[XML-DEV Mailing List Archive Home] [By Thread] [By Date] [Recent Entries] [Reply To This Message] Re: XML Schema quiz: 3 elements and at least one must bepresen
That's nice, but there's no need to involve substitution groups to get the same result: <complexType name="ThreeElements"> <choice maxOccurs="unbounded"> <element name="A" type="string"/> <element name="B" type="string"/> <element name="C" type="string"/> </choice> </complexType> But I believe Roger does not want to allow multiple occurrences of the same element while the above allows that. Best Regards, George -- George Cristian Bina <oXygen/> XML Editor, Schema Editor and XSLT Editor/Debugger http://www.oxygenxml.com Andrew Welch wrote: >> Consider this problem: you have 3 elements - A, B, C - and you need at >> least one of them to be present in your XML instance document. > > How about: > > <xs:element name="baseType"/> > > <xs:element name="A" substitutionGroup="baseType"/> > <xs:element name="B" substitutionGroup="baseType"/> > <xs:element name="C" substitutionGroup="baseType"/> > > <xs:complexType name="whatever"> > <xs:sequence> > <xs:element ref="baseType" maxOccurs="unbounded"/> > </xs:sequence> > </xs:complexType> > > ? >
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