Web Resource Identity
Paul Prescod writes: > In the HyTime and object oriented worlds, I believe that the > defining characteristic of things with identity is that you can > take two references and determine if they refer to the same object. But you cannot always take two references and determine if they do *not* refer to the same object -- that depends on the design. > I do not see how to do this on the Web. Consider the following URLs: > > http://www.mitre.org/index.html > http://www.mitre.org/ > http://www.mitre.org > > Do they refer to the same resource? Let's try the answer both ways: You left out the Scotch verdict, "not proven". [snip] > I believe that the Web needs a concept of a canonical URL, if it doesn't > already have one. Retrieving a document or the HEAD for the document > should describe the canonical URL. I wouldn't mind if the canonical URL > was a totally unreadable UUID as long as I can take two URLs and figure > out whether they refer to two things that happen to have the same content > or actually refer to the SAME THING. Sounds like a simple enough extension to HTTP. All the best, David -- David Megginson david@m... http://www.megginson.com/ xml-dev: A list for W3C XML Developers. To post, mailto:xml-dev@i... Archived as: http://www.lists.ic.ac.uk/hypermail/xml-dev/ and on CD-ROM/ISBN 981-02-3594-1 To (un)subscribe, mailto:majordomo@i... the following message; (un)subscribe xml-dev To subscribe to the digests, mailto:majordomo@i... the following message; subscribe xml-dev-digest List coordinator, Henry Rzepa (mailto:rzepa@i...)
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