11d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert/* 21d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert * Copyright (C) 2011 The Guava Authors 31d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert * 41d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except 51d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert * in compliance with the License. You may obtain a copy of the License at 61d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert * 71d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert * http://www.apache.org/licenses/LICENSE-2.0 81d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert * 91d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert * Unless required by applicable law or agreed to in writing, software distributed under the License 101d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express 111d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert * or implied. See the License for the specific language governing permissions and limitations under 121d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert * the License. 131d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert */ 141d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert 151d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringertpackage com.google.common.cache; 161d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert 171d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert/** 181d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert * Utility {@link Weigher} implementations intended for use in testing. 191d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert * 201d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert * @author Charles Fry 211d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert */ 221d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringertpublic class TestingWeighers { 231d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert 241d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert /** 251d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert * Returns a {@link Weigher} that returns the given {@code constant} for every request. 261d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert */ 271d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert static Weigher<Object, Object> constantWeigher(int constant) { 281d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert return new ConstantWeigher(constant); 291d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert } 301d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert 311d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert /** 321d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert * Returns a {@link Weigher} that uses the integer key as the weight. 331d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert */ 341d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert static Weigher<Integer, Object> intKeyWeigher() { 351d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert return new IntKeyWeigher(); 361d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert } 371d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert 381d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert /** 391d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert * Returns a {@link Weigher} that uses the integer value as the weight. 401d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert */ 411d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert static Weigher<Object, Integer> intValueWeigher() { 421d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert return new IntValueWeigher(); 431d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert } 441d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert 451d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert static final class ConstantWeigher implements Weigher<Object, Object> { 461d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert private final int constant; 471d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert 481d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert ConstantWeigher(int constant) { 491d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert this.constant = constant; 501d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert } 511d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert 521d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert @Override 531d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert public int weigh(Object key, Object value) { 541d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert return constant; 551d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert } 561d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert } 571d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert 581d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert static final class IntKeyWeigher implements Weigher<Integer, Object> { 591d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert @Override 601d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert public int weigh(Integer key, Object value) { 611d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert return key; 621d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert } 631d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert } 641d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert 651d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert static final class IntValueWeigher implements Weigher<Object, Integer> { 661d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert @Override 671d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert public int weigh(Object key, Integer value) { 681d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert return value; 691d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert } 701d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert } 711d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert 721d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert} 73