MVC - Implementing OData without EF/DB but Application Service as data source

Looking though the MSDN article introducing OData, it seems that while the scaffolding in Visual Studio is aimed at using OData with EF, you can still create controllers directly by deriving from EntitySetController:

public class PeopleController : EntitySetController<Person, int>
{
    public override IQueryable<Person> Get()
    {
        // return your own non-EF data source
    }
}

As long as you can get an IQueryable, you should be able to knock up an OData controller.

You can! The only problematic action you have to take care of is the get.

There are two ways:

1. Use ODataQueryOptions. It contains the parameters like skip, orderby, etc.

Sample

public class TestController : ODataController
{
    public IEnumerable<TestModel> Get(ODataQueryOptions<TestModel> options)
    {
        var entities = new List<TestModel>()
        {
            new TestModel { Id = 1 },
            new TestModel { Id = 2 },
            new TestModel { Id = 3 },
            new TestModel { Id = 4 },
            new TestModel { Id = 5 },
            new TestModel { Id = 6 }
        };

        //In this example, we use ApplyTo but you can build an adapter to your application service from the options parameter
        return (IEnumerable<TestModel>)options.ApplyTo(entities.AsQueryable());
    }
}

1. Implement your own IQueryable Provider that will query the application service. I didn't try this but I don't see any reason for it to not work.