problem with RDF

[Mithun Sheshagiri]

Hi all,
        I am trying to enclose RDF in SOAP body of my response messages.
The schema I am using for the RDF is as follows:
<xsd:schema targetNamespace="http://stuff/IProvider.xsd";
                xmlns:xsd="http://www.w3.org/2001/XMLSchema";
                xmlns:SOAP-ENC="http://schemas.xmlsoap.org/soap/encoding/";
                xmlns:effects="http://effects.com/";>
      <xsd:element name="RDF"
targetNamespace="http://www.w3.org/1999/02/22-rdf-syntax-ns#";>
        <xsd:complexType>
          <xsd:choice>
            <xsd:element name="ItemList" 
targetNamespace="http://effects.com/";
                         form="qualified">
              <xsd:complexType>
                <xsd:sequence>
                  <xsd:element name="member" minOccurs="0" 
maxOccurs="unbounded"
                               targetNamespace="http://effects.com/";
                               form="qualified">
                    <xsd:complexType>
                      <xsd:attribute ref="rdf:resource" type="xsd:string"
                                     form="qualified"/>
                    </xsd:complexType>
                  </xsd:element>
                </xsd:sequence>
                <xsd:attribute ref="rdf:ID" type="xsd:string" 
form="qualified"/>
              </xsd:complexType>
            </xsd:element>
            <xsd:element name="keyword" type="xsd:string" nillable="false"
                         targetNamespace="http://effects.com/"; 
form="qualified"/>
          </xsd:choice>
        </xsd:complexType>
      </xsd:element>
    </xsd:schema>

 <message name="ItemLookUp0Request">
    <part name="req" element="rdf:RDF"/>
  </message>
  <message name="ItemLookUp0Response">
    <part name="resp" element="rdf:RDF"/>
  </message>
The service accepts a keyword and outputs ItemList. The SOAP response 
looks like this:

<?xml version="1.0" encoding="UTF-8"?>
<soapenv:Envelope 
xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/"; 
xmlns:xsd="http://www.w3.org/2001/XMLSchema"; 
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance";>
 <soapenv:Body>
  <RDF xmlns="http://www.w3.org/1999/02/22-rdf-syntax-ns#";>
   <ns2:ItemList ns1:ID="instanceOfItemList" 
xmlns:ns1="http://www.w3.org/1999/02/22-rdf-syntax-ns#"; 
xmlns:ns2="http://effects.com/";>
    <ns2:member ns1:resource="http://thisone"/>
    <ns2:member ns1:resource="http://thistwo"/>
   </ns2:ItemList>
   <ns3:keyword xsi:nil="true" xmlns:ns3="http://effects.com/"/>
  </RDF>
 </soapenv:Body>
</soapenv:Envelope>

The piece of xml between the Body tag is almost perfect RDF except for 
two things:

1. The keyword element is an additional overhead.
2. Even if I accept the overhead, the xsi name space is declared in the 
Envelope section and I want it as an attribute in the RDF element.

So,
1. How can I eliminate the keyword from my message?
2. Is there a way to include arbitrary namespaces?
mithun
http://www.cs.umbc.edu/~mits1