一对一关联查询，删除操作基于ssh

//实体类关联--agent表的user_id关联着user 表的id主键
@OneToOne(cascade = { CascadeType.ALL })
    @JoinColumn(name = "user_id")
    private User user ;  //

删除操作

//删除商家
        @RequestMapping("/delete_agent.do")
        @ResponseBody
        public Map<String,Object> delete_business(int id){
            Map<String,Object> map=new HashMap<String,Object>();
            Agent agent;
            try {
                agent=agentService.getbyId(id);//查询获取agent表对应id的数据--在这就查出了对应user表id关联的user_id
                agentService.delete(agent.getUser().getId());//调用删除方法，将user_id传到实现层
                map.put("flag","1");
            } catch (Exception e) {
                // TODO Auto-generated catch block
                logger.error("删除商家失败", e);
                map.put("flag","0");
            }
            
            return map;
        }

实现层impl

@Override
    public int delete(int id) throws Exception {
        String hql="update User set status=0 where id=?";//在这里，虽然是agentimpl，但是能将hibernate语句更新user表
        List<Object> param=new ArrayList<Object>();
        param.add(id);
        return dao.exculeByParams(hql, param);
    }