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RE: [xml-dev] Restrictions on existence of attributes?
- To: "'Eric van der Vlist'" <vdv@...>,<xml-dev@...>
- Subject: RE: [xml-dev] Restrictions on existence of attributes?
- From: "Michael Kay" <mike@...>
- Date: Wed, 28 Jun 2006 10:32:48 +0100
- In-reply-to: <1151476826.29266.28.camel@...>
- Thread-index: Acaafeko7P0qkSmKRKqWKyPqLBrfWAAFryFA
> 1) the error messages that you get when there are several
> attributes would be misleading for end users
That doesn't seem a convincing argument. Saxon says:
Validation error on line 1 column 20 of file:/c:/temp/test.xml:
Identity constraint {uniqueAtt}: the field selects more than one node (See
http://www.w3.org/TR/xmlschema-1/#cvc-identity-constraint clause 3)
Not exactly ideal for "end users", but it's no more obscure than the error
messages for many other validation errors.
> 2) W3C XML Schema processors differ in their interpretation
> of the spec on this point and this leads to interoperability issues.
That's an even less convincing argument. If a schema processor doesn't
conform to the spec, then don't use it.
Michael Kay
http://www.saxonica.com
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