Oscar,
That makes perfect sense.
Thanks,
--Nikolaos
Oscar Westra van Holthe - Kind wrote:
On 29-04-2010 at 17:15, Nikolaos Giannopoulos wrote:
From the docs it appears that Flash Scope uses "session" but not
"request" scope and that it does some prefixing to avoid conflicts if
the Flash Scope was used more than once for the same named attribute.
It also appears to timeout objects after 2 minutes so it has some cleanup.
[...]
I'm sure there are some pretty simple and very valid reasons as to why
it wouldn't simply use "request" scope.
Anyone know why?
( I suspect it has something to do with forwarding or redirecting requests )
When forwarding a request, a framework can simply put the action bean in the
request scope, and the JSP page can access it. For a redirect this is not
possible, because the page is rendered in a different request.
The flash scope is designed to fix this 'problem', and to implement it we
need to use the first scope above request, the session scope. This is then
artificially limited to respond only to specific redirects (magic I cannot
explain), and cleaned up after 2 minutes if not used.
Osca
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