GoF - Factory

• GoF (3)
• Creational Patterns 
• UML
• 
• Code
• 實作 Adventurer

/// 

/// interface: Adventurer (Product)
/// 
public interface IAdventurer
{
    // 方法
    string getType();
}

• 實作 Archer

/// 

/// Archer 繼承 interface Adventurer (ConcreteProduct)
/// 
public class Archer : IAdventurer
{
    // 實作 getType 方法
    public string getType()
    {
        string message = "I am a Archer";
        System.Console.WriteLine(message);
        return message;
    }
}

• 實作 Warrior

/// 

/// Warrior 繼承 interface Adventurer
/// 
public class Warrior : IAdventurer
{
    // 實作 getType 方法
    public string getType()
    {
        string message = "I am a Warrior";
        System.Console.WriteLine(message);
        return message;
    }
}

• 實作 TrainingCamp

/// 

/// interface: TrainingCamp (Factory)
/// 
public interface ITrainingCamp 
{
    Adventurer trainAdventurer();
}

• 實作 ArcherTrainingCmap

/// 

/// ArcherTrainingCmap 繼承 interface ITrainingCamp (ConcreteFactory)
/// 
public class ArcherTrainingCmap : ITrainingCamp
{
    public Adventurer trainAdventurer()
    {
        System.Console.WriteLine("train a Archer");
        return new Archer();
    }
}

• 實作 WarriorTrainingCmap

/// 

/// WarriorTrainingCmap 繼承 interface ITrainingCamp (ConcreteFactory)
/// 
public class WarriorTrainingCmap : ITrainingCamp
{
    public Adventurer trainAdventurer()
    {
        System.Console.WriteLine("train a Warrior");
        return new Warrior();
    }
}

• Sample Code

public class SampleCode 
{
    public void Demo()
    {
        // Archer Training Camp
        TrainingCamp trainingCmap = new ArcherTrainingCamp();
        Adventurer memberA = trainingCmap.trainAdventurer();

        // Warrior Training Camp
        TrainingCamp trainingCmap = new WarriorTrainingCmap();        
        Adventurer memberB = trainingCmap.trainAdventurer();

        System.Console.WriteLine(memberA.getType());
        System.Console.WriteLine(memberB.getType());
    }
}

Ref

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