Question

我可以在Embeddable类中添加多对一的映射。这里它试图获取值jobCategoryMast direclty。这是一个映射对象。

抛出异常org.postgresql.util.PSQLException：错误：列jobvaccina0_.jobcategorymast不存在

@Entity
@Table(name="job_vac",schema="cis")
@SuppressWarnings("serial")
public class JobVacc implements java.io.Serializable {


    // Fields    
     @Column(name="default", length=1)
     private String default;

     @EmbeddedId
     private JobVaccPK jobVaccinationPK;

     public JobVacc(){

     }
     //getters and setters
     }

// JobVaccPK类

@Embeddable
@SuppressWarnings("serial")
public class JobVaccPK implements Serializable{

    /*@Column(name = "job_category_id")
    private Long jobCategoryId;*/
    private JobCategoryMast jobCategoryMast;

    @Column(name = "vaccination_id")
    private Long vaccId;


    @Column(name = "screening_type_id")
    private Long screeningTypeId;


    /**
     * @return the jobCategoryMast
     */
    public JobCategoryMast getJobCategoryMast() {
        return jobCategoryMast;
    }

    /**
     * @param jobCategoryMast the jobCategoryMast to set
     */
    @ManyToOne(fetch=FetchType.LAZY)
    @JoinColumn(name="job_category_id")
    public void setJobCategoryMast(JobCategoryMast jobCategoryMast) {
        this.jobCategoryMast = jobCategoryMast;
    }
    //other setters and getters

Answer 1

根据JPA 2.0 spec：

不支持嵌入式id类中定义的关系映射。

虽然您的JPA提供商可能会支持它。

我可以在Embeddable类

1 个答案: