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9 changed files with 1 additions and 205 deletions

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@ -1,13 +0,0 @@
<Project Sdk="Microsoft.NET.Sdk.Web">
<PropertyGroup>
<TargetFramework>net9.0</TargetFramework>
<Nullable>enable</Nullable>
<ImplicitUsings>enable</ImplicitUsings>
</PropertyGroup>
<ItemGroup>
<PackageReference Include="Microsoft.AspNetCore.OpenApi" Version="9.0.3" />
</ItemGroup>
</Project>

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@ -1,6 +0,0 @@
@EntityFrameworkCore.API_HostAddress = http://localhost:5072
GET {{EntityFrameworkCore.API_HostAddress}}/weatherforecast/
Accept: application/json
###

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@ -1,41 +0,0 @@
var builder = WebApplication.CreateBuilder(args);
// Add services to the container.
// Learn more about configuring OpenAPI at https://aka.ms/aspnet/openapi
builder.Services.AddOpenApi();
var app = builder.Build();
// Configure the HTTP request pipeline.
if (app.Environment.IsDevelopment())
{
app.MapOpenApi();
}
app.UseHttpsRedirection();
var summaries = new[]
{
"Freezing", "Bracing", "Chilly", "Cool", "Mild", "Warm", "Balmy", "Hot", "Sweltering", "Scorching"
};
app.MapGet("/weatherforecast", () =>
{
var forecast = Enumerable.Range(1, 5).Select(index =>
new WeatherForecast
(
DateOnly.FromDateTime(DateTime.Now.AddDays(index)),
Random.Shared.Next(-20, 55),
summaries[Random.Shared.Next(summaries.Length)]
))
.ToArray();
return forecast;
})
.WithName("GetWeatherForecast");
app.Run();
record WeatherForecast(DateOnly Date, int TemperatureC, string? Summary)
{
public int TemperatureF => 32 + (int)(TemperatureC / 0.5556);
}

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@ -1,23 +0,0 @@
{
"$schema": "https://json.schemastore.org/launchsettings.json",
"profiles": {
"http": {
"commandName": "Project",
"dotnetRunMessages": true,
"launchBrowser": false,
"applicationUrl": "http://localhost:5072",
"environmentVariables": {
"ASPNETCORE_ENVIRONMENT": "Development"
}
},
"https": {
"commandName": "Project",
"dotnetRunMessages": true,
"launchBrowser": false,
"applicationUrl": "https://localhost:7223;http://localhost:5072",
"environmentVariables": {
"ASPNETCORE_ENVIRONMENT": "Development"
}
}
}
}

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@ -1,8 +0,0 @@
{
"Logging": {
"LogLevel": {
"Default": "Information",
"Microsoft.AspNetCore": "Warning"
}
}
}

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@ -1,9 +0,0 @@
{
"Logging": {
"LogLevel": {
"Default": "Information",
"Microsoft.AspNetCore": "Warning"
}
},
"AllowedHosts": "*"
}

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@ -1,6 +1,5 @@
using EntityFrameworkCore.Data; using EntityFrameworkCore.Data;
using EntityFrameworkCore.Domain; using EntityFrameworkCore.Domain;
using Microsoft.Data.Sqlite;
using Microsoft.EntityFrameworkCore; using Microsoft.EntityFrameworkCore;
using var context = new DeadBallZoneLeagueDbContext(); using var context = new DeadBallZoneLeagueDbContext();
@ -16,93 +15,7 @@ context.Database.EnsureCreated();
// Rather than raise: "System.InvalidOperationException: Sequence contains no elements." // Rather than raise: "System.InvalidOperationException: Sequence contains no elements."
// var firstCoach = await context.Coaches.FirstOrDefaultAsync(); // var firstCoach = await context.Coaches.FirstOrDefaultAsync();
var details = await context.TeamsAndLeaguesView.ToListAsync();
async Task UserDefinedQuery()
{
var earliestMatch = context.GetEarliestTeamMatch(1);
// This is done, if you have a user-defined function in the database.
// for example:
// CREATE FUNCTION [dbo].[GetEarliestMatch] (@teamId int)
// RETURNS datetime
// BEGIN
// DECLARE @result datetime
// SELECT TOP 1 @result = date
// FROM MATCHES [dbo].[Matches]
// ORDER BY Date
// return @result
// END
}
async Task QueryScalarType()
{
// Query a scalar or non-entity type.
// Scalar subqueries or scalar queries are queries that return exactly one column and one or zero records.
// Source: https://stackoverflow.com/questions/20424966/what-is-a-scalar-query
var leagueIds = context.Database.SqlQuery<int>(
$"SELECT Id FROM Leagues"
).ToList();
}
async Task RawSQLStatement()
{
// Beware that SQL Injection can be used on input here.
Console.WriteLine("Enter Team name: ");
var teamName = Console.ReadLine();
// If you omit this param creation, SQL injection is possible.
var teamNameParam = new SqliteParameter("teamName", teamName);
var teams = context.Teams.FromSqlRaw(
$"SELECT * FROM Teams WHERE name = @teamName", teamNameParam
);
foreach (var t in teams)
{
Console.WriteLine($"SQL Raw Team: {t.Name}");
}
// Parameterization happens automatically for these two:
teams = context.Teams.FromSql($"SELECT * FROM Teams WHERE name = {teamName}");
foreach (var t in teams)
{
Console.WriteLine($"SQL Raw Team: {t.Name}");
}
// Note, that you cannot use JOINs in these SQL queries.
// Instead, the Include() function is used to add related data.
// FromSqlInterpolated is the revised form of FromSql, and a better choice.
teams = context.Teams.FromSqlInterpolated($"SELECT * FROM Teams WHERE name = {teamName}");
foreach (var t in teams)
{
Console.WriteLine($"SQL Raw Team: {t.Name}");
}
// You can also mix with LINQ.
var teamsList = context.Teams.FromSql($"SELECT * FROM Teams")
.Where(t => t.Id == 1)
.OrderBy(t => t.Id)
.Include("League")
.ToList();
foreach (var t in teamsList)
{
Console.WriteLine($"SQL Raw Team: {t.Name}");
}
// Stored procedures example. Note that SQLite does not support stored proceduces.
var leagueId = 1;
var league = context.Leagues.FromSqlInterpolated(
$"EXEC dbo.StoredProcedureToGetLeagueName {leagueId}"
);
// Non-querying statement examples.
var newTeamName = "Neo Oslo";
var success = context.Database.ExecuteSqlInterpolated(
$"UPDATE Teams SET Name = {newTeamName}"
);
var teamToDelete = 1;
var teamDeletedSuccess = context.Database.ExecuteSqlInterpolated(
$"EXEC dbo.DeleteTeam {teamToDelete}"
);
}
async Task ProjectionAndAnonymousDataTypes() async Task ProjectionAndAnonymousDataTypes()
{ {

