英文:
How do I Return Null Value of an Entity in Java/Hibernate
问题
所以我正在尝试在数据库中为位置（position）返回一个空值，因为我在我的代码中正在创建一个员工存档（Employee archive）。
我想知道如何在使用Hibernate/Java/Springboot时，为数据库中的POS_IDX返回一个空值。
public class EmployeeEntity {
@Id
@Column(name = "EMP_IDX")
private Long id;
@OneToOne(cascade = CascadeType.PERSIST)
@JoinColumn(name = "POS_IDX", referencedColumnName = "POS_IDX")
private PositionEntity position;
}
英文:
So I'm trying to return a null value for position in the database because I am creating an Employee archive in my code.
I was wondering how do I return a null value for POS_IDX in the database using Hibernate/Java/Springboot.
public class EmployeeEntity{
@Id
@Column(name = "EMP_IDX")
private Long id;
@OneToOne(cascade = CascadeType.PERSIST)
@JoinColumn(name = "POS_IDX", referencedColumnName = "POS_IDX")
private PositionEntity position;
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