javax.persistence.criteria.CommonAbstractCriteria Maven / Gradle / Ivy
/*
* Copyright (c) 2008, 2009, 2011 Oracle, Inc. 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.
*/
package javax.persistence.criteria;
/**
* The CommonAbstractCriteria interface defines functionality
* that is common to both top-level criteria queries and subqueries as
* well as to update and delete criteria operations.
* It is not intended to be used directly in query construction.
*
* Note that criteria queries and criteria update and delete operations
* are typed differently.
* Criteria queries are typed according to the query result type.
* Update and delete operations are typed according to the target of the
* update or delete.
*
* @since Java Persistence 2.1
*/
public interface CommonAbstractCriteria {
/**
* Create a subquery of the query.
*
* @param type the subquery result type
* @return subquery
*/
Subquery subquery(Class type);
/**
* Return the predicate that corresponds to the where clause
* restriction(s), or null if no restrictions have been
* specified.
*
* @return where clause predicate
*/
Predicate getRestriction();
}