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 */ 20 package org.apache.directory.mavibot.btree; 21 22 23 /** 24 * An abstract class used to store a modification done on a BTree. 25 * 26 * @param <K> The key type 27 * @param <V> The value type 28 * 29 * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a> 30 */ 31 /* No qualifier*/abstract class Modification<K, V> extends Tuple<K, V> 32 { 33 /** The byte used to define an Addition in the serialized journal */ 34 public static final byte ADDITION = 0; 35 36 /** The byte used to define a Deletion in the serialized journal */ 37 public static final byte DELETION = 1; 38 39 40 /** 41 * Create a new Modification instance. 42 * 43 * @param key The key being modified 44 * @param value The value being modified 45 */ 46 protected Modification( K key, V value ) 47 { 48 super( key, value ); 49 } 50 }