| adds an ascending ordering criteria to this node of
the query graph.
If multiple ordering criteria are applied, the chronological
order of method calls is relevant: criteria created by 'earlier' calls are
considered more significant, i.e. 'later' criteria only have an effect
for elements that are considered equal by all 'earlier' criteria.
As an example, consider a type with two int fields, and an instance set
{(a:1,b:3),(a:2,b:2),(a:1,b:2),(a:2,b:3)}. The call sequence [orderAscending(a),
orderDescending(b)] will result in [(a:1,b:3),(a:1,b:2),(a:2,b:3),(a:2,b:2)].
this Query object to allow the chaining of method calls. |