public override void VisitOrderByClause(OrderByClause orderByClause, QueryModel queryModel, int index)
{
if (_groupingStatus == GroupingStatus.InGroupSubquery)
{
// Just ignore sorting before grouping takes place
return;
}
if (_queryPartsAggregator.QueryType != N1QlQueryType.Array)
{
var orderByParts =
orderByClause.Orderings.Select(
ordering =>
string.Concat(GetN1QlExpression(ordering.Expression), " ",
ordering.OrderingDirection.ToString().ToUpper())).ToList();
_queryPartsAggregator.AddOrderByPart(orderByParts);
base.VisitOrderByClause(orderByClause, queryModel, index);
}
else
{
// This is an array subquery
if (!VerifyArraySubqueryOrderByClause(orderByClause, queryModel, index))
{
throw new NotSupportedException("N1Ql Array Subqueries Support One Ordering By The Array Elements Only");
}
_queryPartsAggregator.AddWrappingFunction("ARRAY_SORT");
if (orderByClause.Orderings[0].OrderingDirection == OrderingDirection.Desc)
{
// There is no function to sort an array descending
// so we just reverse the array after it's sorted ascending
_queryPartsAggregator.AddWrappingFunction("ARRAY_REVERSE");
}
}
}
