Cannot create a Schema object for an XSD file with the targetNamespace attribute set on an element

Hi,

I'm trying to write a schema using the 1.1 schema language and I need
to be able to set the targetNamespace attribute on some of the
elements. When I try and create a Validator to validate XML against
the schema however, I get an instance of XMLSchema11Factory but when I
pass the XSD file to the factory's newSchema() method I always get the
following exception:

s4s-att-not-allowed: Attribute 'targetNamespace" cannot appear in
element 'element'.

I've trimmed the XSD down to a minimal test case that reproduces the problem:

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

<xs:schema targetNamespace="http://www.foo.com"
xmlns="http://www.foo.com" xmlns:other="http://www.bar.com"
xmlns:xs="http://www.w3.org/2001/XMLSchema">
  <xs:element targetNamespace="http://www.bar.com">
    <xs:simpleType name="ans">
      <xs:restriction base="xs:string"/>
    </xs:simpleType>
  </xs:element>
</xs:schema>

And here is the code I'm using to try and create the validator

System.setProperty("javax.xml.validation.SchemaFactory:http://www.w3.org/XML/XMLSchema/v1.1",
"org.apache.xerces.jaxp.validation.XMLSchema11Factory");
      SchemaFactory factory =
          SchemaFactory.newInstance("http://www.w3.org/XML/XMLSchema/v1.1");
      Schema schema =
          factory.newSchema(new
StreamSource(ClassLoader.getSystemResourceAsStream("test.xsd")));
      xmlValidator = schema.newValidator();

Does anyone have any idea why this isn't working?

Kind regards,

Julian