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The Java Persistence API (JPA) : a standard interface-based Java model abstraction of persistence, developed by the JCP.
/*
* 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.
*/
public interface CommonAbstractCriteria
{
/**
* Create a subquery of the query.
* @param type the subquery result type
* @return subquery
* @param Type
*/
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();
}