REPOSITORY PATTERN

Author: SonicTheCat

EFCore - Self-Learning/Repository Pattern/Queries.sln

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+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio 2013
+VisualStudioVersion = 12.0.31101.0
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Queries", "Queries\Queries.csproj", "{D1776DED-C59A-4F8A-8C31-96EAE15BDF5A}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|Any CPU = Debug|Any CPU
+		Release|Any CPU = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{D1776DED-C59A-4F8A-8C31-96EAE15BDF5A}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{D1776DED-C59A-4F8A-8C31-96EAE15BDF5A}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{D1776DED-C59A-4F8A-8C31-96EAE15BDF5A}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{D1776DED-C59A-4F8A-8C31-96EAE15BDF5A}.Release|Any CPU.Build.0 = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+EndGlobal

EFCore - Self-Learning/Repository Pattern/Queries/App.config

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+<?xml version="1.0" encoding="utf-8"?>
+<configuration>
+  <configSections>
+        <!-- For more information on Entity Framework configuration, visit http://go.microsoft.com/fwlink/?LinkID=237468 -->
+    <!-- For more information on Entity Framework configuration, visit http://go.microsoft.com/fwlink/?LinkID=237468 --></configSections>
+  <startup>
+    <supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.5" />
+  </startup>
+  <connectionStrings>
+    <add name="PlutoContext" connectionString="data source=.\SQLEXPRESS;initial catalog=Pluto_Queries;integrated security=True;MultipleActiveResultSets=True;App=EntityFramework" providerName="System.Data.SqlClient" />
+  </connectionStrings>
+</configuration>

EFCore - Self-Learning/Repository Pattern/Queries/Core/Domain/Author.cs

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+using System.Collections.Generic;
+
+namespace Queries.Core.Domain
+{
+    public class Author
+    {
+        public Author()
+        {
+            Courses = new HashSet<Course>();
+        }
+
+        public int Id { get; set; }
+
+        public string Name { get; set; }
+
+        public virtual ICollection<Course> Courses { get; set; }
+    }
+}

EFCore - Self-Learning/Repository Pattern/Queries/Core/Domain/Course.cs

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+using System.Collections.Generic;
+
+namespace Queries.Core.Domain
+{
+    public class Course
+    {
+        public Course()
+        {
+            Tags = new HashSet<Tag>();
+        }
+
+        public int Id { get; set; }
+
+        public string Name { get; set; }
+
+        public string Description { get; set; }
+
+        public int Level { get; set; }
+
+        public float FullPrice { get; set; }
+
+        public virtual Author Author { get; set; }
+
+        public int AuthorId { get; set; }
+
+        public virtual ICollection<Tag> Tags { get; set; }
+
+        public Cover Cover { get; set; }
+
+        public bool IsBeginnerCourse
+        {
+            get { return Level == 1; }
+        }
+    }
+}

EFCore - Self-Learning/Repository Pattern/Queries/Core/Domain/Cover.cs

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+namespace Queries.Core.Domain
+{
+    public class Cover
+    {
+        public int Id { get; set; }
+        public Course Course { get; set; }
+    }
+}

EFCore - Self-Learning/Repository Pattern/Queries/Core/Domain/Tag.cs

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+using System.Collections.Generic;
+
+namespace Queries.Core.Domain
+{
+    public class Tag
+    {
+        public Tag()
+        {
+            Courses = new HashSet<Course>();
+        }
+
+        public int Id { get; set; }
+
+        public string Name { get; set; }
+
+        public virtual ICollection<Course> Courses { get; set; }
+    }
+}

EFCore - Self-Learning/Repository Pattern/Queries/Core/IUnitOfWork.cs

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+using Queries.Core.Repositories;
+using System;
+
+namespace Queries.Core
+{
+    public interface IUnitOfWork : IDisposable
+    {
+        ICourseRepository Courses { get; }
+        IAuthorRepository Authors { get; }
+        int Complete();
+    }
+}

EFCore - Self-Learning/Repository Pattern/Queries/Core/Repositories/IAuthorRepository.cs

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+using Queries.Core.Domain;
+
+namespace Queries.Core.Repositories
+{
+    public interface IAuthorRepository : IRepository<Author>
+    {
+        Author GetAuthorWithCourses(int id);
+    }
+}

EFCore - Self-Learning/Repository Pattern/Queries/Core/Repositories/ICourseRepository.cs

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+using Queries.Core.Domain;
+using System.Collections.Generic;
+
+namespace Queries.Core.Repositories
+{
+    public interface ICourseRepository : IRepository<Course>
+    {
+        IEnumerable<Course> GetTopSellingCourses(int count);
+        IEnumerable<Course> GetCoursesWithAuthors(int pageIndex, int pageSize);
+    }
+}

EFCore - Self-Learning/Repository Pattern/Queries/Core/Repositories/IRepository.cs

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+using System;
+using System.Collections.Generic;
+using System.Linq.Expressions;
+
+namespace Queries.Core.Repositories
+{
+    public interface IRepository<TEntity> where TEntity : class
+    {
+        TEntity Get(int id);
+        IEnumerable<TEntity> GetAll();
+        IEnumerable<TEntity> Find(Expression<Func<TEntity, bool>> predicate);
+
+        // This method was not in the videos, but I thought it would be useful to add.
+        TEntity SingleOrDefault(Expression<Func<TEntity, bool>> predicate);
+
+        void Add(TEntity entity);
+        void AddRange(IEnumerable<TEntity> entities);
+        
+        void Remove(TEntity entity);
+        void RemoveRange(IEnumerable<TEntity> entities);
+    }
+}