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.mavibot; 021 022import java.util.Comparator; 023 024import org.apache.directory.api.ldap.model.name.Dn; 025import org.apache.directory.api.ldap.model.schema.comparators.DnComparator; 026import org.apache.directory.mavibot.btree.Tuple; 027 028/** 029 * TODO LdifTupleComparator. 030 * 031 * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a> 032 */ 033public class LdifTupleComparator implements Comparator<Tuple<Dn, String>> 034{ 035 /** The DN comparator to use */ 036 DnComparator comparator = new DnComparator( null ); 037 038 @Override 039 public int compare( Tuple<Dn, String> t1, Tuple<Dn, String> t2 ) 040 { 041 Dn dn1 = t1.getKey(); 042 Dn dn2 = t2.getKey(); 043 044 if ( dn1.isAncestorOf( dn2 ) ) 045 { 046 return -1; 047 } 048 else if ( dn2.isAncestorOf( dn1 ) ) 049 { 050 return 1; 051 } 052 else if ( dn1.equals( dn2 ) ) 053 { 054 return 0; 055 } 056 057 return comparator.compare( dn1, dn2 ); 058 } 059}