建造者模式:将一个复杂对象的构建与他的表示分离,使得同样的构建过程可以创建不同的表示。
Builder Director
Builder是什么?是为Product创建一个对象的各个部件指定的抽象接口,
ContreteBuilder:是具体建造者,实现Builder接口,构造和装配各个部件。Product就是具体的对象。
Director是指挥者,构建一个使用builder接口的对象。用于构建一些复杂的对象,这些对象内部构建间的构造顺序通常是稳定的,但对象的构造通常面临着复杂的变化。
using System; using System.Collections.Generic; using System.Linq; using System.Text; namespace DesignPatterns.BuilderPattern.Structural { public class Product { private List<string> _parts = new List<string>(); public void Add(string part) { _parts.Add(part); } public void Show() { Console.WriteLine("Product Parts"); foreach (string part in _parts) { Console.WriteLine(part); } } } }
using System; using System.Collections.Generic; using System.Linq; using System.Text; namespace DesignPatterns.BuilderPattern.Structural { public abstract class Builder { public abstract void BuildPartA(); public abstract void BuildPartB(); public abstract Product GetResult(); } }
using System; using System.Collections.Generic; using System.Linq; using System.Text; namespace DesignPatterns.BuilderPattern.Structural { public class ConcreteBuilder1 : Builder { private Product _product = new Product(); public override void BuildPartA() { _product.Add("PartA"); } public override void BuildPartB() { _product.Add("PartB"); } public override Product GetResult() { return _product; } } }
using System; using System.Collections.Generic; using System.Linq; using System.Text; namespace DesignPatterns.BuilderPattern.Structural { public class ConcreteBuilder2 : Builder { private Product _product = new Product(); public override void BuildPartA() { _product.Add("PartX"); } public override void BuildPartB() { _product.Add("PartY"); } public override Product GetResult() { return _product; } } }
using System; using System.Collections.Generic; using System.Linq; using System.Text; namespace DesignPatterns.BuilderPattern.Structural { public class Director { /// <summary> /// Builder uses a complex series of steps /// </summary> public void Construct(Builder builder) { builder.BuildPartA(); builder.BuildPartB(); } } }
using System; using System.Collections.Generic; using System.Linq; using System.Text; using DesignPatterns.BuilderPattern.Structural; namespace DesignPatterns.BuilderPattern { class Program { static void Main(string[] args) { // Create director and builders Director director = new Director(); Builder b1 = new ConcreteBuilder1(); Builder b2 = new ConcreteBuilder2(); // Construct two products director.Construct(b1); Product p1 = b1.GetResult(); p1.Show(); director.Construct(b2); Product p2 = b2.GetResult(); p2.Show(); } } }
建造者模式(Builder) http://www.cnblogs.com/libingql/p/3633527.html
来源:https://www.cnblogs.com/suzixuan/p/6995562.html