Hi I am new to Spring Data JPA and I am wondering even though I pass the Id to the entity, the Spring data jpa is inserting instead of merge. I thought when I implement the Persistable interface and implement the two methods:
public Long getId();
public Boolean isNew();
It will automatically merge instead of persist.
I have an entity class called User like:
@Entity
@Table(name = "T_USER")
public class User implements Serializable, Persistable<Long> {
@Id
@GeneratedValue(strategy = GenerationType.AUTO)
@Column(name = "USER_ID")
private Long id;
@Column(name = "CREATION_TIME", nullable = false)
private Date creationTime;
@Column(name = "FIRST_NAME", nullable = false)
private String firstName;
@Column(name = "LAST_NAME", nullable = false)
private String lastName;
@Column(name = "MODIFICATION_TIME", nullable = false)
private Date modificationTime;
And have another class
@Entity
@Table(name = "T_USER_ROLE")
public class UserRole implements Serializable, Persistable<Long> {
@Id
@GeneratedValue(strategy = GenerationType.AUTO)
private Long roleId;
@Column(name = "ROLE_NAME")
private String userRole;
}
I have a custom repository called UserRepostory extending JpaReopistory. I am hitting the save for merge and persist as I see the implementation demonstrate that Spring Data Jpa uses above two methods to either update or insert.
@Repository
public interface UserRepository extends JpaRepository<User, Long> {
}
I have been trying to figure out but didn't get any clue. Maybe you guys can help.