Spring Data JPA-一对一关系不获取依赖对象

Question

I have defined a one to One relationship between my objects. I have set

@OneToOne(cascade = CascadeType.ALL)

I am using CrudRepository to read the values of one the classes. However I don't want the dependent object to retrieved unless I fetch it explicitly. In the below example I don't want Order to be retrieved when I fetch customer. I guess this run an additional query in the background to fetch order details , which I want to avoid.

public Customer{

private String id;
private String fname;
@OneToOne(cascade = CascadeType.ALL)
private Order order;

}

Answer 1

Add fetch = FetchType.LAZY to the annotation

resulting in

@OneToOne(cascade = CascadeType.ALL, fetch = FetchType.LAZY)