//$Id: Distinct.java 6452 2005-04-18 17:16:57Z oneovthafew $
package org.hibernate.criterion;

import org.hibernate.Criteria;
import org.hibernate.HibernateException;
import org.hibernate.type.Type;

/**
 * @author Gavin King
 */
public class Distinct implements Projection {

	private final Projection projection;
	
	public Distinct(Projection proj) {
		this.projection = proj;
	}

	public String toSqlString(Criteria criteria, int position, CriteriaQuery criteriaQuery)
			throws HibernateException {
		return "distinct " + projection.toSqlString(criteria, position, criteriaQuery);
	}

	public String toGroupSqlString(Criteria criteria, CriteriaQuery criteriaQuery)
			throws HibernateException {
		return projection.toGroupSqlString(criteria, criteriaQuery);
	}

	public Type[] getTypes(Criteria criteria, CriteriaQuery criteriaQuery)
			throws HibernateException {
		return projection.getTypes(criteria, criteriaQuery);
	}

	public Type[] getTypes(String alias, Criteria criteria, CriteriaQuery criteriaQuery)
			throws HibernateException {
		return projection.getTypes(alias, criteria, criteriaQuery);
	}

	public String[] getColumnAliases(int loc) {
		return projection.getColumnAliases(loc);
	}

	public String[] getColumnAliases(String alias, int loc) {
		return projection.getColumnAliases(alias, loc);
	}

	public String[] getAliases() {
		return projection.getAliases();
	}

	public boolean isGrouped() {
		return projection.isGrouped();
	}

	public String toString() {
		return "distinct " + projection.toString();
	}
}