Re: [Stripes-users] Flushing a writer before the ActionBean has completed

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Thanks Remi, I'll give this some thought, this helps a lot.
Also, I did come up with a way to prompt the user at the beginning of the
submission.
I pop up a jquery-ui dialog box, instead of trying to use the response
writer
to write a new page.

On Tue, Jan 26, 2016 at 2:15 AM, <
str...@li...> wrote:

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>    1. Re: Stripes-users Digest, Vol 113, Issue 4 (VANKEISBELCK Remi)
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>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Tue, 26 Jan 2016 09:15:03 +0100
> From: VANKEISBELCK Remi <re...@rv...>
> Subject: Re: [Stripes-users] Stripes-users Digest, Vol 113, Issue 4
> To: Stripes Users List <str...@li...>
> Message-ID:
>         <CAG-EEs3GhOKEUHRZBMWpZvp7bnBz=
> kUW...@ma...>
> Content-Type: text/plain; charset="utf-8"
>
> Hi Ron,
>
> Sending an email at the end of the task is even easier : you don't need
> polling at all !
>
> Simply submit a runnable with your webservice call and response handling
> (send the email) to an ExecutorService from the action. This is "fire and
> forget" : submission to the executor doesn't block. Then just return a
> redirect to the action you want.
>
> Stuff like :
>
> public Resolution submitTaskAndProceed() {
>   executorService.submit(new MyTask(this));
>   return new RedirectResolution(MyActionAfterSubmitTask.class);
> }
>
> As you see the action can be an argument of the task, in case you need it.
> I prefer to pass actual required data as it makes your task testable
> outside of Stripes.
>
> The whole point here is that your action bean is a regular one. It submits
> a job to a thread pool, that's all.
>
> HTH
>
> R?mi
>
> 2016-01-25 17:54 GMT+01:00 Ron King <ron...@gm...>:
>
> > The link that Joaquin describes is not quite what I want either. I want
> to
> > allow the user to go ahead and
> > continue to work, not wait one minute before they can go on. This seems
> to
> > describe a scenario where a 'wait page' would be updated periodically,
> and
> > I don't want the user to have to wait at all. Sending an email from
> within
> > the action upon completion would work for me as far as notifying the user
> > about their form submission.
> >
> > It appears to me that If I can get the response writer to write out my
> new
> > page at the beginning of the submission, it would satisfy my requirement.
> > How can I ensure that the writer is flushed?
> >
> >
> >
> https://stripesframework.atlassian.net/wiki/display/STRIPES/Wait+Page+for+Long+Events
> >
> > On Mon, Jan 25, 2016 at 3:00 AM, <
> > str...@li...> wrote:
> >
> >> Send Stripes-users mailing list submissions to
> >>         str...@li...
> >>
> >> To subscribe or unsubscribe via the World Wide Web, visit
> >>         https://lists.sourceforge.net/lists/listinfo/stripes-users
> >> or, via email, send a message with subject or body 'help' to
> >>         str...@li...
> >>
> >> You can reach the person managing the list at
> >>         str...@li...
> >>
> >> When replying, please edit your Subject line so it is more specific
> >> than "Re: Contents of Stripes-users digest..."
> >>
> >>
> >> Today's Topics:
> >>
> >>    1. Re: Writing to response.writer is not working (Joaquin Valdez)
> >>    2. Re: Infinite loop issue on stripes layout components inside
> >>       jsp tag (Zlatka Mihaylova)
> >>
> >>
> >> ----------------------------------------------------------------------
> >>
> >> Message: 1
> >> Date: Sat, 23 Jan 2016 11:41:57 -0700
> >> From: Joaquin Valdez <joa...@gm...>
> >> Subject: Re: [Stripes-users] Writing to response.writer is not working
> >> To: re...@rv..., Stripes Users List
> >>         <str...@li...>
> >> Message-ID: <C43...@gm...>
> >> Content-Type: text/plain; charset="utf-8"
> >>
> >> Hi!
> >>
> >> Is this the same idea as this:
> >>
> >>
> >>
> https://stripesframework.atlassian.net/wiki/display/STRIPES/Wait+Page+for+Long+Events
> >> ?
> >>
> >> Joaquin
> >>
> >> > On Jan 23, 2016, at 10:52 AM, VANKEISBELCK Remi <re...@rv...>
> wrote:
> >> >
> >> > Hi again,
> >> >
> >> > Seems like a regular "long running job / polling" scenario. It can be
> >> done with current Stripes version, even if it will be less performant if
> >> your http client is really non blocking, but that's another story.
> >> >
> >> > So here's how I'd do this.
> >> >
> >> > 1/ Server side
> >> >
> >> > In the ActionBean, I'd submit a task to an executor service (a thread
> >> pool) with that long running job that calls the webservice. This task
> >> should update the back-end state in some way, so that you can do polling
> >> and know when it's done.
> >> > The same ActionBean can handle Ajax polling via another event method.
> >> This one will be called from some JS code in your page.
> >> >
> >> > public class MyAction implements ActionBean {
> >> >
> >> >   public Resolution triggerLongRunningJob() {
> >> >     // retrieve Executor Service, from servlet context or custom
> >> ActionBeanContext
> >> >     ExecutorService executorService = ... ;
> >> >     // submit task
> >> >     executorService.submit(new MyLongRunningTask(...);
> >> >     // return a redirect resolution to the "wait" screen
> >> >     return new RedirectResolution(getClass(), "displayWaitScreen")
> >> >   }
> >> >
> >> >   public Resolution displayWaitScreen() {
> >> >     return new ForwardResolution("/WEB-INF/jsp/wait-screen.jsp");
> >> >   }
> >> >
> >> >   public Resolution poll() {
> >> >     // find task completion status and return to the client
> >> >     String jsonTaskCompletion = ... ;
> >> >     return new StreamingResolution("application/json",
> >> jsonTaskCompletion);
> >> >   }
> >> >
> >> >
> >> >   // the long running task code is in a Runnable
