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


Help: OASIS Mailing Lists Help | MarkMail Help



   Re: [xml-dev] life support for DTDs? was RE: [xml-dev] misprocessingname

[ Lists Home | Date Index | Thread Index ]

2/1/2002 11:29:44 AM, "Wayne Steele" <xmlmaster@hotmail.com> wrote:

> Another way to go about
> it would be to have a special transformation to "namespace-
> normalize" the instance document. This version would be used for 
> DTD Validation. The ns-normalized version could then be discarded, 
> and the actual instance document presented to the user or 
> application for further processing.
>Nobody has done this though, because it would require:
>1. changes to existing validating parsers
>2. consensus on how to write DTDs that would work with this process 
>DTDs for XML-Schema and XHTML for two different approaches).

Interesting idea.  DOM Level 3 does a good bit of this, 

a) providing a normalize method to clean up the namespace prefix:URI 
mappings -- although I'm not sure it cleans things up well enough to 
be useful for this job

b) provides an abstraction of both schemas and DTDs to allow in 
principle -- although again I'm not sure that the reality actually 
works well enough to really do what we want here -- validation of the 
normalized instance against a DTD rather than having the parse-time 
validation choke on the inconsistencies between DTDs and Namespaces.

I would encourage anyone interested in this use case to read the DOM 
Level 3 stuff and suggest tweaks that might support it. 


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

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