[jsr-314-open] required attributes in composite components

[Kito Mann]

On Tue, Apr 7, 2009 at 8:56 AM, Martin Marinschek <mmarinschek at apache.org>wrote:

> Then I am for strict.


Ok. So, the final proposal is that we add an attribute to
<composite:interface>:

strict="{true|false}"

When strict is true, any use of an attribute which is not required will
throw an exception (I'm not sure which exception, but I expect that others
do).

Ed or Roger?


>
>
> On 4/3/09, Pete Muir <pmuir at redhat.com> wrote:
> > Just one :-)
> >
> > On 3 Apr 2009, at 17:54, Kito Mann wrote:
> >
> >> Are suggesting both of those options or just one?
> >>
> >> Sent from my iPhone
> >>
> >> http://www.jsfcentral.com
> >> http://www.Virtua.com
> >>
> >>
> >> On Apr 3, 2009, at 2:50 PM, Pete Muir <pmuir at REDHAT.COM> wrote:
> >>
> >>> Yes, I like the idea. I was trying to think about attribute names,
> >>> as restrictAttributes feels wrong. How about
> >>>
> >>> * strict="{true|false}"
> >>> * complete="{true|false}"
> >>>
> >>> On 2 Apr 2009, at 12:56, Kito Mann wrote:
> >>>
> >>>> So, here's one other thing that came up at JSFDays -- the fact
> >>>> that composite components (like Facelet compositions) don't
> >>>> restrict which attributes can be used. This is fine for Facelet
> >>>> compositions, but since composite components can define specific
> >>>> attributes, it makes sense to give component authors the ability
> >>>> to restrict page authors to those attributes.
> >>>>
> >>>> I think the easiest way to handle this from a component author's
> >>>> perspective would be to add an attribute to the
> >>>> <component:interface> tag:
> >>>>
> >>>> <component:interface restrictAttributes="true">
> >>>> <component:attribute name="name" required="true"/>
> >>>> <component:attribute name="size"/>
> >>>> </component:interface>
> >>>>
> >>>> So, in this case, this component would _only_ accept the name and
> >>>> size attributes, and the runtime would throw an exception if
> >>>> another attribute were used. An IDE could also complain when
> >>>> someone tried to use a different attribute.
> >>>>
> >>>> Thoughts?
> >>>> ---
> >>>> Kito D. Mann -- Author, JavaServer Faces in Action
> >>>> http://twitter.com/kito99  http://twitter.com/jsfcentral
> >>>> http://www.virtua.com - JSF/Java EE consulting, training, and
> >>>> mentoring
> >>>> http://www.JSFCentral.com - JavaServer Faces FAQ, news, and info
> >>>> +1 203-404-4848 x3
> >>>>
> >>>> Public JSF Course in NYC (April 21st-24th):
> >>>> http://www.regonline.com/jsf-course
> >>>>
> >>>
> >>> --
> >>> Pete Muir
> >>> http://www.seamframework.org
> >>> http://in.relation.to/Bloggers/Pete
> >
> > --
> > Pete Muir
> > http://www.seamframework.org
> > http://in.relation.to/Bloggers/Pete
> >
> >
>
>
> --
>
> http://www.irian.at
>
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