Re: [Springframework-developer] Portlet Form Controllers

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I thought I heard somewhere a while ago the Spring
portlet support would be in 1.2?

Later
Rob
--- Juergen Hoeller <ju...@in...> wrote:

> As I said, a subproject is just under consideration.
> The alternative is to
> release the portlet support as part of the core
> Spring 1.3 distribution. The
> rationale of factoring out subprojects is to let the
> core concentrate on its
> current scope and not introduce completely new areas
> of functionality. A
> secondary goal is to limit the size of spring.jar.
> 
> The current core web support and web MVC framework
> is used by the portlet
> support underneath, for example to render views (at
> least that was the case
> last year). So Spring Portlet depends on Spring core
> web (even core web
> MVC), but not the other way round: a case for core
> web MVC staying part of
> the core distribution, but Portlet support
> (optionally) becoming a separate
> subproject.
> 
> Note that Spring's core web support is of interest
> to many people: not only
> to web application people, but also to rich client
> developers accessing
> HTTP-based remote services (running in a Servlet
> container). Portlet support
> is more specific and has a narrower target audience.
> 
> A further advantage of a separate subproject is that
> it can evolve more
> easily. Specific sample applications, tutorials,
> tools etc can be added
> without having to worry about scope or size of the
> core Spring distribution.
> 
> Anyway, this has not been decided yet and does not
> have to be decided right
> now. It's gonna become an important topic after the
> Spring 1.2 release,
> though.
> 
> Juergen
> 
> 
> 
> -----Original Message-----
> From:
>
spr...@li...
>
[mailto:spr...@li...]On
> Behalf
> Of Jean-Pol Landrain
> Sent: Friday, March 04, 2005 7:29 PM
> To: spr...@li...
> Subject: Re: [Springframework-developer] Portlet
> Form Controllers
> 
> 
> I quite agree with Rob. Except, of course, if you
> plan to create a
> subproject for Spring MVC too. This would allow a
> Spring "à la carte".
> This would keep the framework light, but would
> perhaps be a bit confusing to
> the users. Perhaps a "plugin" functionnality would
> be nice if the number of
> projects grows : you would have a core Spring and be
> able to plug in, for
> example by using a dedicated XML file, the other
> sub-projects you want to
> use. That's just an idea.
> 
> Cheers,
> Jean-Pol.
> 
> ----- Original Message -----
> From: "Rob Butler" <cro...@ya...>
> To:
> <spr...@li...>
> Sent: Friday, March 04, 2005 7:01 PM
> Subject: Re: [Springframework-developer] Portlet
> Form Controllers
> 
> 
> > Why would you have a separate sub-project for the
> > portlet support in Spring?  That would be like
> having
> > a separate sub-project for the web MVC stuff, and
> a
> > separate sub-project for the DAO related stuff,
> and
> > another one for AOP, etc.
> >
> > Later
> > Rob
> > --- Juergen Hoeller <ju...@in...>
> wrote:
> >
> >> Sounds like good stuff :-)
> >>
> >> On this occasion: Let's discuss the road to an
> >> official release of the
> >> Portlet support. We consider releasing the
> Portlet
> >> support as an official
> >> subproject, i.e. as a separate distribution and
> with
> >> a separate CVS module
> >> (or even separate CVS repository). The
> association
> >> would be similar to the
> >> just-announced Spring subproject status of Acegi
> >> Security, and the already
> >> established status of Spring RCP.
> >>
> >> Very importantly, the portlet subproject needs a
> >> dedicated developer team.
> >> Any volunteers? :-)
> >>
> >> Juergen
> >>
> >>
> >> -----Original Message-----
> >> From:
> >>
> >
>
spr...@li...
> >>
> >
>
[mailto:spr...@li...]On
> >> Behalf
> >> Of John Lewis
> >> Sent: Thursday, March 03, 2005 6:53 PM
> >> To:
> spr...@li...
> >> Subject: [Springframework-developer] Portlet Form
> >> Controllers
> >>
> >>
> >> We've been working on porting a fairly complex
> >> enterprise application
> >> from the Spring Servlet MVC framework to the
> Spring
> >> Portlet MVC
> >> framework.  As Nick Lothian and Rainer Schmitz
> >> discovered, the Form
> >> Controller hierarchy is difficult to port over
> from
> >> the Servlet area to
> >> the Portlet area because of the two-phase nature
> of
> >> portlet requests.
> >> Since we were porting a large number of existing
> >> controllers descended
> >> from AbstractController, AbstractFormController,
> or
> >> SimpleFormController, it was critical to that all
> >> the former
> >> functionality of these parent be present and that
> >> our logic work the
> >> same as before.
> >>
> >> Nick Lothian's version of
> >> SimplePortletFormController gave us a good
> >> starting point and helped us understand a lot of
> the
> >> issues with portlet
> >> development in general and with Spring portlets
> in
> >> particular.  However,
> >> a lot of our controllers manage database content,
> so
> >> we needed proper
> >> separation between the action and render phase of
> >> the request, which
> >> this controller did not give us.
> >>
> >> Rainer Schmitz's work went much further and
> provided
> >> the traditional
> >> hierarchy of controllers and further demonstrated
> >> the issues with
> >> separating out the two phases of the portlet
> >> request.  However, these
> >> still did not give us the complete control that
> we
> >> needed.  We
> >> especially needed a version of
> SimpleFormController
> >> that could handle
> >> the separation of the action logic from the
> render
> >> logic.
> >>
> >> Over the past few months we have developed a new
> set
> >> of the
> >> AbstractController, BaseCommandController,
> >> AbstractFormController, and
> >> SimpleFormController classes that we think
> >> rigorously address all the
> >> issues with portlet development and that have
> >> allowed us to port over
> >> existing servlet controllers with relative ease.
> >>
> >> We've included a portlet version of
> >> WebContentGenerator to give the
> >> controller classes their proper ancestry and
> provide
> >> control over things
> >> like content caching and access to the web
> >> application context and to
> >> centralized logging.
> >>
> >> We've also create a new set of the binding
> classes
> >> (PortletRequestDataBinder,
> >> PortletRequestParameterPropertyValues and
> >> PortletRequestBindingException) that support
> special
> >> field markers,
> >> correct problems with form elements such as radio
> >> buttons and
> >> checkboxes, and handle redisplay of invalid
> submits
> >> of non-string
> >> parameters properly.
> >>
> >> All of the classes are fully documented,
> including
> >> workflow descriptions
> >> in the controllers that cover the special nature
> of
> >> portlet development.
> >>
> >> Our hope is that these classes can handle the
> needs
> >> of everyone working
> >> with form controllers in Spring portlets and that
> >> these can be merged
> >> into the sandbox source code.
> >>
> >> The classes are posted in a zip file on the
> Spring
> >> Portlet Wiki page at:
> >>
> >
>
http://opensource.atlassian.com/confluence/spring/display/JSR168/
> >>
> >> The link to the file is (sorry for the long
> link):
> >>
> >
>
http://opensource.atlassian.com/confluence/spring/download/attachments/10/sp
> >> ring-portlet-controllers.zip
> >>
> >> Please send me any questions or comments you may
> >> have about these
> >> classes.  We are eager to support their adoption
> in
> >> the Spring Portlet
> >> community.
> >>
> >> John Lewis
> >> jl...@ar...
> >>
> >>
> >>
> >>
> >
>
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