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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.SetAttribute;
import java.util.Set;

/**
 * The SetJoin interface is the type of the result of joining to a collection over an association
 * or element collection that has been specified as a java.util.Set.
 * @param  the source type of the join
 * @param  the element type of the target Set
 */
public interface SetJoin extends PluralJoin, E>
{
    /**
     * Modify the join to restrict the result according to the specified ON condition. Replaces the previous
     * ON condition, if any. Return the join object
     * @param restriction a simple or compound boolean expression
     * @return the modified join object
     */
    SetJoin on(Expression restriction);

    /**
     * Modify the join to restrict the result according to the specified ON condition. Replaces the previous
     * ON condition, if any. Return the join object
     * @param restrictions zero or more restriction predicates
     * @return the modified join object
     */
    SetJoin on(Predicate... restrictions);

    /**
     * Return the metamodel representation for the set attribute.
     * @return metamodel type representing the Set that is the target of the join
     */
    SetAttribute getModel();
}




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