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 * Defines inheritance strategy options.
21 *
22 * @since 1.0
23 */
24 public enum InheritanceType {
25
26 /** A single table per class hierarchy. */
27 SINGLE_TABLE,
28
29 /** A table per concrete entity class. */
30 TABLE_PER_CLASS,
31
32 /**
33 * A strategy in which fields that are specific to a
34 * subclass are mapped to a separate table than the fields
35 * that are common to the parent class, and a join is
36 * performed to instantiate the subclass.
37 */
38 JOINED
39 }
40