建造者 模式解析

建造者 模式解析

建造者 模式解析

建造者 模式解析

class Product
{
IListparts = new List();
public void Add(string part)
{
parts.Add(part);
}

public void Show()
{
    Console.WriteLine("產品建立---");
    foreach (string part in parts)
    {
        Console.WriteLine(part);
    }
}

}

abstract class Builder
{
public abstract void BuilderA();
public abstract void BuilderB();
public abstract Product GetResult();
}

class ConcreteBuilder1 : Builder
{
private Product product = new Product();
public override void BuildPartA()
{
product.Add(“零件A”);
}
public override void BuildPartB()
{
product.Add(“零件B”);
}
public override Product GetResult()
{
return product;
}
}

class ConcreteBuilder2 : Builder
{
private Product product = new Product();
public override void BuildPartA()
{
product.Add(“零件X”);
}
public override void BuildPartB()
{
product.Add(“零件Y”);
}
public override Product GetResult()
{
return product;
}
}

class Director
{
public void Construct(Builder builder)
{
builder.BuildPartA();
builder.BuildPartB();
}
}

static void Main(string[] args)
{
Director director = new Director();
Builder b1 = new ConcreteBuilder1();
Builder b2 = new ConcreteBuilder2();

director.Construct(b1);
Product p1 = b1.GetResult();
p1.Show();

director.Construct(b2);
Product p2 = b2.GetResult();
p2.Show();

}

建造者模式是在當建立複雜物件的演算法應該獨立於該物件的
組成部分，以及它們的裝配方式時適用的模式。