JPA映射关系实体parentID

这与两个不同实体之间的关系没有区别。下面是一个例子:

class CompanyDivision {

    @OneToMany(mappedBy = "parentDivision")
    private Set<CompanyDivision> childDivisions = new HashSet<CompanyDivision>();

    @ManyToOne
    @JoinColumn(name = "FK_PARENT_DIVISION")
    private CompanyDivision parentDivision;
}