OpenSAML user discussion

[Jay Packard <>]

SHORT VERSION OF QUESTION: How can I convert from a java.lang.Object to 
an object that can be unmarshalled and how can I marshall a ResponseType 
object?

LONG VERSION OF QUESTION: I could use a little guidance on my GUMS Authz 
XACML service implementation.

I've got the xacml_authz_port_type.wsdl file from the xacml-alpha08 
project, which has the following section:  
 /    <wsdl:portType name="XACMLAuthorizationPortType">
                 <wsdl:operation name="Authorize">
                         <wsdl:input
 message="tns:XACMLAuthzDecisionQuery" />
                         <wsdl:output message="tns:XACMLAuthzResponse" />
                         <wsdl:fault name="XACMLFault"
                                 message="tns:XACMLAuthorizationFault">
                         </wsdl:fault>
                 </wsdl:operation>
         </wsdl:portType>/

I created Java stubs from the WSDL using wsdl2java, one of which is 
src/org/globus/www/security/XACMLAuthorization/XACMLAuthorizationPortType.java 
and has the following content:

 /package org.globus.www.security.XACMLAuthorization;

 public interface XACMLAuthorizationPortType extends java.rmi.Remote {
     public protocol._0._2.SAML.tc.names.oasis.ResponseType
 authorize(java.lang.Object xacmlAuthzDecisionQueryObj) throws
 java.rmi.RemoteException,
 org.globus.www.security.XACMLAuthorization.XACMLAuthorizationFault;
 }/

I've written the implementation of this but I don't know how to convert 
from xacmlAuthzDecisionQueryObj to an object that can be unmarshalled or 
how to marshall a ResponseType object to return a 
protocol._0._2.SAML.tc.names.oasis.ResponseType object.  Here is what I 
have so far:

           /  import org.opensaml.xacml.ctx.ResponseType;
             import 
org.opensaml.xacml.profile.saml.XACMLAuthzDecisionQueryType;
             import 
org.opensaml.xacml.profile.saml.XACMLAuthzDecisionStatementType;
             ...
/

 /        public protocol._0._2.SAML.tc.names.oasis.ResponseType
 authorize(java.lang.Object xacmlAuthzDecisionQueryObj) throws
 java.rmi.RemoteException,
 org.opensciencegrid.authz.xacml.stubs.XACMLAuthorizationFault {
                 try {
                         Unmarshaller queryUnmarshaller =
 
unMarshallerFactory.getUnmarshaller(XACMLAuthzDecisionQueryType.DEFAULT_ELEMENT_NAME_XACML20);
                         XACMLAuthzDecisionQueryType query =
 (XACMLAuthzDecisionQueryType)queryUnmarshaller.unmarshall(/*TODO:
 convert xacmlAuthzDecisionQueryObj to Element object???*/);
                 } catch(UnmarshallingException e) {
                         log.debug("Error unmarshalling query: ",e);
                 }

                 XACMLAuthzDecisionStatementType decision =
 mapService.mapCredentials(query);
                 ResponseType response = decision.getResponse();
                 try {
                         Marshaller responseMarshaller =
 marshallerFactory.getMarshaller(ResponseType.TYPE_NAME_XACML20);
                         Document reponseDoc = db.newDocument();
                         responseMarshaller.marshall(response,
 responseDoc);
                         /*TODO: convert responseDoc to type
 protocol._0._2.SAML.tc.names.oasis.ResponseType to be returned*/
                 } catch (MarshallingException e) {
                         log.debug("Error marshalling query: ",e);
                 }
         }
 /

A few variable declarations are not shown.