Question

我想在同一实体中添加两个数字。这是正确的还是如何做到的？

@Data
@Entity
public class Product {
@Id
private Integer productId;
private String productName;
private Integer noOfUnits;
private Double cartonPrice;
@Transient
private Double unitPrice=cartonPrice-noOfUnits;
}

Answer 1

不，这不是正确的处理方法！您应该根据需要在哪个控制器中计算出unitPrice字段并将其保存在数据库中，在服务类中进行所有这些操作。

Answer 2

SELECT eps.PROPOSAL_NUMBER, eps.TITLE, per.FULL_NAME, ext.NRP_IREF_CD, ext.RESEARCH_TYPE_CD, 
   nsf.NSF_CODE, ext.NPS_THRUST_DESCRIPTION,
   CASE
        WHEN OPTION_1 = 'Y' THEN 'Option 1'
        WHEN OPTION_2 = 'Y' THEN 'Option 2'
        WHEN OPTION_3 = 'Y' THEN 'Option 3'
        WHEN OPTION_4 = 'Y' THEN 'Option 4'
        WHEN OPTION_5 = 'Y' THEN 'Option 5'
        WHEN OPTION_6 = 'Y' THEN 'Option 6'
        WHEN OPTION_7 = 'Y' THEN 'Option 7'
        WHEN OPTION_8 = 'Y' THEN 'Option 8'
        WHEN OPTION_9 = 'Y' THEN 'Option 9' 
        WHEN OPTION_0 = 'Y' THEN 'Not Applicable'
        ELSE ''
   END ONR,       
   abs.ABSTRACT_DETAILS,
   k.keywords
FROM EPS_PROPOSAL eps
LEFT JOIN EPS_PROPOSAL_EXT_T ext
    ON eps.PROPOSAL_NUMBER = ext.PROPOSAL_NUMBER
LEFT JOIN EPS_PROP_PERSON per
    ON eps.PROPOSAL_NUMBER = per.PROPOSAL_NUMBER AND
      (per.PROP_PERSON_ROLE_ID = 'PI' OR per.PROP_PERSON_ROLE_ID = 'PD')
LEFT JOIN EPS_PROP_ABSTRACT abs
    ON eps.PROPOSAL_NUMBER = abs.PROPOSAL_NUMBER
LEFT JOIN NSF_CODES nsf
    ON eps.NSF_CODE = nsf.NSF_SEQUENCE_NUMBER    
OUTER APPLY(
   SELECT 
      LISTAGG(sk.DESCRIPTION, ', ') WITHIN GROUP (ORDER BY sk.DESCRIPTION) AS KEYWORDS 
   FROM EPS_PROP_SCIENCE_KEYWORD key 
   LEFT JOIN SCIENCE_KEYWORD sk
       ON key.SCIENCE_KEYWORD_CODE = sk.SCIENCE_KEYWORD_CODE
   WHERE eps.PROPOSAL_NUMBER = key.PROPOSAL_NUMBER
) k
WHERE eps.OWNED_BY_UNIT = '401' AND eps.requested_start_date_initial >= DATE '2019-10-01';

使用此功能可以进行此计算。

如何在同一模型中将两个属性相乘并将其转换为另一个属性

2 个答案: