Re: URN UUID question
Joel Kalvesmaki <kalvesmaki@gmail.com> Tue, 11 March 2014 19:31 UTC
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Date: Tue, 11 Mar 2014 15:31:11 -0400
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Subject: Re: URN UUID question
From: Joel Kalvesmaki <kalvesmaki@gmail.com>
To: Peter Saint-Andre <stpeter@stpeter.im>
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Thanks for the suggestion. I had considered that option, but the string must conform to XML schema's <anyURI>,[1] to suit the purposes I mentioned (RDF, etc.). And no <anyURI> may begin with a numeral. It would also be important to have a scheme that any human or computer would recognize immediately as a URN. I had also considered the following (where NN = a suitable project-specific abbreviation or dt = date-time, as a project-agnostic urn scheme): urn:uuid-NN:f60330fd-1900-44ac-a825-de70074e142e::2014-02-07Z urn:uuid-dt:f60330fd-1900-44ac-a825-de70074e142e::2014-02-07Z But would either one require registration with IANA? If so, what what's the process and is it worthwhile? I have heard of at least one project that has simply coined its own urn:NNN: scheme on its own, but I do not fully understand what consequences face anyone setting out on that direction. One other possibility occurs to me, that of treating the time-date stamp as a fragment identifier: urn:uuid:f60330fd-1900-44ac-a825-de70074e142e#2014-02-07Z But I suspect that would violate the RFC 4122 definition, no? Best wishes, jk [1] http://www.w3.org/TR/xmlschema-2/#anyURI On Tue, Mar 11, 2014 at 1:24 PM, Peter Saint-Andre <stpeter@stpeter.im>wrote: > On 3/4/14, 8:32 AM, Joel Kalvesmaki wrote: > >> I am developing an XML data model that requires users to name versions >> of a document. Each version's name should be unique, but patterned to >> allow anyone (human or computer) to associate it with the names of other >> versions of that document and to place it in chronological sequence. The >> name of each version must be a single string, specifically a IRI/URI (to >> facilitate, among other things, straightforward declarations in RDF). It >> should not be split into two elements. Naming must be as decentralized >> as possible. >> >> My favored scheme for naming these entities would concatenate a UUID >> (any style), a middle delimiter, and an ISO date/dateTime, e.g., >> >> urn:uuid:f60330fd-1900-44ac-a825-de70074e142e::2014-02-07Z >> urn:uuid:f60330fd-1900-44ac-a825-de70074e142e::2014-02-28T00:20:58.3Z >> >> Would it be misleading to begin such a string with "urn:uuid:" and if >> so, what are the alternative best practices? >> >> Perhaps there already exists a urn scheme that does what I intend? >> >> Are there any other issues I should consider before adopting a naming >> scheme like this? >> > > As far as I can see, you don't really need or necessarily want the > "urn:uuid:" string at the front. Why not things like this? > > f60330fd-1900-44ac-a825-de70074e142e::2014-02-07Z > f60330fd-1900-44ac-a825-de70074e142e::2014-02-28T00:20:58.3Z > > Peter > > > -- Joel Kalvesmaki kalvesmaki.com
- URN UUID question Joel Kalvesmaki
- Re: URN UUID question Peter Saint-Andre
- Re: URN UUID question Joel Kalvesmaki
- Re: URN UUID question Peter Saint-Andre
- Re: URN UUID question Joel Kalvesmaki
- Re: URN UUID question Dale R. Worley
- Re: URN UUID question Joel Kalvesmaki
- Re: URN UUID question Martin J. Dürst
- Re: URN UUID question Sandro Hawke
- Re: URN UUID question Joel Kalvesmaki
- Re: URN UUID question Sandro Hawke
- Re: URN UUID question Dale R. Worley
- Re: URN UUID question Martin J. Dürst
- Re: URN UUID question Joel Kalvesmaki