OASIS Mailing List ArchivesView the OASIS mailing list archive below
or browse/search using MarkMail.


Help: OASIS Mailing Lists Help | MarkMail Help



   Re: XSchema Spec, Section 3, Draft 1 (Namespaces)

[ Lists Home | Date Index | Thread Index ]
  • From: John Cowan <cowan@locke.ccil.org>
  • To: xml-dev@ic.ac.uk
  • Date: Tue, 30 Jun 1998 11:45:21 -0400 (EDT)

james anderson scripsit:

> and yes, this is an aspect of the namespace proposal (if not xml as a whole)
> which i believe is dented, if not broken: name qualification should apply to
> all values which either are tokens or denote tokens (ie the various attribute
> values and notations). othrwise the whole thing becomes unworkable.

The fact is that the Namespace draft as it is (which is what we have
to work with) doesn't provide for parsers doing colon-ectomies on
attribute values.  IMHO it shouldn't; there is no reason to think
a priori that an attribute value that happens to contain a colon
is necessarily a namespace-qualified name.  If XML had retained
attributes of type NAME, there might have been some case for them,
but NMTOKENs are just too broad.

[many "should"s deleted]

> it's not messy, it's very simple. don't think strings. think symbols. it
> doesn't matter where they came from, or what prefix they had at the time they
> wre interned, just whether or not they're equal. once they've been parsed, you
> should only ever have too look at the prefix again if you should need to
> serialize. - that's why the parser needs to intern all values which can are,
> or which can denote, tokens. 

But just which attribute values are those?  Lisp has syntax to distinguish
symbols from strings, but we have only inference: therefore, general
parsers must assume that attribute values are strings.

John Cowan					cowan@ccil.org
		e'osai ko sarji la lojban.

xml-dev: A list for W3C XML Developers. To post, mailto:xml-dev@ic.ac.uk
Archived as: http://www.lists.ic.ac.uk/hypermail/xml-dev/
To (un)subscribe, mailto:majordomo@ic.ac.uk the following message;
(un)subscribe xml-dev
To subscribe to the digests, mailto:majordomo@ic.ac.uk the following message;
subscribe xml-dev-digest
List coordinator, Henry Rzepa (mailto:rzepa@ic.ac.uk)


News | XML in Industry | Calendar | XML Registry
Marketplace | Resources | MyXML.org | Sponsors | Privacy Statement

Copyright 2001 XML.org. This site is hosted by OASIS