/*
 * Hibernate, Relational Persistence for Idiomatic Java
 *
 * Copyright (c) 2008, 2013, 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.
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 */
package org.hibernate.criterion;

import org.hibernate.Criteria;

Expression that checks the existence of rows in a sub-query
Author:
Gavin King/**
 * Expression that checks the existence of rows in a sub-query
 *
 * @author Gavin King
 */
public class ExistsSubqueryExpression extends SubqueryExpression {
	
Constructs the ExistsSubqueryExpression
Params:
quantifier – The "exists"/"not exists" sub-query quantifier
dc – The DetachedCriteria representing the sub-query
See Also:
Subqueries.exists
Subqueries.notExists/**
	 * Constructs the ExistsSubqueryExpression
	 *
	 * @param quantifier The "exists"/"not exists" sub-query quantifier
	 * @param dc The DetachedCriteria representing the sub-query
	 *
	 * @see Subqueries#exists
	 * @see Subqueries#notExists
	 */
	protected ExistsSubqueryExpression(String quantifier, DetachedCriteria dc) {
		super( null, quantifier, dc );
	}

	@Override
	protected String toLeftSqlString(Criteria criteria, CriteriaQuery outerQuery) {
		return "";
	}
}