hibernater将hql翻译成sql

protected String hqlToSql(String hql,
   org.hibernate.SessionFactory sessionFactory) throws Exception {
  org.hibernate.hql.ast.QueryTranslatorImpl queryTranslator = new org.hibernate.hql.ast.QueryTranslatorImpl(
    hql, hql, java.util.Collections.EMPTY_MAP,
    (org.hibernate.engine.SessionFactoryImplementor) sessionFactory);

  queryTranslator.compile(java.util.Collections.EMPTY_MAP, false);

  return queryTranslator.getSQLString();
 }