/**
    * 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.wss4j.policy.builders;
  
  import javax.xml.namespace.QName;
  
  import org.w3c.dom.Element;
  
  import org.apache.neethi.Assertion;
  import org.apache.neethi.AssertionBuilderFactory;
  import org.apache.neethi.Policy;
  import org.apache.neethi.builders.AssertionBuilder;
  import org.apache.wss4j.policy.SP11Constants;
  import org.apache.wss4j.policy.SP13Constants;
  import org.apache.wss4j.policy.SPConstants;
  import org.apache.wss4j.policy.SPUtils;
  import org.apache.wss4j.policy.model.BootstrapPolicy;
  
  public class BootstrapPolicyBuilder implements AssertionBuilder<Element> {
  
      public BootstrapPolicyBuilder() {
      }
  
      public Assertion build(Element element, AssertionBuilderFactory factory) throws IllegalArgumentException {
          final SPConstants.SPVersion spVersion = SPConstants.SPVersion.getSPVersion(element.getNamespaceURI());
          final Element nestedPolicyElement = SPUtils.getFirstPolicyChildElement(element);
          if (nestedPolicyElement == null) {
              throw new IllegalArgumentException("sp:BootstrapPolicy must have an inner wsp:Policy element");
          }
          final Policy nestedPolicy = factory.getPolicyEngine().getPolicy(nestedPolicyElement);
          return new BootstrapPolicy(spVersion, nestedPolicy);
      }
  
      public QName[] getKnownElements() {
          return new QName[]{SP13Constants.BOOTSTRAP_POLICY, SP11Constants.BOOTSTRAP_POLICY};
      }
  
  }