javax.persistence.criteria.CommonAbstractCriteria Maven / Gradle / Ivy
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/*
* 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;
/**
* 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();
}