11:33 a.m.
Hi, I am using JBPM 3.2.2 under JBOSS 4.0.5GA and Hibernate (default JBOSS 4.0.5GA
database).
I have a very simple process definition, in which I have a fork and a join and I want all
nodes to be asynchronous. I have noticed that when I declare the two nodes between the
fork/join as asynchronous I get this exception on the stack trace:
| INFO [com.sample.action.DummyTwoActionHandler] Node Name: node1
| INFO [com.sample.action.DummyTwoActionHandler] Node Name: node3
| INFO [com.sample.action.DummyTwoActionHandler] Node Name: node2
| ERROR [org.hibernate.event.def.AbstractFlushingEventListener] Could not synchronize
database state with session
| org.hibernate.StaleObjectStateException: Row was updated or deleted by another
transaction (or unsaved-value mapping was incorrect): [org.jbpm.graph.exe.Token#874]
| at
org.hibernate.persister.entity.AbstractEntityPersister.check(AbstractEntityPersister.java:1699)
| at
org.hibernate.persister.entity.AbstractEntityPersister.update(AbstractEntityPersister.java:2342)
| at
org.hibernate.persister.entity.AbstractEntityPersister.updateOrInsert(AbstractEntityPersister.java:2242)
| at
org.hibernate.persister.entity.AbstractEntityPersister.update(AbstractEntityPersister.java:2542)
| at org.hibernate.action.EntityUpdateAction.execute(EntityUpdateAction.java:92)
| at org.hibernate.engine.ActionQueue.execute(ActionQueue.java:248)
| at org.hibernate.engine.ActionQueue.executeActions(ActionQueue.java:232)
| at org.hibernate.engine.ActionQueue.executeActions(ActionQueue.java:140)
| at
org.hibernate.event.def.AbstractFlushingEventListener.performExecutions(AbstractFlushingEventListener.java:298)
| at
org.hibernate.event.def.DefaultFlushEventListener.onFlush(DefaultFlushEventListener.java:27)
| at org.hibernate.impl.SessionImpl.flush(SessionImpl.java:1000)
| at org.hibernate.impl.SessionImpl.managedFlush(SessionImpl.java:338)
| at
org.hibernate.transaction.CacheSynchronization.beforeCompletion(CacheSynchronization.java:59)
| at org.jboss.tm.TransactionImpl.doBeforeCompletion(TransactionImpl.java:1491)
| at org.jboss.tm.TransactionImpl.beforePrepare(TransactionImpl.java:1110)
| at org.jboss.tm.TransactionImpl.commit(TransactionImpl.java:324)
| at org.jboss.tm.TxManager.commit(TxManager.java:240)
| at org.jboss.jms.asf.StdServerSession.onMessage(StdServerSession.java:351)
| at
org.jboss.mq.SpyMessageConsumer.sessionConsumerProcessMessage(SpyMessageConsumer.java:905)
| at org.jboss.mq.SpyMessageConsumer.addMessage(SpyMessageConsumer.java:170)
| at org.jboss.mq.SpySession.run(SpySession.java:323)
| at org.jboss.jms.asf.StdServerSession.run(StdServerSession.java:194)
| at
EDU.oswego.cs.dl.util.concurrent.PooledExecutor$Worker.run(PooledExecutor.java:743)
| at java.lang.Thread.run(Thread.java:619)
| 2007-09-17 17:16:59,171 ERROR [org.jboss.jms.asf.StdServerSession] failed to
commit/rollback
| org.jboss.tm.JBossRollbackException: Unable to commit,
tx=TransactionImpl:XidImpl[FormatId=257, GlobalId=emma/36, BranchQual=, localId=36]
status=STATUS_NO_TRANSACTION; - nested throwable:
(org.hibernate.StaleObjectStateException: Row was updated or deleted by another
transaction (or unsaved-value mapping was incorrect): [org.jbpm.graph.exe.Token#874])
| at org.jboss.tm.TransactionImpl.commit(TransactionImpl.java:372)
| at org.jboss.tm.TxManager.commit(TxManager.java:240)
| at org.jboss.jms.asf.StdServerSession.onMessage(StdServerSession.java:351)
| at
org.jboss.mq.SpyMessageConsumer.sessionConsumerProcessMessage(SpyMessageConsumer.java:905)
| at org.jboss.mq.SpyMessageConsumer.addMessage(SpyMessageConsumer.java:170)
| at org.jboss.mq.SpySession.run(SpySession.java:323)
