RavenDB with Ninject in ASP.NET MVC3

11
votes

I want to use RavenDB with ninject in my asp.net mvc3 project, Any idea how I have to configure this? 

      kernel.Bind<Raven.Client.IDocumentSession>()
              .To<Raven.Client.Document.DocumentStore>()
              .InSingletonScope()
              .WithConstructorArgument("ConnectionString", ConfigurationManager.ConnectionStrings["RavenDB"].ConnectionString);
2
asp.net-mvc-3ravendbninject.web.mvc

2 Answers

25
votes

Here's how I do mine:

If you install Ninject with Nuget, you'll get an /App_start/ NinjectMVC3.cs file. In there:

    private static void RegisterServices(IKernel kernel)
    {            
        kernel.Load<RavenModule>();
    }

Here's the RavenModule class:

public class RavenModule : NinjectModule
{
    public override void Load()
    {
        Bind<IDocumentStore>()
            .ToMethod(InitDocStore)
            .InSingletonScope();

        Bind<IDocumentSession>()
            .ToMethod(c => c.Kernel.Get<IDocumentStore>().OpenSession())
            .InRequestScope();
    }

    private IDocumentStore InitDocStore(IContext context)
    {
        DocumentStore ds = new DocumentStore { ConnectionStringName = "Raven" };
        RavenProfiler.InitializeFor(ds);
        // also good to setup the glimpse plugin here            
        ds.Initialize();
        RavenIndexes.CreateIndexes(ds);
        return ds;
    }
}

And for completeness here's my index creation class:

public static class RavenIndexes
{
    public static void CreateIndexes(IDocumentStore docStore)
    {
        IndexCreation.CreateIndexes(typeof(RavenIndexes).Assembly, docStore);
    }

    public class SearchIndex : AbstractMultiMapIndexCreationTask<SearchIndex.Result>
    {
       // implementation omitted
    }
}

I hope this helps!

7
votes

I recommend using a custom Ninject Provider to set up your RavenDB DocumentStore. First place this in your code block that registers your Ninject services.

kernel.Bind<IDocumentStore>().ToProvider<RavenDocumentStoreProvider>().InSingletonScope();

Next, add this class that implements the Ninject Provider.

public class RavenDocumentStoreProvider : Provider<IDocumentStore>
{
  var store = new DocumentStore { ConnectionName = "RavenDB" };
  store.Conventions.IdentityPartsSeparator = "-"; // Nice for using IDs in routing
  store.Initialize();
  return store;
}

The IDocumentStore needs to be a singleton, but do not make the IDocumentSession a singleton. I recommend that you simply create a new IDocumentSession using OpenSession() on the IDocumentStore instance Ninject gives you whenever you need to interact with RavenDB. IDocumentSession objects are very lightweight, follow the unit-of-work pattern, are not thread-safe, and are meant to be used and quickly disposed where needed.

As others have done, you might also consider implementing a base MVC controller that overrides the OnActionExecuting and OnActionExecuted methods to open a session and save changes, respectively.