延迟加载的问题

延迟加载的问题

     /**
     * 根据commutype,epId查询分期项目下拉列框的值(LabelValueEx对象)按indexNo升序排列,lable对应typeName,value对应commTypeId
     *   @param   epId
     *             开发商Id
     *  @param   commutype 
     *             通讯方法String类型,分别为tysms,tyemail,tyfax
     *  @return  List
     *  @throws  BusinessProcessException
      */
      如果在查询的SQL中,用到left join fetch 查询出来的只能是一个对象,而不能是某些列 
     否则会出现没有取到延迟加载的列的错误 

     public  List getCrmCommuInfoTyFms(String epId,String commutype)  throws  BusinessProcessException {
        List dicList  =   new  ArrayList();
         if ( ! BlankUtil.isBlank(commutype))
        {        
         try  {
            String query = " select info.constValueId from SysConstValue info "
                 + "  where info.constValue=' " + commutype + " ' " ;
            Long scv = (Long)cDao.execute(query);
            String sql  =   " from CrmCommInfoType info left join fetch info.communicationTy "
                 +   "  where info.epId=' " + epId + " ' "  
                 + "  and info.communicationTy.constValueId= " + Long.parseLong(scv.toString());
            dicList  =  cDao.queryObjects(sql);
         }  catch  (Exception ex) {
             throw   new  BusinessProcessException( " getDictData_search_001 " );
         }
        }
         return  dicList;
    }

/**
     * 根据commutype,epId查询分期项目下拉列框的值(LabelValueEx对象),lable对应typeName,value对应commTypeId
     * 
     *  @param  epId
     *            开发商Id
     *  @param  commutype
     *            通讯方法String类型,分别为tysms,tyemail,tyfax
     *  @return  List
     *  @throws  BusinessProcessException
      */
    @SuppressWarnings( " unchecked " )
     public  DicSelectionModel getCrmCommuInfoTyFms(String epId, String commutype)
             throws  BusinessProcessException {
         try  {
             if  (DictionaryServ  ==   null ) {
                System.out.println( " DictionaryServ is null. " );
            }
            System.out.println( " get dicList:------>begin " );
            List dicList  =  DictionaryServ.getCrmCommuInfoTyFms(epId, commutype);
            System.out.println( " get dicList:------>end " );
            List < LabelValueEx >  labelValueList  =   new  ArrayList();
            Iterator it  =  dicList.iterator();
             //  System.out.println("*************** Iterator begin");
            labelValueList.add( new  LabelValueEx( " 请选择 " ,  0 ));
             while  (it.hasNext()) {
                CrmCommInfoType result  =  (CrmCommInfoType) it.next();
                String label  =  result.getTypeName();                                      //根据对象取到响应的列的值
                 long  value  =  result.getCommTypeId();
                LabelValueEx labelValue  =   new  LabelValueEx(label, value);
                labelValueList.add(labelValue);
            }
            DicSelectionModel dicSelectionModel  =   new  DicSelectionModel(
                    labelValueList);
             return  dicSelectionModel;
        }  catch  (Exception ex) {
             throw   new  BusinessProcessException( " getCrmCommuInfoTyFms() " );
        }
    }

 



如果没有用到延迟加载 可以返回 已知的列

    
     /**
     * 根据epId查询分析项下拉列框的值(LabelValue对象),lable对应constNameChs,value对应constName
     *   @param   epId
     *             开发商Id
     *  @return  List
     *  @throws  BusinessProcessException
      */
     public  List getAnalyseItem(String epId)  throws  BusinessProcessException {
        String sql  =   " select info.constNameChs,info.constName from SysConst info "
             +   "  where info.epId=' " + epId + " ' "
             +   "  and flag='2' " ;
        List dicList  =   new  ArrayList();

         try  {
            dicList  =  cDao.queryObjects(sql);
        }  catch  (Exception ex) {
             throw   new  BusinessProcessException( " getAnalyseItem() " );
        }
         return  dicList;
    }