RE: [WEB400] What happened to rpgenerationx.com?

["Joe Pluta" <joepluta@xxxxxxxxxxxxxxxxx>]

> From: Joel R. Cochran
>
> I do have one remaining question... why have a Storage object at
> all?  Right
> now I am storing all my needed objects in the session.  Doesn't using a
> Storage object simply add an unnecessary layer?

Well, since the session uses a Hashtable, it has to do a lookup every time I
try to get a value from it.  If I only get one value (the storage object) at
the beginning of the request, and then use setters and getters from that
point on, I don't have to do any more lookups.

More importantly, though, is its the first step towards the other model I
was talking about where you will create a servlet proxy.  Your code will end
up looking like this:
---------
public void doPost(HttpServletRequest req, HttpSerlvetResponse res)
   throws WhateverExceptionsTheyThrow
{
   HttpSession session = req.getSession();
   MyProxy proxy = (MyProxy) session.getValue("MYPROXY");
   proxy.doRequest(req, res);
}
---------

Since the proxy variable is threadsafe, that means the MyProxy class can
have instance variables, whatever.  Not only that, it's relatively easy to
access it with external events (such as timeouts).  You'll have one central
Collection somewhere with all your sessions, allowing you to display,
modify, and cancel sessions with ease.

Or so it's said <grin>.  I'm currently implementing just this model; I'll
let you know how it goes.

Joe