sim, I don't think it is possible right now. I am not an expert, but... On Fri, Mar 2, 2012 at 5:04 AM, Daniel Solano Gomez <cloj...@sattvik.com> wrote: > Yes, it is possible. At the byte-code level there is (at least at > run-time) no difference between a generic and a non-generic class. All > methods take/return the generic type just use Object.
This is mostly true, but for the use case needed, deriving from a parameterized superclass, the JVM does track the parameterized generic. Class.getGenericSuperclass returns a ParameterizedType for Classes extending a parameterized generic. I would like this functionality as well for writing a Dropwizard service in Clojure. The Dropwizard framework relies on reflecting on the parameter of a parent, and this doesn't seem possible in Clojure right now. Writing a Java shim to do the inheritance also won't work with the current version of Dropwizard (though perhaps that is a design bug in the framework). I've taken a look at how annotations are done in generate-class, and would like input on the best way to add this functionality. My rough plan is: - Create an implementation of ParameterizedType for Clojure - Add a metadata argument to the symbol passed to gen-class :extends or :implements - when that metadata is present, override getGenericSuperclass in the generated class to return the ParameterizedType Is this reasonable? Are there other areas that need to expose generic parameters? Jim http://docs.oracle.com/javase/6/docs/api/java/lang/Class.html#getGenericSuperclass() https://github.com/codahale/dropwizard/blob/master/dropwizard-core/src/main/java/com/yammer/dropwizard/AbstractService.java#L75 -- You received this message because you are subscribed to the Google Groups "Clojure" group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en
