问题描述
我有一个Entity类，我想计算Postgresql数据库中满足某些条件的元素数。
该实体包含许多列，但我只需要一个响应即可返回所选列的计数，包括未决，已批准，未提交，已提交，已批准，未批准，正在查询...
为了避免与Postgresql驱动程序类型不匹配，我使用TypedParameterValue方法。但是，我得到一个空值作为响应，而不是查询应获取的实际值。
例如，我得到了：
{
"status": "OK","success": true,"errorCode": 0,"data": [
null
],"message": "See Data Object for Details"
代替：
"status": "OK","data": {
"approved": 1000,"totalApplications": 2000,"submitted": 560,"notSubmitted": 880,"pending": 30,"queried": 60,"notApproved": 70
},"message": "See Data Object for Details"
这是我从邮递员那里发送的请求
{
"startDate": "2014-06-11","endDate": "2020-10-14","processtypeFk":9542,"companyTypeId": 6995
}
下面是我的代码：
@PostMapping("/date-sum")
public ResponseEntity<Object> sumAnnualReturnRecordsWithDate(@RequestBody SearcherDto searcherDto) {
Long companyType = searcherDto.getCompanyTypeId();
Long processtype = searcherDto.getProcesstypeFk();
Long processtype1 = searcherDto.getProcesstypeFk1();
Long processtype2 = searcherDto.getProcesstypeFk2();
Long processtype3 = searcherDto.getProcesstypeFk3();
LocalDateTime start = LocalDateTime.of(LocalDate.from(searcherDto.getStartDate()),LocalTime.of(0,0));
LocalDateTime end = LocalDateTime.of(LocalDate.from(searcherDto.getEndDate()),LocalTime.of(23,59,59));
Query q = em.createNativeQuery("SELECT null AS id,sum(case when (IS_QUERIED = false AND SUBMITTED = true) then b.AMOUNT else null end) AS pending," +
" sum(case when (SUBMITTED = false OR SUBMITTED IS NULL) then b.AMOUNT else null end) AS notSubmitted," +
" sum(case when ( (SUBMITTED = true)) then 1 else null end) AS submitted," +
" sum(b.AMOUNT) AS totalApplications," +
" sum(case when (IS_QUERIED = true ) then b.AMOUNT else null end) AS queried," +
" sum(case when (APPROVED = true) then b.AMOUNT else null end) AS approved," +
" sum(case when (APPROVED = false) then b.AMOUNT else null end) AS notApproved " +
" FROM ANNUAL_RETURNS a " +
" LEFT JOIN PAYMENT_HISTORY b ON b.PROCESS_TYPE_FK = a.PROCESS_TYPE_FK" +
" LEFT JOIN COMPANY c ON c.id= a.COMPANY_FK " +
" WHERE (a.FINANCIAL_YEAR_END >=:startDate AND a.FINANCIAL_YEAR_END <=:endDate) AND " +
" b.PAYMENT_STATUS='APPROVED' AND (c.COMPANY_TYPE_FK=:companyTypeId OR :companyTypeId=0) " +
" AND (a.PROCESS_TYPE_FK =:processtypeFk OR " +
" (:processtypeFk1=9542 AND :processtypeFk2=9594 AND :processtypeFk3=9598)) ",AnnualReturn.class);
q.setParameter("processtypeFk",new TypedParameterValue(LongType.INSTANCE,processtype));
q.setParameter("processtypeFk1",processtype1));
q.setParameter("processtypeFk2",processtype2));
q.setParameter("processtypeFk3",processtype3));
q.setParameter("companyTypeId",companyType));
// these are never null,so we don't need to type-set them.
q.setParameter("startDate",start);
q.setParameter("endDate",end);
List <AnnualReturn> countList=q.getResultList();
return ResponseEntity.ok(new JsonResponse("See Data Object for Details",countList));
}
这是主要的Entity类：
@Entity
@Table(name="ANNUAL_RETURNS")
public class AnnualReturn implements Serializable {
private static final long serialVersionUID = 1L;
@Id
@GeneratedValue(strategy = GenerationType.IDENTITY)
@Column(name = "ID")
private Long id;
@Column(name = "IS_QUERIED")
private Boolean queried;
@Column(name = "FINANCIAL_YEAR_END")
private String financialYearEnd;
@Column(name = "FINANCIAL_YEAR_START")
private String financialYearStart;
@Column(name = "FINANCIAL_YEAR")
private String financialYear;
private Boolean approved;
@Column(name = "APPRoval_DATE")
private Date approvalDate;
@ManyToOne
@JoinColumn(name = "COMPANY_FK")
private Company company;
@ManyToOne
@JoinColumn(name = "PROCESS_TYPE_FK",referencedColumnName = "id")
private Process_Type processtype;
}
请帮助我提供想法和可能的解决方案。
解决方法
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