AutofacSamples4 implemented

AutoFacSamles.sln

@@ -3,7 +3,17 @@ Microsoft Visual Studio Solution File, Format Version 12.00
 # Visual Studio Version 16
 VisualStudioVersion = 16.0.30717.126
 MinimumVisualStudioVersion = 10.0.40219.1
-Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "AutoFacSamles", "AutoFacSamles\AutoFacSamles.csproj", "{2CFA4809-16F7-4DB9-B4BB-CF60945656E5}"
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "AutoFacSamles", "AutoFacSamles\AutoFacSamles.csproj", "{2CFA4809-16F7-4DB9-B4BB-CF60945656E5}"
+EndProject
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "PatternDemoCore", "PatternDemoCore\PatternDemoCore.csproj", "{D8041EF1-F2AC-4A04-A7A5-56E2CB6F249C}"
+EndProject
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "PatternDemoCore2", "PatternDemo2\PatternDemoCore2.csproj", "{2152A909-E97C-453A-8A6C-869F7987D7B5}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "AutoFacSamples2", "AutoFacSamples2\AutoFacSamples2.csproj", "{0EB88BA8-3B88-4142-A6D3-07F72120488D}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "AutofacSamples3", "AutofacSamples3\AutofacSamples3.csproj", "{4EE75D74-3696-41D7-A5D0-A128956FBCBB}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "AutofacSamples4", "AutofacSample3\AutofacSamples4.csproj", "{9F3E52C4-985F-47FD-9949-B5539200069F}"
 EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
@@ -15,6 +25,26 @@ Global
 		{2CFA4809-16F7-4DB9-B4BB-CF60945656E5}.Debug|Any CPU.Build.0 = Debug|Any CPU
 		{2CFA4809-16F7-4DB9-B4BB-CF60945656E5}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{2CFA4809-16F7-4DB9-B4BB-CF60945656E5}.Release|Any CPU.Build.0 = Release|Any CPU
+		{D8041EF1-F2AC-4A04-A7A5-56E2CB6F249C}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{D8041EF1-F2AC-4A04-A7A5-56E2CB6F249C}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{D8041EF1-F2AC-4A04-A7A5-56E2CB6F249C}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{D8041EF1-F2AC-4A04-A7A5-56E2CB6F249C}.Release|Any CPU.Build.0 = Release|Any CPU
+		{2152A909-E97C-453A-8A6C-869F7987D7B5}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{2152A909-E97C-453A-8A6C-869F7987D7B5}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{2152A909-E97C-453A-8A6C-869F7987D7B5}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{2152A909-E97C-453A-8A6C-869F7987D7B5}.Release|Any CPU.Build.0 = Release|Any CPU
+		{0EB88BA8-3B88-4142-A6D3-07F72120488D}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{0EB88BA8-3B88-4142-A6D3-07F72120488D}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{0EB88BA8-3B88-4142-A6D3-07F72120488D}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{0EB88BA8-3B88-4142-A6D3-07F72120488D}.Release|Any CPU.Build.0 = Release|Any CPU
+		{4EE75D74-3696-41D7-A5D0-A128956FBCBB}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{4EE75D74-3696-41D7-A5D0-A128956FBCBB}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{4EE75D74-3696-41D7-A5D0-A128956FBCBB}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{4EE75D74-3696-41D7-A5D0-A128956FBCBB}.Release|Any CPU.Build.0 = Release|Any CPU
+		{9F3E52C4-985F-47FD-9949-B5539200069F}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{9F3E52C4-985F-47FD-9949-B5539200069F}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{9F3E52C4-985F-47FD-9949-B5539200069F}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{9F3E52C4-985F-47FD-9949-B5539200069F}.Release|Any CPU.Build.0 = Release|Any CPU
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE

AutoFacSamles/AutoFacSamles.csproj

@@ -2,7 +2,7 @@
 
   <PropertyGroup>
     <OutputType>Exe</OutputType>
-    <TargetFramework>netcoreapp3.1</TargetFramework>
+    <TargetFramework>net5.0</TargetFramework>
   </PropertyGroup>
 
   <ItemGroup>

AutoFacSamles/Program.cs

@@ -1,4 +1,5 @@
 using Autofac;
+using Autofac.Core;
 using System;
 using System.Collections.Generic;
 
@@ -49,6 +50,20 @@ namespace AutoFacSamles
         }
     }
 
+    public class SMSLog : ILog
+    {
+        private readonly string phoneNumber;
+
+        public SMSLog(string phoneNumber)
+        {
+            this.phoneNumber = phoneNumber;
+        }
+        public void Write(string message)
+        {
+            Console.WriteLine($"SMS to {phoneNumber} : {message}");
+        }
+    }
+
     public class Car
     {
         private Engine engine;
@@ -79,14 +94,36 @@ namespace AutoFacSamles
         {
             var builder = new ContainerBuilder();
 
-            // IList<T> --> List<T>
+            // Named parameter
-            // IList<int> --> List<int>
+            //builder.RegisterType<SMSLog>()
-            builder.RegisterGeneric(typeof(List<>)).As(typeof(IList<>));
+            //    .As<ILog>()
+            //    .WithParameter("phoneNumber", "+173874872643");
 
