>Ah; I see; if your interpretation is right then "product" must, oddly, be the same thing as "application author". How extraordinarily strange! I always thought instead that, for example, Glassfish or Wildfly was a "product that supports CDI" and Jersey or RestEasy was a (JAX-RS) "implementation". Under this interpretation, in the context of "a product that supports CDI" (i.e. in Glassfish) a "[JAX-RS] implementation" (Jersey) must "support the use of CDI-style Beans as…Application subclasses". I suppose I must be mistaken! From the literal text of the JAX-RS specification in isolation, however, it certainly is hard to see how!
No, "product" IS Jersey, CXF, RESTeasy. It is definitively NOT the same thing as "application author". That would really be extraordinarily strange.
>I see. If that truly is its meaning, I find this section of the specification to be poorly written indeed since it doesn't mention the application author at all, but speaks only of the hosting product (the app server of which the implementation is a component part, since that's what was in vogue at the time).
The specification was written to declare a common API for the implementing products. It is not a tutorial for application authors.