(first, sorry for start a new thread. The original thread was mixed-up with
different top discussion)
that's right, i am screwed anyway if request takes too long, but from the
browser user decides to give up current search by click the stop button and
fire a new search. Since the pagemap is still locked by previous request,
the second request will have to wait. sounds like i will end up handle this
senario by pulling. is it possible to have a page that's not single thread
model? Can we have two interfaces, such as SingleThreadPage, and
ConcurrentThreadPage?
igor.vaynberg wrote:
yeah, if it takes a while the browser will timeout and you are screwed
anyways...
what do you mean they cant start a new search? you mean they no longer
for the results of the currently running search and just press the
search button again?
if they would open a new tab with the search page, and you had
automultiwindowsupport option enabled that new opened page would be
created in a new pagemap, and so you wouldnt have a locking problem...
-igor
On Jan 28, 2008 2:51 PM, Johan Compagner <[EMAIL PROTECTED]> wrote:
> shared resources are not synced thats one way of going round it.
>
> the other way is as igor describes. do the search in a seperate
thread.
> If it really takes that long then you do know that browsers also can
just
> time out after they don't get anything for a while?
>
> If it really takes that long then you should build a page where people
can
> fire searches to the system
> and the page is just displayig the searches they did and then if the
search
> is finished that page can bring them to the result
>
> johan
>
>
>
>
> On Jan 28, 2008 11:46 PM, cemeterygate <[EMAIL PROTECTED]> wrote:
>
> >
> > that's nice to have but is there a way to work around this issue?
Our
> > application for customer service and they perform a lot search on a
huge
> > database, in some cases, customer service would like to start new
search.
> > Since wicket is locked by page path, there is no way for CSR to
start a
> > new
> > request until previous one is finished.
> >
> >
> > igor.vaynberg wrote:
> > >
> > > the pages are locked on the pagemap. so you cannot have two
concurrent
> > > requests from the same user to the same pagemap. this is so when
you
> > > are coding your pages you can use the much simpler single-threaded
> > > model.
> > >
> > > every have fields in your servlet implementation? those have to be
> > > synchronized or you will run into threading issues. this is the
stuff
> > > we make sure you dont have to worry about.
> > >
> > > the trade off is that if you have long running requests you should
> > > probably process them in a different thread and let the UI poll
for
> > > status.
> > >
> > > -igor
> > >
> > >
> > > On Jan 28, 2008 2:08 PM, cemeterygate <[EMAIL PROTECTED]>
wrote:
> > >>
> > >> So I developed my first wicket application and I kept getting
exception
> > >> below
> > >> as soon as i point my application to production database.
> > >>
> > >> Can someone tell me why wicket can't handle concurrent request?
> > >>
> > >> to replicate this issue, i have a page with a form component and
> > regular
> > >> submit button.
> > >> on the onSubmit method,
> > >> protected void onSubmit() {
> > >> try {
> > >> Thread.sleep(3 * 60 * 1000);
> > >> } catch (InterruptedException e) {
> > >> }
> > >> }
> > >>
> > >> i put the thread into sleep for 3 minutes. I hit submit, then
stop the
> > >> request on browser and submit another request. then result to a
> > internal
> > >> error page. Why can't wicket handle mutiple submit? i dont' get
it,
> > >> shouldn't wicket process the new require like how servlet works?
> > Someone
> > >> please tell me how to work around this issue. Thanks in advance.
> > >>
> > >>
> > >> 2008-01-25 14:45:05,443 ERROR [org.apache.wicket.RequestCycle] -
<After
> > 1
> > >> minute the Pagemap null is still locked by:
> > >> Thread[resin-tcp-connection-*:8080-45,5,main], giving up trying
to get
> > >> the
> > >> page for path: 5>
> > >> org.apache.wicket.WicketRuntimeException: After 1 minute the
Pagemap
> > null
> > >> is
> > >> still locked by: Thread[resin-tcp-connection-*:8080-45,5,main],
giving
> > up
> > >> trying to get the page for path: 5
> > >> at org.apache.wicket.Session.getPage(Session.java:734)
> > >> at
> > >>
> >
org.apache.wicket.request.AbstractRequestCycleProcessor.resolveRenderedPage
> > (AbstractRequestCycleProcessor.java:443)
> > >> at
> > >> org.apache.wicket.protocol.http.WebRequestCycleProcessor.resolve(
> > WebRequestCycleProcessor.java:139)
> > >> at
org.apache.wicket.RequestCycle.step(RequestCycle.java:1152)
> > >> at
org.apache.wicket.RequestCycle.steps(RequestCycle.java:1245)
> > >> at
org.apache.wicket.RequestCycle.request(RequestCycle.java
> > :489)
> > >> at
> > >>
org.apache.wicket.protocol.http.WicketFilter.doGet(WicketFilter.java
> > :354)
> > >> at
> > >>
org.apache.wicket.protocol.http.WicketServlet.doGet(WicketServlet.java
> > :121)
> > >> at
javax.servlet.http.HttpServlet.service(HttpServlet.java:115)
> > >> at
javax.servlet.http.HttpServlet.service(HttpServlet.java:92)
> > >> at
> > >> com.caucho.server.dispatch.ServletFilterChain.doFilter(
> > ServletFilterChain.java:106)
> > >> --
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> > >>
> >
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