def delete_all(session, entities):
"""
Delete a list of entities.
:param session:
:type session: Session
:param entities:
:type entities: list
:returns: A list of deleted objects.
:rtype: list
"""
for ent in entities:
if hasattr(ent, "location"):
deleted = []
try:
session.delete(ent)
deleted.append(ent)
except RuntimeError as e:
# TODO logging
pass
todo.remove(local_native) # remove processed object
todo_ids = [id(obj) for obj in todo]
for field_name in local_model.child_fields:
if hasattr(local_native, field_name) and \
hasattr(remote_native, field_name):
# set difference between the actual remote and local children
# references determines the list of children to delete
local_children = getattr(local_native, field_name, [])
remote_children = getattr(remote_native, field_name, [])
to_clean += compare_objs(local_children, remote_children)
# skip empty lazy-loaded proxy relations
if not (hasattr(local_children, '_is_loaded') and
not getattr(local_children, '_is_loaded')) and \
(local_children is not None):
for obj in local_children:
loc = getattr(obj, 'location', None)
if not (loc is not None and loc in processed) and \
not id(obj) in todo_ids:
todo.append(obj)
# cleaning removed objects
for entity in to_clean:
try:
session.delete(entity)
except Exception, e:
exceptions.append(e)
return exceptions