odata

Author: christiannagel

API/BooksODataService/BooksODataService.sln

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+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio 15
+VisualStudioVersion = 15.0.27130.2027
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "BooksODataService", "BooksODataService\BooksODataService.csproj", "{B2FB43AC-1F6A-4C43-AD2C-A6069CEEC77E}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|Any CPU = Debug|Any CPU
+		Release|Any CPU = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{B2FB43AC-1F6A-4C43-AD2C-A6069CEEC77E}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{B2FB43AC-1F6A-4C43-AD2C-A6069CEEC77E}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{B2FB43AC-1F6A-4C43-AD2C-A6069CEEC77E}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{B2FB43AC-1F6A-4C43-AD2C-A6069CEEC77E}.Release|Any CPU.Build.0 = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+	GlobalSection(ExtensibilityGlobals) = postSolution
+		SolutionGuid = {46C2C8D5-119A-462D-9763-5D1F1ADAF4DB}
+	EndGlobalSection
+EndGlobal

API/BooksODataService/BooksODataService/BooksODataService.csproj

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+<Project Sdk="Microsoft.NET.Sdk.Web">
+
+  <PropertyGroup>
+    <TargetFramework>netcoreapp2.0</TargetFramework>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <Folder Include="wwwroot\" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Microsoft.AspNetCore.All" Version="2.0.5" />
+    <PackageReference Include="Microsoft.AspNetCore.OData" Version="7.0.0-Nightly201802051329" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <DotNetCliToolReference Include="Microsoft.VisualStudio.Web.CodeGeneration.Tools" Version="2.0.2" />
+  </ItemGroup>
+
+</Project>

API/BooksODataService/BooksODataService/Controllers/BooksController.cs

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+using BooksODataService.Models;
+using Microsoft.AspNet.OData;
+using Microsoft.AspNet.OData.Query;
+using Microsoft.EntityFrameworkCore;
+using System.Linq;
+
+namespace BooksODataService.Controllers
+{
+    public class BooksController : ODataController
+    {
+        private readonly BooksContext _booksContext;
+        public BooksController(BooksContext booksContext)
+        {
+            _booksContext = booksContext;
+        }
+
+        [EnableQuery(AllowedQueryOptions = AllowedQueryOptions.All)]
+        public IQueryable<Book> Get(ODataQueryOptions options)
+        {
+            ODataValidationSettings settings = new ODataValidationSettings()
+            {
+                MaxExpansionDepth = 4
+            };
+            options.Validate(settings);
+            var books = _booksContext.Books.Include(b => b.Chapters);
+            return books;
+        }
+
+        [EnableQuery()]
+        public SingleResult<Book> Get([FromODataUri] int key)
+        {
+            return SingleResult.Create(_booksContext.Books.Where(b => b.Id == key));
+        }
+
+    }
+
+}

API/BooksODataService/BooksODataService/Controllers/ChaptersController.cs

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+using BooksODataService.Models;
+using Microsoft.AspNet.OData;
+using Microsoft.AspNetCore.Mvc;
+using Microsoft.EntityFrameworkCore;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Threading.Tasks;
+
+namespace BooksODataService.Controllers
+{
+    public class ChaptersController : ODataController
+    {
+        private readonly BooksContext _booksContext;
+        public ChaptersController(BooksContext booksContext)
+        {
+            _booksContext = booksContext;
+        }
+
+        public IQueryable<BookChapter> Get() =>
+            _booksContext.Chapters.Include(c => c.Book);
+
+        [EnableQuery]
+        public SingleResult<BookChapter> Get([FromODataUri] int key) =>
+            SingleResult.Create(_booksContext.Chapters.Where(c => c.Id == key));
+
+    }
+}

