HQL查询抛出ExecutionException

Question

当我尝试运行HQL查询时，我收到以下异常：

java.util.concurrent.ExecutionException: javax.ejb.EJBException: 
java.lang.IllegalArgumentException: org.hibernate.QueryException: query specified join 
fetching, but the owner of the fetched association was not present in the select list

这是我正在运行的查询：

SELECT new com.airit.propworks.dto.CompanyContactReportDTO(comp, compStatus.statusDesc) 
FROM CoCompany as comp 
LEFT JOIN FETCH comp.coCompanyCategoriesCompanyNumbers as compCat 
LEFT JOIN FETCH comp.coContactCompanyNumbers as compCont 
LEFT JOIN FETCH comp.coOperatingNamesCompanyNumbers 
LEFT JOIN compCat.categoryFunctionCoCategoryList as compFcn 
LEFT JOIN FETCH compCont.coContactDocumentssCompositeFK1 as contDoc 
LEFT JOIN FETCH compCont.coContactJobssCompositeFK1 as contJob 
LEFT JOIN FETCH compCont.coPhoneNumberssCompositeFK1 
LEFT JOIN FETCH contDoc.documentTypeCoDocumentTypes as docTypes 
LEFT JOIN FETCH contJob.contactFunctionCoContactFunctions as contFcn 
LEFT JOIN comp.companyStatusCoCompanyStatuses as compStatus --this was added by me
WHERE comp.companyNumber = ? ORDER BY comp.companyName

我添加了第二个到最后一行，并且我添加了构造函数。直到我添加了那些我开始获得异常的行。

正如您所看到的，引用comp.companyStatusCoCompanyStatuses的倒数第二行是一个返回单个CoCompanyStatuses对象的连接，然后我尝试从中获取statusDesc字符串并传递给构造

我不确定是什么导致了我得到的异常。你们看到了什么吗？

Answer 1

使用select new与join fetch结合使用opened bug。

由于问题在于添加了select new，您可以将检索与构建CompanyContactReportDTO分开。