URGENT: Validation in DOM Parser doesn't work!

[Martijn Lindhout <ma...@hetnet.nl>]

Hello,

Please HELP me! This is urgent for a system in production!

I use the Xerces DOMParser to validate my documents. According to the sample
in the documentation I did the following to validate a doc using a schema:

  DOMParser parser = new DOMParser();
  FileInputStream instream = new FileInputStream("SayHello.xml");
  parser.setIncludeIgnorableWhitespace(false);
  parser.setFeature("http://xml.org/sax/features/validation", true);
  parser.parse(new InputSource(instream));
  Document document = parser.getDocument();

I executed the code with the folowing XML Doc:

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

<SayHelloA xmlns:xsi="http://www.w3.org/1999/XMLSchema-instance"
xsi:noNamespaceSchemaLocation="SayHello.xsd">
 <SayHello>
  <INPUT>Hello world! The XML interface works!</INPUT>
 </SayHello>
</SayHelloA>

and this schema:

<?xml version='1.0' encoding='UTF-8'?>
<schema>
 <element name='SayHelloA'>
  <type>
  <element ref='SayHello' minOccurs='1' maxOccurs='1'/>
  <attribute name='xmlns'/>
  </type>
 </element>

 <element name='SayHello'>
  <type>
   <element ref='INPUT' minOccurs='1' maxOccurs='1'/>
  </type>
 </element>
 <element name='INPUT' type='string'/>
</schema>

When I run the program, the following parser error occurs:

[Error 3,22]: Attribute "xmlns:xsi" must be declared for element type
"SayHelloA".

Why? According to the documentation, I have to use the xsi: prefix.