Question

我必须同时更新三个表。当我从邮递员那里命中时，所有表都被成功保存，但是当我尝试更新时，它会引发catch异常，例如同一实体的多种表示形式。

员工详细信息

public class EmployeeDetails implements Serializable{   
@Id 
@GeneratedValue(strategy = GenerationType.IDENTITY) 
@Column(name = "user_id", unique = true, length = 11, nullable = false) 
private Integer userId;         
    //other variable

@OneToOne(mappedBy="user",cascade =  CascadeType.ALL)   
private EmployeeAdditionalinfo userAdditionalInfo;
@OneToMany(mappedBy="user",cascade = CascadeType.ALL)
private Set<EducationDetails> educationDetail;
 //getter and setter
}

EmployeeAdditionalinfo

public class EmployeeAdditionalinfo {
@Id
@GeneratedValue(strategy = GenerationType.IDENTITY)
@Column(name = "user_additional_info_id", unique = true, length = 11, nullable = false)
private Integer userAdditionalInfoId;

//other variable
@ManyToOne(cascade=CascadeType.ALL)
@JoinColumn(name = "user_id")
private EmployeeDetails user;

@OneToOne(cascade=CascadeType.ALL)
@JoinColumn(name = "address_id")
private EmployeeAddress address;
//getter or setter }

教育详情

public class EducationDetails {
@Id
@GeneratedValue(strategy = GenerationType.IDENTITY)
@Column(name = "s_no", unique = true, length = 10, nullable = true)
private Integer sno;

//variable
@ManyToOne(cascade=CascadeType.ALL)
@JoinColumn(name = "user_id")
private EmployeeDetails user;

//getter and setter }

错误

org.springframework.dao.InvalidDataAccessApiUsageException：同一实体的多个表示形式[com.icore.Payroll.Attendance.Entity.EmployeeDetails＃379]正在合并。分离：[EmployeeDetails [userId = 379，userName =用户名，firstName = Ganesh1，lastName = Babu，middleInitial = Middle，email = Email，password = passwo，......]]

Answer 1

我认为您只能在关系的一侧配置级联。

当前，由于EmployeeDetails实体内部的级联配置，您正在触发从EducationDetails到EmployeeDetails的集合的所有类型的级联，然后又返回到EducationDetails。 >

这是有道理的，因为该错误表明我们对同一实体有两种不同的表示（实例），一种在您要刷新的持久性上下文内，另一种在上一次级联期间获取。

您可以尝试删除最后一个配置，并最终手动对其进行管理。

Spring Boot中同一实体的多种表示

1 个答案: