001/* 002 * Copyright (c) 2016-2017 Chris K Wensel <chris@wensel.net>. All Rights Reserved. 003 * Copyright (c) 2007-2017 Xplenty, Inc. All Rights Reserved. 004 * 005 * Project and contact information: http://www.cascading.org/ 006 * 007 * This file is part of the Cascading project. 008 * 009 * Licensed under the Apache License, Version 2.0 (the "License"); 010 * you may not use this file except in compliance with the License. 011 * You may obtain a copy of the License at 012 * 013 * http://www.apache.org/licenses/LICENSE-2.0 014 * 015 * Unless required by applicable law or agreed to in writing, software 016 * distributed under the License is distributed on an "AS IS" BASIS, 017 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 018 * See the License for the specific language governing permissions and 019 * limitations under the License. 020 */ 021 022package cascading.util.cache; 023 024import cascading.flow.FlowProcess; 025import cascading.provider.CascadingFactory; 026 027/** 028 * Base class for all CacheFactories for creating {@link CascadingCache} instances. Each sub-assembly using 029 * the {@link CascadingCache} facilities has it's own sub-class of this factory so that different Caches 030 * can be used for different parts of the same flow. 031 * <p> 032 * A {@link cascading.util.cache.CacheEvictionCallback} can be set and it will be given to each Cache instance created 033 * by the factory. If none is set, the Factory will use {@link cascading.util.cache.CacheEvictionCallback#NULL}, which 034 * is a no-op implementation of the {@link cascading.util.cache.CacheEvictionCallback} interface. 035 */ 036public abstract class BaseCacheFactory<Key, Value, Config> implements CascadingFactory<Config, CascadingCache<Key, Value>> 037 { 038 /** default capacity for all caches. */ 039 public static final int DEFAULT_CAPACITY = 10000; 040 041 @Override 042 public void initialize( FlowProcess<? extends Config> flowProcess ) 043 { 044 045 } 046 047 @Override 048 public abstract CascadingCache<Key, Value> create( FlowProcess<? extends Config> flowProcess ); 049 }