我有一个自反关联的表：
容器可以关联到父级（列 container_id）。容器可以将容器作为子容器。
@Entity
public class Container implements Serializable {
@ManyToOne
@JoinColumn(name = "container_id", nullable = true, referencedColumnName = "original_id")
private Container containedIn;
@Column(name = "original_id")
private long originalId;
@OneToMany(mappedBy = "containedIn")
private List<Container> contains = new ArrayList<>();
...
问题：
生成的请求是：
Hibernate: select * from (
select *
from container con0_, container con1_
where con0_.container_id=con1_.original_id
order by con1_.code ) where rownum <= ?
我期待左外连接的地方：
from container con0_ left outer join container con1_
on con0_.container_id=con1_.original_id.
没有父容器（根盒 CON0000007）的容器不会被检索，因为左连接不是由 Hibernate 生成的：
身份证 | ORIGINAL_ID| 代码 | 类型 | CONTAINER_ID（父）
1 | 2 | CON000000002 | 包装 | 12
2 | 4 | CON000000004 | 包装 | 10
4 | 6 | CON000000006 | 包装 | 11
5 | 8 | CON000000008 | 包装 | 10
7 | 10 | CON0000002 | 盒子 | 15
8 | 11 | CON0000003 | 盒子 | 15
9 | 12 | CON0000004 | 盒子 | 15
12 | 15 | CON0000007 | 根盒 | 无效的