java - ORDER BY 使用 Criteria API

Question

当我编写 HQL 查询时

Query q = session.createQuery("SELECT cat from Cat as cat ORDER BY cat.mother.kind.value");
return q.list();

一切都很好。但是，当我写一个标准时

Criteria c = session.createCriteria(Cat.class);
c.addOrder(Order.asc("mother.kind.value"));
return c.list();

我得到一个异常 org.hibernate.QueryException: could not resolve property: kind.value of: my.sample.data.entities.Cat

如果我想使用 Criteria and Order，我应该如何表达我的“order by”？

Answer 1

您需要为 mother.kind 创建一个别名。你这样做是这样的。

Criteria c = session.createCriteria(Cat.class);
c.createAlias("mother.kind", "motherKind");
c.addOrder(Order.asc("motherKind.value"));
return c.list();