EJB Handle return remote ref fails??

Question

Having a problem getting a remote reference on an EJB using a handle. Create a remote ref to an EJB and store three items and display said items - okay
Get a handle to the remote ref and serialize and store - okay
Deserialize - okay
Cast to remote ref - NOT okay wants a home ref?
This example is, by and large, similar to the example in section 6.8 of the EJB 2.0 Spec.
Need to know why I cannot get the remote ref returned? Is there an OC4J issue? Please let me know when you can as would like to use this in a class.
THANKS - Ken Cooper
public class CartClient {
public static void main(String[] args) {
CartClient cartClient = new CartClient();
try {
Context context = getInitialContext();
CartHome cartHome = (CartHome) PortableRemoteObject.narrow(context.lookup(
"Cart"), CartHome.class);
Cart cart;
// Use one of the create() methods below to create a new instance
cart = cartHome.create();
// Call any of the Remote methods below to access the EJB
// cart.getItems( );
// cart.addItems( java.lang.String p );
cart.addItems("Truck");
cart.addItems("Car");
cart.addItems("Boat");
System.out.println(cart.getItems());
// Serialize and store in C:\cartHandle
Handle cartHandle = cart.getHandle();
FileOutputStream out = new FileOutputStream("C:/cartHandle");
ObjectOutputStream so = new ObjectOutputStream(out);
so.writeObject(cartHandle);
so.flush();
System.out.println("Serialized");
// Deserialize from C:\cartHandle
FileInputStream in = new FileInputStream("C:/cartHandle");
ObjectInputStream si = new ObjectInputStream(in);
cartHandle = (Handle) si.readObject();
System.out.println("DeSerialized");
Cart cart2 = (Cart) PortableRemoteObject.narrow(cartHandle.getEJBObject(),
Cart.class);
System.out.println("Second: " + cart2.getItems());
} catch (Throwable ex) {
ex.printStackTrace();
private static Context getInitialContext() throws NamingException {
Hashtable env = new Hashtable();
env.put(Context.INITIAL_CONTEXT_FACTORY,
"com.evermind.server.rmi.RMIInitialContextFactory");
env.put(Context.SECURITY_PRINCIPAL, "admin");
env.put(Context.SECURITY_CREDENTIALS, "welcome");
env.put(Context.PROVIDER_URL,
"ormi://localhost:23891/current-workspace-app");
return new InitialContext(env);
OUTPUT AND ERROR FROM EXECUTION
C:\JDev9031\jdk\bin\javaw.exe -ojvm -classpath C:\JDev9031\jdev\mywork\del15aug\Project4\classes;......
Start: TruckCarBoat
Serialized
DeSerialized
com.evermind.server.rmi.OrionRemoteException: Error looking up EJBHome at location 'Cart'
javax.ejb.EJBObject com.evermind.server.ejb.StatefulSessionHandle.getEJBObject()
StatefulSessionHandle.java:56
void mypackage4.CartClient.main(java.lang.String[])
CartClient.java:53 (NOTE: The highlighted line above is line 53)

Answer 1

Thank you all guys for your suggests, and sorry for my (long) silence: i was at home with hard cough. I think that unfortunally the problem is more in deep. This because:
1) at the beginnnig, in my (many) attempts I've tried to give the server url in a lot of ways:
a) only the IP;
b) http://<IP>;
c) http://<IP>: <port>;
d) http://<server-name>;
e) http://<server-name>:<server-port>;
b) iiop://<IP>;
c) iiop://<IP>: <port>;
d) iiop://<server-name>;
e) iiop://<server-name>:<server-port>;
In this cases, using init.put(org.omg.CORBA.ORBInitialHost,<param-value>) (init is Java Properties object), I didn't get what I would: always AppServer running on Win2000 responded me, instead of the one running on Linux.
Using instead using init.put(Context.PROVIDER_URL,<param-value>) , in case a) I got the error message Root exception is java.net.MalformedURLException: no protocol:<IP-number>. In case b), c), d) and e) I got invalid url - connection refused error message (Invalid URL: http://gandalf.engiweb.com. Root exception is java.net.ConnectException: Connection refused: connect).
A collegue of mine is using WebSphere and everything seems to work correctly. I'm afraid that there is a problem (of misconfiguration?) in the Borland Application Server. This is a problem, because, if I have (suppose) server gandalf running, with the correct EJB, and the server Saruman running too, but with the scorrect EJB, or the ejb container down, always respond me Saruman, not Gandalf: my tests gave me this result.
At the moment I don't know what to do, except migrate to WebSphere, or another Application Server.
Thank you a lot for your interest. Bye!