Hi Martin, I compile the wicket project via Maven from the command line. I do not use the IDE to start the project and trace it? Do you have a hint how I can do that? As IDE, Ia m using IntelliJ IDEA.
Andre -------- Original-Nachricht -------- > Datum: Thu, 1 Mar 2012 09:40:30 +0200 > Von: Martin Grigorov <[email protected]> > An: [email protected] > Betreff: Re: Multi Tab and Session > 2012/2/29 Andre Schütz <[email protected]>: > > Hi, > > > > I could identify the cause of the problem, but still have no > > solution. > > > > I set some breakpoints and made some output messages to trace > > the system. The following thinks happened: > > > > (1) > > I submit a search in Tab1. The search word will be passed as > > Page Parameter to Page2 in Tab1. While Tab1 is showing the loading > > animation with it AjaxSelfUpdatingTimerBehavior, I submit a second > > search in Tab2. Tab2 switches to its Page2 and the loading animation > > stops in both Tabs. > > > > Reason: > > --> The constructors of Page2 is called twice on the two Tabs. > > > > As diagram: > > 01.) Tab1: Page1 submit search > > 02.) Tab1: Page2 (Page id = 14) calls its constructor and adds a PanelA > > 03.) Tab1: shows loading animation with its > AjaxSelfUpdatingTimerBehavior at PanelA > > 04.) Tab2: Page1 submit search > > 05.) Tab2: Page2 (Page id = 16) calls its constructor and adds a PanelA > > 06.) Tab2: shows loading animation with its > AjaxSelfUpdatingTimerBehavior at PanelA > > 07.) Tab1: Page2 (Page id = 17) calls its constructor > > 08.) Tab1: does not update anymore > > 09.) Tab2: Page2 (Page id = 18) calls its constructor > > 10.) Tab2: does not update anymore > > > > I do nothing from the beginning of step 7 and do not know why the > constructor > > is called again. > > Put a breakpoint in Page2 constructor and see why it is called. > > > > > (2) > > The same odd behavior happens, when I do the following. I submit a > search > > in Tab1 from its Page1. While the loading animation is shown, I reload > the > > Page1 in Tab2. The constructor of Page2 in Tab1 is called again and the > > Page2 in Tab1 stops its update progress. > > > > As diagram: > > 01.) Tab1: Page1 submit search > > 02.) Tab1: Page2 (Page id = 22) calls its constructor and adds a PanelA > > 03.) Tab1: shows loading animation with its > AjaxSelfUpdatingTimerBehavior at PanelA > > 04.) Tab2: Reload any Page > > 05.) Tab1: Page2 (Page id = 23) calls its constructor > > 06.) Tab1: does not update anymore > > > > > > I really can't explain to myself, why the constructor is called again. > But I think > > that this second call in the individual Tabs is crashing my application. > > Any ideas about this odd behavior? > > > > Thank in advance, > > Andre > > > > > > On Wed, 29 Feb 2012 10:10:37 -0800 > > Dan Retzlaff <[email protected]> wrote: > > > >> Your description is clear, thank you. I'm not certain that the > background > >> thread's reference to the Session is valid outside of the servlet > request. > >> I would verify your assumption by logging the session's object ID when > the > >> value is read/written. > >> > >> I have one other thought for you. I believe Wicket keeps the most > recent > >> page in a deserialized state to save itself the work of deserialization > in > >> the common case of it being required by the next request. (I think the > >> logic is in PageStoreManager, but it's not clear to me. Hopefully a dev > can > >> confirm/correct me.) At any rate, this may cause the difference between > >> your two scenarios. In your successful, single-tab scenario, you may be > >> benefiting from a lack of serialization/deserialization round-trip. We > have > >> noticed this difference when our components have transient variables > that > >> aren't set to null in detach(): in the most recent page the variable > >> remains not-null; if the session has intermediate requests for other > pages, > >> the variable is null when next accessed. > >> > >> Good luck, > >> Dan > >> > >> 2012/2/29 "André Schütz" <[email protected]> > >> > >> > Hi, > >> > > >> > Page1 gets the click of the submit button and collects the search > word. > >> > This will be changed into a hash value and set as PageParameter > >> > (q=Hashvalue) to the ResponsePage which is Page2. > >> > Additionally, I store the hash value into a session HashMap which > holds > >> > the hash value as key and an own class with the original search word. > This > >> > class will be filled with the