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RE: URI for abstract concepts (domain, host, origin, site, etc.)

From: Eran Hammer-Lahav <eran@hueniverse.com>
Date: Sun, 28 Jun 2009 12:32:27 -0700
To: Erik Wilde <dret@berkeley.edu>, "uri@w3.org" <uri@w3.org>
Message-ID: <90C41DD21FB7C64BB94121FBBC2E723437833982F1@P3PW5EX1MB01.EX1.SECURESERVER.NET>
Using a URI template is one option being considered (XRD already has a <URITemplate> element under <Link> so the syntax is already part of XRD). However, that requires either creating a new element (like <SubjectTemplate>) or changing the XML schema type for <Subject> which currently does not allow anything but valid URIs.

But before we consider that, I wanted to see if there was an easy solution for describing such resources with a URI.


> -----Original Message-----
> From: uri-request@w3.org [mailto:uri-request@w3.org] On Behalf Of Erik
> Wilde
> Sent: Sunday, June 28, 2009 11:43 AM
> To: uri@w3.org
> Subject: Re: URI for abstract concepts (domain, host, origin, site,
> etc.)
> hello.
> Eran Hammer-Lahav wrote:
> > Let me try explaining my use case again, this time without any
> overloaded terminology or proposed solutions.
> > XRD is a document format for describing resources. It looks like
> this:
> > <XRD>
> > 	<Subject>http://example.com</Subject>
> > 	<Type>http://example.org/type/blog</Type>
> > 	<Link>
> > 		<Rel>author</Rel>
> > 		<URI>http://example.com/author</URI>
> > 	</URI>
> > </XRD>
> > Without getting too much into XRD, this short descriptor describes
> the resource identified by 'http://example.com'. It includes one type
> indicator (a made up example meant to mean this resource is a blog),
> and one link to the author's page.
> > I want to use this document format to describe rules that apply to
> all resources which belong to an HTTP host (as defined by 2616: a
> domain/address and port combination). The problem is, <Subject>
> requires a URI and currently there is no way to identify this set of
> resources (http://domain:port/*) as a valid URI.
> > What I don't want to do is use an exception such as 'if the URI
> begins with X, treat it as a rule and not a valid URI'...
> given this new description, isn't what you're looking for a URI
> template
> language for XRD? maybe not exactly the one currently proposed by
> http://tools.ietf.org/html/draft-gregorio-uritemplate-03, but isn't
> that
> close to what you want? a template notation would also nicely address
> the case mentioned already where the host scope would be too general.
> but then again, a URI template is not a URI, so you could use it in the
> context of XRD, but not as a standalone URI....
> cheers,
> erik wilde   tel:+1-510-6432253 - fax:+1-510-6425814
>         dret@berkeley.edu  -  http://dret.net/netdret
>         UC Berkeley - School of Information (ISchool)
Received on Sunday, 28 June 2009 19:33:10 UTC

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