Add Factory Design pattern

Factory design patter is added
Some print line for place holder
Need to imiplement Private instances

src/Archive/.vscode/launch.json

@@ -0,0 +1,26 @@
+{
+    "version": "0.2.0",
+    "configurations": [
+        {
+            // Use IntelliSense to find out which attributes exist for C# debugging
+            // Use hover for the description of the existing attributes
+            // For further information visit https://github.com/OmniSharp/omnisharp-vscode/blob/master/debugger-launchjson.md
+            "name": ".NET Core Launch (console)",
+            "type": "coreclr",
+            "request": "launch",
+            "preLaunchTask": "build",
+            // If you have changed target frameworks, make sure to update the program path.
+            "program": "${workspaceFolder}/app/bin/Debug/net6.0/app.dll",
+            "args": [],
+            "cwd": "${workspaceFolder}/app",
+            // For more information about the 'console' field, see https://aka.ms/VSCode-CS-LaunchJson-Console
+            "console": "internalConsole",
+            "stopAtEntry": false
+        },
+        {
+            "name": ".NET Core Attach",
+            "type": "coreclr",
+            "request": "attach"
+        }
+    ]
+}

src/Archive/.vscode/tasks.json

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+{
+    "version": "2.0.0",
+    "tasks": [
+        {
+            "label": "build",
+            "command": "dotnet",
+            "type": "process",
+            "args": [
+                "build",
+                "${workspaceFolder}/app/app.csproj",
+                "/property:GenerateFullPaths=true",
+                "/consoleloggerparameters:NoSummary"
+            ],
+            "problemMatcher": "$msCompile"
+        },
+        {
+            "label": "publish",
+            "command": "dotnet",
+            "type": "process",
+            "args": [
+                "publish",
+                "${workspaceFolder}/app/app.csproj",
+                "/property:GenerateFullPaths=true",
+                "/consoleloggerparameters:NoSummary"
+            ],
+            "problemMatcher": "$msCompile"
+        },
+        {
+            "label": "watch",
+            "command": "dotnet",
+            "type": "process",
+            "args": [
+                "watch",
+                "run",
+                "${workspaceFolder}/app/app.csproj",
+                "/property:GenerateFullPaths=true",
+                "/consoleloggerparameters:NoSummary"
+            ],
+            "problemMatcher": "$msCompile"
+        }
+    ]
+}

src/Archive/app/ArchiveController.cs

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+using System;
+
+namespace app
+{
+    class ArchiveController{
+        static void Main(string[] args)
+        {
+            string dsName = "SQL";
+            string cmd = "";
+            Console.WriteLine("Hello World!");    
+
+            //SQLConnection myconnection = new SQLConnection();
+
+            // Creating a DataSource Factory to make Data sources
+            DataSourceFactory dsFactory = new DataSourceFactory();
+
+            // Creating a SQL data source objects to gain access to the SQL database
+            IDataSource dataSource = dsFactory.getDataSource("SQL");
+
+            // Read from the database
+            dataSource.ReadData("a");
+
+            // Write to the database
+            dataSource.WriteData("Insert newName");
+
+            // Update the datasource
+            dataSource.UpdateData();
+
+            // Delete from the datasource
+            dataSource.DeleteData();
+
+            Console.WriteLine("-----------------");
+            // Creating a Data Source for text files
+            IDataSource txtSource = dsFactory.getDataSource("txt");
+
+            // Read from the database
+            txtSource.ReadData("a");
+
+            // Write to the database
+            txtSource.WriteData("a");
+
+            // Update the datasource
+            txtSource.UpdateData();
+
+            // Delete from the datasource
+            txtSource.DeleteData();
+
+        }
+    }
+
+}

src/Archive/app/DataSourceFactory.cs

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+
+class DataSourceFactory{
+    public IDataSource getDataSource(string name){
+        
+        if (name == "SQL"){
+            return new SQLSource();
+        }
+        else if (String.Equals(name, "TXT", StringComparison.OrdinalIgnoreCase)){
+            return new TxtSource();
+        }
+        else if(name == "XML"){
+            return null;
+        }
+        else {
+            return null;
+        }
+    }
+}

src/Archive/app/Factory.cs

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+
+abstract class Factory{
+
+    //Method to make a datasource object
+    public abstract IDataSource getDataSource(string name);
+}

src/Archive/app/IDataSource.cs

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+
+interface IDataSource{
+
+    // Method for reading data, return 0 for sucessful operation
+    int ReadData(string cmd);
+
+    // Method for Writing data to a data source
+    int WriteData(string cmd);
+
+    //Method for deleteing data from a data source, 0 for successful
+    int DeleteData();
+
+    // Method for updating data from a data source, 0 for sucessful
+    int UpdateData();
+}

src/Archive/app/SQLSource.cs

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+
+class SQLSource  : IDataSource{ 
+    //private SQLConnection conn;
+
+    // public SQLSource(){
+    //     conn = new SQLConnection("usernamePasword");
+    // }
+
+    public int ReadData(string cmd){
+        try{
+            // conn.open();
+            // conn.Execute();
+            Console.WriteLine("Access a SQL database");
+            Console.WriteLine("Select * from archive");
+
+            // while (myReader)
+                // Print to console
+            // conn.close();
+            return 0;
+        }
+        catch (Exception e){
+            Console.WriteLine(e.Message);
+            return -1;
+        }
+    }
+
+    public int WriteData(string cmd){
+        Console.WriteLine("Writing data to a SQL database");
+        return 0;
+    }
+
+    public int DeleteData() {
+        Console.WriteLine("Deleting data from a SQL database");
+        return 0;
+    }
+
+    public int UpdateData() {
+        Console.WriteLine("Update data to a SQL database");
+        return 0;
+    }
+}

src/Archive/app/TxtSource.cs

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+
+class TxtSource : IDataSource{
+    private string fileName;
+    public int ReadData(string a){
+        try{
+            Console.WriteLine("Access a text file");
+            return 0;
+        }
+        catch (Exception e){
+            Console.WriteLine(e.Message);
+            return -1;
+        }
+    }
+
+    public int WriteData(string cmd){
+        Console.WriteLine("Writing data to a text file");
+        return 0;
+    }
+
+    public int DeleteData() {
+        Console.WriteLine("Deleting data from a text file");
+        return 0;
+    }
+
+    public int UpdateData() {
+        Console.WriteLine("Update data to a text file");
+        return 0;
+    }
+}

src/Archive/app/app.csproj

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+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>net6.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+</Project>