Process archive classes:ClassNotFoundException
Hi all,
I have installed JBpm 3.2.3 on JBoss 4.2.3.GA and I have created the following simple process:
<?xml version="1.0" encoding="UTF-8"?> <process-definition xmlns="urn:jbpm.org:jpdl-3.2" name="sample"> <start-state name="start"> <transition to="a-node"></transition> </start-state> <node name="a-node"> <event type="node-enter"> <action name="node-enter" class="sample.process.NodeHandler"></action> </event> <transition to="end"></transition> </node> <end-state name="end"></end-state> </process-definition>
where NodeHandler is the delegation class where I need to invoke an EJB method (the EJB is already deployed in JBoss):
public class NodeHandler implements ActionHandler {
private static final String MANAGER_HOME_JNDI = "ejb/Manager";
@Override
public void execute(ExecutionContext context) throws Exception {
Properties env = new Properties();
// ... setting Context.INITIAL_CONTEXT_FACTORY, Context.PROVIDER_URL, Context.URL_PKG_PREFIXES ...
InitialContext context = null;
try {
context = new InitialContext(env);
Object homeObject = context.lookup(Constants.MANAGER_HOME_JNDI);
ManagerHome home = (ManagerHome) PortableRemoteObject.narrow(homeObject, ManagerHome.class);
Manager manager = home.create();
// ... invoking manager business methods...
} finally {
if (context != null) {
try {
context.close();
} catch (Exception e) {
// ignored
}
}
}
}
}
In the process archive are present all needed classes like NodeHandler and, of course, the home / remote interfaces of the EJB. The directory structure is the following:
sample.par | +- processdefinition.xml +- gpd.xml +- processimage.jpg | + classes +- sample +- manager +-- intefaces +-- Manager.class // EJB Remote Interface +-- ManagerHome.class // EJB Home Interface +- process +-- NodeHandler.class
I deploy this process archive into Jbpm by the console without any warning or errors. But when I create a process instance and I signal the instance (to move from "start" node to "a-node") I obtain the exception reported at the end.
I have looked into JBPM_BYTEARRAY / JBPM_BYTEBLOCK tables and there is a row that refers to class ManagerHome.
So why Jbpm cannot find them?
There is some other way to use an EJB into Jbpm action delegation classes?
Regards.
javax.naming.CommunicationException [Root exception is java.lang.ClassNotFoundException: sample.manager.interfaces.ManagerHome (no security manager: RMI class loader disabled)]
at org.jnp.interfaces.NamingContext.lookup(NamingContext.java:786)
at org.jnp.interfaces.NamingContext.lookup(NamingContext.java:627)
at javax.naming.InitialContext.lookup(InitialContext.java:392)
at sample.process.sample.NodeHandler.execute(NodeHandler.java:37)
at org.jbpm.graph.def.Action.execute(Action.java:122)
at org.jbpm.graph.def.GraphElement.executeAction(GraphElement.java:259)
at org.jbpm.graph.def.GraphElement.executeActions(GraphElement.java:215)
at org.jbpm.graph.def.GraphElement.fireAndPropagateEvent(GraphElement.java:185)
at org.jbpm.graph.def.GraphElement.fireEvent(GraphElement.java:169)
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:597)
at org.hibernate.proxy.pojo.javassist.JavassistLazyInitializer.invoke(JavassistLazyInitializer.java:173)
at org.jbpm.graph.def.Node_$$_javassist_80.enter(Node_$$_javassist_80.java)
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:597)
at org.hibernate.proxy.pojo.javassist.JavassistLazyInitializer.invoke(JavassistLazyInitializer.java:173)
at org.jbpm.graph.def.Node_$$_javassist_80.leave(Node_$$_javassist_80.java)
at org.jbpm.graph.exe.Token.signal(Token.java:192)
at org.jbpm.graph.exe.Token.signal(Token.java:140)
at org.jbpm.jsf.core.action.SignalActionListener.handleAction(SignalActionListener.java:52)
at org.jbpm.jsf.core.impl.JbpmActionListenerWrapper.processAction(JbpmActionListenerWrapper.java:82)
at javax.faces.event.ActionEvent.processListener(ActionEvent.java:88)
at javax.faces.component.UIComponentBase.broadcast(UIComponentBase.java:771)
at javax.faces.component.UICommand.broadcast(UICommand.java:372)
at javax.faces.component.UIViewRoot.broadcastEvents(UIViewRoot.java:475)
at javax.faces.component.UIViewRoot.processApplication(UIViewRoot.java:755)
at com.sun.faces.lifecycle.InvokeApplicationPhase.execute(InvokeApplicationPhase.java:82)
at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:100)
at com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:118)
at javax.faces.webapp.FacesServlet.service(FacesServlet.java:265)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:230)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175)
at org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:182)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:524)
at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:84)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
at org.jboss.web.tomcat.service.jca.CachedConnectionValve.invoke(CachedConnectionValve.java:157)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:262)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:844)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583)
at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:446)
at java.lang.Thread.run(Thread.java:619)
Caused by: java.lang.ClassNotFoundException: sample.manager.interfaces.PollerManagerHome (no security manager: RMI class loader disabled)
at sun.rmi.server.LoaderHandler.loadProxyClass(LoaderHandler.java:535)
at java.rmi.server.RMIClassLoader$2.loadProxyClass(RMIClassLoader.java:628)
at org.jboss.system.JBossRMIClassLoader.loadProxyClass(JBossRMIClassLoader.java:82)
at java.rmi.server.RMIClassLoader.loadProxyClass(RMIClassLoader.java:294)
at sun.rmi.server.MarshalInputStream.resolveProxyClass(MarshalInputStream.java:238)
at java.io.ObjectInputStream.readProxyDesc(ObjectInputStream.java:1531)
at java.io.ObjectInputStream.readClassDesc(ObjectInputStream.java:1493)
at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1732)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1329)
at java.io.ObjectInputStream.readObject(ObjectInputStream.java:351)
at java.rmi.MarshalledObject.get(MarshalledObject.java:142)
at org.jnp.interfaces.MarshalledValuePair.get(MarshalledValuePair.java:72)
at org.jnp.interfaces.NamingContext.lookup(NamingContext.java:710)
... 57 more
