class1.cs

来自DoFactory的设计模式, 由于是本人根据已有代码创建,没有NETOptimized项

// Adapter pattern -- Real World example  

using System;

namespace DoFactory.GangOfFour.Adapter.RealWorld
{

    // MainApp test application 

    class MainApp
    {
        static void Main()
        {
            // Non-adapted chemical compound 
            Compound stuff = new Compound("Unknown");
            stuff.Display();

            // Adapted chemical compounds 
            Compound water = new RichCompound("Water");
            water.Display();

            Compound benzene = new RichCompound("Benzene");
            benzene.Display();

            Compound alcohol = new RichCompound("Alcohol");
            alcohol.Display();

            // Wait for user 
            Console.Read();
        }
    }

    // "Target" 

    class Compound
    {
        protected string name;
        protected float boilingPoint;
        protected float meltingPoint;
        protected double molecularWeight;
        protected string molecularFormula;

        // Constructor 
        public Compound(string name)
        {
            this.name = name;
        }

        public virtual void Display()
        {
            Console.WriteLine("\nCompound: {0} ------ ", name);
        }
    }

    // "Adapter" 

    class RichCompound : Compound
    {
        private ChemicalDatabank bank;

        // Constructor 
        public RichCompound(string name)
            : base(name)
        {
        }

        public override void Display()
        {
            // Adaptee 
            bank = new ChemicalDatabank();
            boilingPoint = bank.GetCriticalPoint(name, "B");
            meltingPoint = bank.GetCriticalPoint(name, "M");
            molecularWeight = bank.GetMolecularWeight(name);
            molecularFormula = bank.GetMolecularStructure(name);

            base.Display();
            Console.WriteLine(" Formula: {0}", molecularFormula);
            Console.WriteLine(" Weight : {0}", molecularWeight);
            Console.WriteLine(" Melting Pt: {0}", meltingPoint);
            Console.WriteLine(" Boiling Pt: {0}", boilingPoint);
        }
    }

    // "Adaptee" 

    class ChemicalDatabank
    {
        // The Databank 'legacy API' 
        public float GetCriticalPoint(string compound, string point)
        {
            float temperature = 0.0F;

            // Melting Point 
            if (point == "M")
            {
                switch (compound.ToLower())
                {
                    case "water": temperature = 0.0F; break;
                    case "benzene": temperature = 5.5F; break;
                    case "alcohol": temperature = -114.1F; break;
                }
            }
            // Boiling Point 
            else
            {
                switch (compound.ToLower())
                {
                    case "water": temperature = 100.0F; break;
                    case "benzene": temperature = 80.1F; break;
                    case "alcohol": temperature = 78.3F; break;
                }
            }
            return temperature;
        }

        public string GetMolecularStructure(string compound)
        {
            string structure = "";

            switch (compound.ToLower())
            {
                case "water": structure = "H20"; break;
                case "benzene": structure = "C6H6"; break;
                case "alcohol": structure = "C2H6O2"; break;
            }
            return structure;
        }

        public double GetMolecularWeight(string compound)
        {
            double weight = 0.0;
            switch (compound.ToLower())
            {
                case "water": weight = 18.015; break;
                case "benzene": weight = 78.1134; break;
                case "alcohol": weight = 46.0688; break;
            }
            return weight;
        }
    }
}