2 * Copyright 2005 the original author or authors.
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.
17 package org.wamblee.cache;
19 import java.io.Serializable;
20 import java.util.HashMap;
23 * A very simple cache based on a HashMap, It never expires any entries, and has
24 * no bounds on its size.
26 * @author Erik Brakkee
28 public class ForeverCache<KeyType extends Serializable, ValueType extends Serializable>
29 implements Cache<KeyType, ValueType> {
34 private HashMap<KeyType, ValueType> _map;
37 * Constructs the cache.
40 public ForeverCache() {
41 _map = new HashMap<KeyType, ValueType>();
47 * @see org.wamblee.cache.Cache#put(KeyType, ValueType)
49 public synchronized void put(KeyType aKey, ValueType aValue) {
50 _map.put(aKey, aValue);
56 * @see org.wamblee.cache.Cache#get(KeyType)
58 public synchronized ValueType get(KeyType aKey) {
59 return _map.get(aKey);
65 * @see org.wamblee.cache.Cache#remove(KeyType)
67 public synchronized void remove(KeyType aKey) {
74 * @see org.wamblee.cache.Cache#clear()
76 public synchronized void clear() {