Support for "self" injection or intercepted self invocation

Many features of CDI and EJB work by means of a proxy that intercepts calls and adds 'aspects'. In Java it's however not possible to decorate the this pointer, so methods called on the same bean instance from within a method in the bean do not get their 'aspects' applied.

This is a well known limitation, but in EJB it's possible to work around this by injecting a bean into itself. E.g.

@Stateless
public class Foo {

    @EJB
    private Foo self;

    // ...
}

Also see http://adam-bien.com/roller/abien/entry/how_to_self_invoke_ejb

Unfortunately using CDI and @Inject this doesn't work. Weld for instance fails the deployment and logs:

WELD-001443 Pseudo scoped bean has circular dependencies.

See also: http://adam-bien.com/roller/abien/entry/inject_vs_ejb

Although there are workarounds, it would be great if @Inject in combination with CDI could support self injection as well.

With that projects migrating from @EJB to @Inject can do so more easily and the capability can be convenient for new projects as well (e.g. calling two separate @Transactional methods from a single method without being required to create a new bean).