@Data
@Entity
public class PostOneToOneBi {
    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    private Long id;

    @OneToOne(
            mappedBy = "post",
            cascade = CascadeType.ALL,
            fetch = FetchType.LAZY,
            orphanRemoval = true,
            optional = false
    )
    private PostDetailsOneBi details;
}

@Data
@Entity
public class PostDetailsOneBi {
    @Id
    private Long id;

    @OneToOne(fetch = FetchType.LAZY)
    @MapsId
    private PostOneToOneBi post;
}