I try to cascade persist two entities: Salon (parent) and Subscription with a bidirectional @OneToOne association. The Entities' code is following:
{code:java}
@Entity
public class Salon {
@Id
@GeneratedValue(strategy = GenerationType.SEQUENCE, generator = "custom_sequence")
@SequenceGenerator(name = "custom_sequence", sequenceName = "custom_sequence", allocationSize = 1)
@Column(nullable = false)
private Long id;
@OneToOne(mappedBy = "salon", cascade = CascadeType.ALL, orphanRemoval = true)
private Subscription subscription;
}
{code}
and
{code:java}
@Entity
public class Subscription {
@Id
private Long id;
@OneToOne
@MapsId
private Salon salon;
}
{code}
I try to persist newly created Salon object with newly created Subscription object set to the Salon.
This is the code snippet:
{code:java}
@Test
public void test() {
Salon salon = generateRandomSalon();
Subscription subscription = new Subscription();
salon.setSubscription(subscription);
salonService.save(salon);
}
{code}
And as a result I get "org.hibernate.id.IdentifierGenerationException: attempted to assign id from null one-to-one property [my.project.subscription.Subscription.salon]"
what inicates that Hibernate tries to persist Subscription entity before before persisting Salon entity.
I'm using Hibernate 5.2.17. |
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