Re: [cdi-dev] Bean<T> that only qualifies super types?

No, an interface may be a bean type but not a bean class of a managed bean. For producer methods, the getBeanClass() returns the bean class of the bean that declares the producer method. The bean class is defacto an implementation class.

> > There's nothing wrong with that, is it? > > So by extension, is this wrong then? > > @Produces > public Foo produce() { > return new FooImpl(); > } This is OK. But the bean class of this producer is not Foo as mentioned above. > > > >> No, this is not possible. Qualifiers are tied to a bean definition, not >> to a >> bean type. > > > So this would possibly be an enhancement or new feature request then. > > > I did found a workaround though, which seems to work because the Type > I'd like to hide happens to have generic parameters: > > private static class Dummy {} > > @Override > public Set<Type> getTypes() { > return new HashSet<Type>(asList(Foo.class, > ParameterizedTypeImpl(Map.class, new Type[]{Dummy.class, > Dummy.class}))); > } > > With those types the proxy that's generated contains methods for both > Foo and Map, but because the generic parameters are the private class, > the client application can never declare an injection point for this > (certain not accidentally). > > Another possible workaround I thought of is using a second Bean<T> > that only has Foo as its type and is @Dependent scoped, which then > asks the bean manager for an instance of a qualified Foo (qualifier is > of a private type). If I'm not mistaken the first Bean<T> would then > be called and an @RequestScoped proxy would be returned, which the > second Bean<T> can then return from its create() method. > > What do you think, any of these methods have potential unforeseen > side-effects or are they safe to use? > > Kind regards, > Arjan > > > > > > > >> >> >>> >>> Kind regards, >>> Arjan Tijms >>> _______________________________________________ >>> cdi-dev mailing list >>> cdi-dev(a)lists.jboss.org >>> https://lists.jboss.org/mailman/listinfo/cdi-dev >>> >>> Note that for all code provided on this list, the provider licenses the >>> code under the Apache License, Version 2 >>> (http://www.apache.org/licenses/LICENSE-2.0.html). For all other ideas >>> provided on this list, the provider waives all patent and other >>> intellectual >>> property rights inherent in such information. >>> >> >> -- >> Martin Kouba >> Software Engineer >> Red Hat, Czech Republic -- Martin Kouba Software Engineer Red Hat, Czech Republic