Remote Invokation of EJB 3 on OAS 10.1.3.3 from OAS 10.1.2.2

Question

The setup is as follows:-
1. I have OAS 10.1.2.2 on System 1.
2. I have OAS 10.1.3.3 on System 2.
3. I have deployed a simple EJB 3 on System 2.
4. Now I do a remote lookup for the EJB 3 as follows:-
String lookupName = "SampleEJB";
Hashtable env = new Hashtable();
env.put( Context.INITIAL_CONTEXT_FACTORY, "com.evermind.server.rmi.RMIInitialContextFactory" );
env.put( Context.SECURITY_PRINCIPAL, "oc4jadmin" );
env.put( Context.SECURITY_CREDENTIALS, "welcome1" );
env.put(Context.PROVIDER_URL, PROVIDER_URL);
env.put("dedicated.connection","true");
Context context = new InitialContext( env );
Object obj = context.lookup(lookupName);
SampleEJB sample = (SampleEJB) obj;
As can be seen above, I am using "com.evermind.server.rmi.RMIInitialContextFactory" as the Initial Context Factory which is part of oc4jclient.jar of OAS 10.1.2.2. The lookup goes well. But when I try to type cast to the business interface of EJB3, I get "java.lang.ClassCastException".
I printed the object "obj" retrieved from the lookup. It is an instance of "javax.naming.Reference" referencing to "javax.ejb.EJBObject". Because of this the "java.lang.ClassCastException" is obvious, as the "SampleEJB" object to which I am trying to do a explicit type cast is a plain Java interface.
I guess the reason for getting a "javax.naming.Reference" referencing to "javax.ejb.EJBObject" because I am using "com.evermind.server.rmi.RMIInitialContextFactory" as the Initial Context Factory which is used for looking up EJB2. I know that we need to use "oracle.j2ee.rmi.RMIInitialContextFactory" for looking up EJB3 which is part of oc4jclient.jar of OAS 10.1.3.3. But I can't use this Initial Context Factory here as it is not available in OAS 10.1.2.2.
Can someone let me know how this can be accomplished.

Answer 1

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