Timer problem
I am testing a very simple process containing only one node, in which a basic timer is declared. The process is called by the doGet method of a basic servlet :
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
// config
JbpmConfiguration jbpmConfiguration = (JbpmConfiguration) SpringHelper.getBean(SpringBeans.JBPM_CONFIGURATION);
JbpmContext jbpmContext = jbpmConfiguration.createJbpmContext();
ProcessDefinition processDefinition = ProcessDefinition.parseXmlString(
"<process-definition name=\"toto\" >"+
"<start-state name=\"start'\">"+
"<transition name=\"\" to=\"TimerNode\"></transition>"+
"</start-state>"+
"<node name=\"TimerNode\"> "+
"<timer name=\"Timer\" "+
"duedate=\"1 business minute\" >"+
"</timer>"+
"<transition name=\"\" to=\"end1\"></transition>"+
"</node>"+
"<end-state name=\"end1\"></end-state>"+
"</process-definition>"
);
ProcessInstance instance = new ProcessInstance(processDefinition);
jbpmContext.save(instance);
instance.signal();
}
The process is instantiated correctly, but I get Hibernate errors when the the signal() method is called :
10:17:20,117 INFO [STDOUT] 10:17:20,117 ERROR [[ServletTestJbpm]] Servlet.service() for servlet ServletTestJbpm threw exception org.jbpm.JbpmException: couldn't cancel timers 'Timer' for 'Token(/)' at org.jbpm.db.JobSession.cancelTimersByName(JobSession.java:178) at org.jbpm.scheduler.db.DbSchedulerService.deleteTimersByName(DbSchedulerService.java:47) at org.jbpm.scheduler.def.CancelTimerAction.execute(CancelTimerAction.java:46) at org.jbpm.graph.def.GraphElement.executeAction(GraphElement.java:255) at org.jbpm.graph.def.GraphElement.executeActions(GraphElement.java:220) at org.jbpm.graph.def.GraphElement.fireAndPropagateEvent(GraphElement.java:190) at org.jbpm.graph.def.GraphElement.fireEvent(GraphElement.java:174) at org.jbpm.graph.def.Node.leave(Node.java:381) at org.jbpm.graph.def.Node.leave(Node.java:357) at org.jbpm.graph.def.Node.execute(Node.java:349) at org.jbpm.graph.def.Node.enter(Node.java:318) at org.jbpm.graph.def.Transition.take(Transition.java:151) at org.jbpm.graph.def.Node.leave(Node.java:393) at org.jbpm.graph.node.StartState.leave(StartState.java:70) at org.jbpm.graph.exe.Token.signal(Token.java:194) at org.jbpm.graph.exe.Token.signal(Token.java:139) at org.jbpm.graph.exe.ProcessInstance.signal(ProcessInstance.java:270) at com.bt.intfwk.testjbpm.ServletTestJbpm.doGet(ServletTestJbpm.java:66) at javax.servlet.http.HttpServlet.service(HttpServlet.java:697) at javax.servlet.http.HttpServlet.service(HttpServlet.java:810) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173) at org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:178) at org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:175) at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:74) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105) at org.jboss.web.tomcat.tc5.jca.CachedConnectionValve.invoke(CachedConnectionValve.java:156) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148) at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:869) at org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:664) at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:527) at org.apache.tomcat.util.net.MasterSlaveWorkerThread.run(MasterSlaveWorkerThread.java:112) at java.lang.Thread.run(Thread.java:595) Caused by: org.hibernate.TransientObjectException: object references an unsaved transient instance - save the transient instance before flushing: org.jbpm.graph.exe. ProcessInstance at org.hibernate.engine.ForeignKeys.getEntityIdentifierIfNotUnsaved(ForeignKeys.java:219) at org.hibernate.type.EntityType.getIdentifier(EntityType.java:397) at org.hibernate.type.ManyToOneType.isDirty(ManyToOneType.java:242) at org.hibernate.type.TypeFactory.findDirty(TypeFactory.java:597) at org.hibernate.persister.entity.AbstractEntityPersister.findDirty(AbstractEntityPersister.java:3123) at org.hibernate.event.def.DefaultFlushEntityEventListener.dirtyCheck(DefaultFlushEntityEventListener.java:472) at org.hibernate.event.def.DefaultFlushEntityEventListener.isUpdateNecessary(DefaultFlushEntityEventListener.java:197) at org.hibernate.event.def.DefaultFlushEntityEventListener.onFlushEntity(DefaultFlushEntityEventListener.java:120) at org.hibernate.event.def.AbstractFlushingEventListener.flushEntities(AbstractFlushingEventListener.java:196) at org.hibernate.event.def.AbstractFlushingEventListener.flushEverythingToExecutions(AbstractFlushingEventListener.java:76) at org.hibernate.event.def.DefaultAutoFlushEventListener.onAutoFlush(DefaultAutoFlushEventListener.java:35) at org.hibernate.impl.SessionImpl.autoFlushIfRequired(SessionImpl.java:969) at org.hibernate.impl.SessionImpl.list(SessionImpl.java:1114) at org.hibernate.impl.QueryImpl.list(QueryImpl.java:79) at org.jbpm.db.JobSession.cancelTimersByName(JobSession.java:166) ... 38 more
Help would be greatly appreciated.
