- From: Henry S. Thompson <ht@cogsci.ed.ac.uk>
- Date: 22 Feb 2001 11:25:04 +0000
- To: Simon Cox <Simon.Cox@dem.csiro.au>
- Cc: xmlschema-dev@w3.org
Simon Cox <Simon.Cox@dem.csiro.au> writes: > "Henry S. Thompson" wrote: > > > > Simon Cox <Simon.Cox@dem.csiro.au> writes: > > > > > 1. I want to define an abstract element <_Observation>, > > > whose substitutionGroup includes elements such as > > > <Quantity> which has simple content of type xsd:double > > > <Value> with simple content of type xsd:string > > > <Count> with simple content of type xsd:nonNegativeInteger > > > > > > e.g. Can I define an abstract base type with no content > > > (complexType?), or of "anyType" (can this be a simpleType?), > > > and then "restrict" the base to the various simpleTypes? > > > > Yes. > > How? <xs:element name="_Observation" abstract="true"/> <xs:element name="Quantity" substitutionGroup="_Observation" type="xs:double"/> <xs:element name="Value" substitutionGroup="_Observation" type="xs:string"/> <xs:element name="Count" substitutionGroup="_Observation" type="xs:nonNegativeInteger"/> ht -- Henry S. Thompson, HCRC Language Technology Group, University of Edinburgh W3C Fellow 1999--2001, 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/
Received on Thursday, 22 February 2001 06:25:07 UTC