| /* |
| * Copyright (C) 2011 The Guava Authors |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except |
| * in compliance with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software distributed under the License |
| * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express |
| * or implied. See the License for the specific language governing permissions and limitations |
| * under the License. |
| */ |
| |
| package com.google.common.cache; |
| |
| import com.google.common.annotations.Beta; |
| import com.google.common.annotations.GwtCompatible; |
| |
| /** |
| * Calculates the weights of cache entries. |
| * |
| * @author Charles Fry |
| * @since 11.0 |
| */ |
| @Beta |
| @GwtCompatible |
| public interface Weigher<K, V> { |
| |
| /** |
| * Returns the weight of a cache entry. There is no unit for entry weights; rather they are simply |
| * relative to each other. |
| * |
| * @return the weight of the entry; must be non-negative |
| */ |
| int weigh(K key, V value); |
| } |