Roo Relationship 구현하기

1. ManyToOne

    add field reference

2. OneToMany

    add field set

3. ManyToOne Relationship 구현 방법

Order와 LineItem 경우를 예로 들어보자.

   ENTITY: Order            ENTITY: LineItem

   Set<LineItem> items      Order order

add field set jpa -fieldName items -class Order -element LineItem -mappedBy order

add field reference jpa -fieldName order -class LineItem -type Order -notNull

4. ManyToMany Relationship 구현 방법

n:m relationship을 구현하기 위해서는 3개의 테이블이 필요하다.

Order와 OrderLine이 n:m인 경우

Order

    - OneToMany-> OrderOrderLine

OrderOrderLine

    -orders: @ManyToOne->Order

    -orderlines: @ManyToOne->OrderLine

OrderLine

    -OneToMany->OrderOrderLine

5. Inheritance 구현 방법
new persistent class jpa -name ~.domain.AbstractPerson -abstract
new persistent class jpa -name ~.domain.Vet -extends ~.domain.AbstractPerson -testAutomatically