2 * Copyright (c) 2014 Cisco Systems, Inc. and others. All rights reserved.
4 * This program and the accompanying materials are made available under the
5 * terms of the Eclipse Public License v1.0 which accompanies this distribution,
6 * and is available at http://www.eclipse.org/legal/epl-v10.html
8 package org.opendaylight.yangtools.objcache;
10 import com.google.common.base.Preconditions;
11 import javax.annotation.Nonnull;
12 import javax.annotation.concurrent.GuardedBy;
13 import org.opendaylight.yangtools.objcache.impl.StaticObjectCacheBinder;
14 import org.opendaylight.yangtools.objcache.spi.IObjectCacheFactory;
15 import org.opendaylight.yangtools.objcache.spi.NoopObjectCacheBinder;
18 * Point of entry for acquiring an {@link ObjectCache} instance.
20 public final class ObjectCacheFactory {
21 private static volatile IObjectCacheFactory factory;
23 private ObjectCacheFactory() {
24 throw new UnsupportedOperationException("Utility class should not be instantiated");
28 private static synchronized IObjectCacheFactory initialize() {
29 // Double-check under lock
30 IObjectCacheFactory fa = factory;
36 fa = StaticObjectCacheBinder.getInstance().getProductCacheFactory();
38 } catch (NoClassDefFoundError e) {
39 fa = NoopObjectCacheBinder.INSTANCE.getProductCacheFactory();
45 public static synchronized void reset() {
50 * Get an ObjectCache for caching a particular object class. Note
51 * that it may be shared for multiple classes.
53 * @param objClass Class of objects which are to be cached
54 * @return Object cache instance.
56 public static ObjectCache getObjectCache(@Nonnull final Class<?> objClass) {
57 IObjectCacheFactory fa = factory;
62 return fa.getObjectCache(Preconditions.checkNotNull(objClass));