W3C home > Mailing lists > Public > xmlschema-dev@w3.org > January 2003

Validating lax ANY content with W3C XML Schema validators

From: Anthony B. Coates <abcoates@londonmarketsystems.com>
Date: Wed, 15 Jan 2003 11:04:27 GMT
To: xmlschema-dev@w3.org
Message-Id: <E18YlMv-000A0p-00@scrabble.freeuk.net>

This is an issue that came out of a discussion on the public "newsml" list. 
NewsML has a "DataContent" element which can contain any non-NewsML content,
and the "xsd:any" validation is set to "lax".  Some NewsML users were unclear
how to add a Schema for the non-NewsML content, so I posted some examples (270K
ZIP file):


In one of my examples, "invalidContent.xml", the "xsd:any" content has a
Schema, and the content is intentionally invalid.  As I read the W3C XML Schema
spec, the "xsd:any" content should be validated using the Schema, and the error
should be flagged.  Turbo XML & XSV both flag the error as I would expect, but
XML Spy doesn't.  Xerces is ruled out because it ignores
"xsi:noNamespaceSchemaLocation" if there is also an "xsi:schemaLocation", and
so it can't validate my examples correctly.

Am I right in my expectation here, that lax "xsd:any" content should be able to
cause real validation errors whenever a Schema for that content can be found?

Anthony B. Coates
London Market Systems Limited
33 Throgmorton Street, London, EC2N 2BR 
Mobile/Cell: +44 (79) 0543 9026
[MDDL Editor (Market Data Definition Language), http://www.mddl.org/]
[FpML Arch WG Member (Financial Products Markup Language), http://www.fpml.org/]
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Received on Wednesday, 15 January 2003 06:10:27 UTC

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