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
024import org.apache.directory.server.dns.messages.ResourceRecord;
025import org.apache.directory.server.dns.store.DnsAttribute;
026import org.apache.mina.core.buffer.IoBuffer;
027
028
029/**
030 * 3.3.11. NS RDATA format
031 * 
032 *     +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+
033 *     /                   NSDNAME                     /
034 *     /                                               /
035 *     +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+
036 * 
037 * where:
038 * 
039 * NSDNAME         A <domain-name> which specifies a host which should be
040 *                 authoritative for the specified class and domain.
041 * 
042 * NS records cause both the usual additional section processing to locate
043 * a type A record, and, when used in a referral, a special search of the
044 * zone in which they reside for glue information.
045 * 
046 * The NS RR states that the named host should be expected to have a zone
047 * starting at owner name of the specified class.  Note that the class may
048 * not indicate the protocol family which should be used to communicate
049 * with the host, although it is typically a strong hint.  For example,
050 * hosts which are name servers for either Internet (IN) or Hesiod (HS)
051 * class information are normally queried using IN class protocols.
052 * 
053 * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a>
054 */
055public class NameServerRecordEncoder extends ResourceRecordEncoder
056{
057    protected void putResourceRecordData( IoBuffer byteBuffer, ResourceRecord record )
058    {
059        String domainName = record.get( DnsAttribute.DOMAIN_NAME );
060
061        putDomainName( byteBuffer, domainName );
062    }
063}