/django/contrib/gis/db/models/aggregates.py

 1from django.db.models import Aggregate
 2from django.contrib.gis.db.models.sql import GeomField
 3
 4class Collect(Aggregate):
 5    name = 'Collect'
 6
 7class Extent(Aggregate):
 8    name = 'Extent'
 9
10class Extent3D(Aggregate):
11    name = 'Extent3D'
12
13class MakeLine(Aggregate):
14    name = 'MakeLine'
15
16class Union(Aggregate):
17    name = 'Union'