code: /**
   * Licensed to the Apache Software Foundation (ASF) under one
   * or more contributor license agreements. See the NOTICE file
   * distributed with this work for additional information
   * regarding copyright ownership. The ASF licenses this file
   * to you under the Apache License, Version 2.0 (the
   * "License"); you may not use this file except in compliance
   * with the License. You may obtain a copy of the License at
   *
   * http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing,
   * software distributed under the License is distributed on an
   * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
   * KIND, either express or implied. See the License for the
   * specific language governing permissions and limitations
   * under the License.
   */
  package org.apache.cxf.ws.security.policy.builders;
  
  import java.util.Iterator;
  import java.util.List;
  
  import javax.xml.bind.JAXBException;
  import javax.xml.namespace.QName;
  
  import org.w3c.dom.Element;
  
  import org.apache.cxf.helpers.DOMUtils;
  import org.apache.cxf.ws.addressing.EndpointReferenceType;
  import org.apache.cxf.ws.addressing.VersionTransformer;
  import org.apache.cxf.ws.policy.PolicyBuilder;
  import org.apache.cxf.ws.policy.PolicyConstants;
  import org.apache.cxf.ws.security.policy.SP11Constants;
  import org.apache.cxf.ws.security.policy.SP12Constants;
  import org.apache.cxf.ws.security.policy.SPConstants;
  import org.apache.cxf.ws.security.policy.model.IssuedToken;
  import org.apache.neethi.Assertion;
  import org.apache.neethi.AssertionBuilderFactory;
  import org.apache.neethi.Policy;
  import org.apache.neethi.builders.AssertionBuilder;
  
  
  public class IssuedTokenBuilder implements AssertionBuilder<Element> {
      
      PolicyBuilder builder;
      public IssuedTokenBuilder(PolicyBuilder b) {
          builder = b;
      }
      public QName[] getKnownElements() {
          return new QName[]{SP11Constants.ISSUED_TOKEN, SP12Constants.ISSUED_TOKEN};
      }
  
      public Assertion build(Element element, AssertionBuilderFactory factory)
          throws IllegalArgumentException {
          
          SPConstants consts = SP11Constants.SP_NS.equals(element.getNamespaceURI())
              ? SP11Constants.INSTANCE : SP12Constants.INSTANCE;
      
  
          IssuedToken issuedToken = new IssuedToken(consts);
          issuedToken.setOptional(PolicyConstants.isOptional(element));
          issuedToken.setIgnorable(PolicyConstants.isIgnorable(element));
  
          String includeAttr = DOMUtils.getAttribute(element, consts.getIncludeToken());
          if (includeAttr != null) {
              issuedToken.setInclusion(consts.getInclusionFromAttributeValue(includeAttr));
          }
          
          Element child = DOMUtils.getFirstElement(element);
          boolean foundPolicy = false;
          boolean foundRST = false;
          while (child != null) {
              String ln = child.getLocalName();
              if (SPConstants.ISSUER.equals(ln)) {
                  try {
                      EndpointReferenceType epr = VersionTransformer.parseEndpointReference(child);
                      issuedToken.setIssuerEpr(epr);
                  } catch (JAXBException e) {
                      throw new IllegalArgumentException(e);
                  }
              } else if (SPConstants.REQUEST_SECURITY_TOKEN_TEMPLATE.equals(ln)) {
                  foundRST = true;
                  issuedToken.setRstTemplate(child);
              } else if (org.apache.neethi.Constants.ELEM_POLICY.equals(ln)) {
                  foundPolicy = true;
                  Policy policy = builder.getPolicy(child);
                  policy = policy.normalize(builder.getPolicyRegistry(), false);
  
                  for (Iterator<List<Assertion>> iterator = policy.getAlternatives(); iterator.hasNext();) {
                      processAlternative(iterator.next(), issuedToken);
                      break; // since there should be only one alternative ..
                  }                
              } else if (SPConstants.ISSUER_NAME.equals(ln)) {
                  String issuerName = child.getNodeValue();
                  issuedToken.setIssuerName(issuerName);
              }
              
              child = DOMUtils.getNextElement(child);
          }
          
          if (!foundPolicy && consts != SP11Constants.INSTANCE) {
              throw new IllegalArgumentException(
                  "sp:IssuedToken/wsp:Policy must have a value"
              );
          }
          if (!foundRST) {
              throw new IllegalArgumentException(
                  "sp:IssuedToken/sp:RequestSecurityTokenTemplate must have a value"
              );
          }
          
          return issuedToken;
      }
  
  
      private void processAlternative(List<Assertion> assertions, IssuedToken parent) {
          QName name;
  
          for (Assertion assertion : assertions) {
              name = assertion.getName();
  
              if (SPConstants.REQUIRE_DERIVED_KEYS.equals(name.getLocalPart())) {
                  parent.setDerivedKeys(true);
              } else if (SPConstants.REQUIRE_EXTERNAL_REFERENCE.equals(name.getLocalPart())) {
                  parent.setRequireExternalReference(true);
              } else if (SPConstants.REQUIRE_INTERNAL_REFERENCE.equals(name.getLocalPart())) {
                  parent.setRequireInternalReference(true);
              }
          }
  
      }
  
  }
  