@SessionScoped has the downside that you cannot open multiple browser tabs with
different data. Think about having a list of Cars and then opening 2 different
car-edit dialoges in new browser tabs. That would not work using @SessionScoped
and is the reason why we invented @WindowScoped and consorts.
LieGrue,
strub
----- Original Message -----
> From: "Howard W. Smith, Jr." <smithh032...@gmail.com>
> To: MyFaces Discussion <users@myfaces.apache.org>
> Cc:
> Sent: Wednesday, November 21, 2012 11:55 AM
> Subject: Re: Migration to TomEE/CDI complete, regression testing,
> ViewAccessScoped
>
>T hanks Gerhard, will take a look.
>
> Honestly, @SessionScoped fits the current design of my app the best, only
> because I'm always returning null or void from bean to JSF
> commandButton/Link actionListener="...", and also, I have index.xhtml
> which
> is parent to all ui:include src="#{bean.page}".
>
> Honestly, I have not seen any memory issues at all in production, and I'm
> monitoring server log on Production, looking for nullpointerexceptions
> here/there, so I can resolve any/every 'exception' occuring in
> production,
> even if endusers don't see or 'report' the exception(s) to me. :)
>
> Usually I'm updating the JSF web app software almost daily, but because of
> this migration to TomEE/CDI, my focus has been there, and the server has
> been running well without restart/etc...
>
>
> On Wed, Nov 21, 2012 at 5:43 AM, Gerhard Petracek <
> gerhard.petra...@gmail.com> wrote:
>
>> hi howard,
>>
>> you can have a look at [1] (e.g. slide #9)
>> the mentioned public application is using codi scopes like
>> @ViewAccessScoped without any performance and/or memory issue.
>>
>> regards,
>> gerhard
>>
>> [1]
>> http://os890.blogspot.co.at/2012/11/slides-apache-myfaces-universe.html
>>
>> http://www.irian.at
>>
>> Your JSF/JavaEE powerhouse -
>> JavaEE Consulting, Development and
>> Courses in English and German
>>
>> Professional Support for Apache MyFaces
>>
>>
>>
>> 2012/11/21 Howard W. Smith, Jr. <smithh032...@gmail.com>
>>
>> > The most users that will be using the app concurrently is 4 to 5 users
>> (my
>> > family), and there are times that they are doing some 'heavy
> lifting'
>> > (database retrievals/updates, as well as PDF files generated in memory
>> and
>> > printed/viewed/emailed/faxed, and occasional data push to Google
> Calendar
>> > via Google Calendar API). Next, planning to automatically insert data
>> into
>> > database from public website's form results. Hoping to expand the
>> services
>> > of the 'app' to customers via the public website...one day.
>> >
>> > The (JSF/HTML5) web app is accessed in and out of the office on
> multiple
>> > platforms (laptops, iPad, multiple Android devices).
>> >
>> >
>> > On Wed, Nov 21, 2012 at 5:20 AM, Thomas Andraschko <
>> > andraschko.tho...@gmail.com> wrote:
>> >
>> > > Can i ask you how much users serves your app?
>> > > Currently our app takes only 20mb session size with 200 (or 100,
> can't
>> > > remember exactly) concurrent users and we don't use that much
>> > > View(Access)Scoped beans.
>> > >
>> > > 2012/11/21 Howard W. Smith, Jr. <smithh032...@gmail.com>
>> > >
>> > > > Thomas,
>> > > >
>> > > > Well, for now, I opt to do/use CDI @RequestScoped, ASAP,
> since
>> > production
>> > > > box/server is running Windows 2003 Server, where 4GB RAM is
>> > max...shaking
>> > > > my head. I'm sure we will upgrade when necessary, but
> right now that
>> > app
>> > > is
>> > > > lighting fast now with Glassfish 3.1.2.2 and MyFaces Core
> 2.1.9 and
>> > JUEL
>> > > > 2.2.5. :)
>> > > >
>> > > > Looking forward to the performance advantages/gains of
> OpenWebBeans.
>> :)
>> > > >
>> > > > Also, this Batoo JPA that you mentioned earlier, because
>> > > EclipseLink/Derby
>> > > > and Google Calendar requests/updates are the only 2
> bottlenecks in
>> the
>> > > app.
