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Hi Jasbir,

Following is the right XML file::

<?xml version="1.0" ?>
<Request xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:noNamespaceSchemaLocation="jasbir.xsd">
	 <Transaction xsi:type="_Transaction_Login">
    	 <user_id>test</user_id>
     	 <password>xxx</password>
    </Transaction>
</Request>

Also, as u dont have DTD, so set the DTD feature to false , and true for Schema
xr.setFeature( "http://xml.org/sax/features/validation",false);
xr.setFeature( "http://xml.org/sax/features/namespaces",true);
xr.setFeature( "http://apache.org/xml/features/validation/schema",true);

Regds,
Anoop Singh



-----Original Message-----
From:	jasbir.matharu@hfcbank.co.uk [mailto:jasbir.matharu@hfcbank.co.uk]
Sent:	Tue 12/17/2002 4:58 PM
To:	xerces-j-dev@xml.apache.org
Cc:	
Subject:	Schema validation problem with xsi:type

I have problems when attempting to use the xsi:type parameter in a schema
with Xerces. Here is a sample schema.

<?xml version="1.0" encoding="UTF-8"?>
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema">
  <xs:complexType name="_Transaction" abstract="true">
    <xs:sequence>
      <xs:element name="user_id"/>
    </xs:sequence>
  </xs:complexType>
  <xs:complexType name="_Transaction_Login">
    <xs:complexContent>
      <xs:extension base="_Transaction">
        <xs:sequence>
           <xs:element name="password"/>
        </xs:sequence>
      </xs:extension>
    </xs:complexContent>
  </xs:complexType>
  <xs:complexType name="_Transaction_Submit">
    <xs:complexContent>
      <xs:extension base="_Transaction">
        <xs:sequence>
           <xs:element name="application_number">
           </xs:element>
        </xs:sequence>
      </xs:extension>
    </xs:complexContent>
  </xs:complexType>

  <xs:element name="Request">
  <xs:complexType name="">
    <xs:sequence>
      <xs:element name="Transaction" type="_Transaction"/>
    </xs:sequence>
  </xs:complexType>
  </xs:element>

</xs:schema>

If I validate it with the following XML in XML Spy then it works fine.

<?xml version="1.0" encoding="UTF-8"?>
<Request xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
  <Transaction xsi:type="_Transaction_Login">
    <user_id>test</user_id>
    <password>xxx</password>
  </Transaction>
</Request>

Under Xerces it reports the following  error

Parsing error: Document root element "Request", must match DOCTYPE root
"null".
Parsing error: Document is invalid: no grammar found.

The test code I'm using is

               this._parser = new SAXParser();
               this._parser.setFeature
("http://xml.org/sax/features/validation",true);
                         this._parser.setProperty
("http://apache.org/xml/properties/schema/external-noNamespaceSchemaLocation",
                    "/test/test3.xsd");
               this._parser.setErrorHandler(this.new B2BSaxHandler());

               String xml = "<Request xmlns:xsi
=\"http://www.w3.org/2001/XMLSchema-instance\">"+
                    "<Transaction xsi:type=\"_Transaction_Login\">"+
                    "<user_id>test</user_id>"+
                    "<password>xxx</password>"+
                    "</Transaction>"+
                    "</Request>";


               System.out.println(xml);
               StringReader data = new StringReader(xml);
               _parser.parse(new org.xml.sax.InputSource(data));
               _parser.reset();

Any help is appreciated!

Jasbir