使用条件和限制的休眠加入

java hibernate hibernate-criteria

2022-09-04 21:15:06

我有 2 个实体作为

支付标题.java

@Entity
public class PayoutHeader extends GenericDomain implements Serializable {

    @Id
    @GeneratedValue(strategy = GenerationType.AUTO)
    private Long id;        
    @Column
    private Integer month;
    @Column
    private Integer year;
    @OneToOne
    private Bank bank;
    @Column
    private Double tdsPercentage;
    @Temporal(javax.persistence.TemporalType.DATE)
    private Date **chequeIssuedDate**;

    @Temporal(javax.persistence.TemporalType.DATE)
    private Date entryDate;

}

支付详情.java

@Entity
public class PayoutDetails {

    @Id
    @GeneratedValue(strategy = GenerationType.AUTO)
    private Long id;        

    @ManyToOne
    private PayoutHeader payoutHeader;

    @Column
    private Double amount;
    @Column
    private String bankName;
    @Temporal(javax.persistence.TemporalType.DATE)
    private Date clearingDate;
    @OneToOne    
    private Advisor advisor;

    @Column
    private Long **advisorId**;
}

我想使用休眠条件编写查询，例如

Select pd.* from PayoutDetails pd, PayoutHeader ph where pd.payoutheaderId = ph.id and pd.advisorId = 1 and and ph.chequeIssuedDate BETWEEN STR_TO_DATE('01-01-2011', '%d-%m-%Y') AND STR_TO_DATE('31-12-2011', '%d-%m-%Y') ";

我写了这样的查询

public List<PayoutDetails> getPayoutDetails(AdvisorReportForm advisorReportForm) {
        Criteria criteria = getSession().createCriteria(PayoutDetails.class);

        if (advisorReportForm.getAdvisorId() != null && advisorReportForm.getAdvisorId() > 0) {
            criteria.add(Restrictions.eq("advisorId", advisorReportForm.getAdvisorId().toString()));
        }

        criteria.setFetchMode("PayoutHeader", FetchMode.JOIN)
                .add(Restrictions.between("chequeIssuedDate", advisorReportForm.getFromDate(), advisorReportForm.getToDate()));        

        return criteria.list();
    }

但给出错误是

org.hibernate.QueryException：無法解析屬性： checkqueIssuedDate of： org.commission.domain.payout.PayoutDetails

我认为是试图在中找到字段，但是这个字段在.如何在加入过程中指定别名？chequeIssuedDatePayoutDetailsPayoutHeader

答案 1

just 指定您希望通过联接获取标头，在这种情况下，可能不需要。它不会更改限制中使用的表。为此，您可能希望创建其他条件或别名，大致如下所示：criteria.setFetchMode("PayoutHeader", FetchMode.JOIN)

public List<PayoutDetails> getPayoutDetails(AdvisorReportForm advisorReportForm) {
        Criteria criteria = getSession().createCriteria(PayoutDetails.class);

        if (advisorReportForm.getAdvisorId() != null && advisorReportForm.getAdvisorId() > 0) {
            criteria.add(Restrictions.eq("advisorId", advisorReportForm.getAdvisorId().toString()));
        }

        criteria.createCriteria("payoutHeader")
                .add(Restrictions.between("chequeIssuedDate", advisorReportForm.getFromDate(), advisorReportForm.getToDate()));        

        return criteria.list();
    }

或（使用别名）

public List<PayoutDetails> getPayoutDetails(AdvisorReportForm advisorReportForm) {
        Criteria criteria = getSession().createCriteria(PayoutDetails.class);

        if (advisorReportForm.getAdvisorId() != null && advisorReportForm.getAdvisorId() > 0) {
            criteria.add(Restrictions.eq("advisorId", advisorReportForm.getAdvisorId().toString()));
        }

        criteria.createAlias("payoutHeader", "header")
                .add(Restrictions.between("header.chequeIssuedDate", advisorReportForm.getFromDate(), advisorReportForm.getToDate()));        

        return criteria.list();
    }

有关此内容的示例，请参阅有关条件查询的休眠文档。

将转换为字符串也可能不合适，因为它实际上是一个，并且可能映射到sql中的数字字段。advisorIdLong

如果映射，并且使用基于字段的限制，则通常根本不映射与此字段类似的内容，这与处理字段的方式类似。advisorIdadvisoradvisorpayoutHeader

我不会担心从标头中获取所有字段，但是如果您让版本正常工作，它的行为可能会有所不同。createCriteria

答案 2