hibernate - Hibernate Native SQL Mapping to Entity with Selection Example

Question

我尝试创建本机 sql 查询并使用参数映射到实体类但失败。

/**
     * @return
     */
    public List<PoolRuleMapping> getAllPRM() {
        Session session = null;
        List<PoolRuleMapping> prmList = null;

        try {
            session = HibernateSessionFactory.getSession();

            Query q = session.createSQLQuery("select * from pool_rule_mapping").addEntity(PoolRuleMapping.class);
            prmList = q.list();

        } catch (HibernateException e) {
        } finally {
            session.close();
        }

        return prmList;
    }

请举个例子。谢谢。

Answer 1

你可以试试下面的代码。

session.createSQLQuery("select * from pool_rule_mapping")
 .addScalar("ID", Hibernate.LONG)
 .addScalar("NAME", Hibernate.STRING)
 .addScalar("SOMEDATE", Hibernate.DATE)
 .addEntity(PoolRuleMapping.class);

此外，您可以尝试为各个字段指定别名。

select prm.id AS ID, prm.name AS NAME, prm.somedate as SOMEDATE from pool_rule_mapping prm