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.io.encoder;
022    
023    
024    import org.apache.directory.server.dns.messages.ResourceRecord;
025    import org.apache.directory.server.dns.store.DnsAttribute;
026    import org.apache.mina.core.buffer.IoBuffer;
027    
028    
029    /**
030     * 3.3.1. CNAME RDATA format
031     * 
032     *     +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+
033     *     /                     CNAME                     /
034     *     /                                               /
035     *     +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+
036     * 
037     * where:
038     * 
039     * CNAME           A <domain-name> which specifies the canonical or primary
040     *                 name for the owner.  The owner name is an alias.
041     * 
042     * CNAME RRs cause no additional section processing, but name servers may
043     * choose to restart the query at the canonical name in certain cases.  See
044     * the description of name server logic in [RFC-1034] for details.
045     * 
046     * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a>
047     * @version $Rev: 725712 $, $Date: 2008-12-11 16:32:04 +0100 (Thu, 11 Dec 2008) $
048     */
049    public class CanonicalNameRecordEncoder extends ResourceRecordEncoder
050    {
051        protected void putResourceRecordData( IoBuffer byteBuffer, ResourceRecord record )
052        {
053            String domainName = record.get( DnsAttribute.DOMAIN_NAME );
054    
055            putDomainName( byteBuffer, domainName );
056        }
057    }