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.namespace.QName;
  
  import org.w3c.dom.Element;
  
  import org.apache.cxf.helpers.DOMUtils;
  import org.apache.cxf.ws.policy.PolicyBuilder;
  import org.apache.cxf.ws.security.policy.SP11Constants;
  import org.apache.cxf.ws.security.policy.SPConstants;
  import org.apache.cxf.ws.security.policy.SPConstants.SupportTokenType;
  import org.apache.cxf.ws.security.policy.model.AlgorithmSuite;
  import org.apache.cxf.ws.security.policy.model.SignedEncryptedElements;
  import org.apache.cxf.ws.security.policy.model.SignedEncryptedParts;
  import org.apache.cxf.ws.security.policy.model.SupportingToken;
  import org.apache.cxf.ws.security.policy.model.Token;
  import org.apache.neethi.Assertion;
  import org.apache.neethi.AssertionBuilderFactory;
  import org.apache.neethi.Policy;
  import org.apache.neethi.builders.AssertionBuilder;
  
  
  public class SupportingTokensBuilder implements AssertionBuilder<Element> {
      
      PolicyBuilder builder;
      public SupportingTokensBuilder(PolicyBuilder b) {
          builder = b;
      }
      public QName[] getKnownElements() {
          return new QName[]{SP11Constants.SUPPORTING_TOKENS, 
                             SP11Constants.SIGNED_SUPPORTING_TOKENS,
                             SP11Constants.ENDORSING_SUPPORTING_TOKENS,
                             SP11Constants.SIGNED_ENDORSING_SUPPORTING_TOKENS};
      }
      
      public Assertion build(Element element, AssertionBuilderFactory factory)
          throws IllegalArgumentException {
          QName name = DOMUtils.getElementQName(element);
          SupportingToken supportingToken = null;
  
          if (SP11Constants.SUPPORTING_TOKENS.equals(name)) {
              supportingToken = new SupportingToken(SupportTokenType.SUPPORTING_TOKEN_SUPPORTING,
                                                    SP11Constants.INSTANCE,
                                                    builder);
          } else if (SP11Constants.SIGNED_SUPPORTING_TOKENS.equals(name)) {
              supportingToken = new SupportingToken(SupportTokenType.SUPPORTING_TOKEN_SIGNED, 
                                                    SP11Constants.INSTANCE,
                                                    builder);
          } else if (SP11Constants.ENDORSING_SUPPORTING_TOKENS.equals(name)) {
              supportingToken = new SupportingToken(SupportTokenType.SUPPORTING_TOKEN_ENDORSING, 
                                                    SP11Constants.INSTANCE,
                                                    builder);
          } else if (SP11Constants.SIGNED_ENDORSING_SUPPORTING_TOKENS.equals(name)) {
              supportingToken = new SupportingToken(SupportTokenType.SUPPORTING_TOKEN_SIGNED_ENDORSING,
                                                    SP11Constants.INSTANCE,
                                                    builder);
          }
  
          Policy policy = builder.getPolicy(DOMUtils.getFirstElement(element));
          policy = policy.normalize(builder.getPolicyRegistry(), false);
  
          for (Iterator<List<Assertion>> iterator = policy.getAlternatives(); iterator.hasNext();) {
              processAlternative(iterator.next(), supportingToken);
              /*
               * for the moment we will say there should be only one alternative
               */
              break;
          }
  
          return supportingToken;
      }
  
  
      private void processAlternative(List<Assertion> assertions, SupportingToken supportingToken) {
  
          for (Assertion primitive : assertions) {
              QName qname = primitive.getName();
              String localName = qname.getLocalPart();
              
              if (SPConstants.ALGO_SUITE.equals(localName)) {
                  supportingToken.setAlgorithmSuite((AlgorithmSuite)primitive);
  
              } else if (SPConstants.SIGNED_PARTS.equals(localName)) {
                  supportingToken.setSignedParts((SignedEncryptedParts)primitive);
  
              } else if (SPConstants.SIGNED_ELEMENTS.equals(localName)) {
                  supportingToken.setSignedElements((SignedEncryptedElements)primitive);
  
              } else if (SPConstants.ENCRYPTED_PARTS.equals(localName)) {
                  supportingToken.setEncryptedParts((SignedEncryptedParts)primitive);
  
              } else if (SPConstants.ENCRYPTED_ELEMENTS.equals(localName)) {
                  supportingToken.setEncryptedElements((SignedEncryptedElements)primitive);
  
              } else if (primitive instanceof Token) {
                  supportingToken.addToken((Token)primitive);
                  ((Token)primitive).setSupportingToken(supportingToken);
              }
          }
      }
  }
  