def aggregate_get(self, context, aggregate_id):
query = model_query(context, models.Aggregate).filter_by(
uuid=aggregate_id).options(joinedload("_metadata"))
try:
result = query.one()
except NoResultFound:
raise exception.AggregateNotFound(aggregate=aggregate_id)
return result
def _do_update_aggregate(self, context, aggregate_id, values):
with _session_for_write():
query = model_query(context, models.Aggregate)
query = add_identity_filter(query, aggregate_id)
try:
ref = query.with_lockmode('update').one()
except NoResultFound:
raise exception.AggregateNotFound(aggregate=aggregate_id)
ref.update(values)
return ref
def aggregate_destroy(self, context, aggregate_id):
with _session_for_write():
# First clean up all metadata related to this type
meta_query = model_query(
context,
models.AggregateMetadata).filter_by(aggregate_id=aggregate_id)
meta_query.delete()
query = model_query(context,
models.Aggregate).filter_by(id=aggregate_id)
count = query.delete()
if count != 1:
raise exception.AggregateNotFound(aggregate=aggregate_id)