| LRUMap.java |
1 /**
2 * Copyright (c) 2000-2010 Liferay, Inc. All rights reserved.
3 *
4 * The contents of this file are subject to the terms of the Liferay Enterprise
5 * Subscription License ("License"). You may not use this file except in
6 * compliance with the License. You can obtain a copy of the License by
7 * contacting Liferay, Inc. See the License for the specific language governing
8 * permissions and limitations under the License, including but not limited to
9 * distribution rights of the Software.
10 *
11 *
12 *
13 */
14
15 package com.liferay.portal.kernel.util;
16
17 import java.util.LinkedHashMap;
18 import java.util.Map;
19
20 /**
21 * <a href="LRUMap.java.html"><b><i>View Source</i></b></a>
22 *
23 * @author Brian Wing Shun Chan
24 */
25 public class LRUMap<K, V> extends LinkedHashMap<K, V> {
26
27 public LRUMap(int capacity) {
28 super(capacity * 3 / 2, 0.75f, true);
29
30 _capacity = capacity;
31 }
32
33 protected boolean removeEldestEntry(Map.Entry<K, V> eldest) {
34 if (size() > _capacity) {
35 return true;
36 }
37 else {
38 return false;
39 }
40 }
41
42 private int _capacity;
43
44 }