hibernate HQL转SQL

import org.hibernate.SessionFactory;  
import org.hibernate.hql.internal.ast.QueryTranslatorImpl;  
import org.hibernate.internal.SessionFactoryImpl;  

SessionFactoryImpl sfi = (SessionFactoryImpl) sessionFactory;
QueryTranslatorImpl queryTranslator = new QueryTranslatorImpl(hql, hql, null, sfi);   
queryTranslator.compile(null, false);  
String sql = queryTranslator.getSQLString();