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: 613608 $, $Date: 2008-01-20 18:59:10 +0200 (Sun, 20 Jan 2008) $
031     */
032    public enum RecordClass implements EnumConverter<Short>
033    {
034        /** Internet */
035        IN(1),
036    
037        /** CSNET class */
038        CS(2),
039    
040        /** CHAOS class */
041        CH(3),
042    
043        /** Hesiod [Dyer 87] */
044        HS(4),
045    
046        /** Special value used in dynamic update messages */
047        NONE(254),
048    
049        /** Any class */
050        ANY(255);
051    
052        private static ReverseEnumMap<Short, RecordClass> map = new ReverseEnumMap<Short, RecordClass>( RecordClass.class );
053    
054        private final short value;
055    
056    
057        private RecordClass( int value )
058        {
059            this.value = ( short ) value;
060        }
061    
062    
063        public Short convert()
064        {
065            return this.value;
066        }
067    
068    
069        /**
070         * Converts an ordinal value into a {@link RecordClass}.
071         *
072         * @param value
073         * @return The {@link RecordClass}.
074         */
075        public static RecordClass convert( short value )
076        {
077            return map.get( value );
078        }
079    }