From d59c408198fc1bb6e57177535d63e544d3a3f416 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Milan=20Jovanovi=C4=87?= <milannis.995@gmail.com>
Date: Sat, 1 Oct 2022 20:33:34 +0200
Subject: [PATCH 1/2] 233x improvement

---
 BenchmarkService.cs     | 29 ++++++++++++++++++++++++++++-
 OptimizeMePlease.csproj | 10 +++++-----
 2 files changed, 33 insertions(+), 6 deletions(-)

diff --git a/BenchmarkService.cs b/BenchmarkService.cs
index d0a958d..8ad3331 100644
--- a/BenchmarkService.cs
+++ b/BenchmarkService.cs
@@ -88,7 +88,34 @@ public List<AuthorDTO> GetAuthors()
         [Benchmark]
         public List<AuthorDTO> GetAuthors_Optimized()
         {
-            List<AuthorDTO> authors = new List<AuthorDTO>();
+            using var dbContext = new AppDbContext();
+
+            var authors = dbContext
+                .Authors
+                .Include(x => x.Books.Where(b => b.Published.Year < 1900))
+                .Where(x =>
+                    x.Country == "Serbia" &&
+                    x.Age == 27)
+                .OrderByDescending(x => x.BooksCount)
+                .Select(x => new AuthorDTO
+                {
+                    UserFirstName = x.User.FirstName,
+                    UserLastName = x.User.LastName,
+                    UserEmail = x.User.Email,
+                    UserName = x.User.UserName,
+                    AllBooks = x.Books
+                        .Select(y => new BookDto
+                        {
+                            Id = y.Id,
+                            Name = y.Name,
+                            Published = y.Published
+                        }).ToList(),
+                    AuthorAge = x.Age,
+                    AuthorCountry = x.Country,
+                    Id = x.Id
+                })
+                .Take(2)
+                .ToList();
 
             return authors;
         }
diff --git a/OptimizeMePlease.csproj b/OptimizeMePlease.csproj
index 7e4fcc9..c898ab0 100644
--- a/OptimizeMePlease.csproj
+++ b/OptimizeMePlease.csproj
@@ -2,16 +2,16 @@
 
   <PropertyGroup>
     <OutputType>Exe</OutputType>
-    <TargetFramework>netcoreapp3.1</TargetFramework>
+    <TargetFramework>net6.0</TargetFramework>
   </PropertyGroup>
 
   <ItemGroup>
     <PackageReference Include="BenchmarkDotNet" Version="0.13.2" />
     <PackageReference Include="Bogus" Version="34.0.2" />
-    <PackageReference Include="Microsoft.EntityFrameworkCore" Version="3.1.29" />
-    <PackageReference Include="Microsoft.EntityFrameworkCore.Relational" Version="3.1.29" />
-    <PackageReference Include="Microsoft.EntityFrameworkCore.SqlServer" Version="3.1.29" />
-    <PackageReference Include="Microsoft.EntityFrameworkCore.Tools" Version="3.1.29">
+    <PackageReference Include="Microsoft.EntityFrameworkCore" Version="6.0.9" />
+    <PackageReference Include="Microsoft.EntityFrameworkCore.Relational" Version="6.0.9" />
+    <PackageReference Include="Microsoft.EntityFrameworkCore.SqlServer" Version="6.0.9" />
+    <PackageReference Include="Microsoft.EntityFrameworkCore.Tools" Version="6.0.9">
       <PrivateAssets>all</PrivateAssets>
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
     </PackageReference>

From b446dea700dae4abf169f4ee7a6ac4dac38668b6 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Milan=20Jovanovi=C4=87?= <milannis.995@gmail.com>
Date: Tue, 4 Oct 2022 08:26:31 +0200
Subject: [PATCH 2/2] Filtering books in-memory

---
 BenchmarkService.cs | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/BenchmarkService.cs b/BenchmarkService.cs
index 8ad3331..8eb230d 100644
--- a/BenchmarkService.cs
+++ b/BenchmarkService.cs
@@ -92,7 +92,6 @@ public List<AuthorDTO> GetAuthors_Optimized()
 
             var authors = dbContext
                 .Authors
-                .Include(x => x.Books.Where(b => b.Published.Year < 1900))
                 .Where(x =>
                     x.Country == "Serbia" &&
                     x.Age == 27)
@@ -117,6 +116,11 @@ public List<AuthorDTO> GetAuthors_Optimized()
                 .Take(2)
                 .ToList();
 
+            foreach (var author in authors)
+            {
+                author.AllBooks = author.AllBooks.Where(b => b.Published.Year < 1900).ToList();
+            }
+
             return authors;
         }
     }