static void Main(string[] args)
{
var authors = new List <Author>();
authors.Add(new Author {
FullName = "Иван Иванов"
});
authors.Add(new Author {
FullName = "Петр Петров"
});
authors.Add(new Author {
FullName = "Сергей Сергеев"
});
var books = new List <Book>();
books.Add(new Book {
Name = "Сказки на ночь", Authors = new List <Author> {
authors[0], authors[1]
}
});
books.Add(new Book {
Name = "Зеленая шапочка", Authors = new List <Author> {
authors[1], authors[2]
}
});
books.Add(new Book {
Name = "Песик Гав-Гав", Authors = new List <Author> {
authors[2], authors[0]
}
});
var students = new List <Student>();
students.Add(new Student {
FullName = "Бека", Books = new List <Book> {
books[0], books[1]
}
});
students.Add(new Student {
FullName = "Сека", Books = new List <Book> {
books[2]
}
});
students.Add(new Student {
FullName = "Эрик", Books = new List <Book>()
});
//using (var context = new AppContext())
//{
// context.Authors.AddRange(authors);
// context.Books.AddRange(books);
// context.Students.AddRange(students);
// context.SaveChanges();
//}
using (var context = new AppContext())
{
//1
foreach (var student in context.Database.SqlQuery <Student>
("Select distinct s.id, s.fullname from Students s, StudentBooks sb where s.id = sb.student_id and sb.book_id is not null"))
{
Console.WriteLine(student.FullName);
}
//2
foreach (var author in context.Database.SqlQuery <Author>
($"Select a.id, a.fullname from Books b, BookAuthors ba, Authors a where b.id=ba.book_id and ba.author_id=a.id and b.id = '{context.Books.ToList()[2].Id}'"))
{
Console.WriteLine(author.FullName);
}
//3
foreach (var book in context.Database.SqlQuery <Book>
("Select b.id, b.name from Books b, StudentBooks sb where b.id=sb.book_id and not exists"))
{
Console.WriteLine(book.Name);
}
}
Console.Read();
}
public static void Compile()
{
var testTree = CSharpSyntaxTree.ParseText(@"
using System;
using ExternalLibrary;
namespace test{
public class Power
{
public void power(int number)
{
new ExternalClass().Print(number * number);
}
}
}");
var options = new CSharpCompilationOptions(OutputKind.DynamicallyLinkedLibrary, allowUnsafe: true);
options = options.WithAssemblyIdentityComparer(AssemblyIdentityComparer.Default);
var references = new List <MetadataReference>
{
MetadataReference.CreateFromFile(typeof(object).Assembly.Location),
MetadataReference.CreateFromFile(Assembly.Load("netstandard, Version=2.0.0.0, Culture=neutral, PublicKeyToken=cc7b13ffcd2ddd51").Location),
MetadataReference.CreateFromFile(Path.Combine(Path.GetDirectoryName(Assembly.GetExecutingAssembly().Location), "ExternalLibrary.dll"))
};
if (AppContext.GetData("TRUSTED_PLATFORM_ASSEMBLIES") is string trustedAssemblies)
{
Console.WriteLine(trustedAssemblies);
references.AddRange(
trustedAssemblies.Split(Path.PathSeparator).Select(path =>
MetadataReference.CreateFromFile(path))
);
}
var compilation = CSharpCompilation.Create("DummyAssembly", options: options, references: references)
.AddSyntaxTrees(testTree);
using (var stream = new MemoryStream())
{
var compilationResult = compilation.Emit(stream);
if (!compilationResult.Success)
{
Console.WriteLine(string.Join("\n", compilationResult.Diagnostics.Select(d => d.GetMessage())));
}
else
{
stream.Seek(0, SeekOrigin.Begin);
var assembly = Assembly.Load(stream.ToArray());
var type = assembly.GetType("test.Power");
var power = Activator.CreateInstance(type);
type.InvokeMember("power", BindingFlags.Default | BindingFlags.InvokeMethod, null, power, new object[] { 2 });
}
}
}
