public People(string document, string name, string email, PeopleType type)
{
Document = document;
Name = name;
Email = email;
Type = type;
}
public IPeople GetPeople(PeopleType type)
{
switch (type)
{
case PeopleType.Rural:
{
return(new Villagers());
}
case PeopleType.Urban:
{
return(new CityPeople());
}
case PeopleType.Cave:
{
return(new CavePeople());
}
default:
{
throw new NotSupportedException();
}
}
}
/// <summary>
/// 不同的国家，不同的问候方式怎么实现
/// 加参数，加判断
/// 增加国家，修改方法
/// 职责不单一
/// </summary>
/// <param name="name"></param>
/// <param name="type"></param>
public static void Greeting(string name, PeopleType type)//传的是值，根据值来决定行为
{
if (type == PeopleType.chinese)
{
Console.WriteLine("{0},早上好", name);
}
else if (type == PeopleType.English)
{
Console.WriteLine("{0},English", name);
}
else
{
throw new Exception("");
}
}
public IPeople GetPeople(PeopleType type)
{
IPeople people = null;
switch (type)
{
case PeopleType.RURAL: people = new Villagers(); break;
case PeopleType.URBAN: people = new CityPeople(); break;
default: break;
}
return(people);
}
//加参数判断---执行分支逻辑
//好处：公共逻辑方便
//坏处：任意分支变化，经常改动代码
public void SayHiSwitch(string name, PeopleType peopleType)
{
switch (peopleType)
{
case PeopleType.E:
Console.WriteLine(name + "good morning");
break;
case PeopleType.C:
Console.WriteLine(name + "早上好");
break;
default:
break;
}
}
public IPeople GetPeople(PeopleType type)
{
IPeople people = null;
switch (type)
{
case PeopleType.Rural:
people = new Villagers();
break;
case PeopleType.Urban:
people = new CityPeople();
break;
}
return(people);
}
public IPeople GetPeople(PeopleType type)
{
IPeople people = null;
switch (type)
{
case PeopleType.RURAL:
people = new Villagers();
break;
case PeopleType.URBAN:
people = new CityPeople();
break;
default:
break;
}
return people;
}
public IPeople createPerson(PeopleType pt)
{
IPeople person = null;
switch (pt)
{
case PeopleType.Bandit:
person = new Bandits();
break;
case PeopleType.Villager:
person = new Villagers();
break;
case PeopleType.CityFolk:
person = new CityFolks();
break;
}
return person;
}
public IPeople getPeople(PeopleType type)
{
IPeople person = null;
switch (type)
{
case PeopleType.COUNTRY:
people = new CountryPeople();
break;
case PeopleType.CITY:
people = new CityPeople();
break;
default:
break;
}
return(people);
}
public List <People> GetInvitePeopleListByType(PeopleType type)
{
if (type == PeopleType.Firend)
{
return(GetFriendPeopleList());
}
if (type == PeopleType.Clan)
{
return(GetClanPeopleList());
}
if (type == PeopleType.Nearby)
{
return(GetNearbyPeopleList());
}
Engine.Utility.Log.Error("没有取到数据！！！");
return(null);
}
/// <summary>
/// SayMorning方法，适应不同的人和不同的打招呼的方法
/// </summary>
/// <param name="name"></param>
/// <param name="peopleType"></param>
public void SayMorning(string name, PeopleType peopleType)
{
switch (peopleType)
{
case PeopleType.Chiness:
{
Console.WriteLine($"早上好,{name}");
}
break;
case PeopleType.America:
{
Console.WriteLine($"Good Morning,{name}");
}
break;
default:
throw new Exception("类型出错！");
}
}
/// <summary>
/// 中国人---晚上好
/// 美国人---good evening
/// ...
///
/// 假如要增加一个国家的人Malaysia,就得修改方法，增加一个分支
/// 任意分支变化 都得修改方法
/// 经常改动 很不稳定 难以维护
///
/// 增加公共逻辑方便
///
/// 为不同的人，进行不同的问候
/// 传递个变量---判断一下---执行对应的逻辑
/// 能不能直接点，直接传递逻辑呗
/// 逻辑就是方法---委托
/// </summary>
/// <param name="name"></param>
public void SayHi(string name, PeopleType peopleType)
{
Console.WriteLine("prepare SayHi..");
switch (peopleType)
{
case PeopleType.Chinese:
Console.WriteLine($"{name},晚上好~");
break;
case PeopleType.American:
Console.WriteLine($"{name},good evening~");
break;
case PeopleType.Malaysia:
Console.WriteLine($"{name},*^%*^%^&%^%~");
break;
default: //遇到不认识的枚举，说明调用有问题，那就不要隐藏，直接异常
throw new Exception("wrong peopleType");
}
}
//中国人：晚上好
//美国人：good evening!
//通过枚举判断，执行各自的业务逻辑
//如果新增一个国家的人，那么就修改这个方法
//如果业务升级，方法需要频繁的修改，方法很不稳定
//传参数peopleType 是判断之后执行逻辑，传参数是为了执行逻辑，参数不同逻辑又不一样，既然如此，能不能把这个逻辑直接传过来呢？逻辑是什么？逻辑不就是方法吗？如果把一个方法包裹之后传递呢？ 委托
public void SayHi(string name, PeopleType peopleType)
{
Console.WriteLine("招手");
switch (peopleType)
{
case PeopleType.Chinese:
Console.WriteLine($"{name}:晚上好！");
break;
case PeopleType.American:
Console.WriteLine($"{name}:good evening！");
break;
case PeopleType.Japanese:
Console.WriteLine($"{name}:#@%￥%……%%…！");
break;
default:
throw new Exception("枚举不存在！");
}
}
public static IPeople GetPeople(PeopleType type)
{
