1 package org.apache.commons.jcs.utils.struct; 2 3 /* 4 * Licensed to the Apache Software Foundation (ASF) under one 5 * or more contributor license agreements. See the NOTICE file 6 * distributed with this work for additional information 7 * regarding copyright ownership. The ASF licenses this file 8 * to you under the Apache License, Version 2.0 (the 9 * "License"); you may not use this file except in compliance 10 * with the License. You may obtain a copy of the License at 11 * 12 * http://www.apache.org/licenses/LICENSE-2.0 13 * 14 * Unless required by applicable law or agreed to in writing, 15 * software distributed under the License is distributed on an 16 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 17 * KIND, either express or implied. See the License for the 18 * specific language governing permissions and limitations 19 * under the License. 20 */ 21 22 import java.io.Serializable; 23 import java.util.Map.Entry; 24 25 /** 26 * Entry for the LRUMap. 27 * <p> 28 * @author Aaron Smuts 29 */ 30 public class LRUMapEntry<K, V> 31 implements Entry<K, V>, Serializable 32 { 33 /** Don't change */ 34 private static final long serialVersionUID = -8176116317739129331L; 35 36 /** key */ 37 private final K key; 38 39 /** value */ 40 private V value; 41 42 /** 43 * S 44 * @param key 45 * @param value 46 */ 47 public LRUMapEntry(K key, V value) 48 { 49 this.key = key; 50 this.value = value; 51 } 52 53 /** 54 * @return key 55 */ 56 @Override 57 public K getKey() 58 { 59 return this.key; 60 } 61 62 /** 63 * @return value 64 */ 65 @Override 66 public V getValue() 67 { 68 return this.value; 69 } 70 71 /** 72 * @param valueArg 73 * @return the old value 74 */ 75 @Override 76 public V setValue(V valueArg) 77 { 78 V old = this.value; 79 this.value = valueArg; 80 return old; 81 } 82 }