1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
|
/*
* Copyright (c) 1998, 2018 Oracle and/or its affiliates. All rights reserved.
*
* This program and the accompanying materials are made available under the
* terms of the Eclipse Public License v. 2.0 which is available at
* http://www.eclipse.org/legal/epl-2.0,
* or the Eclipse Distribution License v. 1.0 which is available at
* http://www.eclipse.org/org/documents/edl-v10.php.
*
* SPDX-License-Identifier: EPL-2.0 OR BSD-3-Clause
*/
// Contributors:
// Oracle - initial API and implementation from Oracle TopLink
package org.eclipse.persistence.annotations;
import java.lang.annotation.Target;
import java.lang.annotation.Retention;
import static java.lang.annotation.ElementType.TYPE;
import static java.lang.annotation.RetentionPolicy.RUNTIME;
import javax.persistence.Column;
import static org.eclipse.persistence.annotations.OptimisticLockingType.VERSION_COLUMN;
/**
* The OptimisticLocking annotation is used to specify the type of optimistic
* locking TopLink should use when updating or deleting entities.
*
* An optimistic-locking specification is supported on an Entity or
* MappedSuperclass annotation.
*
* @see org.eclipse.persistence.annotations.OptimisticLockingType
* @author Guy Pelletier
* @since Oracle TopLink 11.1.1.0.0
*/
@Target({TYPE})
@Retention(RUNTIME)
public @interface OptimisticLocking {
/**
* (Optional) The type of optimistic locking policy to use.
*/
OptimisticLockingType type() default VERSION_COLUMN;
/**
* (Optional) For an optimistic locking policy of type SELECTED_COLUMNS,
* this annotation member becomes a (Required) field.
*/
Column[] selectedColumns() default {};
/**
* (Optional) Specify where the optimistic locking policy should cascade
* lock. Currently only supported with VERSION_COLUMN locking.
*/
boolean cascade() default false;
}
|