>> > > >
>> > > > Thanks,
>> > > > Howard
>> > > >
>> > > > On Wed, Nov 21, 2012 at 4:47 AM, Thomas Andraschko <
>> > > > andraschko.tho...@gmail.com> wrote:
>> > > >
>> > > > > Howard, there is nothing against
> ViewScoped/ViewAccessScoped.
>> > > > > But many data in ViewScoped/ViewAccessScoped leads to
> high memory
>> > > usage,
>> > > > so
>> > > > > it's better to use RequestScoped if possible.
>> > > > >
>> > > > > 2012/11/21 Howard W. Smith, Jr.
> <smithh032...@gmail.com>
>> > > > >
>> > > > > > I'd like to take time to thank you all that
> helped me migrate
>> from
>> > > > > > Glassfish 3.1.2.2 and JSF Managed beans to TomEE
> and CDI managed
>> > > > beans. I
>> > > > > > think the migration is complete. I am in
> regression testing
>> > > phase/mode
>> > > > > now.
>> > > > > > :)
>> > > > > >
>> > > > > > Special shout out to Thomas Andraschko, as his
> inputs in
>> PrimeFaces
>> > > > > forums
>> > > > > > and blogs, lead/motivated me to migrate from
> Mojarra 2.1.7 to
>> > MyFaces
>> > > > > Core
>> > > > > > 2.1.8 for fast (AJAX) rendering performance, and
> then he even
>> > > > recommended
>> > > > > > MyFaces Core, OpenWebBeans, JUEL for huge
> performance gains, and
>> > even
>> > > > > > today, he encouraged me to consider Batoo JPA, and
> because of
>> that,
>> > > > > > TomEE/OpenEJB and Batoo JPA are now discussing
> integration! :)
>> > > > > >
>> > > > > > Anyway, Jose, here, recommended CODI
> @ViewAccessScoped. I think
>> > > Thomas
>> > > > > and
>> > > > > > some other expert users in PrimeFaces Core forum
> recommended
>> > > > > @RequestScoped
>> > > > > > as much as possible throughout app, and
> recommended against JSF
>> > > > > @ViewScoped
>> > > > > > as well as CODI @ViewAccessScoped (I hope I'm
> not misquoting
>> > > > > them...smile).
>> > > > > >
>> > > > > > Honestly, I have no CDI @RequestScoped beans in my
> app; I need to
>> > > take
>> > > > > time
>> > > > > > to move some of my code from CDI @SessionScoped to
> CDI
>> > > @RequestScoped.
>> > > > > > Also, due to issues I experienced injecting EJBs
> inside of
>> > > > > @FacesConverter
>> > > > > > (which were added to CDI @SessionScoped beans)
> caused me to move
>> > all
>> > > my
>> > > > > > @FacesConverter classes to JSF @RequestScoped
> beans; that seems
>> to
>> > be
>> > > > > > working great, but Mark and Gerhard has already
> recommended CODI
>> > > > > > @Advanced/etc... to inject beans in
> @FacesConverter classes. I
>> need
>> > > to
>> > > > > give
>> > > > > > them a try even though I spent hours moving
> @FacesConverter
>> classes
>> > > > from
>> > > > > > CDI beans to JSF Managed beans...during this
> migration to CDI.
>> > > > > >
>> > > > > > So, please advise on whether I should use
> @ViewAccessScoped;
>> pros,
>> > > > cons,
>> > > > > > promote/hinder performance, etc...
>> > > > > >
>> > > > > > OR, should I move to CDI @RequestScoped, ASAP???
> :)
>> > > > > >
>> > > > > > Oh, Romain informed me that tomee.xml JDBC
> resources
>> automatically
>> > > have
>> > > > > > pooling. I hope that is the case, because as soon
> as regression
>> > > testing
>> > > > > is
>> > > > > > complete, I would like to push the new CDI version
> of my JSF web
>> > app
>> > > to
>> > > > > > production, and start using some of the other/neat
> features of
>> CDI,
>> > > > like
>> > > > > > CDI events where possible. :)
>> > > > > >
>> > > > > > Thanks,
>> > > > > > Howard
>> > > > > >
>> > > > >
>> > > >
>> > >
>> >
>>
>
