Lookup EJB via JNDI

[hipa]

How can I lookup EJB via JNDI like @EJB annotation do it? I don't know neither application name nor bean name at compile time.

...
@EJB
private BeanLocal bean;
...

I tried using InitialContext:

new InitialContext().lookup("BeanLocal/local");

It doesn't work because of I need to specifiy application name here:

new InitialContext().lookup("MyApp/BeanLocal/local");

Then I tried using java:comp/env:

...
@Resource
private EJBContext ctx;
...
 ctx.lookup("BeanLocal");
...

But it always returns null. It's because of my java:comp/env includes only the current bean.

I know there must be a method to lookup EJB. If not how does @EJB annotation work (I couldn't find implementation of @EJB annotation in JBoss 5.0.0 sources)?

[jaikiran]

Post the code of your bean.

It doesn't work because of I need to specifiy application name here:

new InitialContext().lookup("MyApp/BeanLocal/local");

That's the default JNDI name given to the bean. You can override it by using @RemoteBinding or @LocalBinding annotation on your bean. Here's an example:

import org.jboss.ejb3.annotation.LocalBinding;
import org.jboss.ejb3.annotation.RemoteBinding;

@Stateless
@LocalBinding (jndiBinding="MyUserManagerBeanLocal")
@RemoteBinding (jndiBinding = "MyUserManagerBeanRemote")
public class UserManagerBean implements UserManagerLocal, UserManagerRemote {

You can then use the MyUserManagerBeanLocal or MyUserManagerBeanRemote as the jndi name in the JNDI lookup.

[hipa]

I can't modify bean that I want to lookup.

@Local
public interface LookupBeanLocal
{
 public Object lookup(String name);
}

@Stateless
public class LookupBean implements LookupBeanLocal
{
 public Object lookup(String name)
 {
 // Here I need to get bean with name 'name'
 }
}

Then in other bean I want to get bean by name like @EJB annotation can do:

@Stateless
public class MyBean implements MyBeanLocal
{
 @EJB
 private LookupBeanLocal lookupBean;

 @EJB(name = "MyBean")
 private MyBeanLocal myBean;

 public void test()
 {
 MyBeanLocal me = (MyBeanLocal) lookupBean.lookup("MyBean");
 assert myBean.equals(me);
 }
}