Created
December 10, 2017 14:36
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import javax.persistence.CascadeType; | |
import javax.persistence.Entity; | |
import javax.persistence.FetchType; | |
import javax.persistence.GeneratedValue; | |
import javax.persistence.Id; | |
import javax.persistence.OneToOne; | |
import javax.persistence.PrimaryKeyJoinColumn; | |
import javax.persistence.Table; | |
@Table | |
@Entity | |
public class EntityA | |
{ | |
@Id | |
@GeneratedValue | |
private long id; | |
@OneToOne(cascade = CascadeType.ALL, fetch = FetchType.EAGER) | |
@PrimaryKeyJoinColumn | |
private EntityB entityB; | |
} |
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import javax.persistence.Column; | |
import javax.persistence.Entity; | |
import javax.persistence.Id; | |
import javax.persistence.JoinColumn; | |
import javax.persistence.MapsId; | |
import javax.persistence.OneToOne; | |
import javax.persistence.Table; | |
@Table | |
@Entity | |
public class EntityB | |
{ | |
@Id | |
@Column(name = "a_id") | |
private Long id; | |
@MapsId | |
@OneToOne(mappedBy = "entityB") | |
@JoinColumn(name = "a_id") | |
private EntityA entityA; | |
} |
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