Aspect Ratio of a JPA Object

Question

can someone help me understand how I can define an object with a JPA mapping that has a relationship with it?

For example, my entity is CompanyDivision, divA contains division B, splitC and division B contains division B1, division B2

• divisionA
  • divisionB
    • divisionB1
    • divisionB2
  • divisionC

Thanks!

Answer 1

It is no different from the relationship between two different entities. Here is an example:

class CompanyDivision { @OneToMany(mappedBy = "parentDivision") private Set<CompanyDivision> childDivisions = new HashSet<CompanyDivision>(); @ManyToOne @JoinColumn(name = "FK_PARENT_DIVISION") private CompanyDivision parentDivision; }