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Topic

Subject: Unable to use xsi:type attribute
Author: Adam Ringel
Date: 19 Dec 2007 10:17 AM

I am trying to use the xsi:type attribute but I get the following error:
file:///c:/test/stylus/test.xsd:17,54: Schema Representation Constraint: Namespace 'http://www.w3.org/2001/XMLSchema-instance' is referenced without <import>
I thought http://www.w3.org/2001/XMLSchema-instance is known without needing to import?

<?xml version="1.0"?>
<request xmlns="http://www.test.com/test"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://www.test.com/test test.xsd">
<command xsi:type="list">
</command>
</request>

top

Subject: Unable to use xsi:type attribute
Author: Tony Lavinio
Date: 19 Dec 2007 07:59 PM

I think that's not your problem.

It's hard to tell without seeing test.xsd, but I don't see that same
error. What I do see is an error telling me that "list" is not a valid
value for xsi:type, which is probably true, since "list" is not a valid
XML Schema type.

This works: (notice the declaration of xsd):

<?xml version="1.0"?>
<request xmlns="http://www.test.com/test" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xsi:schemaLocation="http://www.test.com/test file:///c:/temp/test.xsd">
<command xsi:type="xsd:string">
</command>
</request>

That's using this as test.xsd:

<?xml version="1.0"?>
<xsd:schema xmlns:xsd="http://www.w3.org/2001/XMLSchema" targetNamespace="http://www.test.com/test" xmlns="http://www.test.com/test" elementFormDefault="qualified">
<xsd:element name="request">
<xsd:complexType>
<xsd:sequence>
<xsd:element name="command"/>
</xsd:sequence>
</xsd:complexType>
</xsd:element>
</xsd:schema>

When I use your example, I get this error

file:///c:/temp/test.xml:3,27: Unresolved type 'list' found in xsi:type handling

using the built-in validator (which is Xerces C++), and the much nicer

Validation error on line 3 column 27 of file:/c:/temp/test.xml:
Unknown type {list} specified in xsi:type attribute (See
http://www.w3.org/TR/xmlschema-1/#cvc-elt clause 4.2) Validation error on line 3 column 27 of file:/c:/temp/test.xml:
Invalid QName {list} specified in xsi:type attribute: Unknown type {list} specified in
xsi:type attribute (See http://www.w3.org/TR/xmlschema-1/#cvc-elt clause 4.1)

when validating using Saxon 9.0.0.2.

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