- From: Booth, David (HP Software - Boston) <dbooth@hp.com>
- Date: Tue, 18 Nov 2008 20:51:42 +0000
- To: Drummond Reed <drummond.reed@cordance.net>, "'Henry S. Thompson'" <ht@inf.ed.ac.uk>
- CC: "www-tag@w3.org" <www-tag@w3.org>, 'Peter Davis' <peter.davis@neustar.biz>, "jbradley@mac.com" <jbradley@mac.com>
Since I was active in this discussion earlier I just thought I chime in to say that I agree with Henry's comments. I think the XRI-as-Relative-URI idea is an excellent direction to go. David Booth, Ph.D. HP Software +1 617 629 8881 office | dbooth@hp.com http://www.hp.com/go/software Statements made herein represent the views of the author and do not necessarily represent the official views of HP unless explicitly so stated. > -----Original Message----- > From: www-tag-request@w3.org [mailto:www-tag-request@w3.org] > On Behalf Of Drummond Reed > Sent: Tuesday, November 18, 2008 2:41 PM > To: 'Henry S. Thompson' > Cc: www-tag@w3.org; 'Peter Davis'; jbradley@mac.com > Subject: RE: [XRI] XRI-as-Relative-URI proposal (ACTION-189 refers) > > > Henry, > > Thanks very much for the feedback. Sorry to be slow in > responding -- last > week we held the XRI TC F2F meeting after Internet Identity > Workshop in > Mountain View. > > Thankfully you posted your message before the meeting so we > were able to > discuss it there. See responses inline. > > > -----Original Message----- > > From: Henry S. Thompson [mailto:ht@inf.ed.ac.uk] > > Sent: Thursday, November 13, 2008 3:41 AM > > To: Drummond Reed > > Cc: www-tag@w3.org; 'Peter Davis'; jbradley@mac.com > > Subject: Re: [XRI] XRI-as-Relative-URI proposal (ACTION-189 refers) > > > > -----BEGIN PGP SIGNED MESSAGE----- > > Hash: SHA1 > > > > Drummond Reed writes: > > > > > [There's] a new proposal for how XRIs can better fit with AWWW > > > architecture. > > > . . . > > > The proposal is written up on an XRI TC wiki page at: > > > > > > http://wiki.oasis-open.org/xri/XriAsRelativeUri > > > > > > I've looked at this in some detail, and agree with others' comments > > that it looks like a very good direction to move in. > > > > I think the clarifications that have emerged in this thread wrt what > > you call the concrete/abstract distinction are important, and should > > be included, very carefully, in the eventual full specification. > > > > I have two remaining concerns: > > > > 1) Very little is said about where the necessary base URIs > are going > > to come from. This is almost certainly corrigible > going forward, > > that is, in a new specification, although it will have > to be done > > carefully, and, I hope, with reference to either the > Infoset [base > > URI] property [1] or XML Base [2] insofar as XML-expressed > > languages are concerned. Retrospective cleanup, for example wrt > > OpenID's usage of 'short' old-style XRIs such as =jbradley, will > > be more challenging, but should none-the-less be attempted I > > think. > > We agree that the XRI 3.0 specification must provide clear > guidance about > the base URI. We will be proactive about asking the TAG for > review of the > XRI 3.0 syntax and bindings specs as they proceed. > > > 2) I think the list of candidate schemes which may be used in > > XRI-signalling base URIs is too ambitious, > unnecessarily so as far > > as I can see. Including e.g. ftp: is surely to miss the 80-20 > > point by a long way. More seriously, including urn: is a big > > mistake. There is no well-defined notion of relative URN, or of > > absolutisation for URNs. URNs are not what RFC 3986 calls > > 'hierarchical identifiers', and the RFC says explicitly [3]: > > > > "relative references can only be used within the context of a > > hierarchical URI" > > > > Please just don't go there! > > The XRI TC agrees with you that XRI bindings should be to > hierarchical URI > schemes. At the F2F meeting we concluded that the initial > three XRI bindings > will be to http:, https:, and info:. We will consider > additional bindings as > required over time, but these three should give us plenty to > get started > with. > > Best, > > =Drummond > > > > [1] http://www.w3.org/TR/xml-infoset/#infoitem.element > > [2] http://www.w3.org/TR/xmlbase/ > > [3] http://www.apps.ietf.org/rfc/rfc3986.html#sec-1.2.3 > > - -- > > Henry S. Thompson, School of Informatics, University > of Edinburgh > > Half-time member of W3C Team > > 10 Crichton Street, Edinburgh EH8 9AB, SCOTLAND -- > (44) 131 650-4440 > > Fax: (44) 131 651-1426, e-mail: ht@inf.ed.ac.uk > > URL: http://www.ltg.ed.ac.uk/~ht/ > > [mail really from me _always_ has this .sig -- mail without > it is forged > > spam] > > -----BEGIN PGP SIGNATURE----- > > Version: GnuPG v1.2.6 (GNU/Linux) > > > > iD8DBQFJHBJIkjnJixAXWBoRAlZeAKCA92xk8cKVybPpNW3oNj2JlLiJ1gCfehZf > > DKtmOZjTB3RSLDfEktpUDoI= > > =rif+ > > -----END PGP SIGNATURE----- > > >
Received on Tuesday, 18 November 2008 20:53:08 UTC