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    package org.apache.directory.server.core.partition.impl.btree;
020    
021    
022    import org.apache.directory.shared.ldap.schema.comparators.SerializableComparator;
023    
024    
025    /**
026     * A serializable comparator for long values.
027     *
028     * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a>
029     * @version $Rev$, $Date$
030     */
031    public class LongComparator extends SerializableComparator<Long>
032    {
033        public static final LongComparator INSTANCE = new LongComparator();
034        private static final long serialVersionUID = 3690478030414165816L;
035    
036    
037        public LongComparator()
038        {
039            super( "1.3.6.1.4.1.18060.0.4.1.1.2" );
040        }
041    
042    
043        public int compare( Long l1, Long l2 )
044        {
045            return ( l1 < l2 ? -1 : ( l1.equals( l2 ) ? 0 : 1 ) );
046        }
047    }