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 javax.xml.namespace.QName;
  
  import org.w3c.dom.Element;
  
  import org.apache.cxf.helpers.DOMUtils;
  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.SecurityContextToken;
  import org.apache.neethi.Assertion;
  import org.apache.neethi.AssertionBuilderFactory;
  import org.apache.neethi.builders.AssertionBuilder;
  
  
  public class SecurityContextTokenBuilder implements AssertionBuilder<Element> {
      
      public QName[] getKnownElements() {
          return new QName[]{SP11Constants.SECURITY_CONTEXT_TOKEN, SP12Constants.SECURITY_CONTEXT_TOKEN};
      }
      
      public Assertion build(Element element, AssertionBuilderFactory factory)
          throws IllegalArgumentException {
  
          SPConstants consts = SP11Constants.SP_NS.equals(element.getNamespaceURI())
              ? SP11Constants.INSTANCE : SP12Constants.INSTANCE;
  
          SecurityContextToken contextToken = new SecurityContextToken(consts);
  
          String includeAttr = DOMUtils.getAttribute(element, consts.getIncludeToken());
  
          if (includeAttr != null) {
              contextToken.setInclusion(consts.getInclusionFromAttributeValue(includeAttr));
          }
  
          element = PolicyConstants.findPolicyElement(element);
          if (element == null && consts != SP11Constants.INSTANCE) {
              throw new IllegalArgumentException(
                  "sp:SecurityContextToken/wsp:Policy must have a value"
              );
          }
  
          if (element != null) {
              if (DOMUtils.getFirstChildWithName(element, 
                      consts.getNamespace(),
                      SPConstants.REQUIRE_DERIVED_KEYS) != null) {
                  contextToken.setDerivedKeys(true);
              }
      
              if (DOMUtils.getFirstChildWithName(element, 
                      consts.getNamespace(),
                      SPConstants.REQUIRE_EXTERNAL_URI_REFERENCE) != null) {
                  contextToken.setRequireExternalUriRef(true);
              }
      
              if (DOMUtils.getFirstChildWithName(element,
                      consts.getNamespace(),
                      SPConstants.SC10_SECURITY_CONTEXT_TOKEN) != null) {
                  contextToken.setSc10SecurityContextToken(true);
              }
      
              if (DOMUtils.getFirstChildWithName(element,
                      consts.getNamespace(),
                      SPConstants.SC13_SECURITY_CONTEXT_TOKEN) != null) {
                  contextToken.setSc13SecurityContextToken(true);
              }
          }
  
          return contextToken;
      }
  
  }
  