Unable to access EJB from servlet

Question

Hi,
I have in service method my servlet code.
Hashtable env = new Hashtable();
                    env.put(Context.INITIAL_CONTEXT_FACTORY, "com.evermind.server.ApplicationInitialContextFactory");
                    env.put(Context.PROVIDER_URL, "ormi://localhost/hello");
                    env.put(Context.SECURITY_PRINCIPAL, "admin");
                    env.put(Context.SECURITY_CREDENTIALS, "mypwd");
                    Context ctx = new InitialContext(env);
          Object obj = ctx.lookup("HelloName");
                    HelloHome home = (HelloHome) javax.rmi.PortableRemoteObject.narrow(obj, HelloHome.class);
                    Hello hello = home.create();
this is how i have orion-ejb-jar.xml
     <enterprise-beans>
          <session-deployment name="Hello" location="HelloName" >
          </session-deployment>
     </enterprise-beans>
     ejb-jar.xml
          <session>
               <ejb-name>Hello</ejb-name>
               <home>examples.HelloHome</home>
               <remote>examples.Hello</remote>
               <local-home>examples.HelloLocalHome</local-home>
               <local>examples.HelloLocal</local>
               <ejb-class>examples.HelloBean</ejb-class>
               <session-type>Stateless</session-type>
               <transaction-type>Container</transaction-type>
          </session>
When i access the servlet i get this error.
javax.naming.NameNotFoundException: HelloName not found
     at com.evermind.server.rmi.RMIContext.lookup(RMIContext.java:149)
     at com.evermind.server.ApplicationContext.lookup(ApplicationContext.java:217)
     at com.evermind.server.ApplicationContext.lookup(ApplicationContext.java:88)
     at javax.naming.InitialContext.lookup(InitialContext.java:345)
     at examples.HelloServlet.service(Unknown Source)
     at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
     at com.evermind.server.http.ServletRequestDispatcher.invoke(ServletRequestDispatcher.java:772)
     at com.evermind.server.http.ServletRequestDispatcher.forwardInternal(ServletRequestDispatcher.java:317)
     at com.evermind.server.http.HttpRequestHandler.processRequest(HttpRequestHandler.java:782)
     at com.evermind.server.http.HttpRequestHandler.run(HttpRequestHandler.java:270)
     at com.evermind.server.http.HttpRequestHandler.run(HttpRequestHandler.java:112)
     at com.evermind.util.ReleasableResourcePooledExecutor$MyWorker.run(ReleasableResourcePooledExecutor.java:186)
     at java.lang.Thread.run(Thread.java:479)
Is location attribute in orion-ejb-jar.xml used to specify JNDI name? Can i get the JNDI tree showing the name mappings in oc4j? How do i correct this error?
Ravi

Answer 1

Ravi --
The most portable and standards oriented solution is to define an ejb-ref in the web.xml for the servlet, and then look up the name using the formal EJB UNC model.
web.xml:
<ejb-ref>
<ejb-ref-name>ejb/AppSessionFacadeHome</ejb-ref-name>
<ejb-ref-type>Session</ejb-ref-type>
<home>faqapp.ejb.AppSessionFacadeHome</home>
<remote>faqapp.ejb.AppSessionFacade</remote>
</ejb-ref>
servlet lookup
InitialContext ctx = new InitialContext();
Object homeObject = ctx.lookup("java:comp/env/ejb/AppSessionFacadeHome");
EJBHome ejbHome = (EJBHome)
portableRemoteObject.narrow (homeObject, AppSessionFacadeHome.class);
cheers
-steve-