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You may try this:
<?xml version="1.0" encoding="UTF-8"?>
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema"; elementFormDefault="
qualified" attributeFormDefault="unqualified">
Schema_A.xsd contains the simpleType
<xsd:simpleType name="myBaseString">
<xsd:restriction base="xsd:string">
<xsd:enumeration value="Football"/>
<xsd:enumeration value="Rugby"/>
</xsd:restriction>
</xsd:simpleType>
Schema_B.xsd extends this datatype using union
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema";
xmlns:foo = "http://foo/sports";
xmlns:base = "http://base/sports";
elementFormDefault="qualified" attributeFormDefault="unqualified">
<xs:import namespace="http://foo/sports"; schemaLocation="Schema_C.xsd
"/>
<xs:import namespace="http://base/sports"; schemaLocation="
Schema_A.xsd"/>
<xsd:simpleType name="myString">
<xsd:union memberTypes="base:myBaseString foo:Sports"/>
</xsd:simpleType>
Schema_C.xsd contains the new dataType
<xsd:simpleType name="Sports">
<xsd:restriction base="xsd:string">
<xsd:enumeration value="Elephant Wrestling"/>
</xsd:restriction>
</xsd:simpleType>
</xs:schema>
The simple type 'myString' is already restricted by enumerations and can
not be extended. Let me know how did you go.
Regards, nada
"Morcom, Harvey"
<Harvey.Morcom@KP To: <xml-dev@lists.xml.org>
MG.co.uk> cc:
Subject: [xml-dev] XML Schema - redefine
07/02/2004 12:52
AM
Is it possible to use <redefine> to extend a simpleType using union? I have
tried to achieve this using the approach below but with no luck, does
anybody know where I am going wrong?
For example,
Schema_A.xsd contains the simpleType
<xsd:simpleType name="myString">
<xsd:restriction base="xsd:string">
<xsd:enumeration value="Football"/>
<xsd:enumeration value="Rugby"/>
</xsd:restriction>
</xsd:simpleType>
Schema_B.xsd extends this datatype using union
<xs:import namespace="http://foo/sports";
schemaLocation="Schema_C.xsd"/>
<xsd:redefine schemaLocation="Schema_A.xsd">
<xsd:simpleType name="myString">
<xsd:union memberTypes="myString
foo:Sports"/>
</xsd:simpleType>
</xsd:redefine>
Schema_C.xsd contains the new dataType
<xsd:simpleType name="Sports">
<xsd:restriction base="xsd:string">
<xsd:enumeration value="Elephant
Wrestling"/>
</xsd:restriction>
</xsd:simpleType>
Thanks in advance
Harvey
> Harvey Morcom
> Knowledge Analyst
> harvey.morcom@kpmg.co.uk
> Tel: 782 8695 (020 7694 8695)
>
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