added data access layer project to solution

ravi-shiva · Aug 8, 2017 · ebf75a6 · ebf75a6
1 parent ef39b3c
commit ebf75a6
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Showing 5 changed files with 113 additions and 1 deletion.
diff --git a/ContosoUniversity.Data/ApplicationContext.cs b/ContosoUniversity.Data/ApplicationContext.cs
@@ -0,0 +1,16 @@
+using Microsoft.EntityFrameworkCore;
+
+namespace ContosoUniversity.Data
+{
+    public class ApplicationContext : DbContext
+    {
+        public ApplicationContext(DbContextOptions<ApplicationContext> options) : base(options)
+        {
+        }
+
+        protected override void OnModelCreating(ModelBuilder modelBuilder)
+        {
+
+        }
+    }
+}
diff --git a/ContosoUniversity.Data/ApplicationContextFactory.cs b/ContosoUniversity.Data/ApplicationContextFactory.cs
@@ -0,0 +1,56 @@
+using Microsoft.EntityFrameworkCore;
+using Microsoft.EntityFrameworkCore.Infrastructure;
+using Microsoft.Extensions.Configuration;
+using System;
+
+namespace ContosoUniversity.Data
+{
+    // modeled from https://www.benday.com/2017/02/17/ef-core-migrations-without-hard-coding-a-connection-string-using-idbcontextfactory
+    public class ApplicationContextFactory : IDbContextFactory<ApplicationContext>
+    {
+        public ApplicationContext Create()
+        {
+            var environmentName = Environment.GetEnvironmentVariable("Hosting:Environment");
+            var basePath = AppContext.BaseDirectory;
+            return Create(basePath, environmentName);
+        }
+
+        private ApplicationContext Create(string basePath, string environmentName)
+        {
+            var builder = new ConfigurationBuilder()
+                .SetBasePath(basePath)
+                .AddJsonFile("settings.json")
+                .AddJsonFile($"settings.{environmentName}.json", true)
+                .AddEnvironmentVariables();
+
+            var config = builder.Build();
+
+            var connstr = config.GetConnectionString("DefaultConnection");
+
+            if (String.IsNullOrWhiteSpace(connstr))
+            {
+                throw new InvalidOperationException("Could not find a connection string named 'DefaultConnection'");
+            }
+
+            return Create(connstr);
+        }
+
+        private ApplicationContext Create(string connectionString)
+        {
+            if (string.IsNullOrEmpty(connectionString))
+            {
+                throw new ArgumentException($"{nameof(connectionString)} is null or empty");
+            }
+
+            var optionsBuilder = new DbContextOptionsBuilder<ApplicationContext>();
+            optionsBuilder.UseSqlServer(connectionString);
+
+            return new ApplicationContext(optionsBuilder.Options);
+        }
+
+        public ApplicationContext Create(DbContextFactoryOptions options)
+        {
+            return Create(options.ContentRootPath, options.EnvironmentName);
+        }
+    }
+}
diff --git a/ContosoUniversity.Data/ContosoUniversity.Data.csproj b/ContosoUniversity.Data/ContosoUniversity.Data.csproj
@@ -0,0 +1,29 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>netcoreapp1.1</TargetFramework>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <Compile Remove="Entities\**" />
+    <EmbeddedResource Remove="Entities\**" />
+    <None Remove="Entities\**" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Microsoft.EntityFrameworkCore" Version="1.1.2" />
+    <PackageReference Include="Microsoft.EntityFrameworkCore.Design" Version="1.1.2" />
+    <PackageReference Include="Microsoft.EntityFrameworkCore.InMemory" Version="1.1.2" />
+    <PackageReference Include="Microsoft.EntityFrameworkCore.SqlServer" Version="1.1.2" />
+    <PackageReference Include="Microsoft.Extensions.Configuration" Version="1.1.2" />
+    <PackageReference Include="Microsoft.Extensions.Configuration.EnvironmentVariables" Version="1.1.2" />
+    <PackageReference Include="Microsoft.Extensions.Configuration.FileExtensions" Version="1.1.2" />
+    <PackageReference Include="Microsoft.Extensions.Configuration.Json" Version="1.1.2" />
+    <PackageReference Include="System.Collections.Immutable" Version="1.3.1" />
+    <PackageReference Include="System.Diagnostics.DiagnosticSource" Version="4.4.0" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <DotNetCliToolReference Include="Microsoft.EntityFrameworkCore.Tools.DotNet" Version="1.0.0" />
+  </ItemGroup>
+</Project>
diff --git a/ContosoUniversity.Data/settings.json b/ContosoUniversity.Data/settings.json
@@ -0,0 +1,5 @@
+{
+  "ConnectionStrings": {
+    "DefaultConnection": "Server=(localdb)\\mssqllocaldb;Database=ContosoUniversity2017;Trusted_Connection=True;MultipleActiveResultSets=true"
+  }
+}
diff --git a/ContosoUniversity.sln b/ContosoUniversity.sln
@@ -3,7 +3,9 @@ Microsoft Visual Studio Solution File, Format Version 12.00
 # Visual Studio 15
 VisualStudioVersion = 15.0.26430.14
 MinimumVisualStudioVersion = 10.0.40219.1
-Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "ContosoUniversity", "ContosoUniversity\ContosoUniversity.csproj", "{C450EC87-4873-4C75-97C5-92185A54A950}"
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "ContosoUniversity", "ContosoUniversity\ContosoUniversity.csproj", "{C450EC87-4873-4C75-97C5-92185A54A950}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "ContosoUniversity.Data", "ContosoUniversity.Data\ContosoUniversity.Data.csproj", "{DF2790E6-5498-4C3B-86B2-B59ADEF7776F}"
 EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
@@ -15,6 +17,10 @@ Global
 		{C450EC87-4873-4C75-97C5-92185A54A950}.Debug|Any CPU.Build.0 = Debug|Any CPU
 		{C450EC87-4873-4C75-97C5-92185A54A950}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{C450EC87-4873-4C75-97C5-92185A54A950}.Release|Any CPU.Build.0 = Release|Any CPU
+		{DF2790E6-5498-4C3B-86B2-B59ADEF7776F}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{DF2790E6-5498-4C3B-86B2-B59ADEF7776F}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{DF2790E6-5498-4C3B-86B2-B59ADEF7776F}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{DF2790E6-5498-4C3B-86B2-B59ADEF7776F}.Release|Any CPU.Build.0 = Release|Any CPU
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE