W3C home > Mailing lists > Public > public-lod@w3.org > November 2010

Re: Is 303 really necessary - demo

From: Kingsley Idehen <kidehen@openlinksw.com>
Date: Fri, 05 Nov 2010 12:51:49 -0400
Message-ID: <4CD43625.4020401@openlinksw.com>
To: Jörn Hees <j_hees@cs.uni-kl.de>
CC: public-lod@w3.org
On 11/5/10 10:41 AM, Jörn Hees wrote:
> Ah, it's magic in the header:
>
> curl -i http://iandavis.com/2010/303/toucan
> HTTP/1.1 200 OK
> Date: Fri, 05 Nov 2010 14:22:40 GMT
> Server: Apache/2.2.8 (Ubuntu) DAV/2 SVN/1.4.6 PHP/5.2.4-2ubuntu5.10 with
> Suhosin-Patch mod_wsgi/1.3 Python/2.5.2
> Content-Location: toucan.rdf
> Vary: negotiate
> TCN: choice
> Last-Modified: Fri, 05 Nov 2010 09:24:27 GMT
> ETag: "264186-403-4944ad745a8c0;4944ad754eb00"
> Accept-Ranges: bytes
> Content-Length: 1027
> Content-Type: application/rdf+xml; qs=0.9
>
> Notice the Content-Location field.

Try: 
http://linkeddata.uriburner.com/about/html/http/iandavis.com/2010/303/toucan

> curl -i http://iandavis.com/2010/303/toucan.rdf
> HTTP/1.1 200 OK
> Date: Fri, 05 Nov 2010 14:22:53 GMT
> Server: Apache/2.2.8 (Ubuntu) DAV/2 SVN/1.4.6 PHP/5.2.4-2ubuntu5.10 with
> Suhosin-Patch mod_wsgi/1.3 Python/2.5.2
> Last-Modified: Fri, 05 Nov 2010 09:24:27 GMT
> ETag: "264186-403-4944ad745a8c0"
> Accept-Ranges: bytes
> Content-Length: 1027
> Content-Type: application/rdf+xml; qs=0.9
>
> Well, I'd be ok with this, as it lowers the roundtrip problems of 303.
> But might take a long time till all tools support it and don't get confused.

Of course not, we only have a handful of tools in the Linked Data realm.
Implementing a new option should still be relatively cheap at this stage 
in the game.


> A bit offtopic:
> I'd rather see people putting information about a responsible sparql endpoint
> into the play.

Do you mean the ability to discover On (Green), Busy (Amber), and Off 
(Red) re. SPARQL endpoints? This sort of thing is coming, absolutely 
critical for SPARQL-FED.

> If you have that you can do a lot more / wiser things than
> crawling data which is incomplete anyhow (if you dereference a URI you can't
> expect to get all triples back, which are relevant for you, try
> http://dbpedia.org/resource/United_States (not the HTML page, but rdf+xml
> content negotiation and see that you don't even get a label but only incoming
> links)).
>
> Jörn
>
>


-- 

Regards,

Kingsley Idehen	
President&  CEO
OpenLink Software
Web: http://www.openlinksw.com
Weblog: http://www.openlinksw.com/blog/~kidehen
Twitter/Identi.ca: kidehen
Received on Friday, 5 November 2010 16:52:17 UTC

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