IAsyncRepository or IObservableRepository for silverlight 4 + WCF Data Services

Question

Update 2 : @Enigmativity has a brilliant answer. I\'ve implemented this into a IObservableRepository. Details in my answer below.

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Answer 1

Too long to update the question, so I posted as an answer.

So I implemented it like this:

public interface IObservableRepository
{
    IObservable GetById(int id);
    IObservable> GetAll(Func> funcquery);
    IObservable SubmitInserts(IList inserts);
    IObservable SubmitDeletes(IList deletes);
    IObservable SubmitUpdates(IList updates);
    //helpers
    IObservable SubmitInsert(T entity);
    IObservable SubmitDelete(T entity);
    IObservable SubmitUpdate(T entity);
}

Some notes :

• TContext is needed for GetAll(), the implementation will have the Entity Framework DataServiceContext which will allow you to do the following:

  var foos = repo.GetAll(ts => ts.Where(t => t.Bar == "Hello"));
  //ts is a DataContext passed here by GetAll();
  

• The methods marked //helpers just call the other methods that take arrays.
• The actual return type for CRUD functions for WCF Data Services+Entity Framework is a DataServiceResponse. What I do is loop through them and return the Http Status Codes. So the ints returned for the CRUD methods are Http Status Codes.

• When loading child entities I just eager loaded them by doing this:

  context.Products.Expand("Child").Expand("Child2");
  

I can basically use it like this:

productRepo.GetById(3).Subscribe(x => /* Do something with product x*/ );
productRepo.SubmitUpdate(product)
         .Subscribe(r => /*return code should be 204 (http) 201 for insert */);
//same for insert and delete

Do tell me if I should put up the actual implementation here.

Any comments on this would be well taken =)

Thanks