ActionHandler and ClassCastException
Hi, I'm a new user en jbpm and I have one problem executing an Action.
Here is the error
DEBUG - JbpmContextInfo - creating jbpm context with service factories '[tx, message, scheduler, logging, persistence, authentication]' DEBUG - JbpmContext - creating org.jbpm.JbpmContext@6018e0 DEBUG - bPersistenceServiceFactory - creating persistence service DEBUG - DbPersistenceService - creating hibernate session DEBUG - DbPersistenceService - beginning hibernate transaction DEBUG - DbPersistenceService - begun hibernate transaction org.hibernate.transaction.JTATransaction@6431f DEBUG - GraphElement - event 'before-signal' on 'StartState(Solicitar Vacaciones)' for 'Token(/)' DEBUG - GraphElement - event 'node-leave' on 'StartState(Solicitar Vacaciones)' for 'Token(/)' DEBUG - GraphElement - event 'transition' on 'Transition(ObtenerDias)' for 'Token(/)' DEBUG - GraphElement - event 'node-enter' on 'Node(Determinar Dias Disponibles)' for 'Token(/)' DEBUG - GraphElement - executing action 'action[DeterminarDias]' DEBUG - Token - token[2] is locked by token[2] DEBUG - Token - token[2] is unlocked by token[2] ERROR - GraphElement - action threw exception: jbpm.SpringInvocationHandler java.lang.ClassCastException: jbpm.SpringInvocationHandler at org.jbpm.graph.def.Action.execute(Action.java:121) 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.enter(Node.java:302) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:585) at org.hibernate.proxy.pojo.cglib.CGLIBLazyInitializer.invoke(CGLIBLazyInitializer.java:157) at org.jbpm.graph.def.Node$$EnhancerByCGLIB$$a160d766.enter(<generated>) 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 sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:585) at org.hibernate.proxy.pojo.cglib.CGLIBLazyInitializer.invoke(CGLIBLazyInitializer.java:157) at org.jbpm.graph.def.Node$$EnhancerByCGLIB$$a160d766.leave(<generated>) at org.jbpm.graph.exe.Token.signal(Token.java:194) at org.jbpm.graph.exe.Token.signal(Token.java:157) at org.jbpm.jsf.core.action.SignalActionListener.handleAction(SignalActionListener.java:56) at org.jbpm.jsf.core.impl.JbpmActionListenerWrapper.processAction(JbpmActionListenerWrapper.java:82) at javax.faces.event.ActionEvent.processListener(ActionEvent.java:77) at javax.faces.component.UIComponentBase.broadcast(UIComponentBase.java:758) at javax.faces.component.UICommand.broadcast(UICommand.java:368) at javax.faces.component.UIViewRoot.broadcastEvents(UIViewRoot.java:448) at javax.faces.component.UIViewRoot.processApplication(UIViewRoot.java:752) at com.sun.faces.lifecycle.InvokeApplicationPhase.execute(InvokeApplicationPhase.java:97) at com.sun.faces.lifecycle.LifecycleImpl.phase(LifecycleImpl.java:248) at com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:117) at javax.faces.webapp.FacesServlet.service(FacesServlet.java:244) 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.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:524) 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:613) DEBUG - JbpmContext - closing JbpmContext DEBUG - Services - executing default save operations DEBUG - HibernateSaveOperation - saving process instance DEBUG - SaveLogsOperation - flushing logs to logging service. DEBUG - CascadeSaveOperation - cascading save of 'org.jbpm.graph.exe.ProcessInstance@59fe79' DEBUG - Services - closing service 'persistence': org.jbpm.persistence.db.DbPersistenceService@9e160a DEBUG - DbPersistenceService - rolling back hibernate transaction DEBUG - DbPersistenceService - closing hibernate session
and this is the code of the handler:
public class SpringInvocationHandler implements ActionHandler
{
private String oResultVariable;
private String sWSServiceUrl;
private String sBeanName;
private String sExtraParam;
/**
* @see org.jbpm.graph.def.ActionHandler#execute(org.jbpm.graph.exe.ExecutionContext)
*/
public void execute( final ExecutionContext executionContext )
{
try
{
final Map<Object, Object> oProcessParams =
(Map) executionContext.getProcessInstance().getContextInstance().getVariables();
if (sExtraParam != null)
{
String[] aMapContent = sExtraParam.split( "=" );
if (aMapContent != null && aMapContent.length == 2)
{
oProcessParams.put( aMapContent[0], aMapContent[1] );
}
}
final String sInstanceId =
String.valueOf( executionContext.getToken().getId() );
final String sProcessName =
executionContext.getToken().getNode().getName();
final Service serviceModel =
new ObjectServiceFactory().create( IWSFrontController.class );
final XFire xfire = XFireFactory.newInstance().getXFire();
final XFireProxyFactory factory = new XFireProxyFactory( xfire );
try
{
final IWSFrontController oSpringClient =
(IWSFrontController) factory.create( serviceModel, sWSServiceUrl );
final Object oResult =
oSpringClient.execute( sBeanName, sInstanceId, sProcessName, oProcessParams );
executionContext.setVariable( oResultVariable, oResult );
} catch (Exception e)
{
e.printStackTrace();
}
} catch (Exception e)
{
e.printStackTrace();
}
}
...
(plus the getter and setter of the fields).
I try the config-type field and bean whith the same result.
If I see the source code of Action (line 151) the error belong a manual cast and later execution of the handler. But if I try this:
String sConf = "<oResultVariable xmlns=\"urn:jbpm.org:jpdl-3.2\">result</oResultVariable><sBeanName xmlns=\"urn:jbpm.org:jpdl-3.2\">remaingTimesvc</sBeanName><sWSServiceUrl xmlns=\"urn:jbpm.org:jpdl-3.2\">http://10.0.0.126:8080/services/WSFrontController</sWSServiceUrl>"; Object o = new FieldInstantiator().instantiate( jbpm.SpringInvocationHandler.class, sConf ); ActionHandler o1 = (ActionHandler) o;
works fine.
The jbpm version is 3.2.1.
Any idea?
Thanks in advice.
