如何为这个SQL查询编写Hibernate Criteria？

我有一个像这样的查询

询问

SELECT attendance_entry.roll_no,attendance_entry.absent_date,attendance_entry.absent_status,attendance_entry.leave_status,attendance_entry.od_status FROM attendance,attendance_entry WHERE attendance.class_id='"+classId+"' && attendance.section_id='"+sectionId+"' && attendance_entry.absent_date= STR_TO_DATE('"+date+"','%a %b %d %H:%i:%s IST %Y') GROUP BY attendance_entry.roll_no"; 

我需要为Parse Json写标准

我尝试了以下Criteria

 Criteria cr = getSession().createCriteria(AttendanceEntry.class) .setProjection(Projections.projectionList() .add(Projections.property("rollno"),"rollno") .add(Projections.property("absent"),"absent") .add(Projections.property("leave"),"leave") .add(Projections.property("od"),"od") .add(Projections.groupProperty("rollno"),"rollno")) .add(Restrictions.eq("attendance.classYear.id", classId)) .add(Restrictions.eq("attendance.section.id", sectionId)) .add(Restrictions.eq("absentDate", date)) .setResultTransformer(Transformers.aliasToBean(AttendanceEntry.class)); return cr.list(); 

我有以下错误

错误

  could not resolve property: attendance.classYear.id of: com.technofolks.model.AttendanceEntry; nested exception is org.hibernate.QueryException: could not resolve property: attendance.classYear.id of: com.technofolks.model.AttendanceEntry 

我已将考勤和参赛作为onetomany和manytoone。 如何编写标准查询？

Answer 1

此Criteria适用于我的MySQL查询

 @Override @Transactional @SuppressWarnings("unchecked") public List getAttendanceByDateSearch(String classId, String sectionId, Date date) { Criteria cr = getSession().createCriteria(AttendanceEntry.class,"attendanceEntry") .createAlias("attendanceEntry.attendance","attendance") .setProjection(Projections.projectionList() .add(Projections.property("rollno"),"rollno") .add(Projections.property("absent"),"absent") .add(Projections.property("leave"),"leave") .add(Projections.property("od"),"od") .add(Projections.property("absentDate"),"absentDate") .add(Projections.groupProperty("rollno"),"rollno")) .add(Restrictions.eq("attendance.classYear.id", classId)) .add(Restrictions.eq("attendance.section.id", sectionId)) .add(Restrictions.eq("absentDate", date)) .setResultTransformer(Transformers.aliasToBean(AttendanceEntry.class)); return cr.list(); }