| at org.jboss.jms.asf.StdServerSession.run(StdServerSession.java:194)
| at
EDU.oswego.cs.dl.util.concurrent.PooledExecutor$Worker.run(PooledExecutor.java:743)
| at java.lang.Thread.run(Thread.java:619)
| Caused by: org.hibernate.StaleObjectStateException: Row was updated or deleted by
another transaction (or unsaved-value mapping was incorrect):
[org.jbpm.graph.exe.Token#874]
| at
org.hibernate.persister.entity.AbstractEntityPersister.check(AbstractEntityPersister.java:1699)
| at
org.hibernate.persister.entity.AbstractEntityPersister.update(AbstractEntityPersister.java:2342)
| at
org.hibernate.persister.entity.AbstractEntityPersister.updateOrInsert(AbstractEntityPersister.java:2242)
| at
org.hibernate.persister.entity.AbstractEntityPersister.update(AbstractEntityPersister.java:2542)
| at org.hibernate.action.EntityUpdateAction.execute(EntityUpdateAction.java:92)
| at org.hibernate.engine.ActionQueue.execute(ActionQueue.java:248)
| at org.hibernate.engine.ActionQueue.executeActions(ActionQueue.java:232)
| at org.hibernate.engine.ActionQueue.executeActions(ActionQueue.java:140)
| at
org.hibernate.event.def.AbstractFlushingEventListener.performExecutions(AbstractFlushingEventListener.java:298)
| at
org.hibernate.event.def.DefaultFlushEventListener.onFlush(DefaultFlushEventListener.java:27)
| at org.hibernate.impl.SessionImpl.flush(SessionImpl.java:1000)
| at org.hibernate.impl.SessionImpl.managedFlush(SessionImpl.java:338)
| at
org.hibernate.transaction.CacheSynchronization.beforeCompletion(CacheSynchronization.java:59)
| at org.jboss.tm.TransactionImpl.doBeforeCompletion(TransactionImpl.java:1491)
| at org.jboss.tm.TransactionImpl.beforePrepare(TransactionImpl.java:1110)
| at org.jboss.tm.TransactionImpl.commit(TransactionImpl.java:324)
| ... 8 more
I am not sure whether this is a bug of JBPM 3.2.2 but it only happens when I declare any
nodes that exist between a fork/join as asynchronous. Here is my process definition:
| <?xml version="1.0" encoding="UTF-8"?>
|
| <process-definition
| xmlns="urn:jbpm.org:jpdl-3.2" name="AsyncProcessFork">
| <start-state name="start">
| <transition name="" to="node1"></transition>
| </start-state>
| <node name="node1" async='true'>
| <action
class="com.sample.action.DummyTwoActionHandler"></action>
| <transition name="" to="fork1"></transition>
| </node>
| <fork name="fork1">
| <transition name="" to="node2"></transition>
| <transition name="tr2" to="node3"></transition>
| </fork>
| <join name="join1">
| <transition name="" to="node4"></transition>
| </join>
| <node name="node2" async='true'>
| <action
class="com.sample.action.DummyTwoActionHandler"></action>
| <transition name="" to="join1"></transition>
| </node>
| <node name="node3" async='true'>
| <action
class="com.sample.action.DummyTwoActionHandler"></action>
| <transition name="" to="join1"></transition>
| </node>
| <end-state name="end1"></end-state>
| <node name="node4" async='true'>
| <action
class="com.sample.action.DummyTwoActionHandler"></action>
| <transition name="" to="end1"></transition>
| </node>
| </process-definition>
And here is my DummyActionHandler which just goes to the next node:
| public class DummyTwoActionHandler implements ActionHandler {
|
| static Logger log;
|
| public void execute(ExecutionContext executionContext) throws Exception {
|
| log = Logger.getLogger(this.getClass());
|
| log.info("Node Name: " + executionContext.getNode().getName());
|
| executionContext.getNode().leave(executionContext);
| }
|
| }
|
I would be really grateful for any help on this matter.
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