How to bind Interfaces to Methods using LightInject

Question

In Ninject when I wanted to bind NHibernate's ISession to a method I'd do :

container.Bind<ISession>().ToMethod(CreateSession).InRequestScope();

While the method is :

private ISession CreateSession(IContext context)
{
    var sessionFactory = context.Kernel.Get<ISessionFactory>();
    if (!CurrentSessionContext.HasBind(sessionFactory))
    {
        var session = sessionFactory.OpenSession();
        CurrentSessionContext.Bind(session);
    }
    return sessionFactory.GetCurrentSession();
}

How can I do the same with LightInject?

There's no Equivalent in LightInject. But there are still Typed Factories, which are nice. — user3550283, Mar 12 '15 at 08:18
Just started playing with LightInject (I was using Ninject) for performance and ease of use. Read: avoiding 500lb gorillas (Unity & Castle). I'll post what I ended up with later this evening and we can compare notes. — THBBFT, Mar 12 '15 at 12:11

uzul · Accepted Answer · 2015-04-01T22:40:11.877

The exact equivalent is the following:

container.Register<ISession>(factory => CreateSession(factory), new PerRequestLifeTime());

where CreateSession becomes:

private ISession CreateSession(IServiceFactory factory)
{
    var sessionFactory = factory.GetInstance<ISessionFactory>();
    if (!CurrentSessionContext.HasBind(sessionFactory))
    {
        var session = sessionFactory.OpenSession();
        CurrentSessionContext.Bind(session);
    }
    return sessionFactory.GetCurrentSession();
}

Edit: Actualy, this is not the "exact" equivalent, because NInject's InRequestScope is related to the web request while LightInject's PerRequestLifeTime means "PerGetInstanceCall". What you would need then is to get LightInject Web extension and intialize the container this way:

var container = new ServiceContainer();
container.EnablePerWebRequestScope();                   
container.Register<IFoo, Foo>(new PerScopeLifetime());

and use the PerScopeLifetime instead of PerRequestLifeTime

How to bind Interfaces to Methods using LightInject

1 Answers1