- From: Pete Cordell <petexmldev@codalogic.com>
- Date: Wed, 17 Nov 2010 18:39:55 -0000
- To: "Kevin Braun" <kbraun@obj-sys.com>
- Cc: <xmlschema-dev@w3.org>
Many thanks Kevin. It's exactly the same question. A case of it's wrong but it's right! Pete Cordell Codalogic Ltd Interface XML to C++ the easy way using C++ XML data binding to convert XSD schemas to C++ classes. Visit http://codalogic.com/lmx/ or http://www.xml2cpp.com for more info ----- Original Message ----- From: "Kevin Braun" <kbraun@obj-sys.com> To: "Pete Cordell" <petexmldev@codalogic.com> Cc: <xmlschema-dev@w3.org> Sent: Wednesday, November 17, 2010 6:27 PM Subject: Re: Extension of xs:simpleContent > > Hi, > > I believe under XSD 1.0 it is valid but under XSD 1.1 it would not be. > See http://lists.w3.org/Archives/Public/xmlschema-dev/2009Feb/0040.html > and the subsequent discussion; I believe it is the same question. > > Kevin > > On 11/17/2010 12:15 PM, Pete Cordell wrote: >> I have a customer who has a schema that extends a simple type double into >> a complex type with simple content, and then as a separate construct >> extends that into a complex type with complex content. They do this >> along the following lines: >> >> <xs:complexType name="DoubleBase"> >> <xs:simpleContent> >> <xs:extension base="xs:double"> >> <xs:attribute name="DoubleBaseAttr" type="xs:boolean"/> >> </xs:extension> >> </xs:simpleContent> >> </xs:complexType> >> >> <xs:complexType name="DoubleBaseExtension"> >> <xs:complexContent> >> <xs:extension base="DoubleBase"> >> <xs:attribute name="DoubleExtensionAttr" type="xs:boolean"/> >> </xs:extension> >> </xs:complexContent> >> </xs:complexType> >> >> (To avoid confusion, the intent of the latter is to add the >> DoubleExtensionAttr attribute rather than mandate that you've got >> complexContent.) >> >> My feeling is this is wrong because DoubleBaseExtension should specify >> xs:simpleContent rather than xs:complexContent. >> >> However, XML Spy and Visual Studio seem to accept the above, and the >> example is actually based on a industry consortium schema that specifies >> similar constructs. >> >> So my questions are: >> >> 1) Is the above schema correct or not? >> >> 2) If it is technically incorrect, is it widely occurring (possibly >> because tools fail to pick it up) and therefore worth overlooking this >> error? >> >> Thanks, >> >> Pete Cordell >> Codalogic Ltd >> Interface XML to C++ the easy way using C++ XML >> data binding to convert XSD schemas to C++ classes. >> Visit http://codalogic.com/lmx/ or http://www.xml2cpp.com >> for more info >> >> >> >> >> > >
Received on Wednesday, 17 November 2010 18:41:01 UTC