原文: DDD实战进阶第一波(九):开发一般业务的大健康行业直销系统(实现经销商上下文仓储与领域逻辑) 上篇文章主要讲述了经销商上下文的需求与POCO对象,这篇文章主要讲述该界限
上篇文章主要讲述了经销商上下文的需求与POCO对象,这篇文章主要讲述该界限上下文的仓储与领域逻辑的实现。
关于界限上下文与EF Core数据访问上下文参考产品上下文相应的实现,这里不再累述。
因为在经销商上下文中有两个聚合,一个是经销商聚合,一个是登录聚合,所以我们需要实现两个仓储接口:
1.经销商仓储接口定义:
public interface IDealerRepository { void CreateDealer<T>(T dealer) where T : class, IAggregationRoot; //获取上级经销商(当前代注册经销商)的层次结构 int GetParentDealerLayer(Guid dealerid); //将上级经销商(代注册经销商)的子个数加一 void AddParentSubCount(Guid? parentdealerid); //减去父进销商的电子币(用于注册和下单时,扣减经销商的电子币) void SubParentEleMoney(Guid parentdealerid, decimal subelemoney); //下订单时,增加经销商的PV void AddDealerPV(Guid dealerid, decimal orderpv); }
2.登录仓储接口定义:
public interface ILoginRepository { void CreateLogin<T>(T login) where T : class, IAggregationRoot; Guid UserLogin(string tel, string password); }
3.具体对应的仓储实现在仓储实现的项目中自己实现,主要通过EF Core完成数据库的访问与操作。
4.经销商聚合中联系人对象的领域逻辑实现:
public partial class Contact { public Contact CreateContact(Guid dealerid,string name,string tel,string province,string city, string zero,string street,int isdefault) { this.Id = Guid.NewGuid(); this.DealerId = dealerid; this.ContactName = name; this.ContactTel = tel; this.Province = province; this.City = city; this.Zero = zero; this.Street = street; switch (isdefault) { case 1:this.IsDefault = IsDefaultContact.默认; break; case 2:this.IsDefault = IsDefaultContact.非默认; break; } return this; } }
5.经销商聚合中经销商层次结构对象的领域逻辑实现:
public partial class DealerTree { private readonly IDealerRepository idealerrepository; public DealerTree(IDealerRepository idealerrepository) { this.idealerrepository = idealerrepository; } public DealerTree CreateDealerTree(Guid? parentdealerid,Guid dealerid) { this.Id = Guid.NewGuid(); this.DealerId = dealerid; this.ParentDealerId = parentdealerid; this.Layer = parentdealerid == null ? 1 : idealerrepository.GetParentDealerLayer(Guid.Parse(parentdealerid.ToString())) + 1; return this; } }
6.经销商聚合中经销商对象的领域逻辑实现:
public partial class Dealers { private readonly IDealerRepository idealerrepository; public Dealers(IDealerRepository idealerrepository) { this.idealerrepository = idealerrepository; } public Dealers RegisterDealer(Guid id,string name,string tel,decimal telmoney,List<Contact> contacts,Guid? parentid) { this.Id = id; this.Code = "Code " + name; this.Name = name; this.Tel = tel; this.TotalEleMoney = telmoney; if (telmoney < 2000) { this.CardType = CardType.普通会员; } else if (telmoney >= 2000 && telmoney < 4000) { this.CardType = CardType.银卡会员; } else { this.CardType = CardType.金卡会员; } this.SubCount = 0; this.TotalPV = 0; this.JiangJInMoney = 0; this.Contacts = contacts; this.DealerTree = new DealerTree(idealerrepository).CreateDealerTree(parentid, id); return this; } }
7.登录聚合中登录对象的领域逻辑实现:
public partial class Login { public Login CreateLogin(string code,Guid dealerid) { this.Id = Guid.NewGuid(); //手机号 this.Code = code; //默认初始密码 this.Password=MD5Encrption.GetMd5Str("111111"); this.DealerId = dealerid; return this; } }
这样,我们就完成了基本数据库的访问、操作和相关领域逻辑的实现。
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