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

Re: Documents, Cars, Hills, and Valleys

From: Mark Baker <mark.baker@sympatico.ca>
Date: Fri, 12 Apr 2002 00:14:42 -0400
To: Miles Sabin <miles@mistral.co.uk>
Cc: www-rdf-interest@w3.org
Message-ID: <20020412001442.B6699@www.markbaker.ca>
Miles and I were talking about this offline, so I might as well take it
back online.

There already exists a mechanism for helping resource publishers
assert the difference between a resource and its representation,
Content-Location.

Using the printer example, which isn't any different than any another
other example in this space (such as [1]), we could identify the printer
by;

http://example.org/some/printer/

and then the HTML "variant representation" (my term) of that printer
could be;

http://example.org/some/printer/index.html

This would be communicated as follows;

GET http://example.org/some/printer HTTP/1.1

response;

HTTP/1.1 200 Ok
Content-Type: text/html
Content-Location: http://example.org/some/printer/index.html
[blank line]
<html [...]

a GET on the index.html would return;

HTTP/1.1 200 Ok
Content-Type: text/html
[blank line]
<html [...]

Oh, and [1] also makes a good example for the use of Content-Location;

telnet lists.w3.org

HEAD http://lists.w3.org/Archives/Public/uri/2002Jan/0027 HTTP/1.1
Host: lists.w3.org

HTTP/1.1 200 OK
Date: Fri, 12 Apr 2002 03:55:28 GMT
Server: Apache/1.3.6 (Unix) PHP/3.0.9
Content-Location: 0027.html
Vary: negotiate
TCN: choice
Opt: "http://www.w3.org/2000/P3Pv1";ns=11
11-PolicyRef: /server-policy/p3p-20000613.xml
Last-Modified: Fri, 18 Jan 2002 06:31:33 GMT
ETag: "4fd650-1d93-3c47c145;3c553b38"
Accept-Ranges: bytes
Content-Length: 7571
Content-Type: text/html

 [1] http://lists.w3.org/Archives/Public/uri/2002Jan/0027

MB
-- 
Mark Baker, Chief Science Officer, Planetfred, Inc.
Ottawa, Ontario, CANADA.      mbaker@planetfred.com
http://www.markbaker.ca   http://www.planetfred.com
Received on Friday, 12 April 2002 00:08:35 GMT

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