Hi,

the ability to have injection point has been there since forever (it was possible even in 1.0) yet the option you are asking for is lacking. I certainly haven't been there when/is the design decision was taken

Javadoc of InjectionPoint even mentions that it can be a parameter of an Observer method.

I'd say what you ask is a feature request material for CDI spec.

Not sure how user friendly would be any solution on Weld side, we could probably have something like WeldProcessObserverMethod lifecycle event with a method returning it but that's hardly friendlier than just going over the params as you suggested.

Also note that Producer#getInjectionPoints() is really only good for browsing them as you cannot swap them out with another. At that point, they are only used for validation purposes.

Actually, our implementation already has the very method you are after, so if you would be fine doing some casting, be our guest.

core/ObserverMethodImpl.java at 3.1.0.Final · weld/core · GitHub