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Java > Open Source Codes > oracle > toplink > essentials > config > PessimisticLock


1 /*
2  * The contents of this file are subject to the terms
3  * of the Common Development and Distribution License
4  * (the "License"). You may not use this file except
5  * in compliance with the License.
6  *
7  * You can obtain a copy of the license at
8  * glassfish/bootstrap/legal/CDDLv1.0.txt or
9  * https://glassfish.dev.java.net/public/CDDLv1.0.html.
10  * See the License for the specific language governing
11  * permissions and limitations under the License.
12  *
13  * When distributing Covered Code, include this CDDL
14  * HEADER in each file and include the License file at
15  * glassfish/bootstrap/legal/CDDLv1.0.txt. If applicable,
16  * add the following below this CDDL HEADER, with the
17  * fields enclosed by brackets "[]" replaced with your
18  * own identifying information: Portions Copyright [yyyy]
19  * [name of copyright owner]
20  */
21 // Copyright (c) 1998, 2006, Oracle. All rights reserved.
22 package oracle.toplink.essentials.config;
23
24 /**
25  * PessimisticLock hint values.
26  *
27  * The class contains all the valid values for TopLinkQueryHints.PESSIMISTIC_LOCK query hint.
28  *
29  * JPA Query Hint Usage:
30  *
31  * query.setHint(TopLinkQueryHints.PESSIMISTIC_LOCK, PessimisticLock.Lock);
32  * or
33  * @QueryHint(name=TopLinkQueryHints.PESSIMISTIC_LOCK, value=PessimisticLock.Lock)
34  *
35  * Hint values are case-insensitive.
36  * "" could be used instead of default value PessimisticLock.DEFAULT.
37  *
38  * @see TopLinkQueryHints
39  */
40 public class PessimisticLock {
41     public static final String JavaDoc NoLock = "NoLock";
42     public static final String JavaDoc Lock = "Lock";
43     public static final String JavaDoc LockNoWait = "LockNoWait";
44  
45     public static final String JavaDoc DEFAULT = NoLock;
46 }
47
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