Re: Does xerces2-j DOMParser enforce key constraints?

[Eddie Robertsson]

Hi,
Thanks, Eddie.  I did what you suggested too, and retested again
after reading your message.  The parser still doesn't complain. 
I had a closer look and I didn't realize that you used a targetNamespace 
for your schema. Since the selector and field elements use XPath 
notation you will have to declare a prefix for your namespace that you 
can use in the XPath expression. The reason for this is that XPath 
doesn't support default namespaces. See below.

<?xml version="1.0" encoding="UTF-8"?>
<xs:schema targetNamespace="http://www.bts.com/pcsp";
xmlns="http://www.bts.com/pcsp"; 
xmlns:xs="http://www.w3.org/2001/XMLSchema";
elementFormDefault="qualified"> 

You have to add a namespace declaration with a prefix for your 
targetNamespace as well. For example:

xmlns:p="http://www.bts.com/pcsp";
<xs:element name="Contact">
    <xs:complexType>
      <xs:sequence>
        <xs:element name="Name" type="xs:string"/>
        <xs:element name="Title" type="xs:string"/>
        <xs:element name="Phone" type="xs:string"/>
        <xs:element name="Email" type="xs:string"/>
      </xs:sequence>
    </xs:complexType>
    <xs:key name="ContactKey">
        <xs:selector xpath="Contact"/>
        <xs:field xpath="Name"/>
    </xs:key> 

In the xpath attribute for selector and field you must use this new 
declared prefix on your elements:

<xs:key name="ContactKey">
   <xs:selector xpath="p:Contact"/>
   <xs:field xpath="p:Name"/>
</xs:key>
Cheers,
/Eddie

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