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RE: Potential new issue: PSVI considered harmful

From: Julian Reschke <julian.reschke@gmx.de>
Date: Thu, 13 Jun 2002 20:11:46 +0200
To: "Tim Bray" <tbray@textuality.com>, <www-tag@w3.org>
Message-ID: <JIEGINCHMLABHJBIGKBCGEDBEMAA.julian.reschke@gmx.de>

Tim Bray wrote:

> > [Dare Obasanjo] I agree that default values and type 
> information are orthogonal but they both exist in the PSVI 
> because it is the Post Schema Validation Infoset which means it 
> includes everything that can be obtained from validating an XML document. 
> 
> Sigh.  I'm arguing that both value defaulting and type annotation are 
> orthogonal to the process of validation.  Yes, this happens to be 
> produced as a side-effect of validation - but I can imagine doing type 
> annotation in a much more lightweight way than bringing a large complex 
> declarative schema facility to bear.  In fact, why shouldn't I just be 
> able to jam something into the instance or infoset saying "this 
> attribute here is an integer"?

Here's an example where an "infoset" is augmented with type information in absence of DTD, XDR or XML Schema:

<http://greenbytes.de/tech/webdav/draft-reschke-webdav-property-datatypes-latest.html>
Received on Thursday, 13 June 2002 14:12:38 UTC

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