我正在开发一个简单的应用程序，其中我有一个实体类Employee。现在我想从现有的Employee创建/复制一个名为ActiveEmployees的新的类似实体。我想添加功能，如果我点击新的API端点-〉POST：http：//locahost：8080/api/employee/active/john-〉因此，它应该将现有的员工John记录与所有表数据一起保存在新表active_employees中。

@Entity
@Table(name="employee")
public class Employee{

  @Id
  @GeneratedValue(strategy = GenerationType.AUTO)
  private Long id;

  @Column
  @NotNull
  private String firstNname;

  @Column
  @NotNull
  private String lastNname;

  @Column
  @NotNull
  private String department;

    @JsonManagedReference
    @OneToOne(fetch = FetchType.LAZY,
            mappedBy = "employee",
            cascade = CascadeType.ALL,
            orphanRemoval = true)
    ActiveEmployee activeEmployee;
     

... Constructor, getters and setters
}

@Entity
@Table(name="active_employees")
public class ActiveEmployees {

  @Id
  @GeneratedValue(strategy = GenerationType.AUTO)
  private Long id;
  @JsonBackReference
  @OneToOne(cascade = CascadeType.ALL,fetch = FetchType.LAZY)
  @JoinColumn(name = "employee_id")
  private Employee employee;
}