如何在基於Annotation的Hibernate的相同表中將主鍵作爲外鍵？

Question

在我的Hibernate的註解基於應用程序......我在創建表這樣的..

CREATE TABLE IF NOT EXISTS `EC_USER` (
    `S_ID` VARCHAR(30) NOT NULL PRIMARY KEY, 
`CREATED_DATE` DATETIME NULL , 
`MODIFIED_BY` VARCHAR(30) NULL , 
CONSTRAINT `CREATED_BY` 
    FOREIGN KEY (`CREATED_BY`) 
    REFERENCES `EC_USER` (`S_ID`) 
    ON DELETE NO ACTION 
    ON UPDATE NO ACTION, 
    CONSTRAINT `MODIFIED_BY` 
    FOREIGN KEY (`MODIFIED_BY`) 
    REFERENCES `EC_USER` (`S_ID`) 
    ON DELETE NO ACTION 
    ON UPDATE NO ACTION) 

那麼如何寫我的Hibernate豆...

@Entity 
@Table(name = "EC_USER") 
public class UserVO{ 
@Id 
@Column(name="S_ID") 
private String id; 
@Column(name = "CREATED_DATE") 
private Date createdDate; 
@Column(name = "LAST_MODIFIED_DATE") 
private Date modifiedDate; 
} 

因此，這是正確的或任何關係映射所需...

Answer 1

假設有一個CREATED_BY和MODIFIED_BY列你可以寫

@Entity 
@Table(name = "EC_USER") 
public class UserVO{ 
@Id 
@Column(name="S_ID") 
private String id; 
@Column(name = "CREATED_DATE") 
private Date createdDate; 
@Column(name = "LAST_MODIFIED_DATE") 
private Date modifiedDate; 

@ManyToOne 
@JoinColumn(name="created_by") 
private UserVO createdBy; 


@ManyToOne 
@JoinColumn(name="modified_by") 
private UserVO modifiedBy; 

}