Hibernate 一个到复合主键jpa之间的映射

我有一个用例，两个表有复合主键，一个表和数据库中的另一个表有关系，如何在程序级获得这种关系，如何声明bean类

//表项目的复合主键

    @Embeddable
    @Data
    public class ProjectId implements Serializable {

        private static final long serialVersionUID = 12233365L;

        @Column(name = "PROJECT_CODE")
        private Integer pCode;

        @Column(name = "BOL")
        private String bol;

        @Column(name = "BOLS")
        private String bols;

        @Column(name = "EID")
        private Integer eId;

    }

//项目类

public class Project implements Serializable {

    private static final long serialVersionUID = 748569L;

    @EmbeddedId
    private ProjectId projectId;

    @Column(name = "UPDATED_DATE")
    private Date updatedDate;

    @Column(name = "CREATED_DATE")
    private Date createdDate;

}

//pcode、bol、bol、eId是复合键

//文档表，这里是项目之间更有趣的关系，文档是“pcode、bol、bols、eId+did”

//文件表

@Entity
@Table(name = "DOCUMENT")
@Data
public class Documents implements Serializable {

    private static final long serialVersionUID = 14578523695L;

    @EmbeddedId
    private DocumentId documentId;

    @Column(name = "JUR")
    private String jur;

    @Column(name = "DSEQUENCE")
    private Integer dSequence;

    @Column(name = "UPDATED_DATE")
    private Date updatedDate;

    @Column(name = "CREATED_DATE")
    private Date createdDate;

}

两表文档之间的关系是项目的子表，
我想做一个从项目方面的关系。 从文档到项目也可以

如何映射表之间的一对一关系

文件表应包含项目实体的关键列（pCode、bol等）

在文档类中添加此成员：

@OneToOne
@JoinColumns({@JoinColumn(name = "pCode", referencedColumnName = "PROJECT_CODE"),
              @JoinColumn(name = "bol", referencedColumnName = "BOL"),
              @JoinColumn(name = "bols", referencedColumnName = "BOLS"),
              @JoinColumn(name = "eid", referencedColumnName = "EID")})
@MapsId("projectId")
private Project project;

---

谢谢你的回答，有可能从项目一方谈恋爱吗？是的，另一方也一样。确保在项目表中添加DocumenId列

@OneToOne
@JoinColumns({@JoinColumn(name = "pCode", referencedColumnName = "PROJECT_CODE"),
              @JoinColumn(name = "bol", referencedColumnName = "BOL"),
              @JoinColumn(name = "bols", referencedColumnName = "BOLS"),
              @JoinColumn(name = "eid", referencedColumnName = "EID")})
@MapsId("projectId")
private Project project;