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 OpCode implements EnumConverter<Byte>
33 {
34 /** Standard query */
35 QUERY(0),
36
37 /** Inverse query */
38 IQUERY(1),
39
40 /** Server status request */
41 STATUS(2),
42
43 /** Zone transfer notification */
44 NOTIFY(4),
45
46 /** Dynamic update message */
47 UPDATE(5);
48
49 private static ReverseEnumMap<Byte, OpCode> map = new ReverseEnumMap<Byte, OpCode>( OpCode.class );
50
51 private final byte value;
52
53
54 private OpCode( int value )
55 {
56 this.value = ( byte ) value;
57 }
58
59
60 public Byte convert()
61 {
62 return this.value;
63 }
64
65
66 /**
67 * Converts an ordinal value into an {@link OpCode}.
68 *
69 * @param value
70 * @return The {@link OpCode}.
71 */
72 public static OpCode convert( byte value )
73 {
74 return map.get( value );
75 }
76 }