| /* |
| * Copyright (c) 1998, 2020 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.config; |
| |
| /** |
| * PessimisticLock hint values. |
| * |
| * The class contains all the valid values for QueryHints.PESSIMISTIC_LOCK query hint. |
| * |
| * <p>JPA Query Hint Usage: |
| * |
| * <p><code>query.setHint(QueryHints.PESSIMISTIC_LOCK, PessimisticLock.Lock);</code> |
| * <p>or |
| * <p><code>@QueryHint(name=QueryHints.PESSIMISTIC_LOCK, value=PessimisticLock.Lock)</code> |
| * |
| * <p>Hint values are case-insensitive. |
| * "" could be used instead of default value PessimisticLock.DEFAULT. |
| * |
| * @see QueryHints |
| * |
| * <B>Note:</B> As of JPA 2.0 there is a standard way to configure pessimistic locking. |
| * @see jakarta.persistence.LockModeType |
| * @see jakarta.persistence.EntityManager (find(), refresh(), lock()) |
| * @see jakarta.persistence.Query (setLockMode()) |
| */ |
| public class PessimisticLock { |
| public static final String NoLock = "NoLock"; |
| public static final String Lock = "Lock"; |
| public static final String LockNoWait = "LockNoWait"; |
| |
| public static final String DEFAULT = NoLock; |
| } |
