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.io.encoder;
022
023
024/**
025 * 5.2 NXT RDATA Format
026 * 
027 *    The RDATA for an NXT RR consists simply of a domain name followed by
028 *    a bit map.
029 * 
030 *    The type number for the NXT RR is 30.
031 * 
032 *                            1 1 1 1 1 1 1 1 1 1 2 2 2 2 2 2 2 2 2 2 3 3
033 *        0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
034 *       +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
035 *       |         next domain name                                      /
036 *       +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
037 *       |                    type bit map                               /
038 *       +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
039 * 
040 *    The NXT RR type bit map is one bit per RR type present for the owner
041 *    name similar to the WKS socket bit map.  The first bit represents RR
042 *    type zero (an illegal type which should not be present.) A one bit
043 *    indicates that at least one RR of that type is present for the owner
044 *    name.  A zero indicates that no such RR is present.  All bits not
045 *    specified because they are beyond the end of the bit map are assumed
046 *    to be zero.  Note that bit 30, for NXT, will always be on so the
047 *    minimum bit map length is actually four octets.  The NXT bit map
048 *    should be printed as a list of RR type mnemonics or decimal numbers
049 *    similar to the WKS RR.
050 * 
051 *    The domain name may be compressed with standard DNS name compression
052 *    when being transmitted over the network.  The size of the bit map can
053 *    be inferred from the RDLENGTH and the length of the next domain name.
054 * 
055 * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a>
056 */
057public class NextNameRecordEncoder
058{
059}