command pattern

DesignPattern/Command/App.config

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="utf-8" ?>
+<configuration>
+    <startup> 
+        <supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.8.1" />
+    </startup>
+</configuration>

DesignPattern/Command/Client.cs

@@ -0,0 +1,29 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace Command
+{
+    internal class Client
+    {
+        public static void HowToUse()
+        {
+            // Receiver 객체
+            StockBroker broker = new StockBroker();
+
+            // Invoker 객체
+            User user = new User();
+
+            // Command 객체
+            ICommand command = new StockCommand(broker, "MSFT", TxType.Buy, 150);
+
+            user.AddCommand(command);
+            user.AddCommand(broker, "AMZN", TxType.Sell, 2000);
+
+            // Command 실행 요청
+            user.ExecuteAll();
+        }
+    }
+}

DesignPattern/Command/Command.csproj

@@ -0,0 +1,59 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="15.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props" Condition="Exists('$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props')" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <ProjectGuid>{F34D75D4-7025-4CE3-AF7F-11117FA32F8B}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <RootNamespace>Command</RootNamespace>
+    <AssemblyName>Command</AssemblyName>
+    <TargetFrameworkVersion>v4.8.1</TargetFrameworkVersion>
+    <FileAlignment>512</FileAlignment>
+    <AutoGenerateBindingRedirects>true</AutoGenerateBindingRedirects>
+    <Deterministic>true</Deterministic>
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+    <PlatformTarget>AnyCPU</PlatformTarget>
+    <DebugSymbols>true</DebugSymbols>
+    <DebugType>full</DebugType>
+    <Optimize>false</Optimize>
+    <OutputPath>bin\Debug\</OutputPath>
+    <DefineConstants>DEBUG;TRACE</DefineConstants>
+    <ErrorReport>prompt</ErrorReport>
+    <WarningLevel>4</WarningLevel>
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+    <PlatformTarget>AnyCPU</PlatformTarget>
+    <DebugType>pdbonly</DebugType>
+    <Optimize>true</Optimize>
+    <OutputPath>bin\Release\</OutputPath>
+    <DefineConstants>TRACE</DefineConstants>
+    <ErrorReport>prompt</ErrorReport>
+    <WarningLevel>4</WarningLevel>
+  </PropertyGroup>
+  <ItemGroup>
+    <Reference Include="System" />
+    <Reference Include="System.Core" />
+    <Reference Include="System.Xml.Linq" />
+    <Reference Include="System.Data.DataSetExtensions" />
+    <Reference Include="Microsoft.CSharp" />
+    <Reference Include="System.Data" />
+    <Reference Include="System.Net.Http" />
+    <Reference Include="System.Xml" />
+  </ItemGroup>
+  <ItemGroup>
+    <Compile Include="Client.cs" />
+    <Compile Include="ICommand.cs" />
+    <Compile Include="Program.cs" />
+    <Compile Include="Properties\AssemblyInfo.cs" />
+    <Compile Include="StockBroker.cs" />
+    <Compile Include="StockCommand.cs" />
+    <Compile Include="TxType.cs" />
+    <Compile Include="User.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="App.config" />
+  </ItemGroup>
+  <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />
+</Project>

DesignPattern/Command/ICommand.cs

@@ -0,0 +1,13 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace Command
+{
+    internal interface ICommand
+    {
+        void Execute();
+    }
+}

DesignPattern/Command/Program.cs

@@ -0,0 +1,28 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace Command
+{
+    /*
+     * 카테고리: 행위 패턴
+     * 개요: 어떤 행위를 실행하는 요청을 명령 객체로 캡슐화하여 전달함
+     * 명령 요청을 즉시 요청할 수도 있지만, 명령 객체를 큐에 쌓아 배치로 한번에 실행할 수도 있고,
+     * 반대 명령을 내려 Undo 하는 기능을 제공할 수 있음
+     * 
+     * Invoker: 명령을 실행할 때를 결정
+     * Command: 명령을 표현
+     * Receiver: 명령을 받아 일련의 작업을 수행
+     */
+    internal class Program
+    {
+        static void Main(string[] args)
+        {
+            Client.HowToUse();
+
+            Console.ReadKey();
+        }
+    }
+}

