菜鸟提问：Hibernate的HQL语句有关问题

菜鸟提问：Hibernate的HQL语句问题
下面这句话是什么意思啊？
criteria.add(Expression.sql("POLICY_TYPE in ("
+ FreightConstant.POLICY + ","
+ FreightConstant.POLICT_TRIP + ")"));

[解决办法]
添加HQL语句