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.common.util.StringUtils;
  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.KeyValueToken;
  import org.apache.neethi.Assertion;
  import org.apache.neethi.AssertionBuilderFactory;
  import org.apache.neethi.builders.AssertionBuilder;
  
  public class KeyValueTokenBuilder implements AssertionBuilder<Element> {
      private static final String MS_NS = "http://schemas.microsoft.com/ws/2005/07/securitypolicy";
  
      public KeyValueTokenBuilder() {
      }
      
      public Assertion build(Element element, AssertionBuilderFactory factory) {
          
          SPConstants consts = MS_NS.equals(element.getNamespaceURI())
              ? SP11Constants.INSTANCE : SP12Constants.INSTANCE;
  
          KeyValueToken token = new KeyValueToken(consts);
          token.setOptional(PolicyConstants.isOptional(element));
          token.setIgnorable(PolicyConstants.isIgnorable(element));
          
          String attribute = element.getAttributeNS(element.getNamespaceURI(), SPConstants.ATTR_INCLUDE_TOKEN);
          if (StringUtils.isEmpty(attribute)) {
              attribute = element.getAttributeNS(consts.getNamespace(), SPConstants.ATTR_INCLUDE_TOKEN);
          }
          if (StringUtils.isEmpty(attribute)) {
              attribute = element.getAttributeNS(SP11Constants.INSTANCE.getNamespace(),
                                                 SPConstants.ATTR_INCLUDE_TOKEN);
          }
          if (!StringUtils.isEmpty(attribute)) {
              token.setInclusion(consts.getInclusionFromAttributeValue(attribute));
          }
  
          Element polEl = PolicyConstants.findPolicyElement(element);
          if (polEl == null) {
              throw new IllegalArgumentException(
                  "sp:KeyValueToken/wsp:Policy must have a value"
              );
          }
          Element child = DOMUtils.getFirstElement(polEl);
          if (child != null) {
              QName qname = new QName(child.getNamespaceURI(), child.getLocalName());
              if ("RsaKeyValue".equals(qname.getLocalPart())) {
                  token.setForceRsaKeyValue(true);
              }
          }
          return token;
      }
  
      public QName[] getKnownElements() {
          return new QName[]{SP12Constants.KEYVALUE_TOKEN, new QName(MS_NS, "RsaToken")};
      }
  
  }
  