Question

我希望使用InheritanceType.JOINED将超类和子类存储在数据库中。但每当我尝试这样做时，我都会收到错误 - Repeated column in mapping for entity: com.inqool.personalpro.entity.QuestionAlgorithm column: id (should be mapped with insert="false" update="false") 这是我的实体：

@Entity
@Inheritance(strategy=InheritanceType.JOINED)
public class Question implements Serializable {

    private Long id;

    @Id
    @GeneratedValue
    public Long getId() {
        return id;
    }
    public void setId(Long id) {
        this.id = id;
    }
    ...
}

@Entity
@PrimaryKeyJoinColumn(name="id")
public class QuestionAlgorithm extends Question {

    private Long id;

    public Long getId() {
        return id;
    }
    public void setId(Long id) {
        this.id = id;
    }
    ...
}

当我从子类中删除字段'id'时，我收到此错误：Could not locate table which owns column [id] referenced in order-by mapping

任何想法？感谢。

Answer 1

问题出在hibernate的版本中。在4.1.7中，这是错误的。我将版本更改为4.1.4，一切正常

java hibernate - 使用InheritanceType.JOINED复制列

1 个答案: