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：
publicinterface IDealerRepository
{
voidCreateDealer(T dealer)whereT :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voidAddParentSubCount(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）voidSubParentEleMoney(Guid parentdealerid,decimal subelemoney);
//下订单时，增加经销商的PVvoidAddDealerPV(Guid dealerid,decimal orderpv);
}
2.登录仓储接口定义：
publicinterface ILoginRepository
{
voidCreateLogin(T login)whereT :class, IAggregationRoot;
Guid UserLogin(stringtel,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：
publicpartialclass Contact
{
publicContact CreateContact(Guid dealerid,stringname,stringtel,stringprovince,string city,
stringzero,stringstreet,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)
{
case1:this.IsDefault = IsDefaultContact.默认;
break;
case2:this.IsDefault = IsDefaultContact.非默认;
break;
}
returnthis;
}
}
5.经销商聚合中经销商层次结构对象的领域逻辑实现：
publicpartialclass DealerTree
{
privatereadonly IDealerRepository idealerrepository;
public DealerTree(IDealerRepository idealerrepository)
{
this.idealerrepository = idealerrepository;
}
publicDealerTree 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;
returnthis;
}
}
6.经销商聚合中经销商对象的领域逻辑实现：
publicpartialclass Dealers
{
privatereadonly IDealerRepository idealerrepository;
public Dealers(IDealerRepository idealerrepository)
{
this.idealerrepository = idealerrepository;
}
publicDealers RegisterDealer(Guid id,stringname,stringtel,decimaltelmoney,List 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;
}
elseif(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);
returnthis;
}
}
7.登录聚合中登录对象的领域逻辑实现：
publicpartialclass Login
{
publicLogin 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;
returnthis;
}
}
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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