151 messages in org.w3.public-lodRe: Is 303 really necessary? (dealing...| From | Sent On | Attachments |
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| Leigh Dodds | Nov 5, 2010 2:28 am | |
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| Leigh Dodds | Nov 5, 2010 2:34 am | |
| Leigh Dodds | Nov 5, 2010 2:36 am | |
| Leigh Dodds | Nov 5, 2010 2:41 am | |
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| Ian Davis | Nov 5, 2010 3:16 am | |
| Ian Davis | Nov 5, 2010 3:24 am | |
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| Ian Davis | Nov 5, 2010 3:40 am | |
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| Ian Davis | Nov 5, 2010 3:59 am | |
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| Kingsley Idehen | Nov 5, 2010 8:18 am | |
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| Kingsley Idehen | Nov 5, 2010 9:35 am | |
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| David Booth | Nov 6, 2010 1:41 pm | |
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| Kingsley Idehen | Nov 6, 2010 4:07 pm | |
| David Booth | Nov 7, 2010 10:27 pm | |
| David Booth | Nov 7, 2010 10:27 pm | |
| Tore Eriksson | Nov 7, 2010 11:17 pm | |
| Toby Inkster | Nov 8, 2010 12:36 am | |
| Toby Inkster | Nov 8, 2010 2:10 am | |
| David Booth | Nov 8, 2010 6:39 am | |
| David Booth | Nov 8, 2010 6:42 am | |
| Norman Gray | Nov 8, 2010 7:51 am | |
| Toby Inkster | Nov 8, 2010 8:03 am | |
| David Booth | Nov 8, 2010 12:33 pm | |
| Lars Heuer | Nov 8, 2010 1:16 pm | |
| David Booth | Nov 8, 2010 1:35 pm | |
| Dave Reynolds | Nov 8, 2010 1:50 pm | |
| David Booth | Nov 8, 2010 3:34 pm | |
| Tore Eriksson | Nov 8, 2010 5:51 pm | |
| Dave Reynolds | Nov 9, 2010 6:36 am | |
| Lars Heuer | Nov 9, 2010 8:00 am | |
| Kjetil Kjernsmo | Nov 10, 2010 7:13 am | |
| Jason Borro | Nov 11, 2010 11:47 am | |
| David Booth | Nov 18, 2010 2:09 pm | |
| Kingsley Idehen | Nov 19, 2010 4:25 am | |
| David Booth | Nov 19, 2010 1:55 pm | |
| Kingsley Idehen | Nov 19, 2010 2:07 pm | |
| Nathan | Nov 19, 2010 2:57 pm | |
| Kingsley Idehen | Nov 19, 2010 5:55 pm | |
| Bob Ferris | Nov 26, 2010 6:15 am | |
| Nathan | Nov 26, 2010 6:29 am | |
| David Booth | Nov 26, 2010 9:32 am | |
| David Booth | Nov 26, 2010 9:48 am | |
| Kingsley Idehen | Nov 26, 2010 12:36 pm | |
| William Waites | Nov 26, 2010 1:47 pm | |
| Kingsley Idehen | Nov 26, 2010 6:05 pm | |
| Richard Light | Nov 27, 2010 4:47 am | |
| Tim Berners-Lee | Nov 27, 2010 12:24 pm | |
| William Waites | Nov 28, 2010 5:47 am | |
| Giovanni Tummarello | Nov 28, 2010 5:51 am | |
| Jiří Procházka | Nov 28, 2010 6:46 am | |
| Tim Berners-Lee | Nov 28, 2010 7:07 am | |
| Kingsley Idehen | Nov 28, 2010 9:45 am | |
| Jiří Procházka | Nov 28, 2010 12:51 pm | |
| Toby Inkster | Nov 28, 2010 3:27 pm | |
| Kingsley Idehen | Nov 28, 2010 3:47 pm | |
| Jiří Procházka | Nov 28, 2010 4:51 pm | |
| Kingsley Idehen | Nov 28, 2010 5:15 pm | |
| James Leigh | Nov 29, 2010 5:54 am | |
| Bob Ferris | Dec 14, 2010 2:54 pm | |
| Subject: | Re: Is 303 really necessary? (dealing with ambiguity) | |
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| From: | David Booth (dav...@dbooth.org) | |
| Date: | Nov 8, 2010 1:35:24 pm | |
| List: | org.w3.public-lod | |
On Mon, 2010-11-08 at 16:18 +0900, Tore Eriksson wrote:
Hi David,
David Booth wrote:
[ . . . ]
And others may well make statements about that web page. For example, someone crawling the web may make a statement saying that <http://iandavis.com/2010/303/toucan> returned 1027 bytes in response to a GET request. They may not say it in RDF -- they might say it in XML or any other language.
As long as they they are aware that they are talking about a specific representation of this resource I can't see any problem with this. If they think they are stating something about the resource itself, well they would be wrong even if the current URI was an "information resource". They apparently need to learn more about web technology - representations, caching, con-neg, &c.
How about:
"Ian Davis owns web page <http://iandavis.com/2010/303/toucan>."
"The content at <http://iandavis.com/2010/303/toucan> was last updated 7-Nov-2010."
"<http://iandavis.com/2010/303/toucan> has a page rank of 123,456,789."
Those statements are not talking about any specific representations, nor are they talking about the toucan. All are completely reasonable statements for someone knowing nothing about RDF to make.
[ . . . ]
So I don't think it is reasonable or realistic to think that we can *avoid* creating an ambiguity by returning additional RDF statements with the 200 response. Rather, the heuristic that you propose is a way for applications to *deal* with that ambiguity by tracking the provenance of the information: if one set of assertions was derived from an HTTP 200 response code, and another set of assertions was derived from an RDF document that you trust, then ignore the assertions that were derived from the HTTP 200 response code.
By not drawing ill-founded conclusions about the nature of the resource through the response code, ambiguity could have been avoided in the first place.
Apparently you and I disagree about what it means to be a web page. I personally know of no better qualification criterion for something being a web page than if that thing returns a 200 status code in response to a GET request. Perhaps one would characterize this as duck typing: http://en.wikipedia.org/wiki/Duck_typing What other criteria would you use?
-- David Booth, Ph.D. Cleveland Clinic (contractor) http://dbooth.org/
Opinions expressed herein are those of the author and do not necessarily reflect those of Cleveland Clinic.