代码之家 › 专栏 › 技术社区 › Dongdong

如何将基类重新设计为泛型

genetic-algorithm code-generation generics c#

-1

Dongdong · 技术社区 · 6 年前

这是来自天马

public class BaseClass
{
    public Method1();
    public Method2();
    Other methods...
}
public class A : BaseClass
{
    public override Method1();
    public override Method2();
}
public class B : BaseClass
{
    public override Method1();
    public override Method2();
}
public class C : BaseClass
{
    public override Method1();
    public override Method2();
}

必须定制上述代码,且代码必须如下:

public class BaseClass1 : BaseClass
{
    public override Method1(); 
}
public class A1 : A 
//There is a big problem here, 
//if A1 inherit A, then cannot get changes from BaseClass1 
//if A1 inherit BaseClass1, then cannot get changes from A
//Same issue to class B1, C1, D1...
{
    public override Method1(); 
}
public class B1 : B
{
    public override Method1(); 
}
public class C1 : C
{
    public override Method1(); 
}

团队B 只是,他们可以轻松做到:

public class BaseClass2 : BaseClass1
{
    public override Method1(); 
}
public class A2 : A1
//Same problem here with TeamB
{
    public override Method1(); 
}
public class B2 : B1
{
    public override Method1(); 
}
public class C2 : C1
{
    public override Method1(); 
}

问题很明显:除了TeamA之外,无论什么球队,如果我们需要定制的话,只需要一次 ,我们必须定制所有的类,这太重了!

我的问题是:有没有一种方法可以从天马 ,使代码通用,那么我们就不必做大量的定制了?

1 回复 | 直到 6 年前

John Wu 6 年前

你的问题并不是百分之百的清楚,但我猜这是一个核心产品工程团队(TeamA)负责生成平台代码,以及一个顾问或“专业服务”团队,他们负责产品并为客户实施。专业服务团队希望能够修改内容,但也能够从产品工程中获取补丁或版本升级,而无需进行代码合并。(否则,简单的解决方案是就地修改,而不是扩展和重写。)

//This is what TeamA provides in a release

public class BaseClass
{
    public Method1();
    public Method2();
}

public class CustomBaseClass : BaseCLass
{
    //No code. This is just a pass-through class
}

public class A : CustomBaseClass
{
    public override Method1();
    public override Method2();
}

public class B : CustomBaseClass
{
    public override Method1();
    public override Method2();
}

public class C : CustomBaseClass
{
     public override Method1();
     public override Method2();
}

然后,当TeamB需要定制基类的某些内容时,他们只需要在一个地方完成,而不需要更改其他内容:

//This is how it looks when TeamB is done with it
public class BaseClass
{
    public Method1();
    public Method2();
}

public class CustomBaseClass : BaseCLass
{
    public override Method1(); //customized now, and will affect all existing classes automatically
}

public class A : CustomBaseClass
{
    public override Method1();
    public override Method2();
}

public class B : CustomBaseClass
{
    public override Method1();
    public override Method2();
}

public class C : CustomBaseClass
{
     public override Method1();
     public override Method2();
}

当TeamB需要从TeamA获取产品版本时,他们可以保留CustomBaseClass(必须有一个仅用于定制的协议)并更新其他所有内容。这样定制是向前兼容的,不需要合并,只需要一点测试。

//This is how it looks when TeamA provides a new release with a new method
public class BaseClass
{
    public Method1();
    public Method2();
    public NewMethod();
}

public class CustomBaseClass : BaseCLass
{
    public override Method1(); //customized now, and will affect all existing classes automatically
}

public class A : CustomBaseClass
{
    public override Method1();
    public override Method2();
}

public class B : CustomBaseClass
{
    public override Method1();
    public override Method2();
}

public class C : CustomBaseClass
{
     public override Method1();
     public override Method2();
}