/// <summary>
/// Wrap <see cref="IQueryable{T}"/> to decorator that intercepts
/// IQueryable.Expression with provided <see cref="ExpressionVisitor"/>.
/// </summary>
public static IQueryable <T> AsVisitable <T>(
this IQueryable <T> queryable, params ExpressionVisitor[] visitors)
{
if (queryable == null)
{
throw new ArgumentNullException(nameof(queryable));
}
if (visitors == null)
{
throw new ArgumentNullException(nameof(visitors));
}
return(queryable as VisitableQuery <T>
?? VisitableQueryFactory <T> .Create(queryable, visitors));
}
// Декоратор для IQueryable<T>, который вызовет наш ExpressionVisitor.
internal static IQueryable <T> AsVisitable <T>(this IQueryable <T> queryable, params ExpressionVisitor[] visitors)
{
return(queryable as VisitableQuery <T> ?? VisitableQueryFactory <T> .Create(queryable, visitors));
}
