| /*- |
| * Copyright (C) 2002, 2018, Oracle and/or its affiliates. All rights reserved. |
| * |
| * This file was distributed by Oracle as part of a version of Oracle Berkeley |
| * DB Java Edition made available at: |
| * |
| * http://www.oracle.com/technetwork/database/database-technologies/berkeleydb/downloads/index.html |
| * |
| * Please see the LICENSE file included in the top-level directory of the |
| * appropriate version of Oracle Berkeley DB Java Edition for a copy of the |
| * license and additional information. |
| */ |
| |
| package com.sleepycat.persist.model; |
| |
| /** |
| * Defines the relationship between instances of the entity class and the |
| * secondary keys. This can be specified using a {@link SecondaryKey#relate} |
| * annotation. |
| * |
| * @author Mark Hayes |
| */ |
| public enum Relationship { |
| |
| /** |
| * Relates many entities to one secondary key. |
| * |
| * <p>The secondary index will have non-unique keys; in other words, |
| * duplicates will be allowed.</p> |
| * |
| * <p>The secondary key field is singular, in other words, it may not be an |
| * array or collection type.</p> |
| */ |
| MANY_TO_ONE, |
| |
| /** |
| * Relates one entity to many secondary keys. |
| * |
| * <p>The secondary index will have unique keys, in other words, duplicates |
| * will not be allowed.</p> |
| * |
| * <p>The secondary key field must be an array or collection type.</p> |
| */ |
| ONE_TO_MANY, |
| |
| /** |
| * Relates many entities to many secondary keys. |
| * |
| * <p>The secondary index will have non-unique keys, in other words, |
| * duplicates will be allowed.</p> |
| * |
| * <p>The secondary key field must be an array or collection type.</p> |
| */ |
| MANY_TO_MANY, |
| |
| /** |
| * Relates one entity to one secondary key. |
| * |
| * <p>The secondary index will have unique keys, in other words, duplicates |
| * will not be allowed.</p> |
| * |
| * <p>The secondary key field is singular, in other words, it may not be an |
| * array or collection type.</p> |
| */ |
| ONE_TO_ONE; |
| } |