HQL多种查询实现

1、返回int

    public int countByUsername(String username) {
        String hql = "select count(*) from BeanCarUser bean where bean.userName=:username";
        Query query = getSession().createQuery(hql);
        query.setParameter("username", username);
        return ((Number) query.iterate().next()).intValue();
    }

2、返回list集合

@SuppressWarnings("unchecked")
    public List<CmsZfysj> findByZqmj(String zqmj, Date clsj) {
        Finder f = Finder.create("from CmsZfysj bean where 1=1 ");
        if (null != zqmj && !"".equals(zqmj)) {
            f.append(" and bean.police_id like :zqmj");
            f.setParam("zqmj", "%" + zqmj + "%");
        }
        if (null != clsj && !"".equals(clsj)) {
            SimpleDateFormat df = new SimpleDateFormat("yyyy-MM-dd");
            f.append(" and TO_CHAR(bean.import_time,'yyyy-MM-dd') >= '"
                    + df.format(clsj) + "'");
        }
        if (null != clsj && !"".equals(clsj)) {
            SimpleDateFormat df = new SimpleDateFormat("yyyy-MM-dd");
            f.append(" and TO_CHAR(bean.capture_time,'yyyy-MM-dd') <= '"
                    + df.format(clsj) + "'");
        }
        return find(f);
    }

3、多表关联查询返回List

（1）多表关联查询list

@SuppressWarnings("unchecked")
    public List<BeanCompanyEmp> getListCompanyIsNull(BeanCompanyEmp beanCompanyEmpParam) {

        StringBuffer sql = new  StringBuffer();

          sql.append("      select   ");
          sql.append("  cemp.id ,cemp.doc_no ,jux.mobile ,jux.comefrom,jux.realname,jr.role_name ,cemp.latitude latitude  ,cemp.longitude longitude ");
          sql.append("  from   company_emp cemp,    ");
          sql.append("      jc_user  jc,    ");
          sql.append("      jc_user_ext jux,    ");
          sql.append("     jc_role  jr,     ");
          sql.append("     jc_user_role jur    "); 

          sql.append("  where    cemp.id = jc.user_id    ");
          sql.append("  and     cemp.id = jux.user_id    ");
          sql.append("  and     jur.user_id = jc.user_id    ");
          sql.append("   and   jur.role_id = jr.role_id     ");
          sql.append("   and   cemp.belong_company is null    ");
        String sqls =  sql.toString();
        Query query =   sessionFactory.getCurrentSession().createSQLQuery(sqls.toString());
        List list = query.list();
        List<BeanCompanyEmp> result=new ArrayList<BeanCompanyEmp>();
        if(list!=null&&list.size()>0){

             for (Object object : list) {
                    int i = 0;
                    BeanCompanyEmp modell=new BeanCompanyEmp();
                    Object[] temp = (Object[]) object;
                    modell.setId(Integer.parseInt( temp[i++] +""));
                    modell.setDoc_no(String.valueOf(temp[i++]));
                    modell.setMobile(String.valueOf(temp[i++]));
                    modell.setComefrom(String.valueOf(temp[i++]));
                    modell.setRealName(String.valueOf(temp[i++]));
                    modell.setRoleNames(String.valueOf(temp[i++]));
                    modell.setLatitude(String.valueOf(temp[i++]));
                    modell.setLongitude(String.valueOf(temp[i++]));
                    result.add(modell);
             }
         }

        return result;

    }
    

（2）多表查询带分页功能

public Pagination getLookPage(BeanCompanyEmp beanCompanyEmpParam, int pageNo, int pageSize) {

        Pagination pagination = new Pagination();
        StringBuffer sql = new  StringBuffer();
          sql.append("      select   ");
          sql.append("  cemp.id id,cemp.doc_no doc_no,jux.mobile mobile,jux.comefrom comefrom,jux.realname realname,jr.role_name role_name   ");
          sql.append("  from   company_emp cemp,    ");
          sql.append("         jc_user  jc,    ");
          sql.append("        jc_user_ext jux,    ");
          sql.append("        jc_role  jr,     ");
          sql.append("        jc_user_role jur    ");
          sql.append("  where    cemp.id = jc.user_id    ");
          sql.append("  and     cemp.id = jux.user_id    ");
          sql.append("  and     jur.user_id = jc.user_id    ");
          sql.append("  and   jur.role_id = jr.role_id     ");
          sql.append("   and   cemp.belong_company is  null    ");
          //TODO这最好查询角色名称
          if(beanCompanyEmpParam.getDoc_no() != null && beanCompanyEmpParam.getDoc_no() != ""){
              sql.append("   and    cemp.doc_no like '%"+beanCompanyEmpParam.getDoc_no()+"%'" ); 

          }
          if(beanCompanyEmpParam.getRealName() != null && beanCompanyEmpParam.getRealName() != ""){
              sql.append("   and    jux.realname like '%"+beanCompanyEmpParam.getRealName()+"%'" ); 

          }

        String sqls =  sql.toString();
        Query query =   sessionFactory.getCurrentSession().createSQLQuery(sqls.toString());
        List list = query.list();
        List<BeanCompanyEmp> result=new ArrayList<BeanCompanyEmp>();
        if(list!=null&&list.size()>0){

             for (Object object : list) {
                    int i = 0;
                    BeanCompanyEmp modell=new BeanCompanyEmp();
                    Object[] temp = (Object[]) object;
                    modell.setId(Integer.parseInt( temp[i++] +""));
                    modell.setDoc_no(String.valueOf(temp[i++]));
                    modell.setMobile(String.valueOf(temp[i++]));
                    modell.setComefrom(String.valueOf(temp[i++]));
                    modell.setRealName(String.valueOf(temp[i++]));
                    modell.setRoleNames(String.valueOf(temp[i++]));

                    result.add(modell);
             }
         }

        pagination.setList(result);
        pagination.setPageNo(pageNo);
        pagination.setPageSize(pageSize);

        return pagination;

    }
    

4、获取参数Collection集合

/**
     * 获取参数类型集合
     */
    @SuppressWarnings("unchecked")
    public Collection<Object> getList() {
        Finder f = Finder.create("select distinct bean.paramType from BeanParamManager bean where bean.dataStatus=0 and bean.sslx ='中心参数'");
        return find(f);
    }

5、返回值是void

public void insertDayModel(Integer dayNo){
        List<Object> list = dayDao.selectParkno();
        for (Object b : list) {
            String parkNo = b.toString();
            BeanDayTraffic bean = new BeanDayTraffic();
            bean.setParkno(parkNo);
            Date date = new Date();
            Calendar calendar = Calendar.getInstance();
            calendar.setTime(date);
            calendar.add(Calendar.DAY_OF_MONTH, +dayNo);//+1今天的时间加一天
            date = calendar.getTime();
            SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
            String sDate = sdf.format(date);
            try {
                Date dbDate = sdf.parse(sDate);
                bean.setDay_time(dbDate);
            } catch (ParseException e) {
                // TODO Auto-generated catch block
                System.out.println(e);
            }
            bean.setTypes("Day");
            bean.setTime1(0);
            bean.setTime2(0);
            bean.setTime3(0);
            bean.setTime4(0);
            bean.setTime5(0);
            bean.setTime6(0);
            dayDao.save(bean);
        }
    }