key/keyref does not validate with recursion
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                 Key: XERCESJ-1396
                 URL: https://issues.apache.org/jira/browse/XERCESJ-1396
             Project: Xerces2-J
          Issue Type: Bug
         Environment: Window, with Eclipse and the xerces plug-in is 
org.apache.xerces_2.9.0.v200805270400
            Reporter: Chu Minh Toan


Hi everyone,
Is it true that key/keyref does not validate with recursion? I have this 
question because that when I validate the following xml file, the validation of 
an element defined with recursion doesn't work. Following is xml and the 
corresponding xsd file. (I validate xml file with Eclipse and the xerces 
plug-in is org.apache.xerces_2.9.0.v200805270400). Thanks in advance!
Toan.

xsd file :

<?xml version="1.0" encoding="ISO-8859-1"?>
<xsd:schema xmlns:xsd="http://www.w3.org/2001/XMLSchema";>
 <xsd:element name="CompositeType" type="CompositeType" />
 <xsd:element name="Model" type="Model">
  <!-- CompositeTypeKey/KeyRef -->
  <xsd:key name="CompositeTypeKey">
   <xsd:selector
    xpath=".//CompositeType" />
   <xsd:field xpath="./typeName" />
  </xsd:key>
  <xsd:keyref name="CompositeTypeRef" refer="CompositeTypeKey">
   <xsd:selector
    xpath=".//Attribute/CompositeTypeReference" />
   <xsd:field xpath="." />
  </xsd:keyref>
 </xsd:element>

 <xsd:complexType name="CompositeType">
  <xsd:sequence>
   <xsd:element minOccurs="0" name="typeName"
    type="xsd:string" />
   <xsd:element maxOccurs="unbounded" minOccurs="0"
    name="Attribute" type="Attribute" />
  </xsd:sequence>
 </xsd:complexType>
 <xsd:complexType name="Attribute">
  <xsd:sequence>
   <xsd:element minOccurs="0" name="name" type="xsd:string" />
   <xsd:choice minOccurs="1">
    <xsd:element minOccurs="1" maxOccurs="1"
     name="CompositeType" type="CompositeType" />
    <xsd:element minOccurs="1" maxOccurs="1"
     name="CompositeTypeReference" type="xsd:string" />
   </xsd:choice>
  </xsd:sequence>
 </xsd:complexType>
 <xsd:complexType name="Model">
  <xsd:sequence>
   <xsd:element maxOccurs="unbounded" minOccurs="0"
    name="CompositeType" type="CompositeType" />
  </xsd:sequence>
 </xsd:complexType>
</xsd:schema>

xml file :

<?xml version="1.0" encoding="ISO-8859-1" standalone="no"?>
<Model xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance";
xsi:noNamespaceSchemaLocation="test.xsd" >
 <CompositeType>
  <typeName>Bozo</typeName>
 </CompositeType>
 <CompositeType>
  <typeName>MyData</typeName>
  <Attribute>
   <name>b</name>
   <CompositeTypeReference>Bozo</CompositeTypeReference>
  </Attribute>
  <Attribute>
   <name>d</name>
   <CompositeType>
    <typeName>CustomData</typeName>
   </CompositeType>
  </Attribute>
  <Attribute>
   <name>n</name>
   <CompositeType>
    <typeName>NewData</typeName>
    <Attribute>
     <name>m</name>
     <CompositeTypeReference>My</CompositeTypeReference>
    </Attribute>
    <Attribute>
     <name>c</name>
     <CompositeTypeReference>Custom</CompositeTypeReference>
    </Attribute>
   </CompositeType>
  </Attribute>
 </CompositeType>
</Model>

Notice that when validate if the validation of recursion works, there will be 
two errors at :
     <CompositeTypeReference>My</CompositeTypeReference>
     <CompositeTypeReference>Custom</CompositeTypeReference>
because the right references are :
     <CompositeTypeReference>MyData</CompositeTypeReference>
     <CompositeTypeReference>CustomData</CompositeTypeReference>

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