hibernate group by

DetachedCriteria dc = DetachedCriteria.forClass(EnterpriseSummaryMonth.class);if (isNotEmpty(c.getEnterpriseId())) {dc.add(Restrictions.eq("enterpriseId", c.getEnterpriseId()));}else{if (isNotEmpty(c.getCityId())) {dc.add(Restrictions.eq("cityId", c.getCityId()));}else{if (isNotEmpty(c.getProvinceId())) {dc.add(Restrictions.eq("provinceId", c.getProvinceId()));}}}if (isNotEmpty(c.getYearMonth())) {dc.add(Restrictions.eq("yearMonth", c.getYearMonth()));}dc.setProjection(Projections.projectionList().add(Projections.max("enterpriseName"),"enterpriseName").add(Projections.min("startTime"),"startTime").add(Projections.sum("outworkerNum"),"outworkerNum").add(Projections.max("smsExpressionNum"),"smsExpressionNum").add(Projections.sum("smsNum"),"smsNum").add(Projections.sum("noticeNum"),"noticeNum").add(Projections.max("customerNum"),"customerNum").add(Projections.sum("customerVisitLogNum"),"customerVisitLogNum").add(Projections.sum("taskNum"),"taskNum").add(Projections.sum("phoneTaskNum"),"phoneTaskNum").add(Projections.sum("templateNum"),"templateNum").add(Projections.sum("travelLogNum"),"travelLogNum").add(Projections.sum("attendanceNum"),"attendanceNum").add(Projections.sum("attendPhoneNum"),"attendPhoneNum").add(Projections.sum("travelPosNum"),"travelPosNum").add(Projections.sum("locNum"),"locNum").add(Projections.sum("alarmNum"),"alarmNum").add(Projections.max("summaryTime"),"summaryTime").add( Projections.groupProperty("enterpriseId")));dc.setResultTransformer(Transformers.aliasToBean(EnterpriseSummaryMonth.class));return dao.findByPage(dc, pv);