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 }