- From: Jeni Tennison <jeni@jenitennison.com>
- Date: Sun, 6 Jan 2002 23:18:58 +0000
- To: "Gerson Mizuta Weiss" <weiss@cpqd.com.br>
- CC: xmlschema-dev@w3.org
Hi Gerson, > I would like to know if it is possible to extend a xsd type (like > xs:string) without having to define global SimpleTypes. For example, > I have to define many string type attributes, but all of them have > different lenghts. You can't *extend* simple types, but you can *restrict* them (which is what I think you're trying to do), in almost exactly the way that you've done it - you can have anonymous simple types nested within xs:attribute elements to specify the type of the particular attribute. So with: > <xs:attribute name = "value1" type="xs:string" use="required"/> > <!-- where the max length is 30 > <xs:attribute name = "value2" type= "xs:string" use="required"/> > <!-- where the max length is 20 > ... > <xs:attribute name = "value3" type= "xs:string" use="required"/> > <!-- where the max length is 11 You can have: <xs:attribute name = "value1" use="required"> <xs:simpleType> <xs:restriction base="xs:string"> <xs:maxLength value="30"/> </xs:restriction> </xs:simpleType> </xs:attribute> <xs:attribute name = "value2" use="required"> <xs:simpleType> <xs:restriction base="xs:string"> <xs:maxLength value="20"/> </xs:restriction> </xs:simpleType> </xs:attribute> And so on. Cheers, Jeni --- Jeni Tennison http://www.jenitennison.com/
Received on Sunday, 6 January 2002 18:19:00 UTC