W3C home > Mailing lists > Public > www-rdf-interest@w3.org > April 2002

Re: Disambiguation; keeping the "U" in "URI"

From: Uche Ogbuji <uche.ogbuji@fourthought.com>
Date: Sat, 27 Apr 2002 13:16:25 -0600
Message-Id: <200204271916.g3RJGPH08256@localhost.localdomain>
To: Mark Baker <distobj@acm.org>
cc: www-rdf-interest@w3.org
> >  It 
> > does say that the C-L URI should become the base URI of the document, but this 
> > still seems too weak a stipulation for use in redirections scenarios.
> Right, it (C-L or a base URI) has nothing to do with redirection.
> Redirection is specified with the Location header on a 3xx response,
> not C-L.

Understood, but you seemed to have brought up C-L as an alternative in a 
situation where it seems to me only a redirect makes sense.

> > And now, bu mentioning content negotiation, you've caused an even deeper fog 
> > about my head.  I'm also quite sure how to associate C-L with either content 
> > negotiation in general (which I think of as getting a gif or png, as 
> > preferred, from the *same* URL),
> Right.
>  and redirects from ".../" URIs to 
> > ".../index.html" URLs (which seem more to me as general short-cut support than 
> > anything to do with clarifying ambiguity or negotiating content).
> C-L has nothing to do with redirection.
> Redirection is an assertion about the identity relationship between two
> resources; that they are equivalent, either for now (302), or for all
> time (301).
> Content-Location is a statement about the relationship between a bag of
> bits (the entity body of the message) and a resource, at one point in
> time (the time the request was made).

Well enough, and this does square with my reading of the RFC.

But then I'm not sure why you mentioned that people should be using C-L in 
cases of shortcutting ".../" URIs to ".../index.html", rather than using 
redirection.  Or did I misunderstand you?

It would seem to me that one cannot escape redirection for most conventional 
applications of this case.

Uche Ogbuji                           Fourthought, Inc.
uche.ogbuji@fourthought.com           http://fourthought.com
http://4Suite.org                     http://uche.ogbuji.net
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Received on Saturday, 27 April 2002 15:30:32 UTC

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