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   Re: URNs in SYSTEM declarations

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  • From: "Simon St.Laurent" <simonstl@simonstl.com>
  • To: XML-Dev Mailing list <xml-dev@ic.ac.uk>
  • Date: Wed, 20 Oct 1999 12:35:30 -0400

At 12:10 PM 10/20/99 -0400, Jerome McDonough wrote:
[excellent detailed answer to details of URN resolution]
>Not a huge problem to implement, as long as we don't see too huge an
>of protocols
>for contacting resolution services.  At the moment, however, THTTP and the
>system are about the only resolution protocols I've seen in use.

Next question... do any XML parsers support URNs?  Do they use these
resolution protocols?

Does a lack of support for URNs in any way affect XML conformance?  I tend
to doubt it, but it just popped up in a document I was working on and made
life interesting.

In the meantime, I think we're stuck with Miles Sabin's description of what
actually happened to me:
>if it had no way of resolving an http URI to an actual
>resouce: report an error.

URNs feel a lot like FPIs to me in terms of their resolvability and lack of
infrastructure thereof, and I often wonder if they really belong mixed with
URLs. Oh well.

Simon St.Laurent
XML: A Primer, 2nd Ed.
Building XML Applications
Inside XML DTDs: Scientific and Technical
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