JPA Criteria API - LEFT OUTER JOIN 未填充 @OneToMany 列表

Question

这是我的实体：

public class Patrimony {

 @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    private Long id;

    @OneToMany(mappedBy = "patrimony")
    @JsonManagedReference 
    private
    List<Patrpos> positions;
}

我的代码是：

CriteriaBuilder cb = manager.getCriteriaBuilder();

CriteriaQuery<Patrimony> cq = cb.createQuery(Patrimony.class);
Root<Patrimony> root = cq.from(Patrimony.class);

Join<Patrimony, UserProfile> userprofile = root.join(Patrimony_.userprofile);
Join<Patrimony, Patrpos> joinPatrpos = root.join(Patrimony_.positions, JoinType.LEFT);
root.fetch(Patrimony_.positions);

joinPatrpos.on(cb.equal(joinPatrpos.get(Patrpos_.dtPatrpos), dateproc.minusDays(1)));

cq.select(root);

TypedQuery<Patrimony> query = manager.createQuery(cq);

List<Patrimony> list = query.getResultList();

正在生成的查询看起来没问题，类似于：

select
    patrimony0_.id as id1_10_0_,
    positions3_.id as id1_11_1_,
    patrimony0_.category_id as categor15_10_0_,
    patrimony0_.description as descript2_10_0_,
    patrimony0_.vl_valuation_start as vl_valu14_10_0_,
    positions3_.dt_patrpos as dt_patrp2_11_1_,
    positions3_.vl_patrpos as vl_patrp6_11_1_,
from
    patrimony patrimony0_ 
inner join
    userprofile userprofil1_ 
        on patrimony0_.userprofile_id=userprofil1_.id 
left outer join
    patrpos positions2_ 
        on patrimony0_.id=positions2_.patrimony_id 
        and (
            positions2_.dt_patrpos=?
        ) 
inner join
    patrpos positions3_ 
        on patrimony0_.id=positions3_.patrimony_id 
where userprofil1_.id=161

查询似乎返回了我需要的所有数据，实体 Patrimony 返回时所有数据都正常，但 "List positions" 属性除外，该属性始终为 null。

谢谢。

Answer 1

查看单元测试，我注意到在插入测试数据后我没有调用 flush() 和 clear()。我在调用查询之前添加了 flush 和 clear，并且所有实体都已正确填充。

谢谢大家的评论。

JPA Criteria API - LEFT OUTER JOIN 未填充 @OneToMany 列表

JPA Criteria API - LEFT OUTER JOIN not populating a @OneToMany List

java

hibernate

jpa

criteria