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Java > Open Source Codes > org > apache > roller > util > LRUCache


1 /*
2 * Licensed to the Apache Software Foundation (ASF) under one or more
3 * contributor license agreements. The ASF licenses this file to You
4 * under the Apache License, Version 2.0 (the "License"); you may not
5 * use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License. For additional information regarding
15 * copyright in this work, please see the NOTICE file in the top level
16 * directory of this distribution.
17 */
18 /*
19  * Created on Jun 15, 2004
20  */
21 package org.apache.roller.util;
22
23 import java.util.Map JavaDoc;
24
25 // David Flanaghan: http://www.davidflanagan.com/blog/000014.html
26 public class LRUCache extends java.util.LinkedHashMap JavaDoc
27 {
28     protected int maxsize;
29     public LRUCache(int maxsize)
30     {
31         super(maxsize*4/3 + 1, 0.75f, true);
32         this.maxsize = maxsize;
33     }
34     protected boolean removeEldestEntry(Map.Entry JavaDoc eldest) {
35         return size() > this.maxsize;
36     }
37 }
38     
39
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