[jboss-user] [EJB 3.0] - Re: Storing user info on server
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Tue Mar 4 23:21:38 EST 2008
A pattern I've traditionally employed revolves around the notion of an "Application Session", which is stored in any of your client-specific access sessions (ie. Webapp, Flex, GUI). So the application deals with this alone, and is agnostic towards the type of client.
I'll outline for a webapp here as its probably the most widely used, but you can apply the techniques however you'd like.
* End user makes HTTP Request
* Servlet Filter intercepts before sending along the FilterChain. Grabbing the ApplicationSession, which is an SFSB proxy, from the HttpSession, places in a public static ThreadLocal variable before the invocation continues.
* There's now an ApplicationSession bound to this request/Thread's scope, usable from any component without having to pass it around or add it to every method signature.
* On the way out, Servlet Filter (in a finally block) clears the ThreadLocal var holding the SFSB proxy back to intialValue(), otherwise the ApplicationSession will remain tied to this Thread, which will be reused in other requests.
So above the parts bound to the webapp are the HttpSession for storing the SFSB and the Filter for placing it in Thread scope. To support another client type, just add the appropriate mechanisms to provide these behaviors.
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