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Question

我有一个如下所示的表模型：

@Entity
@Table(name="RULEADMIN_QUESTIONNAIRE")
public class Questionnaire {

    @Id
    @GeneratedValue(strategy=GenerationType.AUTO)
    @Column(name = "QUESTID")
    private long questionID;

    @Column(name = "QUESTION")
    private String question;

    @GeneratedValue(strategy=GenerationType.AUTO)
    @Column(name = "QUESTORDER")
    private long questionOrder;

    @Column(name = "QUESTCATEGORYID")
    private long questionCatgoryID;

    @Column(name = "QUESTREFERENCESTRING")
    private String questionReferenceString;

    @Column(name = "ACTIVEFLAG")
    private long activeFlag;

    @Column(name = "LASTMODUSERID")
    private long lastModifiedUserID;

    @Column(name = "LASTMODDATE")
    private Date lastModifiedDate;

    @OneToMany(cascade=CascadeType.ALL)
    @JoinColumn(name="QUESTID")
    @Transient
    private List<QuestionAnswerOption> questionAnswerOptions;

        public Questionnaire() {
    }
       .....list of setters and getters
}

这里 QUESTID 和 QUESTORDER 将具有相同的值，QUESTID 将自动生成。但我也希望 QUESTORDER 具有相同的值，因为两者都具有相同的值。我尝试通过注释 @GenerateValue(strategy=GenerationType.AUTO) 但它没有获取值。我怎样才能将 QUESTID 获取到 QUESTORDER？

Answer 1

这没有多大意义，如果有一个令人信服的理由（一些依赖的遗留代码？）有两个相同的字段，我会这样做：

@Id
@GeneratedValue(strategy=GenerationType.AUTO)
@Column(name = "QUESTID")
private long questionID;

public long getQuestionId(){
  return this.questionID;
};

public long getQuestionOrder(){
  return getQuestionID();
};