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Re: DNS based URIs that don't imply access method

• To: "Simon St.Laurent" <simonstl@s...>
• Subject: Re: DNS based URIs that don't imply access method
• From: Uche Ogbuji <uche.ogbuji@f...>
• Date: Thu, 25 Jul 2002 15:06:42 -0600
• Cc: "'xml-dev@l... '" <xml-dev@l...>
• In-reply-to: Message from "Simon St.Laurent" <simonstl@s...> of "Thu, 25 Jul 2002 12:51:45 EDT." <4.2.0.58.20020725124248.01946930@p...>
• Sender: uche.ogbuji@f...

> At 09:37 AM 7/25/2002 -0800, Tim Bray wrote:
> >That granted, when actual programmers sit down to write actual code that 
> >deals with actual namespace-labeled markup, the implementions are 
> >straightforward and interoperate well, I have yet to hear a *single* story 
> >of an actual implementation problem caused by the URIness of namespace names.
> 
> I think you must encounter a different group of "actual programmers" than I do.
> 
> For a brief description of the kinds of problems I've heard in the field 
> (at conferences and an ACM tutorial), see:
> http://lists.xml.org/archives/xml-dev/200207/msg00965.html

From my POV, Tim's point comes out unscathed.

To the extent that I understand your three candidates for interop 
problems (and I think I only vaguely understand them), I don't see how any of 
them are code-level implementation problems.  I also haven't really seen such 
problems in practice, though I must admit that the various Python XML 
developers are a relatively close bunch and misunderstandings get hashed out 
rapidly.

I must say that, having implemented many technologies that use XMLNS: DOM, 
SAX2, XPath, XSLT, XLink, RDF, etc.  I haven't run into any implementation 
problems deriving from the basic URI-ness of namespaces.  I have run into 
implementation problems based on the interpretation of XMLNS: DOM and RDF 
being the glaring examples.  But this is a different class of problems and I 
can imagine their having occurred if somethign other than URI were used for 
NSRefs.


-- 
Uche Ogbuji                                    Fourthought, Inc.
http://uche.ogbuji.net    http://4Suite.org    http://fourthought.com
Track chair, XML/Web Services One Boston: http://www.xmlconference.com/
Basic XML and RDF techniques for knowledge management, Part 7 - 
http://www-106.ibm.com/developerworks/xml/library/x-think12.html
Keeping pace with James Clark - http://www-106.ibm.com/developerworks/xml/libra
ry/x-jclark.html
Python and XML development using 4Suite, Part 3: 4RDF - 
http://www-105.ibm.com/developerworks/education.nsf/xml-onlinecourse-bytitle/8A
1EA5A2CF4621C386256BBB006F4CEC

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