You seem to be using 1.2, is that right? -Matej
On 4/30/07, RedFury <[EMAIL PROTECTED]> wrote: > > Hi all, just want to say that I've relatively new to Wicket but am loving > every minute of it! In just a few weeks of learning and programming I have > been able to create a robust, javascripted, ajaxified app for our company. > Great work to the devs! > > However, I have one problem which I'm a little unsure how to solve, its not > an inherent problem with Wicket but more a problem with my ajax in wicket. > I will try to go into as much detail as possible. > > I have a page with a set of tabs. Each tab will replace the main body of > the page with different components using ajax. this is all working great. > On top of this, the main page of the app has a global timer (using > AbstractAjaxTimerBehavior) which does any updates required for the current > tab. So lets say I have component C1 on tab T1 (T1 is a wicket panel which > I replace when needed.) The ajax update will call an update() function > which is overloaded for the different tab types. So T1.update() will call > target.addComponent(C1); etc.. > > The problem I am having is in the timing between the ajax timer request and > the ajax update request when the user hits a new tab. I am getting the > following error: > > java.lang.NullPointerException > at > wicket.request.compound.DefaultRequestTargetResolverStrategy.resolveListenerIn > terfaceTarget(DefaultRequestTargetResolverStrategy.java:295) > at > wicket.request.compound.DefaultRequestTargetResolverStrategy.resolveRenderedPa > ge(DefaultRequestTargetResolverStrategy.java:228) > at > wicket.request.compound.DefaultRequestTargetResolverStrategy.resolve(DefaultRe > questTargetResolverStrategy.java:153) > at > wicket.request.compound.AbstractCompoundRequestCycleProcessor.resolve(Abstract > CompoundRequestCycleProcessor.java:48) > at wicket.RequestCycle.step(RequestCycle.java:992) > at wicket.RequestCycle.steps(RequestCycle.java:1084) > at wicket.RequestCycle.request(RequestCycle.java:454) > > > So it seems what is happening (this is my guess) is that the ajax requests > for the timer update and the new tab update are being sent almost > simultaneously. The first request is processed by the server and this > actually changes the comoponents on the page. Then the second request comes > in and its target behavior no longer exists because the first request > replaced that component (panel) with something different. > > So I guess what I'm looking for is ideas on how to solve this problem? How > does Wicket ajax work client side? Does it organize ajax request-response > cycles one at a time, or can they be sent simultaneously? Also, is there a > way I can hoook into the client code and stop the timer update from being > called if we've already got a pending page-change ajax request. > > So I've waffled a bit, in short how do I stop the second ajax request from > referencing behavior that the first one just got rid of ? > > Thanks, > Red Fury > > -- > View this message in context: > http://www.nabble.com/Problem-with-concurren-ajax-requests-on-page-tf3667503.html#a10247552 > Sent from the Wicket - User mailing list archive at Nabble.com. > > > ------------------------------------------------------------------------- > This SF.net email is sponsored by DB2 Express > Download DB2 Express C - the FREE version of DB2 express and take > control of your XML. No limits. Just data. Click to get it now. > http://sourceforge.net/powerbar/db2/ > _______________________________________________ > Wicket-user mailing list > Wicket-user@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/wicket-user > ------------------------------------------------------------------------- This SF.net email is sponsored by DB2 Express Download DB2 Express C - the FREE version of DB2 express and take control of your XML. No limits. Just data. Click to get it now. http://sourceforge.net/powerbar/db2/ _______________________________________________ Wicket-user mailing list Wicket-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/wicket-user