API/BooksODataService/BooksODataService/Controllers/ValuesController.cs

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+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Threading.Tasks;
+using Microsoft.AspNetCore.Mvc;
+
+namespace BooksODataService.Controllers
+{
+    [Route("api/[controller]")]
+    public class ValuesController : Controller
+    {
+        // GET api/values
+        [HttpGet]
+        public IEnumerable<string> Get()
+        {
+            return new string[] { "value1", "value2" };
+        }
+
+        // GET api/values/5
+        [HttpGet("{id}")]
+        public string Get(int id)
+        {
+            return "value";
+        }
+
+        // POST api/values
+        [HttpPost]
+        public void Post([FromBody]string value)
+        {
+        }
+
+        // PUT api/values/5
+        [HttpPut("{id}")]
+        public void Put(int id, [FromBody]string value)
+        {
+        }
+
+        // DELETE api/values/5
+        [HttpDelete("{id}")]
+        public void Delete(int id)
+        {
+        }
+    }
+}

API/BooksODataService/BooksODataService/Models/Book.cs

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+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Threading.Tasks;
+
+namespace BooksODataService.Models
+{
+    public class Book
+    {
+        public Book()
+        {
+            Chapters = new List<BookChapter>();
+        }
+        public int Id { get; set; }
+        public string Isbn { get; set; }
+        public string Title { get; set; }
+        public string Publisher { get; set; }
+        public List<BookChapter> Chapters { get; set; }
+    }
+
+}

API/BooksODataService/BooksODataService/Models/BookChapter.cs

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+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Threading.Tasks;
+
+namespace BooksODataService.Models
+{
+    public class BookChapter
+    {
+        public int Id { get; set; }
+        public int BookId { get; set; }
+        public Book Book { get; set; }
+        public string Title { get; set; }
+        public int Number { get; set; }
+    }
+
+}

API/BooksODataService/BooksODataService/Models/BooksContext.cs

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+using Microsoft.EntityFrameworkCore;
+using Microsoft.EntityFrameworkCore.Metadata.Builders;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Threading.Tasks;
+
+namespace BooksODataService.Models
+{
+    public class BooksContext : DbContext
+    {
+        public BooksContext(DbContextOptions<BooksContext> options)
+            : base(options)
+        {
+
+        }
+
+        public DbSet<Book> Books { get; set; }
+        public DbSet<BookChapter> Chapters { get; set; }
+        protected override void OnModelCreating(ModelBuilder modelBuilder)
+        {
+            base.OnModelCreating(modelBuilder);
+            var bookBuilder = modelBuilder.Entity<Book>();
+            bookBuilder.HasMany(b => b.Chapters)
+              .WithOne(c => c.Book)
+              .HasForeignKey(c => c.BookId);
+            bookBuilder.Property(b => b.Title)
+              .HasMaxLength(120)
+              .IsRequired();
+            bookBuilder.Property(b => b.Publisher)
+                .HasMaxLength(40)
+                .IsRequired(false);
+            bookBuilder.Property(b => b.Isbn)
+              .HasMaxLength(20)
+              .IsRequired(false);
+            var chapterBuilder = modelBuilder.Entity<BookChapter>();
+            chapterBuilder.Property(c => c.Title)
+              .HasMaxLength(120);
+            chapterBuilder.HasOne(c => c.Book)
+                .WithMany(b => b.Chapters)
+                .HasForeignKey(c => c.BookId);
+        }
+    }
+
+}

API/BooksODataService/BooksODataService/Program.cs

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+using System;
+using System.Collections.Generic;
+using System.IO;
+using System.Linq;
+using System.Threading.Tasks;
+using Microsoft.AspNetCore;
+using Microsoft.AspNetCore.Hosting;
+using Microsoft.Extensions.Configuration;
+using Microsoft.Extensions.Logging;
+
+namespace BooksODataService
+{
+    public class Program
+    {
+        public static void Main(string[] args)
+        {
+            BuildWebHost(args).Run();
+        }
+
+        public static IWebHost BuildWebHost(string[] args) =>
+            WebHost.CreateDefaultBuilder(args)
+                .UseStartup<Startup>()
+                .Build();
+    }
+}