JPA에서 버전이 지정된 데이터 항목에 대한 복합 기본 키를 구현하는 방법은 무엇입니까?

<code class="java">@Embeddable
public class MyKey implements Serializable {

    @Column(name = "Id", nullable = false)
    private int id;

    @Column(name = "Version", nullable = false)
    private int version;

    // Getters and setters
}</code>

<code class="java">@Entity
public class YourEntity {

    @EmbeddedId
    private MyKey myKey;

    @Column(name = "ColumnA")
    private String columnA;

    // Getters and setters
}</code>

<code class="java">@Entity
@IdClass(MyKey.class)
public class YourEntity {

    @Id
    private int id;

    @Id
    private int version;

    // Getters and setters
}</code>

<code class="java">public class MyKey implements Serializable {

    private int id;
    private int version;

    // Getters and setters
}</code>