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# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
import re
import sqlalchemy
SQLA_VERSION = tuple(
int(num) if re.match(r'^\d+$', num) else num
for num in sqlalchemy.__version__.split(".")
)
sqla_100 = SQLA_VERSION >= (1, 0, 0)
sqla_097 = SQLA_VERSION >= (0, 9, 7)
sqla_094 = SQLA_VERSION >= (0, 9, 4)
sqla_090 = SQLA_VERSION >= (0, 9, 0)
sqla_08 = SQLA_VERSION >= (0, 8)
def get_postgresql_enums(conn):
"""Return a list of ENUM type names on a Postgresql backend.
For SQLAlchemy 0.9 and lower, makes use of the semi-private
_load_enums() method of the Postgresql dialect. In SQLAlchemy
1.0 this feature is supported using get_enums().
This function may only be called when the given connection
is against the Postgresql backend. It will fail for other
kinds of backends.
"""
if sqla_100:
return [e['name'] for e in sqlalchemy.inspect(conn).get_enums()]
else:
return conn.dialect._load_enums(conn).keys()
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