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The Java Persistence API (JPA) : a standard interface-based Java model abstraction of persistence, developed by the JCP.

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/*
 * 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;

import javax.persistence.metamodel.PluralAttribute;

/**
 * The PluralJoin interface defines functionality that is common to joins to all collection
 * types. It is not intended to be used directly in query construction.
 * @param  the source type
 * @param  the collection type
 * @param  the element type of the collection
 */
public interface PluralJoin extends Join
{
    /**
     * Return the metamodel representation for the collection-valued attribute corresponding to the join.
     * @return metamodel collection-valued attribute corresponding to the target of the join
     */
    PluralAttribute getModel();
}