| /* |
| * 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.apache.commons.jcs.jcache; |
| |
| import javax.cache.CacheManager; |
| import javax.cache.configuration.OptionalFeature; |
| import javax.cache.spi.CachingProvider; |
| import java.net.URI; |
| import java.util.Map; |
| import java.util.Properties; |
| import java.util.concurrent.ConcurrentHashMap; |
| import java.util.concurrent.ConcurrentMap; |
| |
| public class JCSCachingProvider implements CachingProvider |
| { |
| public static final URI DEFAULT_URI = URI.create("jcs://jcache.ccf"); |
| |
| private final ConcurrentMap<ClassLoader, ConcurrentMap<URI, CacheManager>> cacheManagersByLoader = new ConcurrentHashMap<ClassLoader, ConcurrentMap<URI, CacheManager>>(); |
| |
| @Override |
| public CacheManager getCacheManager(final URI inUri, final ClassLoader inClassLoader, final Properties properties) |
| { |
| final URI uri = inUri != null ? inUri : getDefaultURI(); |
| final ClassLoader classLoader = inClassLoader != null ? inClassLoader : getDefaultClassLoader(); |
| |
| ConcurrentMap<URI, CacheManager> managers = cacheManagersByLoader.get(classLoader); |
| if (managers == null) |
| { |
| managers = new ConcurrentHashMap<URI, CacheManager>(); |
| final ConcurrentMap<URI, CacheManager> existingManagers = cacheManagersByLoader.putIfAbsent(classLoader, managers); |
| if (existingManagers != null) |
| { |
| managers = existingManagers; |
| } |
| } |
| |
| CacheManager mgr = managers.get(uri); |
| if (mgr == null) |
| { |
| mgr = new JCSCachingManager(this, uri, classLoader, properties); |
| final CacheManager existing = managers.putIfAbsent(uri, mgr); |
| if (existing != null) |
| { |
| mgr = existing; |
| } |
| } |
| |
| return mgr; |
| } |
| |
| @Override |
| public URI getDefaultURI() |
| { |
| return DEFAULT_URI; |
| } |
| |
| @Override |
| public void close() |
| { |
| for (final Map<URI, CacheManager> v : cacheManagersByLoader.values()) |
| { |
| for (final CacheManager m : v.values()) |
| { |
| m.close(); |
| } |
| v.clear(); |
| } |
| cacheManagersByLoader.clear(); |
| } |
| |
| @Override |
| public void close(final ClassLoader classLoader) |
| { |
| final Map<URI, CacheManager> cacheManagers = cacheManagersByLoader.remove(classLoader); |
| if (cacheManagers != null) |
| { |
| for (final CacheManager mgr : cacheManagers.values()) |
| { |
| mgr.close(); |
| } |
| cacheManagers.clear(); |
| } |
| } |
| |
| @Override |
| public void close(final URI uri, final ClassLoader classLoader) |
| { |
| final Map<URI, CacheManager> cacheManagers = cacheManagersByLoader.remove(classLoader); |
| if (cacheManagers != null) |
| { |
| final CacheManager mgr = cacheManagers.remove(uri); |
| if (mgr != null) |
| { |
| mgr.close(); |
| } |
| } |
| } |
| |
| @Override |
| public CacheManager getCacheManager(final URI uri, final ClassLoader classLoader) |
| { |
| return getCacheManager(uri, classLoader, getDefaultProperties()); |
| } |
| |
| @Override |
| public CacheManager getCacheManager() |
| { |
| return getCacheManager(getDefaultURI(), getDefaultClassLoader()); |
| } |
| |
| @Override |
| public boolean isSupported(final OptionalFeature optionalFeature) |
| { |
| return optionalFeature == OptionalFeature.STORE_BY_REFERENCE; |
| } |
| |
| @Override |
| public ClassLoader getDefaultClassLoader() |
| { |
| return JCSCachingProvider.class.getClassLoader(); |
| } |
| |
| @Override |
| public Properties getDefaultProperties() |
| { |
| return new Properties(); |
| } |
| |
| void remove(final CacheManager mgr) |
| { |
| final ClassLoader classLoader = mgr.getClassLoader(); |
| final Map<URI, CacheManager> mgrs = cacheManagersByLoader.get(classLoader); |
| if (mgrs != null) |
| { |
| mgrs.remove(mgr.getURI()); |
| if (mgrs.isEmpty()) |
| { |
| cacheManagersByLoader.remove(classLoader); |
| } |
| } |
| } |
| } |