LightDataInterface

This project is in BETA stage.

Benefits

• Common and light data access interface enables your client code to be independent of the specific DAL technology (e.g. NHibernate).
• Easier to switch from an existing DAL implementation (e.g. NHibernate) to another (e.g. Entity Framework).
• Eliminates boilerplate in DAL client code (e.g. starting a transaction, or opening a data session).
• Enables to have both DAL implementations (e.g. ADO.NET + NHibernate) transparent to the DAL client code.
• Ability to have more than one database/store and transparently bind repository implementation to use the appropiate database/store.

Features

Common interfaces

The DAL client code (e.g. application layer) uses minimalistic and straightforward interfaces to coordinate the data access layer. No dependencies on any particular framework (e.g. NHibernate, ADO.NET or EntityFramework).

• IDataSession
• IUnitOfWork
• IDataSessionFactory
• IUnitOfWorkFactory
• DataSession

When you decide to move to a different data access implementation or have two different DAL strategies - this gets easier.

Package: LightDataInterface

Providers for your favorite data access framework

• Adapter for EntityFramework
  • Package: LightDataInterface.EntityFramework
• Adapter for NHibernate (pending)
  • Package: LightDataInterface.NHibernate
• Adapter for MongoDb (roadmap/future)
• Adapter for ADO.NET (roadmap/future)

WebApi integration

[UnitOfWork] attribute wraps controller's action in a transaction (UnitOfWork). When the action executes successfully the transaction is commited automatically, otherwise when an exception occurs the transaction is rolled back automatically.

[HttpPost]
[Route("{markId}/Like")]
[UnitOfWork] // method wrapped in a transaction
public HttpResponseMessage Like(int markId, bool value)
{
    var mark = _markRepo.FindById(markId, MarkFetchStrategy.Like);
    if (mark == null)
    {
        return Request.CreateResponse(HttpStatusCode.NotFound);
    }

    mark.SetLiked(CurrentUser, value);
    return Request.CreateResponse(HttpStatusCode.OK);
}

Package: LightDataInterface.Extra.WebApi

Examples

Entity Framework and WebApi example

Domain model layer

ToDo

Services layer (WebApi)

ToDo

Data access layer (EntityFramework)

ToDo

Setup/configuration (Autofac)

ToDo

Packages

Name	Descripton	Dependencies
LightDataInterface	The interfaces to work with LightDataInterface	Common.Logging
LightDataInterface.Core	The core classes that help with setup and provide reusable runtime implementation for DAL providers	LightDataInterface
LightDataInterface.EntityFramework	Provider for Entity Framework	LightDataInterface.Core EntityFramework
LightDataInterface.Extra.WebApi	Adds integration goodies for WebApi	LightDataInterface.Core Microsoft.AspNet.WebApi.Core

License

Apache License 2.0