Group by month with criteria in Hibernate

Question

I\'m trying to get a report using Criteria and ProjectionList, and I\'m pretty new using this through hibernate. So I have this model:

private Long _userId;         


        

Answer 1

You can use an SQLQuery in hibernate, here is an example:

 public List groupByMonth(ChartRequest request){

   SQLQuery query = getSession().createSQLQuery("SELECT \n" +
        "sum(this_.amount) as amount, \n" +
        "extract(month from this_.fecha) as month, \n" +
        "extract(year from this_.fecha) as  year\n" +
        "FROM jornada this_ \n" +
        "GROUP BY \n" +
        "month, \n" +
        "year \n" +
        "ORDER BY \n" +
        "year asc, \n" +
        "month asc");

      query.setResultTransformer(Transformers.aliasToBean(MonthlyPoint.class));
      return query.list();
}


public class MonthlyPoint {
    private Double year;
    private Double month;
    private Double amount;
  //-- getters and setters here --
}