[Deprecated] DMZ 1.5.3 (DataMapper OverZealous Edition)

[eluser]Jinkusu[/eluser]
Hail guys,

is their anyway to restrict a query to the records already loaded in an object?

Code:

$enrollments->where_related_student($student)->get();
$enrollments->where_related($courses)->get();

The problem is that instead of the second query being limited to the results of the first it queries the entire DB and only return the results of the second.