javax.persistence.criteria.Order Maven / Gradle / Ivy
// $Id: Order.java 17752 2009-10-15 01:19:21Z [email protected] $
// EJB3 Specification Copyright 2004-2009 Sun Microsystems, Inc.
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();
}