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14 changes: 14 additions & 0 deletions migra/changes.py
Original file line number Diff line number Diff line change
Expand Up @@ -500,6 +500,11 @@ def functions(d):
return statements


def _schemainspect_has_extension_enums():
enum = schemainspect.pg.obj.InspectedEnum('name', 'schema', ['elements'])
return hasattr(enum, 'is_extension')


class Changes(object):
def __init__(self, i_from, i_target, ignore_extension_versions=False):
self.i_from = i_from
Expand Down Expand Up @@ -639,6 +644,15 @@ def sequences(self):
modifications=False,
)

if _schemainspect_has_extension_enums():
@property
def enums(self):
return partial(
statements_for_changes,
od((k, v) for k,v in self.i_from.enums.items() if not v.is_extension),
od((k, v) for k,v in self.i_target.enums.items() if not v.is_extension),
)

def __getattr__(self, name):
if name in THINGS:
return partial(
Expand Down