-            IContainer container = builder.Build();
+            // Typed parameter
+            //builder.RegisterType<SMSLog>()
+            //    .As<ILog>()
+            //    .WithParameter(new TypedParameter(typeof(string), "+173874872643"));
+
+            // resolved parameter
+            //builder.RegisterType<SMSLog>()
+            //    .As<ILog>()
+            //    .WithParameter(
+            //   new ResolvedParameter(
+            //       // predicate
+            //       (pi, ctx) => pi.ParameterType == typeof(string) && pi.Name == "phoneNumber",
+            //       (pi, ctx) => "+173874872643"
+            //       )
+            //    );
+
+            Random random = new Random();
+            builder.Register((c, p) => new SMSLog(p.Named<string>("phoneNumber")))
+                .As<ILog>();
+            Console.WriteLine("About to build container ...");
+            var container = builder.Build();
+
+            var log = container.Resolve<ILog>(new NamedParameter("phoneNumber", random.Next().ToString()));
+            log.Write("Testing");
 
-            var myList = container.Resolve<IList<int>>();
-            Console.WriteLine(myList.GetType());
         }
     }
 }

AutoFacSamples2/AutoFacSamples2.csproj

@@ -0,0 +1,12 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>net5.0</TargetFramework>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Autofac" Version="6.0.0" />
+  </ItemGroup>
+
+</Project>

AutoFacSamples2/Program.cs

@@ -0,0 +1,58 @@
+using Autofac;
+using System;
+
+namespace AutoFacSamples2
+{
+    public class Parent
+    {
+        public override string ToString()
+        {
+            return "I am your father";
+        }
+    }
+
+    public class Child
+    {
+        public string Name { get; set; }
+        public Parent Parent { get; set; }
+
+        public void SetParent(Parent parent)
+        {
+            Parent = parent;
+        }
+    }
+
+
+    internal class Program
+    {
+        static void Main(string[] args)
+        {
+            var builder = new ContainerBuilder();
+            builder.RegisterType<Parent>();
+
+            //1/builder.RegisterType<Child>().PropertiesAutowired();
+
+            //2/builder.RegisterType<Child>()
+            //2/    .WithProperty("Parent", new Parent());
+
+            //3/builder.Register(c =>
+            //3/{
+            //3/    var child = new Child();
+            //3/    child.SetParent(c.Resolve<Parent>());
+            //3/    return child;
+            //3/});
+
+            builder.RegisterType<Child>()
+                .OnActivated(e =>
+                {
+                    var p = e.Context.Resolve<Parent>();
+                    e.Instance.SetParent(p);
+                });
+
+
+            var container = builder.Build();
+            var parent = container.Resolve<Child>().Parent;
+            Console.WriteLine(parent);
+        }
+    }
+}

AutofacSample3/AutofacSamples4.csproj

@@ -0,0 +1,8 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>netcoreapp3.1</TargetFramework>
+  </PropertyGroup>
+
+</Project>

AutofacSample3/Program.cs

@@ -0,0 +1,53 @@
+using System;
+
+namespace AutofacSamples4
+{
+
+    public interface ILog
+    {
+        void Write(string message);
+    }
+
+    public class ConsoleLog : ILog
+    {
+        public ConsoleLog()
+        {
+            Console.WriteLine($"Console log created at {DateTime.Now.Ticks}");
+        }
+        public void Write(string message)
+        {
+            Console.WriteLine(message);
+        }
+
+        public void Dispose()
+        {
+            Console.WriteLine($"Console logger no longer required");
+        }
+
+    }
+
+    public class SMSLog : ILog
+    {
+        private readonly string phoneNumber;
+
+        public SMSLog(string phoneNumber)
+        {
+            this.phoneNumber = phoneNumber;
+        }
+        public void Write(string message)
+        {
+            Console.WriteLine($"SMS to {phoneNumber} : {message}");
+        }
+        public void Dispose()
+        {
+        }
+    }
+
+    class Program
+    {
+        static void Main(string[] args)
+        {
+            Console.WriteLine("Hello World!");
+        }
+    }
+}

AutofacSamples3/AutofacSamples3.csproj

@@ -0,0 +1,12 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>netcoreapp3.1</TargetFramework>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Autofac" Version="6.0.0" />
+  </ItemGroup>
+
+</Project>

