Re: Retrieve certain session data inside a servlet

[Carlos Alonso Vega]

Hi all,

Thanks for all replies they help me a lot.

Regards
Carlos


Martin Gainty escribió:


Good Morning Eric and Carlos-

Indeed there is a way to enable CrossContext communication via the 
CrossContext=true directive inside the Context tag

Context path=/pluto crossContext=true /

This capability is available from combined engineering staff from Sun 
Microsystems and the IBM Corporation.

Tthe specific JSR-168 spec is published at
http://jcp.org/aboutJava/communityprocess/final/jsr168/

For specific implementation details I would encourage you to look at 
John Lewis' article available at

http://www.theserverside.com/tt/articles/article.tss?l=ClusteringTomcat

HTH.
Martin--

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- Original Message - From: Eric Haszlakiewicz 
[EMAIL PROTECTED]

To: Carlos Alonso Vega [EMAIL PROTECTED]
Cc: Tomcat Users List users@tomcat.apache.org
Sent: Friday, June 02, 2006 9:11 PM
Subject: Re: Retrieve certain session data inside a servlet



On Fri, Jun 02, 2006 at 11:15:03AM +0200, Carlos Alonso Vega wrote:


Bob,

Thanks for the reply. My problem is that the session info I need is not
of the session that makes the request. I need to check other 
sessions in

the same context.  I can use the request because it is in the same
context, so the manager is the same.

This servlet is called internally from the app, and checks if some
session exists. It is similar to the case of obtaining all active
sessions from one context using the manager inside the servlet code
(findSessions). If someone have this piece of code (or similar), it 
will

serve me.



To do something like that you need to do it yourself.  i.e. store a
HashTable in the application context, then add and remove sessions to
it when people login and logout, or at some other convinient time.
Of course, this assumes your app isn't running in a distributed 
environment.

If it is, then it's impossible to get a session object from a different
JVM.  (well, you could serialize it and transfer the data, but it won't
be the same object and it won't be useful for much other than extracting
some info)

eric

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Retrieve certain session data inside a servlet

[Carlos Alonso Vega]

I am trying to obtain data about a session inside a servlet, the code 
seems to be simple as


localSession = Ctx.getManager().findSession(sessionId);

My problem is that I do not know how to obtain the Ctx object from a 
request (HttpServletRequest)


Thanks in advance



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Re: Retrieve certain session data inside a servlet

[Carlos Alonso Vega]

Bob,

Thanks for the reply. My problem is that the session info I need is not 
of the session that makes the request. I need to check other sessions in 
the same context.  I can use the request because it is in the same 
context, so the manager is the same.


This servlet is called internally from the app, and checks if some 
session exists. It is similar to the case of obtaining all active 
sessions from one context using the manager inside the servlet code 
(findSessions). If someone have this piece of code (or similar), it will 
serve me.


Regards

Carlos


Bob Hall escribió:


--- Carlos Alonso Vega [EMAIL PROTECTED] wrote:

 


I am trying to obtain data about a session inside a
servlet, the code 
seems to be simple as


localSession =
Ctx.getManager().findSession(sessionId);

My problem is that I do not know how to obtain the
Ctx object from a 
request (HttpServletRequest)


Thanks in advance

   



Carlos,

To obtain the HttpSession for the current request:

HttpSession sess = req.getSession();
   OR
boolean create = false;  (or true)
HttpSession sess = req.getSession(create);

HTH,
Bob
 

















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