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   RE: [xml-dev] Valid reference to external namespace?

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You need to import the namespace (xsd:import) before you can refer to a type in that namespace.
Castor's validation of XML Schemas is far from thorough.
Michael Kay

From: Ezell, Joel M (Joel) [mailto:joele@avaya.com]
Sent: 15 December 2004 21:16
To: xml-dev@lists.xml.org
Subject: [xml-dev] Valid reference to external namespace?



Below, I have an example of an XSD file that is referencing a type defined in another schema, but I’m not positive that it’s doing it correctly.  Note that the CSTA namespace is defined as “csta”, and in the RegisterDevice type, I reference a type from that namespace: type=”csta:DeviceID”.  There is no explicit “include” statement.  Is this a legitimate way to reference that type?  Castor seems to think so, but I wanted to verify it anyway…



Joel Ezell

Avaya Inc.


<?xml version="1.0" encoding="UTF-8"?>

<xsd:schema targetNamespace="http://www.avaya.com/csta"



  elementFormDefault="qualified" attributeFormDefault="qualified">


  <xsd:include schemaLocation="ip-address.xsd"/>

  <xsd:include schemaLocation="login-info.xsd"/>


  <!-- RegisterDevice -->

  <xsd:element name="RegisterDevice">



        <xsd:element name="device"      type="csta:DeviceID"/>

        <xsd:element name="loginInfo"   type="acx:LoginInfo" minOccurs="0"/>

        <xsd:element name="localMediaInfo"   type="acx:MediaInfo" minOccurs="0"/>

        <xsd:element ref="csta:extensions" minOccurs="0"/>






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