73 lines
2.3 KiB
Python
73 lines
2.3 KiB
Python
# Copyright (c) 2012 OpenStack Foundation.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
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# implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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from sqlalchemy.ext import declarative
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from sqlalchemy import orm
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class QuantumBase(object):
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"""Base class for Quantum Models."""
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__table_args__ = {'mysql_engine': 'InnoDB'}
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def __setitem__(self, key, value):
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setattr(self, key, value)
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def __getitem__(self, key):
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return getattr(self, key)
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def get(self, key, default=None):
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return getattr(self, key, default)
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def __iter__(self):
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self._i = iter(orm.object_mapper(self).columns)
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return self
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def next(self):
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n = self._i.next().name
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return n, getattr(self, n)
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def update(self, values):
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"""Make the model object behave like a dict"""
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for k, v in values.iteritems():
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setattr(self, k, v)
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def iteritems(self):
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"""Make the model object behave like a dict.
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Includes attributes from joins."""
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local = dict(self)
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joined = dict([(k, v) for k, v in self.__dict__.iteritems()
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if not k[0] == '_'])
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local.update(joined)
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return local.iteritems()
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def __repr__(self):
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"""sqlalchemy based automatic __repr__ method"""
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items = ['%s=%r' % (col.name, getattr(self, col.name))
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for col in self.__table__.columns]
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return "<%s.%s[object at %x] {%s}>" % (self.__class__.__module__,
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self.__class__.__name__,
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id(self), ', '.join(items))
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class QuantumBaseV2(QuantumBase):
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@declarative.declared_attr
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def __tablename__(cls):
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# NOTE(jkoelker) use the pluralized name of the class as the table
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return cls.__name__.lower() + 's'
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BASEV2 = declarative.declarative_base(cls=QuantumBaseV2)
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