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我想要3个java类的对象之间的单向一对一关系:Person to Heart,Person to Liver.我希望对象共享相同的PK,即每个人都有相应的心脏和肝脏,其中person.person_id = heart.heart_id = liver.liver_id.我不想将3个表合并为1,因为每个表都有很多字段.这是我的代码(主要基于此问题的接受答案):

@Entity
public class Person {
   public long personId;
   private String name;
   public Heart heart;
   public Liver liver;
   // other fields

   @Id
   @GeneratedValue
   public long getPersonId() {return personId;}

   @OneToOne(cascade = CascadeType.ALL)
   @PrimaryKeyJoinColumn
   public Heart getHeart() {return heart;}

   @OneToOne(cascade = CascadeType.ALL)
   @PrimaryKeyJoinColumn
   public Liver getLiver() {return liver;}

   // other getters and setters and constructors
}


@Entity
public class Heart {
   private long heartId;
   private int bpm;
   private Person person; …