<pedrocorreia.net ⁄>
 

<Generics and the Session State ⁄ >




clicks: 3965 3965 2008-05-15 2008-05-15 goto programacao myNews programacao  Bookmark This Bookmark This


A minor buzzfest about type safe HttpSessionState handling going on now in the upcoming story queue at DNK. There are a couple of decent patterns being shared, so I figured I'd add in my own favorite type-safe session state handler.

The pattern uses generics (I loev generics) and works very well for data objects specifically designed to be stored in the session.

The pattern goes like this: A static SessionHelper class exposes a static, generic method for retrieving objects from the session state. The method has one type parameter for the type of object that the caller wants. The caller must supply a key under which the object is stored. Simple, no?

Yes. Too simple. But here is where the magic happens. Callers must also pass in a delegate that creates the default instance of the object. Essentially, this delegate allows the helper to "set" the value if not found. And the delegate uses generics, so the set logic is type safe as well.



este é só um excerto do artigo, para aceder ao artigo completo, clique no link em baixo:
this is just a small excerpt from the article, to access the full article please click in the link below:

http://statestreetgang.net/post/2008/01/Generics-and-the-Session-State...




Subscribe News RSS  Subscribe News Updates by E-mail





myNews <myNews show="rand" cat="programacao" ⁄>

RouterJs: easy routing for your ajax Web applications new ...

RouterJs is a simple router for your ajax web apps. It's build upon History.js which means that Rout (...)

clicks: 19492 19492 2012-05-14 2012-05-14 goto url (new window) haithembelhaj.g... goto myNews programacao


Backbone computed properties new ...

This gist shows one way to implement read- and write-enabled computed properties on a Backbone Model (...)

clicks: 19036 19036 2012-05-13 2012-05-13 goto url (new window) https://gist.gi... goto myNews programacao


Android Query new ...

Android-Query (AQuery) is a light-weight library for doing asynchronous tasks and manipulating UI el (...)

clicks: 18873 18873 2012-05-12 2012-05-12 goto url (new window) code.google.com... goto myNews programacao


Create Instagram Filters With PHP new ...

In this tutorial, I'll demonstrate how to create vintage (just like Instagram does) photos with PHP (...)

clicks: 19191 19191 2012-05-12 2012-05-12 goto url (new window) net.tutsplus.co... goto myNews programacao


HTML5 jQuery Paint Plugin new ...

Websanova Paint is a HTML5 canvas based jQuery plugin. It allows you to free paint on a canvas area (...)

clicks: 30348 30348 2012-05-12 2012-05-12 goto url (new window) websanova.com/t... goto myNews programacao


Real-time Applications With Node.js and Socket.IO new ...

Hey everyone! Sorry about the long pause since the last blog post, life has been quite hectic for th (...)

clicks: 19453 19453 2012-05-11 2012-05-11 goto url (new window) codingcookies.c... goto myNews programacao


Sass vs. LESS vs. Stylus: Preprocessor Shootout new ...

CSS3 preprocessors are languages written for the sole purpose of adding cool, inventive features to (...)

clicks: 18929 18929 2012-05-11 2012-05-11 goto url (new window) net.tutsplus.co... goto myNews programacao


15 Handpicked jQuery Drop Down Menus Tutorials new ...

Here we are presenting another brilliant collection of 15 jQuery navigation menu that you can downlo (...)

clicks: 17768 17768 2012-05-10 2012-05-10 goto url (new window) smashingapps.co... goto myNews programacao