[seam-dev] How to store data in contexts

[pmuir at redhat.com]

Well you haven't produced a good use case for needing this abstraction  
(legacy interaction aside, ad that willbe privided through the seam2  
layer). That would be a good start :-)

--
Pete Muir
http://in.relation.to/Bloggers/Pete

On 8 May 2009, at 08:29, Dan Allen <dan.j.allen at gmail.com> wrote:

> Yeah, I get that we want people to do it the new way. I just hate to  
> undo some of the convenience features we provided in the past for  
> when you have no choice but to do it the old way. I'm skeptical I  
> will win this debate though.
>
> -Dan
>
> On Fri, May 8, 2009 at 3:19 AM, Gavin King <gavin.king at gmail.com>  
> wrote:
> I really don't think this is a good idea. We should be encouraging
> people to use the New Way.
>
> On Fri, May 8, 2009 at 2:18 AM, Dan Allen <dan.j.allen at gmail.com>  
> wrote:
> > On Thu, May 7, 2009 at 9:06 AM, Gavin King <gavin.king at gmail.com>  
> wrote:
> >>
> >> Right.
> >>
> >> Contextual is there so that frameworks can put stuff in contexts  
> for
> >> "special" cases.
> >>
> >> It's not really meant to be used by application code or "normal"
> >> framework code. Stick the stuff in a bean, or use a producer  
> method.
> >
> > So the question was also brought up whether we should provide the  
> unified
> > API to the standard attribute maps in the Servlet and JSF APIs.  
> Ideally, of
> > course, you are using beans and producer methods to populate these  
> contexts.
> > But one of the major usability improvements provided by Seam was  
> the fact
> > that you had one way to access all contexts. Given that we have  
> all been
> > involved in writing applications for companies, you should know as  
> well as I
> > do that it's extremely common to have to use these attribute maps  
> for one
> > thing or another. It's life. Clint said in the meeting you can  
> always just
> > get a handle to that map the regular way. Let me remind you how  
> this is done
> > in JSF:
> >
> > application scope:
> >  
> FacesContext. 
> getCurrentInstance().getExternalContext().getApplicationMap()
> > request scope:
> >  
> FacesContext.getCurrentInstance().getExternalContext().getRequestMap()
> > session scope:
> >  
> FacesContext.getCurrentInstance().getExternalContext().getSessionMap()
> > view scope:  
> FacesContext.getCurrentInstance().getViewRoot().getViewMap()
> > flash scope: very bizarre mix of request map and some internal state
> >
> > All I'm saying is that I think Seam should provide producers that  
> expose
> > these maps so that they are injectable (as the type AttributeMap).  
> I'm not
> > saying we use these maps to manipulate or access beans. This is for
> > integration with legacy systems, storing data ad-hoc in a non- 
> JSR-299 way,
> > or whatever else the case may be. The question is going to come up  
> and I
> > think people will just look for solutions elsewhere  
> (sourceforge.net) to
> > patch Seam to provide something like this. It's not perfect. It's  
> life.
> >
> > -Dan
> >
> > --
> > Dan Allen
> > Senior Software Engineer, Red Hat | Author of Seam in Action
> >
> > http://mojavelinux.com
> > http://mojavelinux.com/seaminaction
> > http://in.relation.to/Bloggers/Dan
> >
> > NOTE: While I make a strong effort to keep up with my email on a  
> daily
> > basis, personal or other work matters can sometimes keep me away
> > from my email. If you contact me, but don't hear back for more  
> than a week,
> > it is very likely that I am excessively backlogged or the message  
> was
> > caught in the spam filters.  Please don't hesitate to resend a  
> message if
> > you feel that it did not reach my attention.
> >
>
>
>
> --
> Gavin King
> gavin.king at gmail.com
> http://in.relation.to/Bloggers/Gavin
> http://hibernate.org
> http://seamframework.org
>
>
>
> -- 
> Dan Allen
> Senior Software Engineer, Red Hat | Author of Seam in Action
>
> http://mojavelinux.com
> http://mojavelinux.com/seaminaction
> http://in.relation.to/Bloggers/Dan
>
> NOTE: While I make a strong effort to keep up with my email on a daily
> basis, personal or other work matters can sometimes keep me away
> from my email. If you contact me, but don't hear back for more than  
> a week,
> it is very likely that I am excessively backlogged or the message was
> caught in the spam filters.  Please don't hesitate to resend a  
> message if
> you feel that it did not reach my attention.
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