImpl.java:342)</p><p>    at org.drools.persistence.jpa.processinstance.JPAWorkItemManager.completeWorkItem(JPAWorkItemManager.java:121)</p><p>    at org.drools.command.runtime.process.CompleteWorkItemCommand.execute(CompleteWorkItemCommand.java:69)</p><p>    at org.drools.command.runtime.process.CompleteWorkItemCommand.execute(CompleteWorkItemCommand.java:32)</p><p>    at org.drools.command.impl.DefaultCommandService.execute(DefaultCommandService.java:36)</p><p>    at org.drools.persistence.SingleSessionCommandService.execute(SingleSessionCommandService.java:373)</p><p>    at org.drools.command.impl.CommandBasedStatefulKnowledgeSession$1.completeWorkItem(CommandBasedStatefulKnowledgeSession.java:150)</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>The passed workItemId is correct (the expected one).</p><p>The same test runs successfully when configuring for JTA transaction management. Should I create a Jira issue for this?</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>Regards,</p><p>John</p></div>
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