xercesc 2.1, schema support for 'unique', 'key'

[Martin LIENDL <Ma...@cern.ch>]

Hi,

I don't think I should send this to the general discussion list.
As there's no xerces-c user's - list, I have sent it to the developers list ...

Please have a look at the small schema catalog.xsd below, and the small instance
document catalog.xml.
I want to have all values of the 'name'-attributes of the 'file'-elements
contained in the 'catalog'-element to be unique . It seems, that xerces-c
(using the SAX2Count-example) does the uniqueness checking only on
children of the 'catalog'-element but not on all of its descendants,
as requested by the xpath selector './/file'.

Is this a bug, or a missinterpretation of the unique-concept on my side?

Thanks for any help!
   Martin

=== catalog.xsd ===

<?xml version = "1.0" encoding = "UTF-8"?>
<xs:schema  xmlns:xs = "http://www.w3.org/2001/XMLSchema">
<xs:element name="catalog">
   <xs:complexType>
     <xs:sequence>
       <xs:element ref="file" maxOccurs="unbounded"/>
     </xs:sequence>
   </xs:complexType>
   <xs:unique name="filename">
     <xs:selector xpath=".//file"/>
     <xs:field xpath="@name"/>
   </xs:unique>
</xs:element>
<xs:complexType name="fileType">
   <xs:sequence>
     <xs:element ref="file" minOccurs="0" maxOccurs="unbounded"/>
   </xs:sequence>
   <xs:attribute name="name" type="xs:string"/>
</xs:complexType>
<xs:element name="file" type="fileType"/>
</xs:schema>


=== catalog.xml ===

<?xml version = "1.0" encoding = "UTF-8"?>
<catalog  xmlns:xsi = "http://www.w3.org/2001/XMLSchema-instance"
	  xsi:noNamespaceSchemaLocation = "catalog.xsd">
<file name="A"/>
<file name="B">
   <file name="B"> <!-- xerces should complain about 'B'... -->
      <file name="C"/>
   </file>
</file>
</catalog> 




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