javax.persistence.criteria.Order Maven / Gradle / Ivy
/*******************************************************************************
* Copyright (c) 2008 - 2013 Oracle Corporation. All rights reserved.
*
* This program and the accompanying materials are made available under the
* terms of the Eclipse Public License v1.0 and Eclipse Distribution License v. 1.0
* which accompanies this distribution.
* The Eclipse Public License is available at http://www.eclipse.org/legal/epl-v10.html
* and the Eclipse Distribution License is available at
* http://www.eclipse.org/org/documents/edl-v10.php.
*
* 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 Order 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();
}