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 021package org.apache.directory.server.dns.messages; 022 023 024import org.apache.directory.server.dns.util.EnumConverter; 025import org.apache.directory.server.dns.util.ReverseEnumMap; 026 027 028/** 029 * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a> 030 */ 031public enum OpCode implements EnumConverter<Byte> 032{ 033 /** Standard query */ 034 QUERY(0), 035 036 /** Inverse query */ 037 IQUERY(1), 038 039 /** Server status request */ 040 STATUS(2), 041 042 /** Zone transfer notification */ 043 NOTIFY(4), 044 045 /** Dynamic update message */ 046 UPDATE(5); 047 048 private static ReverseEnumMap<Byte, OpCode> map = new ReverseEnumMap<>( OpCode.class ); 049 050 private final byte value; 051 052 053 OpCode( int value ) 054 { 055 this.value = ( byte ) value; 056 } 057 058 059 public Byte convert() 060 { 061 return this.value; 062 } 063 064 065 /** 066 * Converts an ordinal value into an {@link OpCode}. 067 * 068 * @param value 069 * @return The {@link OpCode}. 070 */ 071 public static OpCode convert( byte value ) 072 { 073 return map.get( value ); 074 } 075}