I have this error when I try to save a data to a table. I know there are a bunch of questions like mine, but none of them are really describing the problem I have.
I am using Annotations and mark my classes as Entities. Here is the error I have.
@OneToOne or @ManyToOne on hibernate_test.entity.Employee.detail references an unknown entity.
And two Entities ( getters, setters and consturctors are omitted for more readable code ( they are created by IDEA anyway)
First:
@Entity
@Table(name = "details")
public class Detail {
@Id
@GeneratedValue(strategy = GenerationType.IDENTITY)
@Column(name = "id")
private int id;
@Column(name = "city")
private String city;
@Column(name = "phone_number")
private String phoneNumber;
@Column(name = "email")
private String email;
And second
@Entity
@Table(name="employees")
public class Employee {
@Column(name = "id")
@Id
@GeneratedValue(strategy = GenerationType.IDENTITY)
private int id;
@Column(name = "name")
private String name;
@Column(name = "surname")
private String surname;
@Column(name = "department")
private String department;
@Column(name = "salary")
private int salary;
@OneToOne(cascade = CascadeType.ALL)
@JoinColumn(name = "details_id")
private Detail detail;
And my main method
SessionFactory sessionFactory = new Configuration()
.configure("hibernate.cfg.xml")
.addAnnotatedClass(Employee.class)
.buildSessionFactory();
try {
Session session = sessionFactory.getCurrentSession();
Employee employee = new Employee("Mark", "Bulkovsky", "PR", 5324);
Detail detail = new Detail("Munich", "189432132", "John@gmail.com");
employee.setDetail(detail);
session.beginTransaction();
session.save(employee);
session.getTransaction().commit();
} finally {
sessionFactory.close();
}
I am feeling desperate as I've been trying to solve this problem and none of the Stackoverflow answers helped me. I wonder if the problem can be connected with incorrectly created tables. So I have a screen of mine. I do appreciate your help a lot!
Try to correct your SessionFactory
definition in this way:
SessionFactory sessionFactory = new Configuration()
.configure("hibernate.cfg.xml")
.addAnnotatedClass(Employee.class)
.addAnnotatedClass(Detail.class)
.buildSessionFactory();
The problem was in Main method. You should always add annotated class. .addAnnotatedClass(Detail.class)
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