1 /*
2 * Copyright (c) 2008, 2019 Oracle and/or its affiliates. All rights reserved.
3 *
4 * This program and the accompanying materials are made available under the
5 * terms of the Eclipse Public License v. 2.0 which is available at
6 * http://www.eclipse.org/legal/epl-2.0,
7 * or the Eclipse Distribution License v. 1.0 which is available at
8 * http://www.eclipse.org/org/documents/edl-v10.php.
9 *
10 * SPDX-License-Identifier: EPL-2.0 OR BSD-3-Clause
11 */
12
13 // Contributors:
14 // Linda DeMichiel - 2.1
15 // Linda DeMichiel - 2.0
16
17 package javax.persistence;
18
19 /**
20 * Specifies how the provider must use a second-level cache for the
21 * persistence unit. Corresponds to the value of the <code>persistence.xml</code>
22 * <code>shared-cache-mode</code> element, and returned as the result of
23 * {@link javax.persistence.spi.PersistenceUnitInfo#getSharedCacheMode()}.
24 *
25 * @since 2.0
26 */
27 public enum SharedCacheMode {
28
29 /**
30 * All entities and entity-related state and data are cached.
31 */
32 ALL,
33
34 /**
35 * Caching is disabled for the persistence unit.
36 */
37 NONE,
38
39 /**
40 * Caching is enabled for all entities for <code>Cacheable(true)</code>
41 * is specified. All other entities are not cached.
42 */
43 ENABLE_SELECTIVE,
44
45 /**
46 * Caching is enabled for all entities except those for which
47 * <code>Cacheable(false)</code> is specified. Entities for which
48 * <code>Cacheable(false)</code> is specified are not cached.
49 */
50 DISABLE_SELECTIVE,
51
52 /**
53 *
54 * Caching behavior is undefined: provider-specific defaults may apply.
55 */
56 UNSPECIFIED
57 }
58