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.
16 package org.wamblee.cache;
18 import java.io.Serializable;
20 import java.util.HashMap;
24 * A very simple cache based on a HashMap, It never expires any entries,
25 * and has no bounds on its size.
27 * @author Erik Brakkee
29 * @param <KeyType> DOCUMENT ME!
30 * @param <ValueType> DOCUMENT ME!
32 public class ForeverCache<KeyType extends Serializable, ValueType extends Serializable>
33 implements Cache<KeyType, ValueType> {
37 private HashMap<KeyType, ValueType> map;
40 * Constructs the cache.
43 public ForeverCache() {
44 map = new HashMap<KeyType, ValueType>();
50 * @see org.wamblee.cache.Cache#put(KeyType, ValueType)
55 * @param aKey DOCUMENT ME!
56 * @param aValue DOCUMENT ME!
58 public synchronized void put(KeyType aKey, ValueType aValue) {
59 map.put(aKey, aValue);
65 * @see org.wamblee.cache.Cache#get(KeyType)
70 * @param aKey DOCUMENT ME!
72 * @return DOCUMENT ME!
74 public synchronized ValueType get(KeyType aKey) {
81 * @see org.wamblee.cache.Cache#remove(KeyType)
86 * @param aKey DOCUMENT ME!
88 public synchronized void remove(KeyType aKey) {
95 * @see org.wamblee.cache.Cache#clear()
100 public synchronized void clear() {