ORM框架(ITDOS实战源码)

ORM提供了实现持久化层的另一种模式，它采用映射元数据来描述对象关系的映射，使得ORM中间件能在任何一个应用的业务逻辑层和数据库层之间充当桥梁。

如以下示例:

  public int GetSystemAccreditMessageInfo(AccreditParam param)
         {
             var where = new Where<User>();
             var countMesage = ;//记录提醒次数
             HttpCookie cookie = HttpContext.Current.Request.Cookies["UserLogin"] as HttpCookie;
             if (cookie["Login_id"] != null)
             {
                 where.And(d => d.id == cookie["Login_id"].ToString());
             }
             where.And(d => d.Del_state == );
             var fs = DB.Context.From<User>()
                 .Select(User._.All, Power._.All)
                 .InnerJoin<Power>((a, b) => a.Role_id == b.id)
                 .Where(where);
             if (fs.First().Authority == "")
             {
                 countMesage = ;
             }
             else if (fs.First().Authority == "")
             {
                 countMesage = DB.Context.From<Accredit>().Where(d => d.OAuditor_signature == null || d.OAuditor_signature == "").Count();
             }
             else if (fs.First().Authority == "")
             {
                 countMesage = DB.Context.From<Accredit>().Where(d => d.TAuditor_signature == null || d.TAuditor_signature == "").Count();
             }
             else if (fs.First().Authority == "")
             {
                 countMesage = DB.Context.From<Accredit>().Where(d => d.OAuditor_signature == null || d.OAuditor_signature == "" || d.TAuditor_signature == null || d.TAuditor_signature == "").Count();
             }
             return countMesage;
         }

AccreditLogic.cs

 public BaseResult AddAccreditInfo(AccreditParam param)
         {
             var model = new Accredit();
             model.id = Guid.NewGuid().ToString();
             model.Acceptance_number = param.Acceptance_number;
             model.Certificate_number = param.Certificate_number;
             model.Issuing_office = param.Issuing_office;
             model.Issue_date = param.Issue_date;
             model.Effective_date = param.Effective_date;
             model.Authorization_projectname = param.Authorization_projectname;
             model.Measuring_range = param.Measuring_range;
             model.Accuracy = param.Accuracy;
             model.Organization_name = param.Organization_name;
             model.Address = param.Address;
             model.Corporate_representative = param.Corporate_representative;
             model.Leading_person = param.Leading_person;
             model.Competent_department = param.Competent_department;
             model.Authorized_area = param.Authorized_area;
             model.Authorization_form = param.Authorization_form;
             model.Approver = param.Approver;
             model.Input_person = param.Input_person;
             model.Input_unit = param.Input_unit;
             model.Acceptance_date = param.Acceptance_date;
             HttpCookie cookie = HttpContext.Current.Request.Cookies["UserLogin"] as HttpCookie;
             if (cookie["OrgId"] != null)
             {
                 model.OrgId = cookie["OrgId"].ToString();
             }
             if (cookie["OrgId"]=="63001c38-afa4-4a06-567d-0f39b6b5ca9b")
             {
                 model.Processing_state = ;
             }
             model.Remarks = param.Remarks;
             model.Del_state = ;
             model.Time = DateTime.Now;
             //model.Processing_state = param.Processing_state;
             model.brand = param.brand;
             var count = DB.Context.Insert<Accredit>(model);
             return new BaseResult(true, model, "", count);
         }

  public BaseResult UptAccreditInfo(AccreditParam param)
         {
             var result = GetUpdateModel(param);
             if (!result.IsSuccess)
                 return result;

             var model = (Accredit)result.Data;
             model.Acceptance_number = param.Acceptance_number;
             model.Certificate_number = param.Certificate_number;
             model.Issuing_office = param.Issuing_office;
             model.Issue_date = param.Issue_date;
             model.Effective_date = param.Effective_date;
             model.Authorization_projectname = param.Authorization_projectname;
             model.Measuring_range = param.Measuring_range;
             model.Accuracy = param.Accuracy;
             model.Organization_name = param.Organization_name;
             model.Address = param.Address;
             model.Corporate_representative = param.Corporate_representative;
             model.Leading_person = param.Leading_person;
             model.Competent_department = param.Competent_department;
             model.Authorized_area = param.Authorized_area;
             model.Authorization_form = param.Authorization_form;
             model.Approver = param.Approver;
             model.Input_person = param.Input_person;
             model.Input_unit = param.Input_unit;
             HttpCookie cookie = HttpContext.Current.Request.Cookies["UserLogin"] as HttpCookie;
             if (cookie["OrgId"] != null)
             {
                 model.OrgId = cookie["OrgId"].ToString();
             }
             if (cookie["OrgId"] == "63001c38-afa4-4a06-567d-0f39b6b5ca9b")
             {
                 model.Processing_state = ;
             }
             model.Acceptance_date = param.Acceptance_date;
             model.Remarks = param.Remarks;
             model.Del_state = ;
             //model.Processing_state = param.Processing_state??model.Processing_state;
             model.Time = DateTime.Now;
             model.brand = param.brand;
             var count = DB.Context.Update(model, d => d.id == param.id);
             return new BaseResult(true, model, "", count);
         }

AccreditLogic.cs