Return reference to another session bean

[vijayk]

Hello,

Can a stateless session bean have a method that can lookup, create and return a reference to a stateful session bean?

When I try to do that, I get this stack trace:
java.rmi.ServerException: RemoteException occurred in server thread; nested exception is:
java.rmi.ServerException: RuntimeException; nested exception is:
java.lang.NullPointerException
java.rmi.ServerException: RuntimeException; nested exception is:
java.lang.NullPointerException
java.lang.NullPointerException
at sun.rmi.transport.StreamRemoteCall.exceptionReceivedFromServer(StreamRemoteCall.java:245)

Can someone help?

Thanks.

[adrian.brock]

> java.rmi.ServerException: RemoteException occurred in server thread;

And the message on the server is?

Regards,
Adrian

[vijayk]

Thank you! That pointed me to my problem. I was passing a Java bean (not an ejb) as a method parameter and within the session bean, I get a NullPointerException

Could anyone help me with how a Java bean should be passed to an EJB?

-Vijay

[adrian.brock]

I don't understand your question.

If you are invoking remotely it will be serialized.

Regards,
Adrian

[vijayk]

If its not too much to ask could you please help me here:

I have a Java bean (which implements Serializable) that has a HashMap. A client fills in this map and creates a Stateful Session bean and remotely invokes a method with this map. For some reason, within the session bean, I can not retrieve any keys - they are null.

Where am I supposed to check to see whats wrong?

Thank you very much.

-Vijay