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RE: a namespace definitions related question(s)

• From: "Shlomo Yona" <S.Yona@F...>
• To: "Pete Cordell" <petexmldev@t...>
• Date: Tue, 20 Feb 2007 07:55:10 -0800

Thanks for the detailed answer.

If my XML processor is not only parsing but also validating and namespace aware, it seems natural to expect it to allow/tolerate examples such as the one I gave.

What I'm asking is, is there a downside to "semantically" matching start/end tags by using namespace information?

Another questions is: what happens with attributes:

	<foo:bar xmlns:foo="foobar" foo:a="b" a="c"/>

Is there a "collision" between foo:a and a?

Shlomo.

-----Original Message-----
From: Pete Cordell [mailto:petexmldev@t...] 
Sent: â 20 ôáøåàø 2007 12:11
To: Shlomo Yona
Cc: xml-dev@l...
Subject: Re:  a namespace definitions related question(s)

Original Message From: "Shlomo Yona" <S.Yona@F...>

> In the XML instance that I posted:
> * is the document well formed?

No - because in your example the end tag name does not match the start tag 
name.  I think in one of the earlier XML versions it says that the end tag 
name must 'echo' the start tag name which I think is clearer in what the 
intent it.

> Should XML processors be XML-Namespace aware?

They needn't be, but it's good if they are.

> Say I have a schema, is the well-formedness dependent upon the schema??

No - well formedness is purley an XML issue about whether start tags are 
matched by end tags, attributes have the right quotation marks and so on.

A schema will help determine whether a particular (well-formed) XML instance 
is 'valid' against that schema.

> What I'm asking is whether or not an XML parser should be namespace
> aware, and whether or not its capabilities should depend (and how) on a
> schema.

It is possible to define XML schemas that specify XML documents that don't 
use namespaces.  In that case the XML processor needn't be namespace aware. 
Although it's unlikely that you'll find a schema aware validating XML 
processor that is not namespace aware.

HTH,

Pete.
=============================================
Pete Cordell
Tech-Know-Ware Ltd
for XML to C++ data binding visit
http://www.tech-know-ware.com/lmx
(or http://www.xml2cpp.com)
=============================================

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• References:
  • Re: a namespace definitions related question(s)
    • From: "Pete Cordell" <petexmldev@t...>