public OrderingTerm(Expr term
, Identifier collation
, OrderSpec orderSpec
, NullOrder nullOrder)
{
this.Comments = new Comments();
this.Term = term;
this.Collation = collation;
this.OrderSpec = orderSpec;
this.NullOrder = nullOrder;
}
internal OrderingTerm(Expr term
, Identifier collation
, OrderSpec orderSpec
, NullOrder nullOrder
, Comments comments)
{
this.Comments = comments;
this.Term = term;
_collation = collation;
_orderSpec = orderSpec;
_nullOrder = nullOrder;
}
public static IEnumerable <T> OrderBy <T, TKey>(this IEnumerable <T> list, Func <T, TKey?> keySelector, NullOrder nullOrder)
where TKey : struct
{
switch (nullOrder)
{
case NullOrder.NullsLast:
return(list.OrderBy(keySelector, NullableComparer <TKey> .Larger));
case NullOrder.NullsFirst:
return(list.OrderBy(keySelector, NullableComparer <TKey> .Smaller));
default:
throw new ArgumentOutOfRangeException(nameof(nullOrder), nullOrder, null);
}
}
