| /* |
| * Copyright (c) 2008, 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: |
| // Linda DeMichiel - Java Persistence 2.1 |
| // Linda DeMichiel - Java Persistence 2.0 |
| |
| package javax.persistence.criteria; |
| |
| /** |
| * An object that defines an ordering over the query results. |
| * |
| * @since Java Persistence 2.0 |
| */ |
| public interface Order { |
| |
| /** |
| * Switch the ordering. |
| * @return a new <code>Order</code> instance with the reversed ordering |
| */ |
| Order reverse(); |
| |
| /** |
| * Whether ascending ordering is in effect. |
| * @return boolean indicating whether ordering is ascending |
| */ |
| boolean isAscending(); |
| |
| /** |
| * Return the expression that is used for ordering. |
| * @return expression used for ordering |
| */ |
| Expression<?> getExpression(); |
| } |