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| 1 | +using System; |
| 2 | +using System.Collections.Generic; |
| 3 | +using System.Linq; |
| 4 | +using System.Text; |
| 5 | +using System.Threading.Tasks; |
| 6 | + |
| 7 | +namespace Examples.E1 |
| 8 | +{ |
| 9 | + public class CargoService |
| 10 | + { |
| 11 | + private CargoFactory CargoFactory { get; set; } |
| 12 | + private string Origin =string.Empty; |
| 13 | + private string Destination = string.Empty; |
| 14 | + public ICargo BookProduct(string type) |
| 15 | + { |
| 16 | + |
| 17 | + return CargoFactory.CreateCargoFactory(type,Origin,Destination); |
| 18 | + |
| 19 | + } |
| 20 | + } |
| 21 | + |
| 22 | + internal abstract class CargoFactory |
| 23 | + { |
| 24 | + public ICargo CreateCargoFactory(string type,string origin,string destination) |
| 25 | + { |
| 26 | + CargoFactory factory =null ; |
| 27 | + if (type == "Air") |
| 28 | + { |
| 29 | + factory= new AirFactory(); |
| 30 | + } |
| 31 | + if (type == "Ship") |
| 32 | + { |
| 33 | + factory = new ShipFactory(origin,destination); |
| 34 | + |
| 35 | + } |
| 36 | + if (type == "Train") |
| 37 | + { |
| 38 | + factory = new TrainFactory(); |
| 39 | + |
| 40 | + } |
| 41 | + if (factory is null) |
| 42 | + throw new Exception("type is wrong"); |
| 43 | + |
| 44 | + return factory.CreateCargo(); |
| 45 | + } |
| 46 | + |
| 47 | + public abstract ICargo CreateCargo(); |
| 48 | + |
| 49 | + } |
| 50 | + |
| 51 | + internal class TrainFactory : CargoFactory |
| 52 | + { |
| 53 | + public override ICargo CreateCargo() |
| 54 | + { |
| 55 | + var cargo = new Train(); |
| 56 | + TrainMethod(); |
| 57 | + return cargo; |
| 58 | + } |
| 59 | + |
| 60 | + private void TrainMethod() |
| 61 | + { |
| 62 | + throw new NotImplementedException(); |
| 63 | + } |
| 64 | + } |
| 65 | + |
| 66 | + internal class ShipFactory : CargoFactory |
| 67 | + { |
| 68 | + public ShipFactory(string origin, string destination) |
| 69 | + { |
| 70 | + Origin = origin; |
| 71 | + Destination = destination; |
| 72 | + } |
| 73 | + |
| 74 | + public string Origin { get; set; } |
| 75 | + public string Destination { get; set; } |
| 76 | + public override ICargo CreateCargo() |
| 77 | + { |
| 78 | + return new Ship(Origin, Destination); |
| 79 | + } |
| 80 | + } |
| 81 | + |
| 82 | + internal class AirFactory : CargoFactory |
| 83 | + { |
| 84 | + private static Air Air { get; set; } |
| 85 | + public override ICargo CreateCargo() |
| 86 | + { |
| 87 | + if (Air is null) |
| 88 | + { |
| 89 | + Air = new Air(); |
| 90 | + |
| 91 | + } |
| 92 | + return Air; |
| 93 | + } |
| 94 | + } |
| 95 | + |
| 96 | + internal class Train : ICargo |
| 97 | + { |
| 98 | + |
| 99 | + } |
| 100 | + |
| 101 | + internal class Ship : ICargo |
| 102 | + { |
| 103 | + public Ship(string origin, string destination) |
| 104 | + { |
| 105 | + Origin = origin; |
| 106 | + Destination = destination; |
| 107 | + } |
| 108 | + |
| 109 | + public string Origin { get; } |
| 110 | + public string Destination { get; } |
| 111 | + } |
| 112 | + |
| 113 | + internal class Air : ICargo |
| 114 | + { |
| 115 | + |
| 116 | + } |
| 117 | + |
| 118 | + public interface ICargo |
| 119 | + { |
| 120 | + |
| 121 | + } |
| 122 | +} |
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