休眠關係

Question

我有一個像下面的表格模型：

@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 
} 

這裏QUESTID和QUESTORDER將具有相同的價值，QUESTID會得到自動生成的。但是我也希望QUESTORDER的值相同，因爲兩者都具有相同的值。我嘗試了註釋@GeneratedValue(strategy=GenerationType.AUTO)，但它沒有獲得價值。我怎樣才能得到QUESTID到QUESTORDER呢？

Answer 1

這沒有多大意義，如果有一個令人信服的理由有兩個字段是相同的我會做這樣的（一些相關的遺留代碼）：

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

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

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