Paging Helpers in Unifico, Filtered and Sorted Paging

Unifico has a few paging helpers to make service methods easily paged from a client. Essentially the framework makes consuming a page request object as simple as calling .ToList() on an IQueryable source. The object, the PageRequest, has two collections, Filters and Sorts with several constructors to make instantiation easy. The collections are rather straight forward, providing filtering and sorting ability on a paging source. The uniqueness comes from the ability to request multiple filters and sorts together, along with a paging request. This request is then execute on the IQueryable source, so if DLINQ is used, results in exactly two database hits. A COUNT statement is executed to find out how many pages there are, and a single select statement providing the paged results. This is all done without exposing LINQ or IQueryable to the service's client.