001 /* 002 * Licensed to the Apache Software Foundation (ASF) under one 003 * or more contributor license agreements. See the NOTICE file 004 * distributed with this work for additional information 005 * regarding copyright ownership. The ASF licenses this file 006 * to you under the Apache License, Version 2.0 (the 007 * "License"); you may not use this file except in compliance 008 * with the License. You may obtain a copy of the License at 009 * 010 * http://www.apache.org/licenses/LICENSE-2.0 011 * 012 * Unless required by applicable law or agreed to in writing, 013 * software distributed under the License is distributed on an 014 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 015 * KIND, either express or implied. See the License for the 016 * specific language governing permissions and limitations 017 * under the License. 018 * 019 */ 020 021 package org.apache.directory.server.dns.messages; 022 023 024 import org.apache.directory.server.dns.util.EnumConverter; 025 import org.apache.directory.server.dns.util.ReverseEnumMap; 026 027 028 /** 029 * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a> 030 * @version $Rev: 547524 $, $Date: 2007-06-15 06:42:26 +0200 (Fri, 15 Jun 2007) $ 031 */ 032 public enum OpCode implements EnumConverter<Byte> 033 { 034 /** Standard query */ 035 QUERY(0), 036 037 /** Inverse query */ 038 IQUERY(1), 039 040 /** Server status request */ 041 STATUS(2), 042 043 /** Zone transfer notification */ 044 NOTIFY(4), 045 046 /** Dynamic update message */ 047 UPDATE(5); 048 049 private static ReverseEnumMap<Byte, OpCode> map = new ReverseEnumMap<Byte, OpCode>( OpCode.class ); 050 051 private final byte value; 052 053 054 private OpCode( int value ) 055 { 056 this.value = ( byte ) value; 057 } 058 059 060 public Byte convert() 061 { 062 return this.value; 063 } 064 065 066 /** 067 * Converts an ordinal value into an {@link OpCode}. 068 * 069 * @param value 070 * @return The {@link OpCode}. 071 */ 072 public static OpCode convert( byte value ) 073 { 074 return map.get( value ); 075 } 076 }