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 /**
23 * This is a node in the double linked list. It is stored as the value in the underlying map used by
24 * the LRUMap class.
25 */
26 public class LRUElementDescriptor<K, V>
27 extends DoubleLinkedListNode<V>
28 {
29 /** Don't change. */
30 private static final long serialVersionUID = 8249555756363020156L;
31
32 /** The key value */
33 private K key;
34
35 /**
36 * @param key
37 * @param payloadP
38 */
39 public LRUElementDescriptor(K key, V payloadP)
40 {
41 super(payloadP);
42 this.setKey(key);
43 }
44
45 /**
46 * @param key The key to set.
47 */
48 public void setKey(K key)
49 {
50 this.key = key;
51 }
52
53 /**
54 * @return Returns the key.
55 */
56 public K getKey()
57 {
58 return key;
59 }
60 }