Builder Pattern Sample in C#
Builder pattern – ob’ektlarni
qadamba-qadam yaratishga mo’ljallangan patterndir.
Masalan har
bir kitobning Id, Name, Author nomli xususiyatlari uchun BookBuilder qanday
realizatsiya qilinishini ko’ramiz
public sealed class Book
{
private readonly int id;
private readonly string name;
private readonly string author;
public Book(int id, string name,string author)
{
this.id = id;
this.name = name;
this.author = author;
}
public string GetInfo()
{
return $"Book INFO: id:{id}, name: {name}, author:{author}";
}
}
Endi BookBuilder classini realizatsiya qilamiz:
public sealed class BookBuilder : IBookBuilderSetId, IBookBuilderSetName,
IBookBuilderSetAuthor, IBookBuilder
{
private int id;
private string name;
private string author;
private BookBuilder() { }
public static IBookBuilderSetId CreateNew()
{
return new BookBuilder();
}
public IBookBuilderSetName SetId(int id)
{
this.id = id;
return this;
}
public IBookBuilderSetAuthor SetName(string name)
{
this.name = name;
return this;
}
public IBookBuilder SetAuthor(string author)
{
this.author = author;
return this;
}
public Book Build()
{
return new Book(id,
name, author);
}
}
public interface IBookBuilderSetId
{
IBookBuilderSetName SetId(int id);
}
public interface IBookBuilderSetName
{
IBookBuilderSetAuthor SetName(string name);
}
public interface IBookBuilderSetAuthor
{
IBookBuilder SetAuthor(string author);
}
public interface IBookBuilder
{
Book Build();
}
Ishlatilishi:
static void Main(string[] args)
{
Book myBook = BookBuilder.CreateNew()
.SetId(10)
.SetName("Learning .Net Core")
.SetAuthor("Mike Tyson")
.Build();
System.Console.WriteLine(myBook.GetInfo());
System.Console.ReadLine();
}
Natijasi:
Book INFO:
id:10, name: Learning .Net Core, author: Mike Tyson
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