1 /** 2 * This file Copyright (c) 2014-2017 Magnolia International 3 * Ltd. (http://www.magnolia-cms.com). All rights reserved. 4 * 5 * 6 * This file is dual-licensed under both the Magnolia 7 * Network Agreement and the GNU General Public License. 8 * You may elect to use one or the other of these licenses. 9 * 10 * This file is distributed in the hope that it will be 11 * useful, but AS-IS and WITHOUT ANY WARRANTY; without even the 12 * implied warranty of MERCHANTABILITY or FITNESS FOR A 13 * PARTICULAR PURPOSE, TITLE, or NONINFRINGEMENT. 14 * Redistribution, except as permitted by whichever of the GPL 15 * or MNA you select, is prohibited. 16 * 17 * 1. For the GPL license (GPL), you can redistribute and/or 18 * modify this file under the terms of the GNU General 19 * Public License, Version 3, as published by the Free Software 20 * Foundation. You should have received a copy of the GNU 21 * General Public License, Version 3 along with this program; 22 * if not, write to the Free Software Foundation, Inc., 51 23 * Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 24 * 25 * 2. For the Magnolia Network Agreement (MNA), this file 26 * and the accompanying materials are made available under the 27 * terms of the MNA which accompanies this distribution, and 28 * is available at http://www.magnolia-cms.com/mna.html 29 * 30 * Any modifications to this file must keep this entire header 31 * intact. 32 * 33 */ 34 package info.magnolia.module.cache.inject; 35 36 import info.magnolia.module.cache.CacheFactory; 37 import info.magnolia.module.cache.CacheModule; 38 import info.magnolia.module.cache.factory.DelegatingCacheFactory; 39 40 import javax.inject.Inject; 41 import javax.inject.Provider; 42 import javax.inject.Singleton; 43 44 /** 45 * A simple {@link Provider} which provides the CacheFactory instance. 46 * Merely a lazy shortcut for {@link info.magnolia.module.cache.CacheModule#getCacheFactory()}. 47 */ 48 @Singleton 49 public class CacheFactoryProvider implements Provider<CacheFactory> { 50 private final Provider<CacheModule> cacheModule; 51 52 @Inject 53 public CacheFactoryProvider(Provider<CacheModule> cacheModule) { 54 this.cacheModule = cacheModule; 55 } 56 57 @Override 58 public CacheFactory get() { 59 return cacheModule.get().getCacheFactory(); 60 } 61 62 public <T extends CacheFactory> T get(Class<T> clazz) { 63 CacheFactory cacheFactory = get(); 64 if (clazz.isInstance(cacheFactory)) { 65 return (T) cacheFactory; 66 } else if (cacheFactory instanceof DelegatingCacheFactory) { 67 for (CacheFactory delegatedCacheFactory : ((DelegatingCacheFactory) cacheFactory).getDelegateFactories()) { 68 if (clazz.isInstance(delegatedCacheFactory)) { 69 return (T) delegatedCacheFactory; 70 } 71 } 72 } 73 return null; 74 } 75 }