> >> >   private class MyLongRunningTask implements Runnable {
> >> >     public void run() {
> >> >       // call the webservice and update internal state
> >> >
> >> >     }
> >> >   }
> >> > }
> >> >
> >> >
> >> > 2/ Client side
> >> >
> >> > First you'll submit the form to the 'triggerLongRunningJob' event.
> This
> >> will launch the background task and return directly.
> >> > Then, you'll send xhr requests to the 'poll' event, that will tell you
> >> what to do next. If task has completed, then you'll probably change the
> >> location of the browser in some way in order to display a "result" page
> of
> >> some sort (ie use your data from the completed task and do whatever you
> >> need with it).
> >> >
> >> > HTH
> >> >
> >> > R?mi
> >> >
> >> >
> >> >
> >> >
> >> >
> >> > 2016-01-23 17:05 GMT+01:00 Ron King <ron...@gm...>:
> >> >> Hi everyone,
> >> >>
> >> >> I want to write an html page back to the user at the very beginning
> of
> >> an ActionBean submit method.
> >> >> The method calls a web service that takes around a minute to respond,
> >> and I want to put up a message
> >> >> before the web service finishes.
> >> >>
> >> >> I'm on Tomcat 8. I tried flushing the writer, but the page still
> >> doesn't display until after I return the
> >> >> Resolution from the submit method.
> >> >>
> >> >> Is there a way to make it write immediately?
> >> >>
> >> >> Regards,
> >> >>
> >> >> Ron
> >> >>
> >> >>
> >>
> ------------------------------------------------------------------------------
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> >> >> _______________________________________________
> >> >> Stripes-users mailing list
> >> >> Str...@li...
> >> >> https://lists.sourceforge.net/lists/listinfo/stripes-users
> >> >
> >> >
> >>
> ------------------------------------------------------------------------------
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> >> > Monitor end-to-end web transactions and take corrective actions now
> >> > Troubleshoot faster and improve end-user experience. Signup Now!
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> >> ------------------------------
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> >> Message: 2
> >> Date: Mon, 25 Jan 2016 08:45:32 +0000
> >> From: Zlatka Mihaylova <zl...@ch...>
> >> Subject: Re: [Stripes-users] Infinite loop issue on stripes layout
> >>         components inside jsp tag
> >> To: Stripes Users List <str...@li...>
> >> Message-ID: <ca5a61b5677b427c9dfc34af0c2ba248@DOX13BE02.hex2013.com>
> >> Content-Type: text/plain; charset="utf-8"
> >>
> >> Thank you for the solution. It works.
> >> Btw, is there a Stripes change log somewhere? I?m interested in the
> >> changes from the last 7-8 years.
> >>
> >> Von: Ben Gunter [mailto:bg...@cp...]
> >> Gesendet: Mittwoch, 20. Januar 2016 13:12
> >> An: Stripes Users List <str...@li...>
> >> Betreff: Re: [Stripes-users] Infinite loop issue on stripes layout
> >> components inside jsp tag
> >>
> >> There's no telling when or if this will get fixed. For now, you should
> be
> >> able to work around the issue by using the alternative layout tag
> >> implementation with the following URL in the taglib directive:
> >>
> >> <%@ taglib prefix="layout" uri="
> >> http://stripes.sourceforge.net/stripes-buffered-layout.tld" %>
> >>
> >> On Wed, Jan 20, 2016 at 5:53 AM, Zlatka Mihaylova <zl...@ch...
> >> <mailto:zl...@ch...>> wrote:
> >> Hi,
> >>
> >> I am stuck on the following problem: with the current stripes version
> >> 1.6.0 an infinite recursion occurs whenever a
> <stripes:layout-component> is
> >> rendered inside a JSP custom tag. It?s pretty much the same issue
> reported
> >> here: https://stripesframework.atlassian.net/browse/STS-924 . The
> >> solution to rewrite all custom tags into JSP includes is working, but
> >> unclean, since we lose the convenient component encapsulation. This bug
> >> makes it impossible to use stripes layouts inside custom JSP tags.
> >>
> >> One of the stripes framework strengths is in the layout reusability.
> >> Therefore it would be very helpful if the issue is reopened and fixed.
> Let
> >> me know if you need more information or sample program to reproduce the
> >> problem.
> >> Kind regards
> >>
> >> Zlatka Mihaylova
> >> Backend-/ Java Developer
> >>
> >>
> >>
> ------------------------------------------------------------------------------
> >> Site24x7 APM Insight: Get Deep Visibility into Application Performance
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> >> Monitor end-to-end web transactions and take corrective actions now
> >> Troubleshoot faster and improve end-user experience. Signup Now!
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> >> _______________________________________________
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> >> Monitor end-to-end web transactions and take corrective actions now
> >> Troubleshoot faster and improve end-user experience. Signup Now!
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> >> _______________________________________________
> >> Stripes-users mailing list
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> >>
> >> End of Stripes-users Digest, Vol 113, Issue 4
> >> *********************************************
> >>
> >
> >
> >
> >
> ------------------------------------------------------------------------------
> > Site24x7 APM Insight: Get Deep Visibility into Application Performance
> > APM + Mobile APM + RUM: Monitor 3 App instances at just $35/Month
> > Monitor end-to-end web transactions and take corrective actions now
> > Troubleshoot faster and improve end-user experience. Signup Now!
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> Monitor end-to-end web transactions and take corrective actions now
> Troubleshoot faster and improve end-user experience. Signup Now!
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