[jbpm-users] [JBoss jBPM] - help ,error while use timer
this processdefinition:
| <?xml version="1.0" encoding="UTF-8"?>
| <process-definition xmlns="" name="tt">
| <start-state name="start-state1">
| <transition to="node4"></transition>
| </start-state>
| <state name="node4">
| <timer duedate="10 second" name="aa"
transition="timeout">
| <script>
| System.out.println("----------------->time out");
| </script>
| </timer>
| <transition to="fork1" name="timeout"></transition>
| </state>
| <fork name="fork1">
| <transition to="join1"></transition>
| </fork>
| <join name="join1">
| <transition to="end-state1"></transition>
| </join>
| <end-state name="end-state1"></end-state>
| </process-definition>
|
while the timer 'aa' arrives the duedate,there will be a exception:
2008-12-04 14:53:05,737 [] ERROR 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.job.Timer#43]
at
org.hibernate.persister.entity.AbstractEntityPersister.check(AbstractEntityPersister.java:1765)
at
org.hibernate.persister.entity.AbstractEntityPersister.delete(AbstractEntityPersister.java:2523)
at
org.hibernate.persister.entity.AbstractEntityPersister.delete(AbstractEntityPersister.java:2697)
at org.hibernate.action.EntityDeleteAction.execute(EntityDeleteAction.java:74)
at org.hibernate.engine.ActionQueue.execute(ActionQueue.java:250)
at org.hibernate.engine.ActionQueue.executeActions(ActionQueue.java:234)
at org.hibernate.engine.ActionQueue.executeActions(ActionQueue.java:146)
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.JDBCTransaction.commit(JDBCTransaction.java:106)
at org.jbpm.persistence.db.DbPersistenceService.commit(DbPersistenceService.java:260)
at org.jbpm.persistence.db.DbPersistenceService.close(DbPersistenceService.java:218)
at org.jbpm.svc.Services.close(Services.java:223)
at org.jbpm.JbpmContext.close(JbpmContext.java:139)
at org.jbpm.job.executor.JobExecutorThread.executeJob(JobExecutorThread.java:193)
at org.jbpm.job.executor.JobExecutorThread.run(JobExecutorThread.java:64)
but if the transition of the timer dosen't point to a fork,for example a state ,there
won't have such exception. can angbody help me?
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