[JBoss jBPM] - JTA transaction error inside jboss portal
by lpiccoli
portal 2.7.2
jbpm 3.2.2
hi all
when accessing the JBPM context inside a portlet of jboss portal the following JTA error occurs depending whether the the context is created or get Current is called.
i read the details of jbpm transation here
http://docs.jboss.org/jbpm/v3/userguide/deployment.html
I thought i understood the JBPM JTA settings but i have totally lost now.
my JTA settings are below.
| <jbpm-context>
| <service name="persistence" factory="org.jbpm.persistence.jta.JtaDbPersistenceServiceFactory" />
| <service name="scheduler" factory="org.jbpm.scheduler.db.DbSchedulerServiceFactory" />
| <service name="message" factory="org.jbpm.msg.db.DbMessageServiceFactory" />
| <service name="tx" factory="org.jbpm.tx.TxServiceFactory"/>
| </jbpm-context>
|
When calling getCurrentJbpmContext() as in below, a 'Session closed' error occurs.
| WorkflowService workflowService = (WorkflowService) ctx.lookup("java:/portal/WorkflowService")
| writer.println( "workflowService:" + workflowService );
|
| JbpmContext context = workflowService.getJbpmConfiguration().getCurrentJbpmContext();
|
| List<ProcessDefinition> taskList = context.getGraphSession().findAllProcessDefinitions();
|
So an existing context is found but the hibernate session is closed.
| 2009-07-27 16:21:52,222 ERROR [STDERR] org.hibernate.SessionException: Session is closed!
| at org.hibernate.impl.AbstractSessionImpl.errorIfClosed(AbstractSessionImpl.java:49)
| at org.hibernate.impl.SessionImpl.getNamedQuery(SessionImpl.java:1258)
| at org.jbpm.db.GraphSession.findAllProcessDefinitions(GraphSession.java:209)
| at org.jboss.portal.portlet.samples.SimplestHelloWorldPortlet.doView(SimplestHelloWorldPortlet.java:76)
|
So when i call createJbpmContext(), the JTA complains that an existing transaction is already on the current thread.
| WorkflowService workflowService = (WorkflowService) ctx.lookup("java:/portal/WorkflowService")
| writer.println( "workflowService:" + workflowService );
|
| JbpmContext context = workflowService.getJbpmConfiguration().createJbpmContext();
|
| List<ProcessDefinition> taskList = context.getGraphSession().findAllProcessDefinitions();
|
| Cause: org.jboss.portal.portlet.PortletInvokerException: java.lang.IllegalStateException: BaseTransaction.checkTransactionState - [com.arjuna.ats.internal.jta.transaction.arjunacore.alreadyassociated] [com.arjuna.ats.internal.jta.transaction.arjunacore.alreadyassociated] thread is already associated with a transaction!
| Message: java.lang.IllegalStateException: BaseTransaction.checkTransactionState - [com.arjuna.ats.internal.jta.transaction.arjunacore.alreadyassociated] [com.arjuna.ats.internal.jta.transaction.arjunacore.alreadyassociated] thread is already associated with a transaction!
| StackTrace:
|
| org.jboss.portal.portlet.PortletInvokerException: java.lang.IllegalStateException: BaseTransaction.checkTransactionState - [com.arjuna.ats.internal.jta.transaction.arjunacore.alreadyassociated] [com.arjuna.ats.internal.jta.transaction.arjunacore.alreadyassociated] thread is already associated with a transaction!
| at org.jboss.portal.portlet.aspects.portlet.ContextDispatcherInterceptor.invoke(ContextDispatcherInterceptor.java:101)
| at org.jboss.portal.portlet.PortletInvokerInterceptor.invoke(PortletInvokerInterceptor.java:82)
| at org.jboss.portal.portlet.aspects.portlet.SecureTransportInterceptor.invoke(SecureTransportInterceptor.java:69)
| at org.jboss.portal.portlet.PortletInvokerInterceptor.invoke(PortletInvokerInterceptor.java:82)
| at org.jboss.portal.portlet.aspects.portlet.ValveInterceptor.invoke(ValveInterceptor.java:75)
| at org.jboss.portal.portlet.PortletInvokerInterceptor.invoke(PortletInvokerInterceptor.java:82)
| at org.jboss.portal.portlet.container.ContainerPortletInvoker.invoke(ContainerPortletInvoker.java:116)
|
|
how is jbpm configured to use the existing JTA inside portal?
any help is most appreciated.
-lp
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17 years