| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You 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 org.qi4j.test.cache; |
| |
| import java.util.concurrent.ConcurrentHashMap; |
| import org.qi4j.api.util.NullArgumentException; |
| import org.qi4j.spi.cache.Cache; |
| |
| import static org.qi4j.functional.Iterables.single; |
| |
| /** |
| * In-Memory CachePool Mixin based on ConcurrentHashMap. |
| */ |
| public abstract class MemoryCachePoolMixin |
| implements MemoryCachePoolService |
| { |
| private final ConcurrentHashMap<String, MemoryCacheImpl<?>> caches = new ConcurrentHashMap<>(); |
| |
| @Override |
| public <T> Cache<T> fetchCache( String cacheId, Class<T> valueType ) |
| { |
| NullArgumentException.validateNotEmpty( "cacheId", cacheId ); |
| MemoryCacheImpl<?> cache = caches.get( cacheId ); |
| if( cache == null ) |
| { |
| cache = createNewCache( cacheId, valueType ); |
| caches.put( cacheId, cache ); |
| } |
| cache.incRefCount(); |
| return (Cache<T>) cache; |
| } |
| |
| private <T> MemoryCacheImpl<T> createNewCache( String cacheId, Class<T> valueType ) |
| { |
| return new MemoryCacheImpl<>( cacheId, new ConcurrentHashMap<String, Object>(), valueType ); |
| } |
| |
| @Override |
| public void returnCache( Cache<?> cache ) |
| { |
| MemoryCacheImpl<?> memory = (MemoryCacheImpl<?>) cache; |
| memory.decRefCount(); |
| if( memory.isNotUsed() ) |
| { |
| caches.remove( memory.cacheId() ); |
| } |
| } |
| |
| @Override |
| public void activateService() |
| throws Exception |
| { |
| caches.clear(); |
| } |
| |
| @Override |
| public void passivateService() |
| throws Exception |
| { |
| caches.clear(); |
| } |
| |
| @Override |
| public MemoryCacheImpl<?> singleCache() |
| { |
| return single( caches.values() ); |
| } |
| } |