I don't know if what I want to do is possible or not, but I'd like to
have an xs:key in my schema that constrains attributes directly in a
document, as well as those in another document, included in the
first. Here's an example of what I'm trying to say:
FooList.xsd:
=============== =
<?xml version="1.0" encoding="UTF-8"?>
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema"
xmlns:xi="http://www.w3.org/2001/XInclude"
xmlns:FooList=" http://www.somecompany .com/FooList"
targetNamespace ="http://www.somecompany .com/FooList"
xmlns="http://www.trionworld. com" elementFormDefa ult="qualified" >
<xs:import namespace="http ://www.w3.org/2001/XInclude"
schemaLocation= "http://www.w3.org/2001/XInclude.xsd"/>
<!-- Range-limited data type for 'Bar' attributes on 'Foo's. An
xs:key will
constrain the value to be unique (can you extend/restrict xs:ID to
specify
both min and max? ...). -->
<xs:simpleTyp e name="BarAttr">
<xs:restricti on base="xs:nonNeg ativeInteger">
<xs:minExclusiv e value="0"/>
<xs:maxInclusiv e value="65535"/>
</xs:restriction>
</xs:simpleType>
<xs:complexTy pe name="Foo">
<xs:attribute name="Bar" type="FooList:B arAttr" use="required"/>
</xs:complexType>
<xs:element name="FooList">
<xs:complexType >
<xs:sequence minOccurs="0">
<xs:element ref="xi:include " minOccurs="0"
maxOccurs="unbo unded"/>
<xs:element name="Foo" type="FooList:F oo" minOccurs="0"
maxOccurs="unbo unded"/>
</xs:sequence>
</xs:complexType>
<xs:key name="PK_FooBar ">
<xs:selector xpath="FooList: Foo"/>
<xs:field xpath="@Bar"/>
</xs:key>
</xs:element>
</xs:schema>
FooListA.xml
==========
<?xml version="1.0" encoding="UTF-8"?>
<FooList xmlns="http://www.somecompany .com/FooList"
xmlns:xsi="http ://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocat ion="http://www.somecompany .com/FooList FooList.xsd">
<Foo Bar="1"/>
<Foo Bar="2"/>
</FooList>
FooListB.xml
==========
<?xml version="1.0" encoding="UTF-8"?>
<FooList xmlns="http://www.somecompany .com/FooList"
xmlns:xsi="http ://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocat ion="http://www.somecompany .com/FooList FooList.xsd">
<include xmlns="http://www.w3.org/2001/XInclude" href="FooListA. xml"
xpointer="FooLi st:FooList"/>
<Foo Bar="1"/>
<Foo Bar="2"/>
</FooList>
Essentially, I would like validation of FooListB.xml to fail, given
that it has 'Bar' attribute values which conflict with those in
FooListA.xml (assuming my include directive is correct...?). I'm
basically trying to "merge" document fragments into a master document,
and have the key constraint be useful.
Is this possible?
Cheers,
-David 0 1439 This thread has been closed and replies have been disabled. Please start a new discussion. Similar topics |
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