What I want to do is to perform authentication function; but would like auth logic to be separated from Page file. So the auth function can be reused next time if other front end client needs it.
Then I searched on the tapestry website and found that seemingly it is achieved by using Dispatcher (http://wiki.apache.org/tapestry/Tapestry5HowToCreateADispatcher). That's why I use this mechanism trying to accomplish my task. What is the best practice if I want to achieve such goal? Or is there any resource/ guideline telling about this? Thank you very much. Thiago H. de Paula Figueiredo wrote: > > Em Mon, 08 Jun 2009 19:42:14 -0300, Neo Anderson > <javadeveloper...@yahoo.co.uk> escreveu: > >> I run the code and request.getAttribute(USER) returns null in dispatch() >> function. So I output the Request to see what happens; then notice that >> they (Request in Login.java Page and AccessController.java) are two >> difference objects. > > That's not what I've asked. Anyway, Tapestry uses proxies a lot, so it is > very likely that the two objects are functionally the same. > >> Now it looks like I can obtain the User data by marking the User object >> as SessionState in Login.java Page. >> >> public class Login{ >> ... >> @SessionState >> private User user; >> ... >> Object onSubmitFromLogin(){ >> user = new User(...); >> } >> } >> >> Then retrieve User object from dispatch() in AccessController.java >> >> public boolean dispatch(Request request, Response response) throws >> IOException{ >> ... >> if(asm.exists(User.class)){ >> User u = asm.get(User.class); >> ... >> } >> } >> >> However, this rise another question for me - is this a recommended way >> to obtain a temporary User object (because User object in Login Page is >> only constructed temporarily and passed to the backend side for >> verification)? > > If you'll need that object in a different request, yes. > Why are you using a dispatcher here? I can't see how a dispatcher would be > invoked in the same request after a page was rendered. > >> Also, how if I have other User object which holds different information >> (e.g. User object obtained from database), but needs to exist at the >> same time as that temporarily constructed User object? Will the later >> override the one that is constructed temporarily (I read Tapestry >> website saying if I have the same type marked with SessionState >> annotation, they will use the same reference regardless of their >> variable name)? > > Yes, it will override. > > I suggest you to tell use what you're trying to accomplish instead of > asking details of how to do it. > > -- > Thiago H. de Paula Figueiredo > Independent Java consultant, developer, and instructor > http://www.arsmachina.com.br/thiago > > --------------------------------------------------------------------- > To unsubscribe, e-mail: users-unsubscr...@tapestry.apache.org > For additional commands, e-mail: users-h...@tapestry.apache.org > > > -- View this message in context: http://n2.nabble.com/Obtain-the-data-inside-RequestGlobals-question-tp3032702p3048582.html Sent from the Tapestry Users mailing list archive at Nabble.com. --------------------------------------------------------------------- To unsubscribe, e-mail: users-unsubscr...@tapestry.apache.org For additional commands, e-mail: users-h...@tapestry.apache.org
