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 */
31 public enum OpCode implements EnumConverter<Byte>
32 {
33 /** Standard query */
34 QUERY(0),
35
36 /** Inverse query */
37 IQUERY(1),
38
39 /** Server status request */
40 STATUS(2),
41
42 /** Zone transfer notification */
43 NOTIFY(4),
44
45 /** Dynamic update message */
46 UPDATE(5);
47
48 private static ReverseEnumMap<Byte, OpCode> map = new ReverseEnumMap<>( OpCode.class );
49
50 private final byte value;
51
52
53 OpCode( int value )
54 {
55 this.value = ( byte ) value;
56 }
57
58
59 public Byte convert()
60 {
61 return this.value;
62 }
63
64
65 /**
66 * Converts an ordinal value into an {@link OpCode}.
67 *
68 * @param value
69 * @return The {@link OpCode}.
70 */
71 public static OpCode convert( byte value )
72 {
73 return map.get( value );
74 }
75 }