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#! /usr/bin/env python
# -*- coding: utf-8 -*-
# newspipe - A Web based news aggregator.
# Copyright (C) 2010-2016 Cédric Bonhomme - https://www.cedricbonhomme.org
#
# For more information : https://github.com/Newspipe/Newspipe
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero 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 Affero General Public License for more details.
#
# You should have received a copy of the GNU Affero General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
__author__ = "Cedric Bonhomme"
__version__ = "$Revision: 0.4 $"
__date__ = "$Date: 2013/11/05 $"
__revision__ = "$Date: 2014/04/12 $"
__copyright__ = "Copyright (c) Cedric Bonhomme"
__license__ = "GPLv3"
from .feed import Feed
from .role import Role
from .user import User
from .article import Article
from .icon import Icon
from .category import Category
__all__ = ['Feed', 'Role', 'User', 'Article', 'Icon', 'Category']
import os
from werkzeug import generate_password_hash
from sqlalchemy.engine import reflection
from sqlalchemy.schema import (
MetaData,
Table,
DropTable,
ForeignKeyConstraint,
DropConstraint)
def db_empty(db):
"Will drop every datas stocked in db."
# From http://www.sqlalchemy.org/trac/wiki/UsageRecipes/DropEverything
conn = db.engine.connect()
# the transaction only applies if the DB supports
# transactional DDL, i.e. Postgresql, MS SQL Server
trans = conn.begin()
inspector = reflection.Inspector.from_engine(db.engine)
# gather all data first before dropping anything.
# some DBs lock after things have been dropped in
# a transaction.
metadata = MetaData()
tbs = []
all_fks = []
for table_name in inspector.get_table_names():
fks = []
for fk in inspector.get_foreign_keys(table_name):
if not fk['name']:
continue
fks.append(ForeignKeyConstraint((), (), name=fk['name']))
t = Table(table_name, metadata, *fks)
tbs.append(t)
all_fks.extend(fks)
for fkc in all_fks:
conn.execute(DropConstraint(fkc))
for table in tbs:
conn.execute(DropTable(table))
trans.commit()
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