Structural class representing a column ordering for a query.

Queries often order results on multiple columns. For example, projects might be ordered by "name, id". This class wraps a list of column orderings and makes them easier to manage.

To construct an order vector, use newFromVector():

$vector = PhabricatorQueryOrderVector::newFromVector(array('name', 'id'));

You can iterate over an order vector normally:

foreach ($vector as $item) {
  // ...
}

The items are objects of class PhabricatorQueryOrderItem.

This class is primarily internal to the query infrastructure, and most application code should not need to interact with it directly.