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@ -41,16 +41,5 @@ public class DeadBallZoneLeagueDbContext : DbContext
// This database object does not have a Primary Key, so we state that here, otherwise an exception is thrown. // This database object does not have a Primary Key, so we state that here, otherwise an exception is thrown.
modelBuilder.Entity<TeamsAndLeaguesView>().HasNoKey().ToView("vw_TeamsAndLeagues"); modelBuilder.Entity<TeamsAndLeaguesView>().HasNoKey().ToView("vw_TeamsAndLeagues");
// This is for user-defined functions.
modelBuilder.HasDbFunction(
typeof(DeadBallZoneLeagueDbContext)
.GetMethod(
nameof(GetEarliestTeamMatch),
new[] {typeof(int)}
))
.HasName("GetEarliestMatch");
} }
public DateTime GetEarliestTeamMatch(int teamId) => throw new NotImplementedException();
} }

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@ -9,8 +9,6 @@ Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "EntityFrameworkCore.Domain"
EndProject EndProject
Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "EntityFrameworkCore.Console", "EntityFrameworkCore.Console\EntityFrameworkCore.Console.csproj", "{58F305A5-1C40-445D-8B2D-2CA4A0224274}" Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "EntityFrameworkCore.Console", "EntityFrameworkCore.Console\EntityFrameworkCore.Console.csproj", "{58F305A5-1C40-445D-8B2D-2CA4A0224274}"
EndProject EndProject
Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "EntityFrameworkCore.API", "EntityFrameworkCore.API\EntityFrameworkCore.API.csproj", "{07BDB953-9BB3-431B-9F50-0AC270946B8D}"
EndProject
Global Global
GlobalSection(SolutionConfigurationPlatforms) = preSolution GlobalSection(SolutionConfigurationPlatforms) = preSolution
Debug|Any CPU = Debug|Any CPU Debug|Any CPU = Debug|Any CPU
@ -32,9 +30,5 @@ Global
{58F305A5-1C40-445D-8B2D-2CA4A0224274}.Debug|Any CPU.Build.0 = Debug|Any CPU {58F305A5-1C40-445D-8B2D-2CA4A0224274}.Debug|Any CPU.Build.0 = Debug|Any CPU
{58F305A5-1C40-445D-8B2D-2CA4A0224274}.Release|Any CPU.ActiveCfg = Release|Any CPU {58F305A5-1C40-445D-8B2D-2CA4A0224274}.Release|Any CPU.ActiveCfg = Release|Any CPU
{58F305A5-1C40-445D-8B2D-2CA4A0224274}.Release|Any CPU.Build.0 = Release|Any CPU {58F305A5-1C40-445D-8B2D-2CA4A0224274}.Release|Any CPU.Build.0 = Release|Any CPU
{07BDB953-9BB3-431B-9F50-0AC270946B8D}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
{07BDB953-9BB3-431B-9F50-0AC270946B8D}.Debug|Any CPU.Build.0 = Debug|Any CPU
{07BDB953-9BB3-431B-9F50-0AC270946B8D}.Release|Any CPU.ActiveCfg = Release|Any CPU
{07BDB953-9BB3-431B-9F50-0AC270946B8D}.Release|Any CPU.Build.0 = Release|Any CPU
EndGlobalSection EndGlobalSection
EndGlobal EndGlobal