需求,ssh框架中查询出的数据不在单一实体中,需要3表进行联合查询获取数据
在写sql后,需要进行设置别名的方式,把查询出的数据库字段与实体对应,注意,必须与实体名称相符并且区分大小写,还需要手动进行映射,否则查询数据为空
daoimpl中
public List getPlan(String mainId) { // TODO Auto-generated method stub Session session = getHibernateSession(); String sql="select distinct d.FD_ORDER ,a.FD_ID as fdPlanId,a.fd_landmark_id as fdLandmark,a.fd_cash_cate as fdCashCate ,a.FD_REC_AMOUNT AS fdReceivables ,c.fd_collected as fdCollected ,c.fd_bad_debt as fdBadDebt,c.fd_unreceivable as fdUnreceivable,b.fd_invoiced as fdInvoiced,c.fd_this_return as fdThisReturn" + " from CN_CONTRACT_PLAN a LEFT JOIN CN_INVOICE_PLAN b ON a.DOC_MAIN_ID=b.DOC_MAIN_ID LEFT JOIN CN_CASH_DETAIL c ON a.DOC_MAIN_ID=c.DOC_MAIN_ID LEFT JOIN CN_CONTRACT_LANDMARK d on a.FD_LANDMARK_ID=d.FD_ID" +" where a.DOC_MAIN_ID='"+mainId+"'"+" ORDER BY d.FD_ORDER"; //List<CnCashDetail> list=session.createSQLQuery(sql).addEntity(CnCashDetail.class).list(); List<CnCashDetail> list = (List<CnCashDetail>) session.createSQLQuery(sql) .addScalar("fdPlanId", Hibernate.STRING).addScalar("fdLandmark", Hibernate.STRING) .addScalar("fdCashCate", Hibernate.STRING).addScalar("fdReceivables", Hibernate.DOUBLE) .addScalar("fdCollected", Hibernate.DOUBLE).addScalar("fdBadDebt", Hibernate.DOUBLE) .addScalar("fdUnreceivable", Hibernate.DOUBLE) .addScalar("fdInvoiced", Hibernate.DOUBLE) .addScalar("fdThisReturn", Hibernate.DOUBLE) .setResultTransformer(Transformers.aliasToBean(CnCashDetail.class)).list(); return list; }