iqueryable

I am creating a repository that exposes IQueryable. What is the best way to mock this out for my unit testing? Since I am using RhinoMocks for the rest of my mock objects, I tried to do the following: IQueryable<MyObject> QueryObject = MockRepository.GenerateStub<IQueryable<MyObject>>(); This doesn't work though so I tried doing this: IQueryable<MyObject> QueryObject = (new List<MyObject> { new MyObject() }).AsQueryable(); Is there a better way to do this, or have any other mocking frameworks built support for IQueryable in? My repository interface looks like this: public interface IRepository

After reading this question, I need to clear up some things. IQueryable<Customer> custs = from c in db.Customers where c.City == "<City>" select c; IEnumerable<Customer> custs = from c in db.Customers where c.City == "<City>" select c; Questions: 1) Is it ok to say that: in the first query the SQLServer is running the whole operation including where clause and returning ONLY the relevant rows - while the second one does SELECT * ... and returns all rows into C# and THEN filters ? 2) What about if I have a collection merely - in memory. ( var lstMyPerson = new List<MyPerson>() ) IQueryable

So, I've read all the Q&A's here on SO regarding the subject of whether or not to expose IQueryable to the rest of your project or not (see here , and here ), and I've ultimately decided that I don't want to expose IQueryable to anything but my Model. Because IQueryable is tied to certain persistence implementations I don't like the idea of locking myself into this. Similarly, I'm not sure how good I feel about classes further down the call chain modifying the actual query that aren't in the repository. So, does anyone have any suggestions for how to write a clean and concise Repository

I'm trying to filter a LINQ-to-entities query in a generic way, but I keep getting an error. Here is a piece of code: private IQueryable<T> FilterDeletedEntities<T>(IQueryable<T> entities) { if (typeof(IDeletable).IsAssignableFrom(typeof(T))) { var deletableEntities = (IQueryable<IDeletable>)entities; deletableEntities = deletableEntities.Where(entity => !entity.Deleted); entities = (IQueryable<T>)deletableEntities; } return entities; } Basically I'm trying to filter out deleted entities (i.e. 'Deleted' field is 'true'), if and only if the entity is IDeletable (i.e. it has the 'Deleted' field)

I've an extension method, which returns an IQueryable, to get company products, I just want to use it in a IQueryable as a subquery, public static class DBEntitiesCompanyExtensions { public static IQueryable<Product> GetCompanyProducts(this DBEntities db, int companyId) { return db.Products.Where(m => m.CompanyId == companyId); } } And this is how I call it, using(var db = new DBEntities()) { var query = db.Companies.Select(m => new { CompanyName = m.Name, NumberOfProducts = db.GetCompanyProducts(m.CompanyId).Count() }); } I expected it to works beacuse my extension methods returns an

I'd like to expose a Repository as an 'IQueryable' type. The repository uses Linq to NHibernate to communicate with the database. Can anyone point me at an example implementation? For example, what would the corresponding 'GetEnumerator()' implementation on my repository look like? Edit: Would something like this be appropriate? public class MyTypeRepository : IEnumerable<MyType> { IEnumerator<MyType> IEnumerable<MyType>.GetEnumerator() { return Session.Linq<MyType>().GetEnumerator(); } IEnumerator IEnumerable.GetEnumerator() { return ((IEnumerable<MyType>)this).GetEnumerator(); } } This is a

I have a search repository for EntityFramework 4.0 using LinqKit with the following search function: public IQueryable<T> Search<T>(Expression<Func<T, bool>> predicate) where T : EntityObject { return _unitOfWork.ObjectSet<T>().AsExpandable().Where(predicate); } And another class which uses the IQueryable return value to subset the query in ways that are not possible using the Boolean LinqKit PredicateBuilder expressions: public IQueryable<T> SubsetByUser<T>(IQueryable<T> set, User user) where T : EntityObject { return set.Join(_searcher.Search<Metadatum>((o) => o.UserGUID == user.GUID), arc =