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 17 package android.test; 18 19 import java.util.HashMap; 20 import java.util.Map; 21 22 abstract class SimpleCache<K, V> { 23 private Map<K, V> map = new HashMap<K, V>(); 24 load(K key)25 protected abstract V load(K key); 26 get(K key)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