I want to build a query like below using Hibernate Projections attribute. Can someone check the below. I have written java code like.
DetachedCriteria dCriteria = DetachedCriteria.forClass(FinancialYearQuater.class, "FinancialYearQuater");
dCriteria.add(Restrictions.eq("FinancialYearQuater.finYear", year));
dCriteria.addOrder(Order.asc("finYear"));
dCriteria.setResultTransformer(Projections.distinct(Projections.property("id")));
List<FinancialYearQuater> list = (List<FinancialYearQuater>) findAll(dCriteria);
Here's the SQL query:
select
distinct
this_.FINY_NAME,
this_.FINY_YEAR,
this_.QTR_NAME,
this_.QTR_NO,
this_.QTR_PERIOD
from
V_FINYR_QTR this_
where
this_.FINY_YEAR=2016
order by
this_.FINY_YEAR asc
I have written below code. Is that the correct way get the distinct data?
DetachedCriteria dCriteria = DetachedCriteria.forClass(FinancialYearQuater.class, "FinancialYearQuater");
dCriteria.add(Restrictions.eq("FinancialYearQuater.finYear", year));
ProjectionList projList = Projections.projectionList();
projList.add(Projections.property("FinancialYearQuater.finYear"), "finYear");
projList.add(Projections.property("FinancialYearQuater.finYearName"), "finYearName");
projList.add(Projections.property("FinancialYearQuater.qtrNo"), "qtrNo");
projList.add(Projections.property("FinancialYearQuater.qtrPeriod"), "qtrPeriod");
dCriteria.setProjection(Projections.distinct(projList));
dCriteria.addOrder(Order.asc("finYear"));
List<FinancialYearQuater> list = (List<FinancialYearQuater>) findAll(dCriteria);