trunk/protocol-dns/src/main/java/org/apache/directory/server/dns/io/encoder/NameServerRecordEncoder.java

/*
 *  Licensed to the Apache Software Foundation (ASF) under one
 *  or more contributor license agreements.  See the NOTICE file
 *  distributed with this work for additional information
 *  regarding copyright ownership.  The ASF licenses this file
 *  to you under the Apache License, Version 2.0 (the
 *  "License"); you may not use this file except in compliance
 *  with the License.  You may obtain a copy of the License at
 *  
 *    http://www.apache.org/licenses/LICENSE-2.0
 *  
 *  Unless required by applicable law or agreed to in writing,
 *  software distributed under the License is distributed on an
 *  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 *  KIND, either express or implied.  See the License for the
 *  specific language governing permissions and limitations
 *  under the License. 
 *  
 */

package org.apache.directory.server.dns.io.encoder;


import org.apache.directory.server.dns.messages.ResourceRecord;
import org.apache.directory.server.dns.store.DnsAttribute;
import org.apache.mina.core.buffer.IoBuffer;


/**
 * 3.3.11. NS RDATA format
 * 
 *     +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+
 *     /                   NSDNAME                     /
 *     /                                               /
 *     +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+
 * 
 * where:
 * 
 * NSDNAME         A <domain-name> which specifies a host which should be
 *                 authoritative for the specified class and domain.
 * 
 * NS records cause both the usual additional section processing to locate
 * a type A record, and, when used in a referral, a special search of the
 * zone in which they reside for glue information.
 * 
 * The NS RR states that the named host should be expected to have a zone
 * starting at owner name of the specified class.  Note that the class may
 * not indicate the protocol family which should be used to communicate
 * with the host, although it is typically a strong hint.  For example,
 * hosts which are name servers for either Internet (IN) or Hesiod (HS)
 * class information are normally queried using IN class protocols.
 * 
 * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a>
 */
public class NameServerRecordEncoder extends ResourceRecordEncoder
{
    protected void putResourceRecordData( IoBuffer byteBuffer, ResourceRecord record )
    {
        String domainName = record.get( DnsAttribute.DOMAIN_NAME );

        putDomainName( byteBuffer, domainName );
    }
}