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1   /*
2    *  Licensed to the Apache Software Foundation (ASF) under one
3    *  or more contributor license agreements.  See the NOTICE file
4    *  distributed with this work for additional information
5    *  regarding copyright ownership.  The ASF licenses this file
6    *  to you under the Apache License, Version 2.0 (the
7    *  "License"); you may not use this file except in compliance
8    *  with the License.  You may obtain a copy of the License at
9    *  
10   *    http://www.apache.org/licenses/LICENSE-2.0
11   *  
12   *  Unless required by applicable law or agreed to in writing,
13   *  software distributed under the License is distributed on an
14   *  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
15   *  KIND, either express or implied.  See the License for the
16   *  specific language governing permissions and limitations
17   *  under the License. 
18   *  
19   */
20  
21  package org.apache.directory.server.dns.messages;
22  
23  
24  import org.apache.directory.server.dns.util.EnumConverter;
25  import org.apache.directory.server.dns.util.ReverseEnumMap;
26  
27  
28  /**
29   * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a>
30   * @version $Rev: 547524 $, $Date: 2007-06-15 06:42:26 +0200 (Fr, 15 Jun 2007) $
31   */
32  public enum MessageType implements EnumConverter<Byte>
33  {
34      /** A query message. */
35      QUERY(0),
36  
37      /** A response message. */
38      RESPONSE(1);
39  
40      private static ReverseEnumMap<Byte, MessageType> map = new ReverseEnumMap<Byte, MessageType>( MessageType.class );
41  
42      private final byte value;
43  
44  
45      private MessageType( int value )
46      {
47          this.value = ( byte ) value;
48      }
49  
50  
51      public Byte convert()
52      {
53          return this.value;
54      }
55  
56  
57      /**
58       * Converts an ordinal value into a {@link MessageType}.
59       *
60       * @param value
61       * @return The {@link MessageType}.
62       */
63      public static MessageType convert( byte value )
64      {
65          return map.get( value );
66      }
67  }