jpa随笔

1对多的关系

//多的一方
@Entity
@Table(name="car_distribute")
public class DistributeCar extends CustomBaseEntity implements LogicDeleteable {
	private static final long serialVersionUID = 1L;

	@ManyToOne (fetch = FetchType.LAZY)
	@JoinColumn(name="approval_for_car_id")
	private ApprovalForCar approvalForCar;

@Entity
@Table(name = "CAR_APPROVAL")
public class ApprovalForCar extends CustomBaseEntity implements LogicDeleteable {
	private static final long serialVersionUID = 1L;

	//派车单
	@JsonIgnore
	@OneToMany(cascade = CascadeType.ALL,fetch = FetchType.LAZY,mappedBy = "approvalForCar")
	private List<DistributeCar> distributeCars =new ArrayList<>(0);