Re: Naive question on redirection.

I should have prefaced my comments by saying that I've never dug deeply 
into this, and have just tried to learn from what I've heard and seen 
from others. So I'm speaking from a position of inexperience.

Alan Ruttenberg wrote:

>> <http://thefigtrees.net/id> a foaf:PerosnalProfileDocument .
>>
>> 302's based on Accept: headers to either
>>
>> http://thefigtrees.net/id.n3
>> http://thefigtrees.net/id.rdf
> 
> That's not how CN is supposed to work. You respond to the request with 
> the representation, not with a redirection. The Location header is where 
> the resource is. 302 is different.

I got my example from the recent SWEO publication, "Cool URIs for the 
Semantic Web". Please see:

http://www.w3.org/TR/cooluris/#conneg

is that example incorrect?

Lee

> 
> 302 Found
> The requested resource resides temporarily under a different URI. Since 
> the redirection might be altered on occasion, the client SHOULD continue 
> to use the Request-URI for future requests.
> 
> Not: you can find a different resource - a fixed resources, which 
> happens to have an awww:representation that is the same as the one 
> redirected from.
> 
>> What if I wanted to include an ex:mimeType triple about the latter ones?
> 
> Go ahead. However I don't think 302 is appropriate in that case. Respond 
> with the representation to the original request, and put these URLs in 
> the Location: header. Then there is no encumbrance.
> 
>>
>> <http://thefigtrees.net/id.rdf> a foaf:PerosnalProfileDocument ; 
>> ex:mimeType "application/rdf+xml" .
>>
>> Or are you suggesting that this is some strange one-way equivalence? 
>> (If X -- 302 --> Y and X p q then Y p q?)
> 
> I'm not trying to suggest anything. I'm trying to answer according to 
> what the specs say. I'd be happy to be shown to be wrong, either because 
> the specs don't mean what I think they do, or because there is 
> contradictory information somewhere else, or with an assertion that the 
> specs need to be fixed.
> 
> -Alan
> 
> (don't you just love those "naive" questions?)
> 
>> Lee
>>
>>> On Jun 6, 2008, at 4:57 AM, Phil Archer wrote:
>>>>
>>>> Suppose I have this triple
>>>>
>>>> <http://example.org/> ex:colour "red"
>>>>
>>>> and when I dereference the URI I get a 302 redirect to 
>>>> http://www.example.org/home.asp.
>>>>
>>>> Do I know what colour http://www.example.org/home.asp is?
>>>>
>>>> I'm pretty sure the answer's no, but has anyone else grappled with 
>>>> the joys of redirects in this way?
>>>>
>>>> Phil.
>>>>
>>>> -- 
>>>> Phil Archer
>>>> Chief Technical Officer,
>>>> Family Online Safety Institute
>>>> w. http://www.fosi.org/people/philarcher/
>>>>
>>>>
>>>>
>>>>
> 
>

Received on Friday, 6 June 2008 19:12:39 UTC