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From Ernesto Reinaldo Barreiro <reier...@gmail.com>
Subject Re: What is the proper way to start a secondary process in Wicket 6
Date Thu, 20 Nov 2014 13:47:21 GMT
Martin,

I have created

https://github.com/reiern70/antilia-bits/tree/master/bgprocess

My only caveats are

https://github.com/reiern70/antilia-bits/blob/master/bgprocess/src/main/java/com/antilia/panel/TasksListPanel.java#L50

and

https://github.com/reiern70/antilia-bits/blob/master/bgprocess/src/main/java/com/antilia/panel/TasksListPanel.java#L70

I had to re-add Timer behavior: I do not see yet why? It is as if the timer
is not re-rendered: they are not isTemporar :-( I will check when I have
more time.

I would appreciate if you can review the code... before I write anything on
my fork  of Wicket in Action. This probably could be done in a leaner way
mounting a resource to serve JSON for task states and building the UI at
client side... But example illustrates how to do it with "plain Wicket".


On Thu, Nov 20, 2014 at 8:40 AM, Ernesto Reinaldo Barreiro <
reiern70@gmail.com> wrote:

> Ok. Let me see what I can do this weekend while I wait for my son to
> finish he's shower after he's football match  ;-)
>
> On Thu, Nov 20, 2014 at 8:30 AM, Martin Grigorov <mgrigorov@apache.org>
> wrote:
>
>> Sure! Thanks!
>> It could be as fancy as you wish.
>>
>> Martin Grigorov
>> Wicket Training and Consulting
>> https://twitter.com/mtgrigorov
>>
>> On Thu, Nov 20, 2014 at 10:17 AM, Ernesto Reinaldo Barreiro <
>> reiern70@gmail.com> wrote:
>>
>> > Can I give it a try? Something event showing some progress at client
>> side?
>> >
>> > On Thu, Nov 20, 2014 at 7:54 AM, Martin Grigorov <mgrigorov@apache.org>
>> > wrote:
>> >
>> > > Hi,
>> > >
>> > > Someday I'll write a blog (with a demo) about this at
>> > > http://wicketinaction.com.
>> > > The question is being asked regularly.
>> > >
>> > > Actually anyone can send a Pull Request at
>> > > https://github.com/dashorst/wicketinaction.com with such article.
>> > >
>> > > Martin Grigorov
>> > > Wicket Training and Consulting
>> > > https://twitter.com/mtgrigorov
>> > >
>> > > On Thu, Nov 20, 2014 at 7:26 AM, Ernesto Reinaldo Barreiro <
>> > > reiern70@gmail.com> wrote:
>> > >
>> > > > Hi Warren,
>> > > >
>> > > >
>> > > > On Thu, Nov 20, 2014 at 12:46 AM, Warren Bell <
>> warrenbell2@gmail.com>
>> > > > wrote:
>> > > >
>> > > > > I am using Wicket 6 REST annotations and want to asynchronously
>> > start a
>> > > > > process that writes some logging data to a db. I don’t need
the
>> > > response
>> > > > to
>> > > > > wait for this process. I have tried using threads, but I get
the
>> “App
>> > > not
>> > > > > attached to this thread” exception when I try to use an injected
>> > > service.
>> > > > > This logging process is a little more complicated than what log4j
>> or
>> > > > > loopback can do. The bottom line is that I do not want the
>> > > > request/response
>> > > > > process to have to wait for the logging process to complete.
What
>> is
>> > > the
>> > > > > proper way of doing this in Wicket 6 using an injected service.
>> > > > >
>> > > > > Sometimes  what I do is I create a context class ServiceHolder,
>> > inject
>> > > > what I need on this class (e.g. services) and pass this to the non
>> web
>> > > > thread (e.g as an argument to the runnable). Injector.inject will
>> have
>> > > > WicketApp in context.
>> > > >
>> > > >
>> > > > > 1) Get request
>> > > > > 2) Log some data (Do not wait for this to complete)
>> > > > > 3) Process request
>> > > > > 4) Return response
>> > > > >
>> > > >
>> > > > You could use the same ServiceHolder as a bridge to pass info to the
>> > WEB
>> > > > layer. 1) keep a reference to it 2) in another (polling) request
>> use it
>> > > to
>> > > > see how back-ground job is progressing. Sometimes I also use it to
>> > > control
>> > > > the Job: e.g. stop/pause it, cancel it. Once Job finishes just let
>> > > service
>> > > > holder "go".
>> > > >
>> > > >
>> > > > > Thanks,
>> > > > >
>> > > > > Warren Bell
>> > > > >
>> ---------------------------------------------------------------------
>> > > > > To unsubscribe, e-mail: users-unsubscribe@wicket.apache.org
>> > > > > For additional commands, e-mail: users-help@wicket.apache.org
>> > > > >
>> > > > >
>> > > >
>> > > >
>> > > > --
>> > > > Regards - Ernesto Reinaldo Barreiro
>> > > >
>> > >
>> >
>> >
>> >
>> > --
>> > Regards - Ernesto Reinaldo Barreiro
>> >
>>
>
>
>
> --
> Regards - Ernesto Reinaldo Barreiro
>



-- 
Regards - Ernesto Reinaldo Barreiro

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