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     * The default implementation of a pair of comparators which compares both
027     * keys and values of a Tuple.
028     *
029     * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a>
030     * @version $Rev$, $Date$
031     */
032    public class DefaultTupleComparator<K, V> implements TupleComparator<K, V>
033    {
034        private static final long serialVersionUID = -6639792479317762334L;
035    
036        SerializableComparator<K> keyComparator;
037        SerializableComparator<V> valueComparator;
038    
039    
040        public DefaultTupleComparator( SerializableComparator<K> keyComparator, SerializableComparator<V> valueComparator )
041        {
042            this.keyComparator = keyComparator;
043            this.valueComparator = valueComparator;
044        }
045    
046    
047        public SerializableComparator<K> getKeyComparator()
048        {
049            return keyComparator;
050        }
051    
052    
053        public SerializableComparator<V> getValueComparator()
054        {
055            return valueComparator;
056        }
057    
058    
059        public int compareKey( K key1, K key2 )
060        {
061            return keyComparator.compare( key1, key2 );
062        }
063    
064    
065        public int compareValue( V value1, V value2 )
066        {
067            return valueComparator.compare( value1, value2 );
068        }
069    }