- From: Leigh Dodds <leigh.dodds@talis.com>
- Date: Thu, 20 Oct 2011 06:26:36 +0100
- To: nathan@webr3.org
- Cc: Kingsley Idehen <kidehen@openlinksw.com>, public-lod@w3.org
Hi, On 19 October 2011 23:36, Nathan <nathan@webr3.org> wrote: > Leigh Dodds wrote: >> >> On 19 October 2011 20:48, Kingsley Idehen <kidehen@openlinksw.com> wrote: >>> >>> On 10/19/11 3:16 PM, Leigh Dodds wrote: >>>> >>>> RFC3983: >>>> >>>> "A Uniform Resource Identifier (URI) is a compact sequence of >>>> characters that identifies an abstract or physical resource." >>> >>> Yes, I agree with that. >>>> >>>> 2 URIs, therefore 2 resources. >>> >>> I disagree with your interpretation though. >> >> But I'm not interpreting anything there. The definition is a URI >> identifies a resource. Ergo two different URIs identify two resources. > > Nonsense, and I'm surprised to hear it. > > Given two distinct URIs the most you can determine is that you have two > distinct URIs. > > You do not know how many resources are identified, there may be no > resources, one, two, or full sets of resources. > > Do see RFC3986, especially the section on equivalence. > OK, so maybe there is interpretation here :) My reading is that, without additional knowledge, we should assume that different URIs identify different resources. I think the wording of RFC 3986 is fairly clear that a URI identifies a resource, so assuming multiple resources for multiple URIs is fine - as a starting position. I do understand that two URIs can be aliases. The section on equivalence you refer to suggests ways to identify equivalence ranging from syntactic comparisons up to network protocol operations. The latter gives us additional information (status codes, headers) that can determine equivalence. To go back to Kingsley's original example, I don't see any equivalence of those URIs at the syntactic or network level L. -- Leigh Dodds Product Lead, Kasabi Mobile: 07850 928381 http://kasabi.com http://talis.com Talis Systems Ltd 43 Temple Row Birmingham B2 5LS
Received on Thursday, 20 October 2011 05:27:14 UTC