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.xdbm;
022
023
024import org.apache.directory.api.ldap.model.schema.comparators.SerializableComparator;
025
026
027/**
028 * A comparator used to compare {@link ParentIdAndRdn} stored in the Rdn index.
029 * 
030 * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a>
031 */
032public class ParentIdAndRdnComparator<I extends Comparable<I>> extends SerializableComparator<ParentIdAndRdn>
033{
034    /** The serial version UID */
035    private static final long serialVersionUID = 2L;
036
037
038    /**
039     * Creates a new instance of ParentIdAndRdnComparator.
040     *
041     * @param matchingRuleOid The associated MatchingRule
042     */
043    public ParentIdAndRdnComparator( String matchingRuleOid )
044    {
045        super( matchingRuleOid );
046    }
047
048
049    /**
050     * {@inheritDoc}
051     */
052    @Override
053    public int compare( ParentIdAndRdn rdn1, ParentIdAndRdn rdn2 )
054    {
055        return rdn1.compareTo( rdn2 );
056    }
057}