2 * Copyright 2016 ZTE Corporation.
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
8 * http://www.apache.org/licenses/LICENSE-2.0
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.
16 package org.openo.carbon.bpel.util;
18 import java.util.ArrayList;
19 import java.util.Collection;
20 import java.util.LinkedHashMap;
22 import java.util.concurrent.locks.Lock;
23 import java.util.concurrent.locks.ReentrantLock;
32 @SuppressWarnings("serial")
33 public class LRULinkedHashMap<K, V> extends LinkedHashMap<K, V> {
34 private final int maxCapacity;
36 private static final float DEFAULT_LOAD_FACTOR = 0.75f;
38 private final Lock lock = new ReentrantLock();
40 public LRULinkedHashMap(int maxCapacity) {
41 super(maxCapacity, DEFAULT_LOAD_FACTOR, true);
42 this.maxCapacity = maxCapacity;
46 protected boolean removeEldestEntry(java.util.Map.Entry<K, V> eldest) {
47 return size() > maxCapacity;
51 public boolean containsKey(Object key) {
54 return super.containsKey(key);
61 public V get(Object key) {
64 return super.get(key);
71 public V put(K key, V value) {
74 return super.put(key, value);
98 public Collection<Map.Entry<K, V>> getAll() {
101 return new ArrayList<Map.Entry<K, V>>(super.entrySet());