//$Id: AggregateProjection.java 9908 2006-05-08 20:59:20Z max.andersen@jboss.com $package org.hibernate.criterion;import org.hibernate.Criteria;import org.hibernate.HibernateException;import org.hibernate.type.Type;/** * An aggregation * @author max */public class AggregateProjection extends SimpleProjection {	protected final String propertyName;	private final String aggregate;		protected AggregateProjection(String aggregate, String propertyName) {		this.aggregate = aggregate;		this.propertyName = propertyName;	}	public String toString() {		return aggregate + "(" + propertyName + ')';	}	public Type[] getTypes(Criteria criteria, CriteriaQuery criteriaQuery) 	throws HibernateException {		return new Type[] { criteriaQuery.getType(criteria, propertyName) };	}	public String toSqlString(Criteria criteria, int loc, CriteriaQuery criteriaQuery) 	throws HibernateException {		return new StringBuffer()			.append(aggregate)			.append("(")			.append( criteriaQuery.getColumn(criteria, propertyName) )			.append(") as y")			.append(loc)			.append('_')			.toString();	}}