From: Mirko Raner <mirko_at_raner.ws>
Date: Mon, 8 Jun 2015 16:24:15 -0400

Hi all,

I have a hierarchy of message handlers, where each concrete message handler
needs a specific message translator injected (following DDD principles):

abstract class MessageHandler<T> {
    @Inject
    protected T translator;

    abstract void handle(Object object);
}

class MyMessageHandler extends MessageHandler<MyTranslator> {
    void handle(Object object) {
        DomainObject domainObject = translator.translate(object);
    }
}

I would expect that HK2 would be able to resolve this injection, because,
when injecting into MyMessageHandler, T is already bound to MyTranslator.
However, I get the exception "Invalid injectee with required type of T
passed to getInjecteeDescriptor".
The handlers, as well as the translators, are all bound via
addActiveDescriptor(...).

Am I missing something here? Is this just a limitation of HK2's current
resolution mechanism, or is there some conceptual problem here?

Thanks for clarifying,

Mirko