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1   /*
2    * Licensed to the Apache Software Foundation (ASF) under one
3    * or more contributor license agreements.  See the NOTICE file
4    * distributed with this work for additional information
5    * regarding copyright ownership.  The ASF licenses this file
6    * to you under the Apache License, Version 2.0 (the
7    * "License"); you may not use this file except in compliance
8    * with the License.  You may obtain a copy of the License at
9    *
10   *  http://www.apache.org/licenses/LICENSE-2.0
11   *
12   * Unless required by applicable law or agreed to in writing,
13   * software distributed under the License is distributed on an
14   * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
15   * KIND, either express or implied.  See the License for the
16   * specific language governing permissions and limitations
17   * under the License.
18   */
19  package org.apache.directory.server.core.partition.impl.btree;
20  
21  
22  import org.apache.directory.server.schema.SerializableComparator;
23  
24  
25  /**
26   * A serializable comparator for long values.
27   *
28   * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a>
29   * @version $Rev$, $Date$
30   */
31  public class LongComparator extends SerializableComparator<Long>
32  {
33      public static final LongComparator INSTANCE = new LongComparator();
34      private static final long serialVersionUID = 3690478030414165816L;
35  
36  
37      public LongComparator()
38      {
39          super( "1.3.6.1.4.1.18060.0.4.1.1.2" );
40      }
41  
42  
43      public int compare( Long l1, Long l2 )
44      {
45          return ( l1 < l2 ? -1 : ( l1.equals( l2 ) ? 0 : 1 ) );
46      }
47  }