/*
 * Hibernate, Relational Persistence for Idiomatic Java
 *
 * Copyright (c) 2010, 2012 Red Hat Inc. or third-party contributors as
 * indicated by the @author tags or express copyright attribution
 * statements applied by the authors.  All third-party contributions are
 * distributed under license by Red Hat Inc.
 *
 * This copyrighted material is made available to anyone wishing to use, modify,
 * copy, or redistribute it subject to the terms and conditions of the GNU
 * Lesser General Public License, as published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
 * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License
 * for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this distribution; if not, write to:
 * Free Software Foundation, Inc.
 * 51 Franklin Street, Fifth Floor
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 */
package org.hibernate.jpa.criteria;

import javax.persistence.criteria.Expression;
import javax.persistence.criteria.Fetch;
import javax.persistence.criteria.Join;
import javax.persistence.criteria.Predicate;

Consolidates the Join and Fetch hierarchies since that is how we implement them. This allows us to treat them polymorphically. 
Author:
Steve Ebersole/**
 * Consolidates the {@link Join} and {@link Fetch} hierarchies since that is how we implement them.
 * This allows us to treat them polymorphically.
*
* @author Steve Ebersole
*/
public interface JoinImplementor<Z,X> extends Join<Z,X>, Fetch<Z,X>, FromImplementor<Z,X> {
	
Refined return type
/**
	 * Refined return type
	 */
	@Override
	public JoinImplementor<Z,X> correlateTo(CriteriaSubqueryImpl subquery);

	
Coordinate return type between Join.on(Expression) and Fetch.on(Expression) /**
	 * Coordinate return type between {@link Join#on(Expression)} and {@link Fetch#on(Expression)}
	 */
	@Override
	public JoinImplementor<Z, X> on(Expression<Boolean> restriction);

	
Coordinate return type between Join.on(Predicate...) and Fetch.on(Predicate...) /**
	 * Coordinate return type between {@link Join#on(Predicate...)} and {@link Fetch#on(Predicate...)}
	 */
	@Override
	public JoinImplementor<Z, X> on(Predicate... restrictions);

	@Override
	public <T extends X> JoinImplementor<Z, T> treatAs(Class<T> treatAsType);
}