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   /*
    * Copyright 2012 The Netty Project
    *
    * The Netty Project 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.jboss.netty.channel.socket.nio;
  
  import org.jboss.netty.channel.socket.InternetProtocolFamily;
  
  import java.net.ProtocolFamily;
  import java.net.StandardProtocolFamily;
  
  
  /**
   * Helper class which convert the {@link InternetProtocolFamily}.
   *
   *
   */
  final class ProtocolFamilyConverter {
  
      private ProtocolFamilyConverter() {
          // Utility class
      }
  
      /**
       * Convert the {@link InternetProtocolFamily}. This MUST only be called on jdk version >= 7.
       */
      public static ProtocolFamily convert(InternetProtocolFamily family) {
          switch (family) {
          case IPv4:
              return StandardProtocolFamily.INET;
  
          case IPv6:
              return StandardProtocolFamily.INET6;
          default:
              throw new IllegalArgumentException();
          }
      }
  }