001/* 002 * Copyright (c) 2007-2016 Concurrent, Inc. All Rights Reserved. 003 * 004 * Project and contact information: http://www.cascading.org/ 005 * 006 * This file is part of the Cascading project. 007 * 008 * Licensed under the Apache License, Version 2.0 (the "License"); 009 * you may not use this file except in compliance with the License. 010 * You may obtain a copy of the License at 011 * 012 * http://www.apache.org/licenses/LICENSE-2.0 013 * 014 * Unless required by applicable law or agreed to in writing, software 015 * distributed under the License is distributed on an "AS IS" BASIS, 016 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 017 * See the License for the specific language governing permissions and 018 * limitations under the License. 019 */ 020 021package cascading.util.cache; 022 023import cascading.flow.FlowProcess; 024import cascading.provider.CascadingFactory; 025 026/** 027 * Base class for all CacheFactories for creating {@link CascadingCache} instances. Each sub-assembly using 028 * the {@link CascadingCache} facilities has it's own sub-class of this factory so that different Caches 029 * can be used for different parts of the same flow. 030 * <p/> 031 * A {@link cascading.util.cache.CacheEvictionCallback} can be set and it will be given to each Cache instance created 032 * by the factory. If none is set, the Factory will use {@link cascading.util.cache.CacheEvictionCallback#NULL}, which 033 * is a no-op implementation of the {@link cascading.util.cache.CacheEvictionCallback} interface. 034 */ 035public abstract class BaseCacheFactory<Key, Value, Config> implements CascadingFactory<Config, CascadingCache<Key, Value>> 036 { 037 /** default capacity for all caches. */ 038 public static final int DEFAULT_CAPACITY = 10000; 039 040 @Override 041 public void initialize( FlowProcess<? extends Config> flowProcess ) 042 { 043 044 } 045 046 @Override 047 public abstract CascadingCache<Key, Value> create( FlowProcess<? extends Config> flowProcess ); 048 }