definitions of architecture

[thiago borges martins]

speaks there guys,

I am facing a problem with my GWT application and believe that you can
help me.

1º when the user tries to refresh the page, or by the F5 button or
refresh button of the browser I do not want to miss the screen is
open. Today when I upgrade the browser back to the login screen of my
system.

2º until the time I could not find any example of authentication using
the gwt + ejb3. The only examples that I think is using the spring and
I can not change the architecture of my project. Does anyone have any
suggestions for this problem?

My architecture is gwt + smartgwt the client and the server I'm using
ejb3 + jpa2.

I thank everyone's attention.

[Jens]

1.) The basic idea is that you store information about where you are (and possibly other state information) as a String in the URL hash fragment (e.g. http://app.example.com/#ShowPerson:5). 

This basic idea is described in http://code.google.com/intl/de-DE/webtoolkit/doc/latest/DevGuideCodingBasicsHistory.html

As of GWT 2.1 this idea has been abstracted into the Activities and Places feature which you can/should use and which is described in http://code.google.com/intl/de-DE/webtoolkit/doc/latest/DevGuideMvpActivitiesAndPlaces.html

2.) Whats your problem with authentication? Or do you just have a general problem with using EJBs on server side?