drools-persistence-jpa - ClassCastException on ForEachNodeInstance ------------------------------------------------------------------ Key: JBRULES-2304 URL: https://jira.jboss.org/jira/browse/JBRULES-2304 Project: Drools Issue Type: Bug Security Level: Public (Everyone can see) Components: All Affects Versions: 5.1.0.M1 Reporter: gah doh Assignee: Mark Proctor Testing out JPAVariablePersister. It appears the session, processes, and variables are persisted. However, when I try to load the session again, and reopen the process as follows, I get a ClassCastException. StatefulKnowledgeSession session = JPAKnowledgeService.loadStatefulKnowledgeSession( 1, knowledgeBase, null, env ); ProcessInstance processClm = session.getProcessInstance(1); The second line (ClaimsDemoJpaTest.java:182) is the source of the stack trace below. The error makes sense, as: ForEachNodeInstance extends CompositeNodeInstance CompositeContextNodeInstance extends CompositeNodeInstance So they clearly cannot be cast to each other, but I'm not of how to troubleshoot this beyond that. The line of code throwing the error clearly expects to be able to cast the nodeInstance. restoreVariable(variableInfo, parentIds, variableName, (CompositeContextNodeInstance) nodeInstance); Here is the stack: java.lang.ClassCastException: org.drools.workflow.instance.node.ForEachNodeInstance cannot be cast to org.drools.workflow.instance.node.CompositeContextNodeInstance at org.drools.persistence.processinstance.ProcessInstanceInfo.restoreVariable(ProcessInstanceInfo.java:198) at org.drools.persistence.processinstance.ProcessInstanceInfo.restoreVariables(ProcessInstanceInfo.java:166) at org.drools.persistence.processinstance.ProcessInstanceInfo.getProcessInstance(ProcessInstanceInfo.java:144) at org.drools.persistence.processinstance.JPAProcessInstanceManager.getProcessInstance(JPAProcessInstanceManager.java:62) at org.drools.common.AbstractWorkingMemory.getProcessInstance(AbstractWorkingMemory.java:1720) at org.drools.impl.StatefulKnowledgeSessionImpl.getProcessInstance(StatefulKnowledgeSessionImpl.java:261) at org.drools.command.runtime.process.GetProcessInstanceCommand.execute(GetProcessInstanceCommand.java:29) at org.drools.command.runtime.process.GetProcessInstanceCommand.execute(GetProcessInstanceCommand.java:12) at org.drools.persistence.session.SingleSessionCommandService.execute(SingleSessionCommandService.java:254) at org.drools.command.impl.CommandBasedStatefulKnowledgeSession.getProcessInstance(CommandBasedStatefulKnowledgeSession.java:92) at com.csatp.svc.rulesmgr.claim.ClaimsDemoJpaTest.validateDocumentWorkflow2(ClaimsDemoJpaTest.java:182) Obviously this is a flow with a ForEach node. The ForEach calls a subflow for each item in the List claim.roles, in my test case, there are 2 subflows. I don't know if it helps, but here is the forEach node from the flow: <forEach id="2" name="ForEach" x="423" y="62" width="200" height="150" variableName="role" collectionExpression="claim.roles" > <nodes> <subProcess id="1" name="Document Workflow" x="36" y="40" width="132" height="48" processId="DocumentWorkflow2" > <mapping type="in" from="role" to="role" /> </subProcess> </nodes> <connections> </connections> <in-ports> <in-port type="DROOLS_DEFAULT" nodeId="1" nodeInType="DROOLS_DEFAULT" /> </in-ports> <out-ports> <out-port type="DROOLS_DEFAULT" nodeId="1" nodeOutType="DROOLS_DEFAULT" /> </out-ports> </forEach> -- This message is automatically generated by JIRA. - If you think it was sent incorrectly contact one of the administrators: https://jira.jboss.org/jira/secure/Administrators.jspa - For more information on JIRA, see: http://www.atlassian.com/software/jira