Re: [gatein-dev] CDI Injection for GateIn

From: "Julien Viet" <julien(a)julienviet.com&gt; To: "Ken Finnigan" <kfinniga(a)redhat.com&gt; Cc: gatein-dev(a)lists.jboss.org Sent: Wednesday, April 17, 2013 10:08:24 AM Subject: Re: [gatein-dev] CDI Injection for GateIn On Apr 17, 2013, at 3:58 PM, Ken Finnigan <kfinniga(a)redhat.com&gt; wrote: Are you suggesting to fire the events inside CommandServlet.include() around the following call? switcher.include(request, response); yes My original plan was to perform it within that method for Tomcat, but with the way CommandServlet is written, I wasn't sure that it would be easy to extend it to only replace the bits I needed, which is why I created a CommandDispatcher instead. I was thinking at wrapping the callback with a call that perform the event firing: RequestDispatchCallback wrapper = new RequestDispatchCallback() { public Object doCallback( ServletContext dispatchedServletContext, HttpServletRequest dispatchedRequest, HttpServletResponse dispatchedResponse, Object handback) throws ServletException, IOException { // Fire event before Object ret = cmd.doCallback(dispatchedServletContext, dispatchedRequest, dispatchedResponse, handback); Is cmd the CallbackCommand that is currently created within CommandDispatcher.include()? Do you mean that the RequestDispatcherCallback should be wrapped, and not the CallbackCommand? So we'd have as above except: Object ret = callback.doCallback(...); // Fire event after return ret; } } And the CallbackCommand would be created as: new CallbackCommand(targetServletContext, wrapper, handback); instead of new CallbackCommand(targetServletContext, cmd, handback); and change result = CommandServlet.include(servletPath, req, resp, cmd, targetServletContext); and this would stay as is to result = CommandServlet.include(servletPath, req, resp, wrapper, targetServletContext); Ken From: "Julien Viet" <julien(a)julienviet.com&gt; To: "Ken Finnigan" <kfinniga(a)redhat.com&gt; Cc: gatein-dev(a)lists.jboss.org Sent: Wednesday, April 17, 2013 9:35:32 AM Subject: Re: [gatein-dev] CDI Injection for GateIn Hi Ken, there are a few things I would like to discuss about the PR. The main thing I want to understand is when the "fire" event should be fired when the dispatch occurs. In the new TomcatCommandDispatcher I see it is done in the include method before the dispatch is effectively done (i.e before the servlet container performs the dispatch). What about having it done after the dispatch is really done ? (which would avoid to switch thread context classloader as Tomcat would have done that already). On Apr 16, 2013, at 9:36 PM, Ken Finnigan <kfinniga(a)redhat.com&gt; wrote: Julien, Here's the changes for WCI to enable servlet request events: https://github.com/gatein/gatein-wci/pull/11 If everything looks ok I'll merge tomorrow and release a new WCI. Ken From: "Julien Viet" <julien(a)julienviet.com&gt; To: "Ken Finnigan" <kfinniga(a)redhat.com&gt; Cc: gatein-dev(a)lists.jboss.org Sent: Monday, April 15, 2013 11:05:16 AM Subject: Re: [gatein-dev] CDI Injection for GateIn On Apr 15, 2013, at 4:11 PM, Ken Finnigan <kfinniga(a)redhat.com&gt; wrote: All, The work to have CDI injection into portlets and filters is almost complete, but a difference has been discovered between AS7 and Tomcat. In essence, the ApplicationDispatcher for Tomcat never fires the ServletRequestEvent on includes, but the ApplicationDispatcher in AS7 has been modified to fire the event when the current TCCL is different to the classloader on the Context. wouldn't it be better to do it when there is an include between context ? what is the difference ? I'm proposing that in the Tomcat specific bits of WCI, I create an extended CommandServlet that performs the same check and fires the events as desired. yes, can you add a test for it so we have guarantees that it will not break later ? Any concerns or better approaches are most welcome. one remark: I think we are reaching application spec boundaries. This kind of stuff should be brought to the Portlet 3.0 EG so we can make it specified in the Servlet spec. Ken ======================== Senior Software Engineer / JBoss Enterprise Middleware Red Hat, Inc. _______________________________________________ gatein-dev mailing list gatein-dev(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/gatein-dev