如何解决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
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;
}
解决方法
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。
,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。
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