<?xml version='1.0'?> | |
<!DOCTYPE xs:schema PUBLIC "-//W3C//DTD XMLSCHEMA 200102//EN" "XMLSchema.dtd" > | |
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Copyright 2004 The Apache Software Foundation | |
Licensed under the Apache License, Version 2.0 (the "License"); | |
you may not use this file except in compliance with the License. | |
You may obtain a copy of the License at | |
http://www.apache.org/licenses/LICENSE-2.0 | |
Unless required by applicable law or agreed to in writing, software | |
distributed under the License is distributed on an "AS IS" BASIS, | |
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or | |
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See the License for the specific language governing permissions and | |
limitations under the License. | |
--> | |
<xs:schema targetNamespace="http://www.w3.org/XML/1998/namespace" xmlns:xs="http://www.w3.org/2001/XMLSchema" xml:lang="en"> | |
<xs:annotation> | |
<xs:documentation> | |
See http://www.w3.org/XML/1998/namespace.html and | |
http://www.w3.org/TR/REC-xml for information about this namespace. | |
</xs:documentation> | |
</xs:annotation> | |
<xs:annotation> | |
<xs:documentation>This schema defines attributes and an attribute group | |
suitable for use by | |
schemas wishing to allow xml:base, xml:lang or xml:space attributes | |
on elements they define. | |
To enable this, such a schema must import this schema | |
for the XML namespace, e.g. as follows: | |
<schema . . .> | |
. . . | |
<import namespace="http://www.w3.org/XML/1998/namespace" | |
schemaLocation="http://www.w3.org/2001/03/xml.xsd"/> | |
Subsequently, qualified reference to any of the attributes | |
or the group defined below will have the desired effect, e.g. | |
<type . . .> | |
. . . | |
<attributeGroup ref="xml:specialAttrs"/> | |
will define a type which will schema-validate an instance | |
element with any of those attributes</xs:documentation> | |
</xs:annotation> | |
<xs:annotation> | |
<xs:documentation>In keeping with the XML Schema WG's standard versioning | |
policy, this schema document will persist at | |
http://www.w3.org/2001/03/xml.xsd. | |
At the date of issue it can also be found at | |
http://www.w3.org/2001/xml.xsd. | |
The schema document at that URI may however change in the future, | |
in order to remain compatible with the latest version of XML Schema | |
itself. In other words, if the XML Schema namespace changes, the version | |
of this document at | |
http://www.w3.org/2001/xml.xsd will change | |
accordingly; the version at | |
http://www.w3.org/2001/03/xml.xsd will not change. | |
</xs:documentation> | |
</xs:annotation> | |
<xs:attribute name="lang" type="xs:language"> | |
<xs:annotation> | |
<xs:documentation>In due course, we should install the relevant ISO 2- and 3-letter | |
codes as the enumerated possible values . . .</xs:documentation> | |
</xs:annotation> | |
</xs:attribute> | |
<xs:attribute name="space" default="preserve"> | |
<xs:simpleType> | |
<xs:restriction base="xs:NCName"> | |
<xs:enumeration value="default"/> | |
<xs:enumeration value="preserve"/> | |
</xs:restriction> | |
</xs:simpleType> | |
</xs:attribute> | |
<xs:attribute name="base" type="xs:anyURI"> | |
<xs:annotation> | |
<xs:documentation>See http://www.w3.org/TR/xmlbase/ for | |
information about this attribute.</xs:documentation> | |
</xs:annotation> | |
</xs:attribute> | |
<xs:attributeGroup name="specialAttrs"> | |
<xs:attribute ref="xml:base"/> | |
<xs:attribute ref="xml:lang"/> | |
<xs:attribute ref="xml:space"/> | |
</xs:attributeGroup> | |
</xs:schema> |