/// <summary>
/// Sorts IQueryable source according to provided sort criteria and sort functor
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="source">Source IQueryable</param>
/// <param name="sortCriteria">SortCriteria to be used for sorting</param>
/// <param name="sortFunctor">Sort functor to be used for sorting</param>
/// <returns><see cref="IOrderedQueryable<typeparamref name="T"/>"/></returns>
public static IOrderedQueryable <T> DoSorting <T>(this IQueryable <T> source, IEnumerable <SortCriteria> sortCriteria, Func <string, Expression <Func <T, object> > > sortFunctor)
{
if (source == null)
{
throw new ArgumentNullException("source");
}
// Convert to IOrderedQueryable, will leave current order
var ordered = source.OrderBy(x => 0);
if (!ordered.Any() || sortCriteria == null || !sortCriteria.Any())
{
return(ordered);
}
foreach (var sortRule in sortCriteria.OrderBy(x => x.Priority))
{
ordered = SortingHelper.ApplySortRule(ordered, sortRule, sortFunctor);
}
return(ordered);
}