JBoss Seam: components injected into POJOs, but not Session Beans

Posted by purecharger on Stack Overflow See other posts from Stack Overflow or by purecharger
Published on 2010-03-08T19:59:16Z Indexed on 2010/03/08 21:51 UTC
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I have a Seam component that handles login, with the name "authenticator":

@Name("authenticator")
public class AuthenticatorAction implements Authenticator
{
    @PersistenceContext 
    private EntityManager em;

    @In(required=false)   
    @Out(required=false, scope = SESSION)
    private User user;

    public boolean authenticate(){ ... }

}

This works just fine, Seam injects the EntityManager instance. However, as soon as I add the @Stateless annotation, none of the injection happens! In this case, the EntityManager instance is null upon entry to the authenticate() method. Another interesting note is that with a separate stateful session bean I have, the Logger instance in that class is only injected if I make it static. If i have it non-static, it is not injected. Thats fine for the logger, but for stateless session beans like that, I obviously can't have static member variables for these components.

I'm confused because this authenticator is exactly how it is in the Seam booking example: a stateless session bean with a private member variable being injected.

Any ideas?

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