Needed by fcrepo4/fcrepo-module-auth-webac#48

Sorry @ajs6f , I switched back to implementing ApplicationContextAware to avoid the NullPointerExceptions occurring (seemingly) because this only pulls from the external WebAC module currently.

It's just a plain generic. The bounds don't matter at all. You have one method: T create(final FedoraResource resource, final UriInfo uriInfo, final IdentifierConverter<Resource,FedoraResource> idTranslator) in the factory types (each of which subtypes UriAwareFactory<T>) and one method in the generic supertype to the injectors: UriAwareFactory<T> getUriAwareFactories().

If you have resolved the injection problems, why not switch back to @Optional? Why are you having NPEs?

I did switch back to @Optional, I still get a NPE when it tries to perform the getBeansOfType. I assume because there are none?

As for the generics, would we filter for the type in each utility? Because I am guessing both the HttpTripleUtil and the HttpHeaderInjector would grab each others classes, but we would only want to execute our own to ensure we get the correct output (RDF vs headers).

No, that shouldn't be giving you an NPE, at least not the way I understand it now. It should work the same way as does the injection of httpTripleUtil.

You could filter, or I think you could use the type of T available in the superclass.

Alright, the NPE is because I was not instantiating the ApplicationObjectSupport correctly. So that is solved.

MAXIMIZE THE SOLVED!

Forgive my ignorance, but if UriAwareHttpHeaderFactory is an interface and UriAwareResourceModelFactory is an interface. Would I generate an "parent" interface with no methods defined?

No, I'm saying you try to give each factory a supertype, e.g. UriAwareFactory<R>, where R is Model in one case and Multimap<String, String> in the other, and it contains one method R create(final FedoraResource resource, final UriInfo uriInfo, final IdentifierConverter<Resource,FedoraResource> idTranslator) so that createHttpHeadersForResource => @Override Multimap<String, String> create(...) and createModelForResource => @Override Model create(...).

Resolved with: 0977142