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The core O/RM functionality as provided by Hibernate

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/*
 * Hibernate, Relational Persistence for Idiomatic Java
 *
 * Copyright (c) 2008, Red Hat Middleware LLC 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 Middleware LLC.
 *
 * 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
 * Boston, MA  02110-1301  USA
 *
 */
package org.hibernate.criterion;
import org.hibernate.Criteria;

/**
 * A comparison between a property value in the outer query and the
 * result of a subquery
 * @author Gavin King
 */
public class PropertySubqueryExpression extends SubqueryExpression {
	private String propertyName;

	protected PropertySubqueryExpression(String propertyName, String op, String quantifier, DetachedCriteria dc) {
		super(op, quantifier, dc);
		this.propertyName = propertyName;
	}

	protected String toLeftSqlString(Criteria criteria, CriteriaQuery criteriaQuery) {
		return criteriaQuery.getColumn(criteria, propertyName);
	}

}