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 */
020package org.apache.directory.server.core.partition.impl.btree.jdbm;
021
022
023import org.apache.directory.api.ldap.model.name.Dn;
024import org.apache.directory.api.ldap.model.schema.comparators.DnComparator;
025import org.apache.directory.api.ldap.model.schema.comparators.SerializableComparator;
026
027
028/**
029 * A comparator used to compare {@link Dn} stored in the Dn index.
030 *  
031 * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a>
032 */
033public class DnSerializerComparator extends SerializableComparator<Dn>
034{
035    /** The serialVersionUID */
036    private static final long serialVersionUID = 1L;
037    
038    /** The DN comparator */
039    private static DnComparator dnComparator = new DnComparator( null );
040
041
042    /**
043     * Creates a new instance of DnSerializer.
044     * 
045     * @param oid The comparator OID
046     */
047    public DnSerializerComparator( String oid )
048    {
049        super( oid );
050    }
051
052
053    /**
054     * {@inheritDoc}
055     */
056    @Override
057    public int compare( Dn dn1, Dn dn2 )
058    {
059        return dnComparator.compare( dn1, dn2 );
060    }
061}