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RE: Thoughts on namespaces

From: Martin Bryan <mtbryan@sgml.u-net.com>
Date: Tue, 03 Jun 1997 08:19:04 +0100
Message-Id: <1.5.4.32.19970603071904.00694034@mail.u-net.com>
To: w3c-sgml-wg@w3.org
At 05:19 3/6/97 -0700, Tim Bray wrote:
>All of the namespace proposals have to solve two problems:
>
> 1. linking to the schema or whatever defines the namespace, and
> 2. signalling what namespace an element type is in (the colon stuff).
>
>For #1, we've had proposals for using elements and PI's and weird new
>marked section-like syntax.  Despite the fact that the problem has
>"link" in its name.  This could obviously done with xml-link given
>a reserved role like 
><x XML-link="extended" role="xml-namespace" href=".." short-prefix=".."/>
>
>Given that it can be, it should be.  Why not? -Tim

a) Because this only works in the instance - it doesn't let you define name
spaces in a DTD
b) Because it can only be used at places where x has been declared as valid
in the DTD, and XML does not allow inclusions!
c) Because the model of extended links is constrained, and I don't want to
constrain the model of every element in a namespace to this model.
----
Martin Bryan, The SGML Centre, Churchdown, Glos. GL3 2PU, UK 
Phone/Fax: +44 1452 714029   WWW home page: http://www.sgml.u-net.com/
Received on Tuesday, 3 June 1997 03:19:29 EDT

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