[jboss-user] [JBoss jBPM] - java.lang.ClassCastException: org.hibernate.collection.Persi

[ricardomarques]

Hi guys

I'm having this exception:


  | 15:22:17,093 ERROR [STDERR] java.lang.ClassCastException: org.hibernate.collection.PersistentList
  | 15:22:17,093 ERROR [STDERR] 	at com.pep.workflow.console.beans.Task.fetchComments(Task.java:188)
  | 15:22:17,093 ERROR [STDERR] 	at com.pep.workflow.console.beans.Task.initialize(Task.java:238)
  | 15:22:17,093 ERROR [STDERR] 	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
  | 15:22:17,093 ERROR [STDERR] 	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
  | 15:22:17,500 ERROR [STDERR] 	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
  | 15:22:17,500 ERROR [STDERR] 	at java.lang.reflect.Method.invoke(Method.java:585)
  | 15:22:17,500 ERROR [STDERR] 	at org.apache.myfaces.el.MethodBindingImpl.invoke(MethodBindingImpl.java:129)
  | 15:22:17,500 ERROR [STDERR] 	at org.apache.myfaces.application.ActionListenerImpl.processAction(ActionListenerImpl.java:63)
  | 15:22:17,500 ERROR [STDERR] 	at javax.faces.component.UICommand.broadcast(UICommand.java:106)
  | 15:22:17,500 ERROR [STDERR] 	at javax.faces.component.UIData.broadcast(UIData.java:513)
  | 15:22:17,500 ERROR [STDERR] 	at javax.faces.component.UIViewRoot._broadcastForPhase(UIViewRoot.java:94)
  | 15:22:17,500 ERROR [STDERR] 	at javax.faces.component.UIViewRoot.processApplication(UIViewRoot.java:168)
  | 15:22:17,500 ERROR [STDERR] 	at org.apache.myfaces.lifecycle.LifecycleImpl.invokeApplication(LifecycleImpl.java:343)
  | 15:22:17,500 ERROR [STDERR] 	at org.apache.myfaces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:86)
  | 15:22:17,500 ERROR [STDERR] 	at javax.faces.webapp.FacesServlet.service(FacesServlet.java:137)
  | 15:22:17,500 ERROR [STDERR] 	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
  | 15:22:17,500 ERROR [STDERR] 	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
  | 15:22:17,500 ERROR [STDERR] 	at org.apache.myfaces.webapp.filter.ExtensionsFilter.doFilter(ExtensionsFilter.java:147)
  | 15:22:17,500 ERROR [STDERR] 	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
  | 15:22:17,500 ERROR [STDERR] 	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
  | 15:22:17,500 ERROR [STDERR] 	at org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96)
  | 15:22:17,500 ERROR [STDERR] 	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
  | 15:22:17,500 ERROR [STDERR] 	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
  | 15:22:17,500 ERROR [STDERR] 	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213)
  | 15:22:17,500 ERROR [STDERR] 	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:178)
  | 15:22:17,500 ERROR [STDERR] 	at org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:175)
  | 15:22:17,500 ERROR [STDERR] 	at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:74)
  | 15:22:17,500 ERROR [STDERR] 	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126)
  | 15:22:17,500 ERROR [STDERR] 	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105)
  | 15:22:17,500 ERROR [STDERR] 	at org.jboss.web.tomcat.tc5.jca.CachedConnectionValve.invoke(CachedConnectionValve.java:156)
  | 15:22:17,500 ERROR [STDERR] 	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107)
  | 15:22:17,500 ERROR [STDERR] 	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148)
  | 15:22:17,500 ERROR [STDERR] 	at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:869)
  | 15:22:17,500 ERROR [STDERR] 	at org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:664)
  | 15:22:17,500 ERROR [STDERR] 	at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:527)
  | 15:22:17,500 ERROR [STDERR] 	at org.apache.tomcat.util.net.MasterSlaveWorkerThread.run(MasterSlaveWorkerThread.java:112)
  | 15:22:17,500 ERROR [STDERR] 	at java.lang.Thread.run(Thread.java:595)
  | 15:22:17,500 ERROR [Task] Error initializing task page: java.lang.ClassCastException: org.hibernate.collection.PersistentList
  | 

while executing this code using the command interface:


  | public Object execute(JbpmContext jbpmContext) throws Exception {
  | 
  |         TaskInstance taskInstance = jbpmContext.getTaskInstance(this.taskInstanceId);
  |         
  |         List comments = taskInstance.getComments();
  |         
  |         return comments;
  |     }

This is a very simple code, and by the output i supose that the problem comes from hibernate, that i don't have knowledge of it.

Any ideia that  it could be?

Thanks

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