DesignPattern/Command/Properties/AssemblyInfo.cs

@@ -0,0 +1,36 @@
+using System.Reflection;
+using System.Runtime.CompilerServices;
+using System.Runtime.InteropServices;
+
+// 어셈블리에 대한 일반 정보는 다음 특성 집합을 통해 
+// 제어됩니다. 어셈블리와 관련된 정보를 수정하려면
+// 이러한 특성 값을 변경하세요.
+[assembly: AssemblyTitle("Command")]
+[assembly: AssemblyDescription("")]
+[assembly: AssemblyConfiguration("")]
+[assembly: AssemblyCompany("")]
+[assembly: AssemblyProduct("Command")]
+[assembly: AssemblyCopyright("Copyright ©  2022")]
+[assembly: AssemblyTrademark("")]
+[assembly: AssemblyCulture("")]
+
+// ComVisible을 false로 설정하면 이 어셈블리의 형식이 COM 구성 요소에 
+// 표시되지 않습니다. COM에서 이 어셈블리의 형식에 액세스하려면
+// 해당 형식에 대해 ComVisible 특성을 true로 설정하세요.
+[assembly: ComVisible(false)]
+
+// 이 프로젝트가 COM에 노출되는 경우 다음 GUID는 typelib의 ID를 나타냅니다.
+[assembly: Guid("f34d75d4-7025-4ce3-af7f-11117fa32f8b")]
+
+// 어셈블리의 버전 정보는 다음 네 가지 값으로 구성됩니다.
+//
+//      주 버전
+//      부 버전 
+//      빌드 번호
+//      수정 버전
+//
+// 모든 값을 지정하거나 아래와 같이 '*'를 사용하여 빌드 번호 및 수정 번호를
+// 기본값으로 할 수 있습니다.
+// [assembly: AssemblyVersion("1.0.*")]
+[assembly: AssemblyVersion("1.0.0.0")]
+[assembly: AssemblyFileVersion("1.0.0.0")]

DesignPattern/Command/StockBroker.cs

@@ -0,0 +1,16 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace Command
+{
+    internal class StockBroker
+    {
+        public void Process(string stockSymbol, TxType txType, int qty)
+        {
+            Console.WriteLine($"{txType.ToString()}, {stockSymbol}, {qty}");
+        }
+    }
+}

DesignPattern/Command/StockCommand.cs

@@ -0,0 +1,29 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace Command
+{
+    internal class StockCommand : ICommand
+    {
+        private StockBroker _broker;
+        private string symbol;
+        private TxType txType;
+        private int qty;
+
+        public StockCommand(StockBroker broker, string symbol, TxType txType, int qty)
+        {
+            _broker = broker;
+            this.symbol = symbol;
+            this.txType = txType;
+            this.qty = qty;
+        }
+
+        public void Execute()
+        {
+            _broker.Process(symbol, txType, qty);
+        }
+    }
+}

DesignPattern/Command/TxType.cs

@@ -0,0 +1,14 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace Command
+{
+    internal enum TxType
+    {
+        Buy,
+        Sell,
+    }
+}

DesignPattern/Command/User.cs

@@ -0,0 +1,32 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace Command
+{
+    internal class User
+    {
+        private List<ICommand> _commands = new List<ICommand>();
+
+        public void AddCommand(ICommand command)
+        {
+            _commands.Add(command);
+        }
+
+        public void AddCommand(StockBroker broker, string symbol, TxType txType, int qty)
+        {
+            ICommand command = new StockCommand(broker, symbol, txType, qty);
+            _commands.Add(command);
+        }
+
+        public void ExecuteAll()
+        {
+            foreach (ICommand cmd in _commands)
+            {
+                cmd.Execute();
+            }
+        }
+    }
+}

DesignPattern/DesignPattern.sln

@@ -35,6 +35,8 @@ Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Strategy", "Strategy\Strate
 EndProject
 Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "ChainOfResponsibility", "ChainOfResponsibility\ChainOfResponsibility.csproj", "{808A59EA-EF38-4D24-B4C9-ADD93D21EDDC}"
 EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Command", "Command\Command.csproj", "{F34D75D4-7025-4CE3-AF7F-11117FA32F8B}"
+EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|Any CPU = Debug|Any CPU
@@ -105,6 +107,10 @@ Global
 		{808A59EA-EF38-4D24-B4C9-ADD93D21EDDC}.Debug|Any CPU.Build.0 = Debug|Any CPU
 		{808A59EA-EF38-4D24-B4C9-ADD93D21EDDC}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{808A59EA-EF38-4D24-B4C9-ADD93D21EDDC}.Release|Any CPU.Build.0 = Release|Any CPU
+		{F34D75D4-7025-4CE3-AF7F-11117FA32F8B}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{F34D75D4-7025-4CE3-AF7F-11117FA32F8B}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{F34D75D4-7025-4CE3-AF7F-11117FA32F8B}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{F34D75D4-7025-4CE3-AF7F-11117FA32F8B}.Release|Any CPU.Build.0 = Release|Any CPU
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE