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Re: XSD simpleType with final = extension
- From: Michael Kay <mike@saxonica.com>
- To: Mukul Gandhi <mukulg@softwarebytes.org>
- Date: Thu, 10 Mar 2022 08:33:27 +0000
Yesterday, we modified Apache Xerces's XSD 1.0 and 1.1 processor's source code, to allow 'extension' as possible value of simpleType's attribute 'final'.
The Saxon code that accepts "extension" carries the comment
// The inclusion of EXTENSION here assumes the resolution of specification bug 2074 So in fact bug #5783 was a duplicate. The resolution of #2074 was to change XSD 1.0 to allow fixed="extension". But it was never implemented because the WG decided to focus on getting 1.1 finished rather than maintaining 1.0.
Michael Kay Saxonica
Following the paper trail on this leads to
which is a bug against XSD 1.0 that was never resolved. So I think the answer to your question is that it's a known bug in the spec.
In most cases, but perhaps not all, when there's a known bug in XSD 1.0, consulting XSD 1.1 will give you the preferred resolution.
Michael Kay Saxonica
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