At 2006-09-14 23:52 +0200, Wolfgang Jeltsch wrote:
>I'm developing a schema in the XML Schema language and want to specify that
>certain elements of my document type have xml:id attributes.  However, the
>name attribute of the xsd:attribute is of type xsd:NCName but xml:id is not=
 a
>NCName.  How do I achieve what I want?

By importing a schema that declares this attribute.

This is what I am doing in my code list validation work:

===========8<------------
Vocabulary schema:

<xsd:schema xmlns:xsd="http://www.w3.org/2001/XMLSchema"
   xmlns="urn:oasis:names:tc:ubl:schema:CodeList-Constraints-0.7"
   targetNamespace="urn:oasis:names:tc:ubl:schema:CodeList-Constraints-0.7=
">

<!-- xml:id per http://www.w3.org/TR/2005/REC-xml-id-20050909/ -->
<xsd:import schemaLocation="xmlid.xsd"
             namespace="http://www.w3.org/XML/1998/namespace"/>

<xsd:annotation>
  <xsd:documentation xml:lang="en">
    A document model of the association of document contexts with the
    URIs of expressions of enumerations of coded values.
...
<!--a given code list with a unique identifier for reference in contexts-->
<xsd:element name="CodeList">
   <xsd:complexType>
     <xsd:attribute ref="xml:id"/>
     <xsd:attribute name="uri" type="xsd:anyURI"/>
   </xsd:complexType>
</xsd:element>


===========8<------------
xmlid.xsd schema:

<?xml version="1.0" encoding="ISO-8859-1"?>
<!--
   Verbatim from http://www.w3.org/TR/2005/REC-xml-id-20050909/ section D.2

   $Id: xmlid.xsd,v 1.1 2006/06/18 16:56:30 G. Ken Holman Exp $
-->
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema"
            targetNamespace="http://www.w3.org/XML/1998/namespace">

     <xs:attribute name="id" type="xs:ID"/>

</xs:schema>


===========8<------------

I hope this helps.

. . . . . . . . . . Ken

--
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