Unable to access Local SLSB from app client

[Karnati Sudhakar]

Hi,

I am trying to access local state less session bean from app client.Code is as below:

PracticeBean.java

package ejb;

import javax.ejb.Stateless;

@Stateless
public class PracticeBean implements PracticeLocal {

    public void JustdoItMethod() {
        System.out.println("From JustdoIt method");
    }
}

PracticeLocal.java

package ejb;

import javax.ejb.Local;

@Local
public interface PracticeLocal {

    public void JustdoItMethod();
}

and the client code:

Main.java

package amt;

import ejb.PracticeLocal;
import javax.naming.InitialContext;

public class Main {

    public static void main(String[] args) {

        try {
            InitialContext ic = new InitialContext();
            PracticeLocal practiceBean = (PracticeLocal) ic.lookup("PracticeLocal");
            practiceBean.JustdoItMethod();
        } catch (Exception e) {
            System.out.println("Error occured during look up is "+e.getMessage());
        }
    }
}

and the error i am getting is :

javax.naming.NameNotFoundException: PracticeLocal not found
at com.sun.enterprise.naming.TransientContext.doLookup(TransientContext.java:216)
at com.sun.enterprise.naming.TransientContext.lookup(TransientContext.java:188)
at com.sun.enterprise.naming.SerialContextProviderImpl.lookup(SerialContextProviderImpl.java:74)
at com.sun.enterprise.naming.RemoteSerialContextProviderImpl.lookup(RemoteSerialContextProviderImpl.java:129)
at sun.reflect.GeneratedMethodAccessor161.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at com.sun.corba.ee.impl.presentation.rmi.ReflectiveTie._invoke(ReflectiveTie.java:154)
at com.sun.corba.ee.impl.protocol.CorbaServerRequestDispatcherImpl.dispatchToServant(CorbaServerRequestDispatcherImpl.java:687)
at com.sun.corba.ee.impl.protocol.CorbaServerRequestDispatcherImpl.dispatch(CorbaServerRequestDispatcherImpl.java:227)
at com.sun.corba.ee.impl.protocol.CorbaMessageMediatorImpl.handleRequestRequest(CorbaMessageMediatorImpl.java:1846)
at com.sun.corba.ee.impl.protocol.CorbaMessageMediatorImpl.handleRequest(CorbaMessageMediatorImpl.java:1706)
at com.sun.corba.ee.impl.protocol.CorbaMessageMediatorImpl.handleInput(CorbaMessageMediatorImpl.java:1088)
at com.sun.corba.ee.impl.protocol.giopmsgheaders.RequestMessage_1_2.callback(RequestMessage_1_2.java:223)
at com.sun.corba.ee.impl.protocol.CorbaMessageMediatorImpl.handleRequest(CorbaMessageMediatorImpl.java:806)
at com.sun.corba.ee.impl.protocol.CorbaMessageMediatorImpl.dispatch(CorbaMessageMediatorImpl.java:563)
at com.sun.corba.ee.impl.protocol.CorbaMessageMediatorImpl.doWork(CorbaMessageMediatorImpl.java:2567)
at com.sun.corba.ee.impl.orbutil.threadpool.ThreadPoolImpl$WorkerThread.run(ThreadPoolImpl.java:555)

can any body suggest whats wrong i am doing here?

Regards
Sudhakar

[Treimin Clark]

How if you replace

PracticeLocal practiceBean = (PracticeLocal) ic.lookup("PracticeLocal"); 

with

PracticeLocal practiceBean = (PracticeLocal) ic.lookup("ejb.PracticeLocal"); 

[Raf Szczypiorski]

For example, Glassfish v2 doesn't bind local beans to JNDI. So, it is impossible to access local beans from client. This is not required by the specs, anyways, as it is a completely different JVM, and local really means local.

[Treimin Clark]

Raf, is it ok to use "PracticeLocal" instead of "ejb.PracticeLocal" ?

[Karnati Sudhakar]

Treminin,

Both PracticeLocal and ejb.PracticeLocal are not working.

For example, Glassfish v2 doesn't bind local beans to JNDI. So, it is impossible to access local beans from client. This is not required by the specs, anyways, as it is a completely different JVM, and local really means local.

so i cant access local session beans through initialContext. What about through SessionContext? any idea?

How can i access local session bean other than through annotations.

Thanks for your reply Raf and Treminin

Regards
Sudhakar

[Raf Szczypiorski]

You cannot access it using SessionContext - it uses JNDI under the hood. Also, SessionContext is not available to an application client to my knowledge. Apart from annotations, you can do it the old school way - ejb-jar.xml.

[Karnati Sudhakar]

You cannot access it using SessionContext - it uses JNDI under the hood. Also, SessionContext is not available to an application client to my knowledge. Apart from annotations, you can do it the old school way - ejb-jar.xml

Just checked the specs regarding EJBContext and it says that we cannot use this outside the container environment.

Thanks Raf for your help.

Regards
Sudhakar

[Hong Anderson]

Hm, I don't know, but I think it does not make sense to access Local beans from app clients, because an app client is running from a different JVM.

Please correct me if I'm wrong, I understand that "Local" means the same "JVM", not the same machine.

[Raf Szczypiorski]

You're correct ;-)

[Treimin Clark]

Treimin Clark wrote:Raf, is it ok to use "PracticeLocal" instead of "ejb.PracticeLocal" ?

[Raf Szczypiorski]

If you cannot lookup local beans, obviously neither will work ;-)

[Treimin Clark]

yes, but if I can?

[Karnati Sudhakar]

If you cannot lookup local beans, obviously neither will work ;-)

I doubt this because i tried with remote session beans but it did not work.It is working only when you give the fully qualified class name.

Regards
Sudhakar

[Marcin Faryna]

If your client is stand-alone application you must use Remote or Webservice interface to invoke EJB3 bean.