步步为营 .NET 代码重构学习笔记 六

一、Extract Class（提炼类）
动机（Motivation）
一个class应该是一个清楚的抽象（abstract），处理一些明确的责任。但在实际工作中，class会不断成长扩展。这个class会变得过份复杂，很快，class就会变成一团乱麻。
示例
    public class Person
    {
        private string _name;
        private string _officeAreaCode;
        private string _officeNumber;
        public string Name
        {
            get { return _name; }
            set { _name = value; }
        }
        public string OfficeAreaCode
        {
            get { return _officeAreaCode; }
            set { _officeAreaCode = value; }
        }
        public string OfficeNumber
        {
            get { return _officeNumber; }
            set { _officeNumber = value; }
        }
        public string TelephoneNumber
        {
            get { return "(" + _officeAreaCode + ")" + _officeNumber; }
        }
    } 
 
改为
  public class Person
    {
        private string _name;
        private Telephone _telephoneNumber;
        public Telephone TelephoneNumber
        {
            get { return _telephoneNumber; }
            set { _telephoneNumber = value; }
        }
        public string Name
        {
            get { return _name; }
            set { _name = value; }
        }
        public string TemphoneNumber
        {
            get { return _telephoneNumber.TelephoneNumber; }
        }
    }
    public class Telephone
    {
        private string _officeAreaCode;
        private string _officeNumber;
        public string OfficeAreaCode
        {
            get { return _officeAreaCode; }
            set { _officeAreaCode = value; }
        }
        public string OfficeNumber
        {
            get { return _officeNumber; }
            set { _officeNumber = value; }
        }
        public string TelephoneNumber
        {
            get { return "(" + _officeAreaCode + ")" + _officeNumber; }
        }
    } 
 
二、Inline Class（将类内联化）
动机（Motivation）
一个class不再承担足够责任、不再有单独存在的理由，将class的所有特性搬移到另一个class中，然后移除原class。
示例
    public class User
    {
        private int _ID;
        private string _name;
        public int ID
        {
            get { return _ID; }
            set { _ID = value; }
        }
        public string Name
        {
            get { return _name; }
            set { _name = value; }
        }

    }
    public class UserInfo
    {
        private int _ID;
        private string _Age;
        public string ID
        {
            get { return _ID; }
            set { _ID = value; }
        }
        public string Age
        {
            get { return _Age; }
            set { _Age = value; }
        }
    } 
 
改为
    public class User
    {
        private int _ID;
        private string _name;
        private string _Age;
        public int ID
        {
            get { return _ID; }
            set { _ID = value; }
        }
        public string Name
        {
            get { return _name; }
            set { _name = value; }
        }
        public string Age
        {
            get { return _Age; }
            set { _Age = value; }
        }
    } 
 

补充：Web开发 , ASP.Net ,

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