- From: <bugzilla@wiggum.w3.org>
- Date: Mon, 30 Jan 2006 18:35:54 +0000
- To: www-xml-schema-comments@w3.org
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http://www.w3.org/Bugs/Public/show_bug.cgi?id=2781 Summary: restriction relation among facet values needed Product: XML Schema Version: 1.1 only Platform: PC OS/Version: Linux Status: NEW Severity: normal Priority: P2 Component: Structures: XSD Part 1 AssignedTo: ht@w3.org ReportedBy: cmsmcq@w3.org QAContact: www-xml-schema-comments@w3.org Clause 1.3.2 of Schema Component Constraint: Derivation Valid (Restriction, Simple) in section 3.14.6 of Structures reads: 1.3.2 If there is a facet of the same kind in the {facets} of the {base type definition} (call this BF), then the DF's {value} is a valid restriction of BF's {value} as defined in [XML Schema: Datatypes]. The concept of one facet value being 'at least as strong as' another value for the same facet is a very useful one, and it is good that Structures appeals to it here. The problem is that this is a throw which the Datatypes spec does not catch very well: the notion is reasonably well covered with various component constraints about restrictions that are valid or invalid, but the Datatypes spec does not provide any single definition for the terminology used in the call from Structures, or for any other term for the concept. This is an editorial change that should be made before we finish.
Received on Monday, 30 January 2006 18:36:12 UTC