DevMentor.Context.FileContext

FileContext is a data access layer (DAL) Framework for Rapid Data Driven Application Development (RDDAD).

###benefits

1. you don't need a database
2. rapid data-modelling, -modification
3. share your informations with version-control
4. quick synchronisation between environments (test -> dev)
5. all serializable .NET types are allowed (DateTime.Min, TimeSpan > 24h,...)
6. all linq queries with extension-methods as FilterExpression are allowed
7. rapid migration to Entity-Framework 6.*
8. Generic repository pattern included
9. Unit of work pattern included
10. Threadsafe for prototyping
11. Different store strategies (Xml,Json,InMemory,MongoDb,Cache)
12. Caching as store wrapper
13. Support transactions
14. Support disconnected entities

hint: don't use for production.

###nuget

PM> install-package filecontext

PM> install-package filecontext.mongodb

###Todo: in two steps to FileContext modify EntityFramework DbContext to FileContext

1. Replace DbContext to FileContext
2. Replace DbSet to FileSet

###Example Code:

var unit = new UnitOfWork(new Context()); //new Context(new InMemoryStoreStrategy())
//INSERT
Console.WriteLine("INSERT PAUL");
unit.UserRepository.Insert(new User() { UserName="pmizel",
                                        FirstName="Paul", 
                                        LastName="Mizel",
                                        Birthday=new DateTime(1980,4,1)});
Console.WriteLine("INSERT FABIAN");
unit.UserRepository.Insert(new User() { UserName = "fraetz", 
                                        FirstName = "Fabian",
                                        LastName = "Raetz",
                                        Birthday = new DateTime(1989, 4, 1)});
unit.Save();

Console.WriteLine("GET ALL");
var users=unit.UserRepository.Get(); //GET ALL
foreach (var user in users)
{
    Console.WriteLine("{0} {1} ({2})", user.FirstName, user.LastName, user.UserName);
}

Console.WriteLine("GET Youngest");
var youngest = unit.UserRepository.Get(orderBy: o => o.OrderByDescending(i => i.Birthday)).First(); 
Console.WriteLine("{0} {1} ({2}) - {3:dd.MM.yyyy}", youngest.FirstName, 
                                                    youngest.LastName, 
                                                    youngest.UserName,
                                                    youngest.Birthday);

Console.WriteLine("GET PAULs");
users = unit.UserRepository.Get(f=>f.FirstName=="Paul"); //GET ALL
foreach (var user in users)
{
    Console.WriteLine("{0} {1} ({2})", user.FirstName, user.LastName, user.UserName);
}
Console.WriteLine("UPDATE PAULs to PABLOs");
foreach (var user in users)
{
    user.FirstName = "Pablo";
    unit.UserRepository.Update(user);
}
unit.Save();

Console.WriteLine("GET ALL");
users = unit.UserRepository.Get(); //GET ALL
foreach (var user in users)
{
    Console.WriteLine("{0} {1} ({2})", user.FirstName, user.LastName, user.UserName);
}

//DELETE ALL
Console.WriteLine("DELETE ALL");
unit.UserRepository.Delete(unit.UserRepository.Get());
users = unit.UserRepository.Get();
foreach (var user in users)
{
    Console.WriteLine("{0} {1} ({2})", user.FirstName, user.LastName, user.UserName);
}
unit.Save();

###Output:

INSERT PAUL
INSERT FABIAN
GET ALL
Paul Mizel (pmizel)
Fabian Raetz (fraetz)
GET Youngest
Fabian Raetz (fraetz) - 01.04.1989
GET PAULs
Paul Mizel (pmizel)
UPDATE PAULs to PABLOs
GET ALL
Fabian Raetz (fraetz)
Pablo Mizel (pmizel)
DELETE ALL

###Example Context:

//public class ContentItemContext : DbContext
public class ContentItemContext : FileContext
{
	public ContentItemContext()
		: base("name=ContentItemContext")
	{
	}

	public FileSet<ContentItem> ContentItems { get; set; }
	//public DbSet<ContentItem> ContentItems { get; set; }
}

###StoreStrategy

//public class ContentItemContext : DbContext
public class ContentItemContext : FileContext
{
	public ContentItemContext()
		: base(new JsonStoreStrategy()) 
		// or DefaultStoreStrategy() => XmlStoreStrategy()
		// or InMemoryStoreStrategy()
	{
	}

	public FileSet<ContentItem> ContentItems { get; set; }
	//public DbSet<ContentItem> ContentItems { get; set; }
}

for UnitTests/IntegrationsTests use InMemoryStoreStrategy instance.