//$Id: Expression.java,v 1.9 2005/02/12 07:19:13 steveebersole Exp $package org.hibernate.criterion;import org.hibernate.type.Type;import org.hibernate.util.ArrayHelper;/** * This class is semi-deprecated. Use <tt>Restrictions</tt>. * * @see Restrictions * @author Gavin King */public final class Expression extends Restrictions {	private Expression() {		//cannot be instantiated	}	/**	 * Apply a constraint expressed in SQL, with the given JDBC	 * parameters. Any occurrences of <tt>{alias}</tt> will be	 * replaced by the table alias.	 *	 * @param sql	 * @param values	 * @param types	 * @return Criterion	 */	public static Criterion sql(String sql, Object[] values, Type[] types) {		return new SQLCriterion(sql, values, types);	}	/**	 * Apply a constraint expressed in SQL, with the given JDBC	 * parameter. Any occurrences of <tt>{alias}</tt> will be replaced	 * by the table alias.	 *	 * @param sql	 * @param value	 * @param type	 * @return Criterion	 */	public static Criterion sql(String sql, Object value, Type type) {		return new SQLCriterion(sql, new Object[] { value }, new Type[] { type } );	}	/**	 * Apply a constraint expressed in SQL. Any occurrences of <tt>{alias}</tt>	 * will be replaced by the table alias.	 *	 * @param sql	 * @return Criterion	 */	public static Criterion sql(String sql) {		return new SQLCriterion(sql, ArrayHelper.EMPTY_OBJECT_ARRAY, ArrayHelper.EMPTY_TYPE_ARRAY);	}}