我正在跟踪关于连接表的一对多和多对一单向关联的休眠文档。

我试图通过创建如下的Person＆Address实体来实现一个简单的示例：

Person has an id and name property with setters & getters
Address has an id and name property with setters & getters

我有一对多和多对一文档中给出的相同映射文件。然后，我创建了一个小程序来获取Person实体和相应的Address实体，如下所示：

对于one-to-many：

    for (Person person : list) {
        System.out.println(person.getId());
        for (Address address : person.getAddresses()) {
            System.out.println(address);    
        }
    }

对于此休眠生成的以下查询：

Hibernate: select person0_.personId as personId1_1_ 
from Person person0_

Hibernate: select addresses0_.personId as personId1_1_0_, addresses0_.addressId as addressId2_2_0_, address1_.addressId as addressId1_0_1_ 
from PersonAddress addresses0_ 
inner join Address address1_ 
on addresses0_.addressId=address1_.addressId 
where addresses0_.personId=?

对于many-to-one：

   List<Person> list = session.createQuery("from Person").list();
            for (Person person : list) {
                System.out.println(person.getId());
                System.out.println(person.getAddress());
            }
Hibernate: select person0_.personId as personId1_1_, person0_.name as name2_1_, person0_1_.addressId as addressId2_2_ 
from Person person0_ 
left outer join PersonAddress person0_1_ 
on person0_.personId=person0_1_.personId

Hibernate: select address0_.addressId as addressId1_0_0_, address0_.name as name2_0_0_ 
from Address address0_ 
where address0_.addressId=?

从生成的查询中，one-to- many最初的查询是从Person表中获取记录以获取所有Persons，然后获取其在PersonAddress和之间具有JOIN的地址Address。

其中，作为many-to-one最初它有LEFT OUTER
JOIN之间PersonAddress并Address得到Person记录，然后将其打Address表，从获得的记录Address表。

因此，我的疑问是，为什么many-to-one案件没有one-to- many采用仅点击Person表格的相同方法，因为最初我试图仅提取HQL中的Person实体。请帮助我理解这一点。