Re: [JBoss-dev] URL based transaction demarcation and long running transations

Julien Viet Mon, 19 Jan 2004 11:50:40 -0800

you can look at :

http://cvs.sourceforge.net/viewcvs.py/*checkout*/jboss/nukes/nukes/src/ main/org/jboss/nukes/servlet/TransactionFilter.java?content- type=text%2Fplain&rev=1.6

only RequiresNew behaviour is used by Nukes

julien

On Jan 19, 2004, at 7:33 PM, Bill Burke wrote:

Nicholas wrote:
Something like this ?
/myapp/ATMOps/* ---> REQUIRES_NEW
/myapp/AccountOps/* ---> REQUIRES
/myapp/SimpleOps/* ----> NOT_SUPPORTED
/myapp/FlushOps/* ---> NEVER  // probably not....
successful call to:
/myapp/ATMOps/completeTransfer ----> COMMIT
/myapp/AccountOps/completeUpdate ----> COMMIT
redirect to:
/myapp/ATMOps/handleError ---> ROLLBACK
/myapp/AccountOps/handleError ---> ROLLBACK
etc.
1. Determine the URL
2. Lookup the URL/Transaction Map  (Default to NOT
SUPPORTED)
3.
A. If REQUIRES lookup HTTP Session and grab UserTran.
If does not exist, create one and start.
B. If REQUIRES_NEW, set flag for Nested tran in
session, acquire new user tran and start.
C. If NEVER, lookup tran in session and if tran is
present and active, throw exception.
more rules here....
Sounds good. You interested?

Bill
//Nicholas
--- Bill Burke <[EMAIL PROTECTED]> wrote:
I say make it a filter.  If the invocation mechanism
supports interception, you might as well use it.  I am also
not sure if the web container will have a good joinpoint for this.
I hope somebody volunteers.  This would be easy to
implement and give somebody a good introduction to coding JBoss.
Bill

Marc Fleury wrote:

Isn't that already part of the AOP framework or
are you talking about a
servlet filter?
narcf
-----Original Message-----
From:
[EMAIL PROTECTED]

[mailto:[EMAIL PROTECTED]
On
Behalf Of Bill Burke
Sent: Monday, January 19, 2004 11:51 AM
To: Jboss-Dev
Subject: [JBoss-dev] URL based transaction
demarcation and
long running transations

I'd like for somebody to look into being able to
define
transaction demarcation like we can for EJB at the

servlet/jsp/war level. So, based on a URL pattern
you can
specify trans-attributes. Along with this would
be stuffing
the transaction into the HTTP session so that you
can have
long transactions that span separate HTTP
requests. I don't
think that something like this would be very hard
to do. It
is just a matter of providing a Filter and some
metadata with
jboss-web.xml. You can probably steal a lot of
code from the
transaction interceptors within our ejb stack and
invokers.

Let me know if anybody is interested and I can
give you some
more ideas.

Bill

P.S. Ivelin. I'd like to add this to the roadmap.
--
================
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JBoss Group LLC.
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Re: [JBoss-dev] URL based transaction demarcation and long running transations

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