results from the search of the > background > >> > thread. > >> > > >> > On Page2, I have the PageParameter as hash value and can search for > the > >> > correct entry of the HashMap in the session to react, when the > results are > >> > found. > >> > > >> > I hope, I could describe it. > >> > > >> > Andre > >> > > >> > -------- Original-Nachricht -------- > >> > > Datum: Tue, 28 Feb 2012 14:27:35 -0800 > >> > > Von: Dan Retzlaff <[email protected]> > >> > > An: [email protected] > >> > > Betreff: Re: Multi Tab and Session > >> > > >> > > Hi Andre. I'm trying to understand your setup. A quickstart may be > >> > > required. > >> > > > >> > > What does your Page1's onSubmit() look like? Specifically I'd like > to > >> > know > >> > > how Page2 knows to watch for "word2". > >> > > > >> > > 2012/2/28 Andre Schütz <[email protected]> > >> > > > >> > > > Hello, > >> > > > > >> > > > I have a problem with my application that I am not able to solve > since > >> > > > the last three days. > >> > > > > >> > > > I realized that Wicket 1.5 provides multi tab / multi window > support > >> > > > for more than one opened tab in a browser. > >> > > > I have a problem with multiple tabs in my program, that I want to > >> > > > describe now. > >> > > > > >> > > > The program consists of two pages. Page1 contains a search field > that > >> > > > will be used to type in a search word. > >> > > > Page2 makes the search on a database, returns the results and > >> > > > displays it as a list. The search will be done from a background > >> > > > thread that stores the result in a hashmap in the session with > the > >> > > > search word as the key. Furthermore, Page2 shows a little loading > >> > > > animation that will be updated (AjaxSelfUpdatingTimerBehavior), > when > >> > the > >> > > > result is stored in the session. > >> > > > > >> > > > Now the problem. > >> > > > > >> > > > (1) I open the application in two tabs of the same browser. > >> > > > (2) The URL looks as follows: > >> > > > Tab1 - localhost:8080/appli/?0 > >> > > > Tab2 - localhost:8080/appli/?1 > >> > > > (3) Tab1 gets word1 in the search field and Tab2 gets word2 > >> > > > into the search field. > >> > > > (4) I press the submit button of Tab1, switch to Tab2 and press > the > >> > > > submit button, too. > >> > > > (5) The two Threads start to search for the results. > >> > > > (6) During the AjaxSelfUpdatingTimeBehavior, the result panel of > Page2 > >> > > > checks > >> > > > in its overwritten onBeforeRender method for the results. When > the > >> > > result > >> > > > for the search word is found in the session, the updateBehavior > of > >> > Page2 > >> > > > is stopped and the results will be displayed. > >> > > > -> Here starts my problem: > >> > > > > >> > > > None of the two pages will be updated and show the results. If I > start > >> > > > the search in one of the Tabs, the process will be finished and > the > >> > > > results displayed onto the screen. > >> > > > > >> > > > For me, it seems that both tabs share the same session data and > also > >> > > > the same updateBehavior on the Page2. > >> > > > > >> > > > Can anybody help me with that problem? Would be great. > >> > > > > >> > > > -- > >> > > > Andre Schütz <[email protected]> > >> > > > > >> > > > > --------------------------------------------------------------------- > >> > > > To unsubscribe, e-mail: [email protected] > >> > > > For additional commands, e-mail: [email protected] > >> > > > > >> > > > > >> > > >> > -- > >> > Empfehlen Sie GMX DSL Ihren Freunden und Bekannten und wir > >> > belohnen Sie mit bis zu 50,- Euro! > https://freundschaftswerbung.gmx.de > >> > > >> > --------------------------------------------------------------------- > >> > To unsubscribe, e-mail: [email protected] > >> > For additional commands, e-mail: [email protected] > >> > > >> > > > > > > > -- > > Andre Schütz <[email protected]> > > > > --------------------------------------------------------------------- > > To unsubscribe, e-mail: [email protected] > > For additional commands, e-mail: [email protected] > > > > > > -- > Martin Grigorov > jWeekend > Training, Consulting, Development > http://jWeekend.com > > --------------------------------------------------------------------- > To unsubscribe, e-mail: [email protected] > For additional commands, e-mail: [email protected] > -- NEU: FreePhone 3-fach-Flat mit kostenlosem Smartphone! 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