85 lines
2.6 KiB
Python
85 lines
2.6 KiB
Python
# Copyright 2012 Hewlett-Packard Development Company, L.P.
|
|
#
|
|
# Author: Patrick Galbraith <patg@hp.com>
|
|
#
|
|
# 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.
|
|
from sqlalchemy.exc import IntegrityError
|
|
from sqlalchemy.orm import object_mapper
|
|
from moniker import exceptions
|
|
|
|
|
|
class Base(object):
|
|
__abstract__ = True
|
|
__table_initialized__ = False
|
|
|
|
def save(self, session):
|
|
""" Save this object """
|
|
session.add(self)
|
|
|
|
try:
|
|
session.flush()
|
|
except IntegrityError, e:
|
|
non_unique_strings = (
|
|
'duplicate entry',
|
|
'not unique'
|
|
)
|
|
|
|
for non_unique_string in non_unique_strings:
|
|
if non_unique_string in str(e).lower():
|
|
raise exceptions.Duplicate(str(e))
|
|
|
|
# Not a Duplicate error.. Re-raise.
|
|
raise
|
|
|
|
def delete(self, session):
|
|
""" Delete this object """
|
|
session.delete(self)
|
|
session.flush()
|
|
|
|
def __setitem__(self, key, value):
|
|
setattr(self, key, value)
|
|
|
|
def __getitem__(self, key):
|
|
return getattr(self, key)
|
|
|
|
def __iter__(self):
|
|
columns = dict(object_mapper(self).columns).keys()
|
|
# NOTE(russellb): Allow models to specify other keys that can be looked
|
|
# up, beyond the actual db columns. An example would be the 'name'
|
|
# property for an Instance.
|
|
if hasattr(self, '_extra_keys'):
|
|
columns.extend(self._extra_keys())
|
|
self._i = iter(columns)
|
|
return self
|
|
|
|
def next(self):
|
|
n = self._i.next()
|
|
return n, getattr(self, n)
|
|
|
|
def update(self, values):
|
|
""" Make the model object behave like a dict """
|
|
for k, v in values.iteritems():
|
|
setattr(self, k, v)
|
|
|
|
def iteritems(self):
|
|
"""
|
|
Make the model object behave like a dict.
|
|
|
|
Includes attributes from joins.
|
|
"""
|
|
local = dict(self)
|
|
joined = dict([(k, v) for k, v in self.__dict__.iteritems()
|
|
if not k[0] == '_'])
|
|
local.update(joined)
|
|
return local.iteritems()
|