Is it possible to inject EJB implementation and not its interface using CDI?

Question

My configuration is: Wildfly 8.2.0, Weld

Is it possible to inject in bean and not in its interface in CDI ?

@Stateless
class Bean implements IBean {
...
         


        

Answer 1

Yes you can, but as EJB inject the business view the only business view you are exposing is the @Local view which is the default when you implement an interface (IBean in your case is a local business interface). So, if you want to inject the bean itself, you need to tell the container that you are using the no-interface view.

In your example, if you still want to implement your interface and inject Bean you should use the @LocalBean annotation which means that the bean exposes a no-interface view:

@Stateless
@LocalBean // <-- no-interface view
class Bean implements IBean {
...
}  

interface IBean {
....
}

@SessionScoped
class Scoped {
   @Inject
   Bean bean; //Should be OK
}

Or, If you don't want to implement any interface, then the bean defines by default a No-Interface view:

@Stateless
class Bean {
...
}  

@SessionScoped
class Scoped {
   @Inject
   Bean bean; //OK
}

See also:

• What is local/remote and no-interface view in EJB?
• Defining EJB 3.1 Views (Local, Remote, No-Interface)
• EJB 3.1 @LocalBean vs no annotation