AutofacSamples3/Program.cs

@@ -0,0 +1,133 @@
+using Autofac;
+using System;
+using System.Reflection;
+
+namespace AutofacSamples3
+{
+
+    public interface ILog
+    {
+        void Write(string message);
+    }
+
+    public class ConsoleLog : ILog
+    {
+        public void Write(string message)
+        {
+            Console.WriteLine(message);
+        }
+    }
+
+    public class EmailLog : ILog
+    {
+        private const string adminEmail = "tfoman@oeman.se";
+        public void Write(string message)
+        {
+            Console.WriteLine($"Email sent to {adminEmail} : {message}");
+        }
+    }
+
+    public class Engine
+    {
+        private ILog log;
+        private int id;
+
+        public Engine(ILog log, int id)
+        {
+            this.log = log;
+            this.id = id;
+        }
+
+        public Engine(ILog log)
+        {
+            this.log = log;
+            id = new Random().Next();
+        }
+
+        public void Ahead(int power)
+        {
+            log.Write($"Engine [{id}] ahead {power}");
+        }
+    }
+
+    public class SMSLog : ILog
+    {
+        private readonly string phoneNumber;
+
+        public SMSLog(string phoneNumber)
+        {
+            this.phoneNumber = phoneNumber;
+        }
+        public void Write(string message)
+        {
+            Console.WriteLine($"SMS to {phoneNumber} : {message}");
+        }
+    }
+
+    public class Car
+    {
+        private Engine engine;
+        private ILog log;
+
+        public Car(Engine engine)
+        {
+            this.engine = engine;
+            this.log = new EmailLog();
+        }
+
+        public Car(Engine engine, ILog log)
+        {
+            this.engine = engine;
+            this.log = log;
+        }
+
+        public void Go()
+        {
+            engine.Ahead(100);
+            log.Write("Car going forward...");
+        }
+    }
+
+    public class Parent
+    {
+        public override string ToString()
+        {
+            return "I am your father";
+        }
+    }
+
+    public class Child
+    {
+        public string Name { get; set; }
+        public Parent Parent { get; set; }
+
+        public void SetParent(Parent parent)
+        {
+            Parent = parent;
+        }
+    }
+
+    public class ParentChildModule : Autofac.Module
+    {
+        protected override void Load(ContainerBuilder builder)
+        {
+            builder.RegisterType<Parent>();
+            builder.Register(c => new Child() { Parent = c.Resolve<Parent>() });
+        }
+    }
+
+
+    internal class Program
+    {
+        public static void Main(string[] args)
+        {
+            var builder = new ContainerBuilder();
+            //builder.RegisterAssemblyModules(typeof(Program).Assembly);
+            builder.RegisterAssemblyModules<ParentChildModule>(typeof(Program).Assembly);
+
+            var container = builder.Build();
+            Console.WriteLine(container.Resolve<Child>().Parent);
+
+        }
+    }
+}

PatternDemo2/PatternDemoCore2.csproj

@@ -0,0 +1,12 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>net5.0</TargetFramework>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Autofac" Version="6.0.0" />
+  </ItemGroup>
+
+</Project>

PatternDemo2/Program.cs

@@ -0,0 +1,58 @@
+using Autofac;
+using System;
+
+namespace PatternDemoCore
+{
+
+    public class Entity
+    {
+        public delegate Entity Factory();
+
+        private static Random random = new Random();
+        private int number;
+
+        public Entity()
+        {
+            number = random.Next();
+        }
+
+        public override string ToString()
+        {
+            return $"test {number}";
+        }
+    }
+
+    public class ViewModel
+    {
+        private readonly Entity.Factory entityFactory;
+
+        public ViewModel(Entity.Factory entityFactory)
+        {
+            this.entityFactory = entityFactory;
+        }
+
+        public void Method()
+        {
+            var entity = entityFactory();
+            Console.WriteLine(entity);
+        }
+    }
+
+
+    public class  Demo
+    {
+        static void Main(string[] args)
+        {
+            var cb = new ContainerBuilder();
+            cb.RegisterType<Entity>().InstancePerDependency();
+            cb.RegisterType<ViewModel>();
+
+            var container = cb.Build();
+            var vm = container.Resolve<ViewModel>();
+
+            vm.Method();
+            vm.Method();
+
+        }
+    }
+}

PatternDemoCore/PatternDemoCore.csproj

@@ -0,0 +1,12 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>net5.0</TargetFramework>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Autofac" Version="6.0.0" />
+  </ItemGroup>
+
+</Project>

PatternDemoCore/Program.cs

@@ -0,0 +1,56 @@
+using Autofac;
+using System;
+
+namespace PatternDemoCore
+{
+
+    public class Service
+    {
+        public string DoSomething(int value)
+        {
+            return $"I have {value}";
+        }
+    }
+
+    public class DomainObject
+    {
+        private readonly Service service;
+        private readonly int value;
+
+        public delegate DomainObject Factory(int value);
+
+        public DomainObject(Service service, int value)
+        {
+            this.service = service;
+            this.value = value;
+        }
+
+        public override string ToString()
+        {
+            return service.DoSomething(value);
+        }
+    }
+
+    public class Demo
+    {
+        static void Main(string[] args)
+        {
+            var cb = new ContainerBuilder();
+            cb.RegisterType<Service>();
+            cb.RegisterType<DomainObject>();
+
+            var container = cb.Build();
+            var dobj = container.Resolve<DomainObject>(
+                new PositionalParameter(1, 42));
+            Console.WriteLine(dobj);
+
+            // Better way
+
+            var factory = container.Resolve<DomainObject.Factory>();
+            var dobj2 = factory(42);
+            Console.WriteLine(dobj2);
+
+
+        }
+    }
+}