Hibernate Mapping Exception : Repeated column in mapping for entity

Question

There is a mapping exception for a particular entity. Cant figure out from where the problem is arising. I checked all the mappings 3 times from start to end. Still i am get

Answer 1

For those who are using annotations to solve this, the classes should look like this:

@Entity
public class Email {

    @Id
    @GeneratedValue(strategy=GenerationType.SEQUENCE)
    private int intEmailID;

    @Column(insertable = false, updatable = false)
    private int employeeId;

    @ManyToOne
    private EmailType emailType;

    @ManyToOne
    @JoinColumn(name="employeeId")
    private Employee employee;

    // Getters and Setter
}


@Entity
public class Employee {

    @Id
    private int id;

    @OneToMany(cascade = {CascadeType.ALL}, mappedBy="employeeId")
    @PrimaryKeyJoinColumn
    private List<Email> emailList;

    public void setEmailList(List<Email> emailList) {
        this.emailList = emailList
    }

    public List<Email> getEmailList() {
        return emailList;
    }

    // Rest of getters and setters

}

Answer 2

I think you have mapped Employee to Email using oneToMany relation. If yes its nothing wrong but you have to make sure you can insert and update only in one direction

should be mapped with insert="false" update="false" in Employee

Answer 3

have you set the collection in Employee as inverse?

<bag name="emails" inverse="true">
  <key column="EMPLOYEE_ID" not-null="true">
  ...
</bag>