Builder Pattern

 
  • Creational pattern
  • Builder Pattern:- The intent of the builder pattern is to separate the construction of complex object from its representation. By doing so the same construction process can create different representations.
  • It improves modularity by improving the way the complex object is constructed and represented.
  • you have to keep immutability of the object and at the same time and you have to create the object with different set of attributes.
				
					namespace builder
{
    public class Bike
    {
        private string bikeType;
        private readonly List<string> parts = new();

        public Bike(string bikeType)
        {
            this.bikeType = bikeType;
        }

        public void AddPart(string part)
        {
            parts.Add(part);
        }

        public override string ToString()
        {
           return String.Join(Environment.NewLine,
                         parts.Select(x => String.Join(", ", x)));
        }
    }
    

}



				
			
				
					namespace builder
{
    public abstract class BikeBuilder
    {
        public Bike Bike { get; set; }
        public BikeBuilder(string bikeType)
        {
            Bike = new Bike(bikeType);
        }
        public abstract void BuildEngine();

    }


    public class RoyalEnfield : BikeBuilder
    {
        public RoyalEnfield() : base("Enfield Powerful Engine")
        {

        }
        public override void BuildEngine()
        {
            Bike.AddPart("Enfiled Engine");
            Bike.AddPart("Enfiled Extra Part added");
        }

    }

    public class SplenderBike : BikeBuilder
    {
        public SplenderBike() : base("Splender Normal engine")
        {

        }
        public override void BuildEngine()
        {
            Bike.AddPart("Enfiled Engine");
        }
    }
}



				
			
				
					namespace builder
{

    public class BikeFactory 
    {
        private BikeBuilder? _builder;
        public void CreateBike(BikeBuilder builder)
        {
            _builder = builder;
            _builder.BuildEngine();
        }

        public void ShowParts()
        {
            Console.WriteLine(_builder?.Bike.ToString());

        }
    }
   
}



				
			
				
					using builder;

var obj = new BikeFactory();
obj.CreateBike(new RoyalEnfield());
obj.ShowParts();

Enfiled Engine

Enfiled Extra Part added

https://github.com/AnuragDaCoder/builder_1

Leave a Comment