- From: Jerome Simeon <simeon@simeon-ltmh.research.bell-labs.com>
- Date: 22 Apr 2002 14:17:35 -0400
- To: "Henry S. Thompson" <ht@cogsci.ed.ac.uk>
- Cc: W3C XML Schema IG <w3c-xml-schema-ig@w3.org>, Jerome Simeon <simeon@research.bell-labs.com>, Philip Wadler <wadler@research.avayalabs.com>, www-xml-schema-comments@w3.org
Henry, Thank you. This will go right away in the semantics of XQuery! - Jerome and Phil On Mon, 2002-04-22 at 14:11, Henry S. Thompson wrote: > [technical discussion on the IG, please] > > Jerome Simeon <simeon@simeon-ltmh.research.bell-labs.com> writes: > > > Can a local element belong to a substitution group? > > > > We can find nothing in Schema Part I that prohibits this, but if it is > > permitted, it is not clear what it would mean. > > The Schema for Schemas rules this out: > > <xs:complexType name="localElement"> > <xs:complexContent> > <xs:restriction base="xs:element"> > . . . > <xs:attribute name="substitutionGroup" use="prohibited"/> > ^^^^^^^^^^^^^^^^ > </xs:restriction> > </xs:complexContent> > </xs:complexType> > > This only applies to the XML representation layer, of course. > > It's a bug that there's no clause in "Schema Component Constraint: > Element Declaration Properties Correct" ruling this out for components > as well. > > ht > -- > Henry S. Thompson, HCRC Language Technology Group, University of Edinburgh > W3C Fellow 1999--2002, part-time member of W3C Team > 2 Buccleuch Place, Edinburgh EH8 9LW, SCOTLAND -- (44) 131 650-4440 > Fax: (44) 131 650-4587, e-mail: ht@cogsci.ed.ac.uk > URL: http://www.ltg.ed.ac.uk/~ht/ > [mail really from me _always_ has this .sig -- mail without it is forged spam] -- Jerome Simeon - Bell Laboratories --- Lucent Technologies 600 Mountain Avenue, Murray Hill, NJ, USA Tel: +1 908 582 5473 Fax: +1 908 582 7308
Received on Monday, 22 April 2002 14:20:30 UTC