Re: [Webware-discuss] forward() and Session mgmt
Christoph Zwerschke wrote on 1/27/08 2:38 AM: Christoph Zwerschke schrieb: Ben Parker wrote: Calls to forward() will invoke the complete awake/respond/sleep cycle within the outer awake/respond/sleep cycle of the parent transaction. This means that if a servlet forwards a request to another servlet, then the session will be awakened twice and put to sleep twice (or more depending on the number of forward calls). This was causing some issues in our application because we use database sessions, but it would apply to anyone using the SessionFileStore as well. the transaction actually awake()s the session only if it does not exist, so it should not happen twice. Can you check that again? But I think you're right about sleep(). Transaction.awake() should really increase a counter if it does not awake the session because it already exists, and Transaction.sleep() should decrease the counter and send the session to sleep if it reaches zero. Would this solve your problem? I wrote nonsense in my first sentence. Of course the session is only awakened if it *exists*, i.e. when it was set with setSession() or implicitly created with session(). So you're right, in a nested transaction it will be awakened twice. I have now solved this in with a counter as you suggested: http://svn.w4py.org/Webware/trunk/WebKit/Transaction.py Let me know if this solves your problem. It will then go into Ww 1.0. That looks good to me. I put the counter in our custom Session subclass, but having it in the Transaction should be the same result. Sorry I didn't respond sooner to your original email. I was away over the new year and this totally fell off my radar. Thanks! Ben - This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse012070mrt/direct/01/ ___ Webware-discuss mailing list Webware-discuss@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/webware-discuss
Re: [Webware-discuss] forward() and Session mgmt
Christoph Zwerschke schrieb: Ben Parker wrote: Calls to forward() will invoke the complete awake/respond/sleep cycle within the outer awake/respond/sleep cycle of the parent transaction. This means that if a servlet forwards a request to another servlet, then the session will be awakened twice and put to sleep twice (or more depending on the number of forward calls). This was causing some issues in our application because we use database sessions, but it would apply to anyone using the SessionFileStore as well. the transaction actually awake()s the session only if it does not exist, so it should not happen twice. Can you check that again? But I think you're right about sleep(). Transaction.awake() should really increase a counter if it does not awake the session because it already exists, and Transaction.sleep() should decrease the counter and send the session to sleep if it reaches zero. Would this solve your problem? I wrote nonsense in my first sentence. Of course the session is only awakened if it *exists*, i.e. when it was set with setSession() or implicitly created with session(). So you're right, in a nested transaction it will be awakened twice. I have now solved this in with a counter as you suggested: http://svn.w4py.org/Webware/trunk/WebKit/Transaction.py Let me know if this solves your problem. It will then go into Ww 1.0. -- Chris - This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse012070mrt/direct/01/ ___ Webware-discuss mailing list Webware-discuss@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/webware-discuss
Re: [Webware-discuss] forward() and Session mgmt
Ben Parker wrote: Calls to forward() will invoke the complete awake/respond/sleep cycle within the outer awake/respond/sleep cycle of the parent transaction. This means that if a servlet forwards a request to another servlet, then the session will be awakened twice and put to sleep twice (or more depending on the number of forward calls). This was causing some issues in our application because we use database sessions, but it would apply to anyone using the SessionFileStore as well. Hi Ben, the transaction actually awake()s the session only if it does not exist, so it should not happen twice. Can you check that again? But I think you're right about sleep(). Transaction.awake() should really increase a counter if it does not awake the session because it already exists, and Transaction.sleep() should decrease the counter and send the session to sleep if it reaches zero. Would this solve your problem? -- Chris - SF.Net email is sponsored by: Check out the new SourceForge.net Marketplace. It's the best place to buy or sell services for just about anything Open Source. http://ad.doubleclick.net/clk;164216239;13503038;w?http://sf.net/marketplace ___ Webware-discuss mailing list Webware-discuss@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/webware-discuss
Re: [Webware-discuss] forward() and Session mgmt
On Dec 17, 2007 12:31 PM, Ben Parker [EMAIL PROTECTED] wrote: Hey all - Calls to forward() will invoke the complete awake/respond/sleep cycle within the outer awake/respond/sleep cycle of the parent transaction. This means that if a servlet forwards a request to another servlet, then the session will be awakened twice and put to sleep twice (or more ... Has anyone else encountered this? Do you think it's an issue to be handled within Webware or left up to the application developer? The current behavior hasn't caused problems for me, but I can certainly see how it could as you describe above. My opinion is that your solution should be inside Webware because eventually others will have the same problem and its doubtful that anyone needs the redundant calls. Also, we could offer a setting or at least a class level variable somewhere to turn it off. -Chuck - SF.Net email is sponsored by: Check out the new SourceForge.net Marketplace. It's the best place to buy or sell services for just about anything Open Source. http://ad.doubleclick.net/clk;164216239;13503038;w?http://sf.net/marketplace ___ Webware-discuss mailing list Webware-discuss@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/webware-discuss
