Re: cleaning session

[Erik Weber]

Yeah, "similar naming convention" is the key to making it easier on 
yourself.

Also, as I tried to suggest once before (in a riddle -- "a single key 
can open many doors" -- ha ha ha grasshoppah), you can store references 
to many objects under a single attribute key (using structured/nested 
beans, maps, etc.). Delete the single attribute (perhaps when a user 
returns to a main view) and you delete the entire tree of references, 
freeing up all that memory with one statement and without having to 
write too much conditional code. I'm not sure if this strategy is 
feasible with Struts session-scoped forms though.

Erik
[EMAIL PROTECTED] wrote:
Hi, Erik and Freddz.
I like the idea of having a wizard whose data gets cleaned as soon as it's scope is 
left.
How about this: Have all resources for one wizard in a URL subdirectory. Have a 
similar naming convention for the resources the wizard leaves in the session. If a 
http request comes for an url, the janitor filter could remove all wizard's session 
resources that do not match the current request's directory.
This way the janitor could be fairly generic.
Hiran
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SAG Systemhaus GmbH
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80867 München
Phone +49-89-54 74 21 34
Fax   +49-89-54 74 21 99

 

-----Original Message-----
From: Erik Weber [mailto:[EMAIL PROTECTED] 
Sent: Donnerstag, 7. Oktober 2004 11:55
To: Struts Users Mailing List
Subject: Re: cleaning session

This is similar to what I usually implement. I have been 
gradually developing a "session manager" or perhaps a 
"session janitor" that watches/tracks workflow and cleans up 
stuff from memory (session) that isn't needed anymore. It 
could be a filter or a custom request processor in the world 
of Struts. Since I most often use my own controller Servlet I 
have my own place to put it, but basically, it gets invoked 
before any request handlers.

Erik
Freddy Villalba A. wrote:
   

Hi,
I have never implemented anything like this (with Struts), 
     

but this is 
   

the first thing I can think of...
Assuming your wizard is one-way (by this, I mean you have a linear 
graph - 1<->2<->3... -, no bifurcations and /or 
     

intersections and / or 
   

parallelism), you could "define" your "workflow" by 
     

"tagging" the pages it is made of...
   

then, manage the wizard from a filter that is able to detect your 
getting into one and your leaving it. Once it detects 
     

someone's left a 
   

wizard, and knowing its components, it could have them 
     

cleaned off the 
   

corresponding Session.
I believe, however, that this approach wouldn't work if the graph is 
not linear.

I'll be glad to here your feedback (everybody).
HTH,
Freddy.
-----Mensaje original-----
De: Paul McCulloch [mailto:[EMAIL PROTECTED]
Enviado el: jueves, 07 de octubre de 2004 10:27
Para: 'Struts Users Mailing List'
Asunto: RE: cleaning session
That isn't the purpose of the (confusingly named) reset 
     

method. Reset 
   

is there to, typically, deal with the html forms submit 
     

checkbox fields 
   

(they don't submit anything if they are null).
Paul

     

-----Original Message-----
From: Leandro Melo [mailto:[EMAIL PROTECTED]
Sent: Wednesday, October 06, 2004 5:43 PM
To: Struts Users Mailing List
Subject: Re: cleaning session
If you have your action in HttpSession, why don`t you just 
       

call reset 
   

whenever a user clicks on the button supposed to start this wizard?

--- struts lover <[EMAIL PROTECTED]> escreveu:
  

       

Hello everyone,
I am facing this problem of session. I have my action form in 
session(a wizard like thing). Now if the user starts filling in 
values  and clicks on the NEXT button, to go on to the next screen 
and then instead of completing the process of application, 
         

clicks on 
   

some other link.
Again he wants to start with the application process, the form get 
pre-populated with the previous values, as the form in still in 
session. I want a clean form.
How to overcome this problem???
Any ideas???
Thanks.


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