66 lines
1.9 KiB
Java
66 lines
1.9 KiB
Java
/*
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* Copyright (C) 2011 The Guava Authors
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*
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* Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
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* in compliance with the License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software distributed under the License
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* is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
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* or implied. See the License for the specific language governing permissions and limitations under
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* the License.
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*/
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package com.google.common.cache;
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/**
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* Utility {@link Weigher} implementations intended for use in testing.
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*
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* @author Charles Fry
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*/
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public class TestingWeighers {
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/** Returns a {@link Weigher} that returns the given {@code constant} for every request. */
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static Weigher<Object, Object> constantWeigher(int constant) {
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return new ConstantWeigher(constant);
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}
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/** Returns a {@link Weigher} that uses the integer key as the weight. */
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static Weigher<Integer, Object> intKeyWeigher() {
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return new IntKeyWeigher();
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}
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/** Returns a {@link Weigher} that uses the integer value as the weight. */
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static Weigher<Object, Integer> intValueWeigher() {
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return new IntValueWeigher();
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}
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static final class ConstantWeigher implements Weigher<Object, Object> {
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private final int constant;
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ConstantWeigher(int constant) {
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this.constant = constant;
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}
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@Override
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public int weigh(Object key, Object value) {
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return constant;
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}
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}
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static final class IntKeyWeigher implements Weigher<Integer, Object> {
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@Override
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public int weigh(Integer key, Object value) {
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return key;
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}
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}
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static final class IntValueWeigher implements Weigher<Object, Integer> {
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@Override
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public int weigh(Object key, Integer value) {
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return value;
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}
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}
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}
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