rhodecode/lib/dbmigrate/versions/__init__.py

# -*- coding: utf-8 -*-
"""
    rhodecode.lib.dbmigrate.versions.__init__
    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

    Package containing new versions of database models

    :created_on: Dec 11, 2010
    :author: marcink
    :copyright: (C) 2010-2012 Marcin Kuzminski <[e-mail]>
    :license: GPLv3, see COPYING for more details.
"""
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.
from sqlalchemy import *
from sqlalchemy.exc import DatabaseError
from sqlalchemy.orm import relation, backref, class_mapper, joinedload
from sqlalchemy.orm.session import Session
from sqlalchemy.ext.declarative import declarative_base

from rhodecode.lib.dbmigrate.migrate import *
from rhodecode.lib.dbmigrate.migrate.changeset import *

from rhodecode.model.meta import Base
from rhodecode.model import meta


def _reset_base(migrate_engine):
    ## RESET COMPLETLY THE metadata for sqlalchemy to use previous declared Base
    Base = declarative_base()
    Base.metadata.clear()
    Base.metadata = MetaData()
    Base.metadata.bind = migrate_engine
    meta.Base = Base