dev@glassfish.java.net

PortableRemoteObject.narrow() problem with MEJB

From: Lloyd Chambers <Lloyd.Chambers_at_Sun.COM>
Date: Fri, 10 Apr 2009 16:54:20 -0700

This is the V3 trunk, active development. I've been tasked with
implementing MEJB, the JSR 77 Management EJB.

I'm a newbie at EJB, any ideas are appreciated— I'm having a problem
where PortableRemoteObject.narrow() returns null.

The app is deployed fine:

INFO: Deployment expansion took 10
INFO: DOL Loading time64
Apr 10, 2009 4:51:34 PM
com.sun.enterprise.security.provider.PolicyConfigurationImpl
generatePermissions
WARNING: No Principals mapped to Role [admin-role].
Apr 10, 2009 4:51:34 PM com.sun.ejb.containers.BaseContainer
initializeHome
INFO: Portable JNDI names for EJB MEJBBean : [java:global/MEJB/
MEJBBean, java:global/MEJB/MEJBBean!org.glassfish.admin.mejb.MEJBHome]
Apr 10, 2009 4:51:34 PM com.sun.ejb.containers.BaseContainer
initializeHome
INFO: Glassfish-specific (Non-portable) JNDI names for EJB MEJBBean :
[org.glassfish.admin.mejb.MEJBHome]
Apr 10, 2009 4:51:34 PM
INFO: ==> Uses Timers? == false
Apr 10, 2009 4:51:34 PM org.glassfish.deployment.admin.DeployCommand
execute
INFO: Deployment of MEJB done is 156 ms

My test code is below. When I run it, an IOR exists, so I presume
this means that the ejb can be seen and referenced.

But I get null from PortableRemoteObject.narrow().


Got ref: IOR:
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
  for java:global/MEJB/MEJBBean
Got ManagementHome: null for java:global/MEJB/MEJBBean
Caught an unexpected exception!
java.lang.NullPointerException
         at org.glassfish.admin.mejb.test.MEJBTest.main(MEJBTest.java:
48)




     public static void main(String[] args) {
         try {
             final Properties env = new Properties();
             env.put("java.naming.factory.initial",
"com.sun.jndi.cosnaming.CNCtxFactory");
             env.put("java.naming.provider.url", "iiop://localhost:
3700");

             final Context initial = new InitialContext(env);

             //final String mejbName = MEJBUtility.MEJB_DEFAULT_NAME;
             final String mejbName = "java:global/MEJB/MEJBBean";
             final Object objref = initial.lookup(mejbName);
             println("Got ref: " + objref + " for " + mejbName);

             final ManagementHome home =
(ManagementHome)PortableRemoteObject.narrow(objref,
ManagementHome.class);
             println("Got ManagementHome: " + home + " for " +
mejbName);

             final Management mejb = home.create();
             println("Got the MEJB");

             test(mejb);

             mejb.remove();


         } catch (Exception ex) {
             System.err.println("Caught an unexpected exception!");
             ex.printStackTrace();
         }
     }
}


Lloyd Chambers
lloyd.chambers_at_sun.com
GlassFish Team