| // Copyright (C) 2009 The Android Open Source Project |
| // |
| // 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.gerrit.server.cache; |
| |
| import com.google.common.cache.CacheLoader; |
| import com.google.common.cache.Weigher; |
| import com.google.gerrit.common.Nullable; |
| import com.google.inject.TypeLiteral; |
| |
| import java.util.concurrent.TimeUnit; |
| |
| /** Configure a cache declared within a {@link CacheModule} instance. */ |
| public interface CacheBinding<K, V> { |
| /** Set the total size of the cache. */ |
| CacheBinding<K, V> maximumWeight(long weight); |
| |
| /** Set the time an element lives before being expired. */ |
| CacheBinding<K, V> expireAfterWrite(long duration, TimeUnit durationUnits); |
| |
| /** Populate the cache with items from the CacheLoader. */ |
| CacheBinding<K, V> loader(Class<? extends CacheLoader<K, V>> clazz); |
| |
| /** Algorithm to weigh an object with a method other than the unit weight 1. */ |
| CacheBinding<K, V> weigher(Class<? extends Weigher<K, V>> clazz); |
| |
| String name(); |
| TypeLiteral<K> keyType(); |
| TypeLiteral<V> valueType(); |
| long maximumWeight(); |
| @Nullable Long expireAfterWrite(TimeUnit unit); |
| @Nullable Weigher<K, V> weigher(); |
| @Nullable CacheLoader<K, V> loader(); |
| } |