1/*
2 * Copyright (C) 2008 The Android Open Source Project
3 *
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
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.
15 */
16
17package android.test;
18
19import java.util.HashMap;
20import java.util.Map;
21
22abstract class SimpleCache<K, V> {
23    private Map<K, V> map = new HashMap<K, V>();
24
25    protected abstract V load(K key);
26
27    final V get(K key) {
28        if (map.containsKey(key)) {
29            return map.get(key);
30        }
31        V value = load(key);
32        map.put(key, value);
33        return value;
34    }
35}
36