/usr/lib/python2.7/dist-packages/trytond/transaction.py is in tryton-server 3.8.3-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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# this repository contains the full copyright notices and license terms.
from threading import local
from sql import Flavor
from trytond.tools.singleton import Singleton
from trytond import backend
class _TransactionManager(object):
'''
Manage transaction start/stop
'''
def __enter__(self):
return Transaction()
def __exit__(self, type, value, traceback):
Transaction().stop()
class _AttributeManager(object):
'''
Manage Attribute of transaction
'''
def __init__(self, **kwargs):
self.kwargs = kwargs
def __enter__(self):
return Transaction()
def __exit__(self, type, value, traceback):
for name, value in self.kwargs.iteritems():
setattr(Transaction(), name, value)
class _CursorManager(object):
'''
Manage cursor of transaction
'''
def __init__(self, cursor):
self.cursor = cursor
def __enter__(self):
return Transaction()
def __exit__(self, type, value, traceback):
Transaction().cursor.close()
Transaction().cursor = self.cursor
class Transaction(local):
'''
Control the transaction
'''
__metaclass__ = Singleton
cursor = None
database = None
close = None
user = None
context = None
create_records = None
delete_records = None
delete = None # TODO check to merge with delete_records
timestamp = None
def start(self, database_name, user, readonly=False, context=None,
close=False, autocommit=False):
'''
Start transaction
'''
Database = backend.get('Database')
assert self.user is None
assert self.database is None
assert self.cursor is None
assert self.close is None
assert self.context is None
if not database_name:
database = Database().connect()
else:
database = Database(database_name).connect()
Flavor.set(Database.flavor)
cursor = database.cursor(readonly=readonly,
autocommit=autocommit)
self.user = user
self.database = database
self.cursor = cursor
self.close = close
self.context = context or {}
self.create_records = {}
self.delete_records = {}
self.delete = {}
self.timestamp = {}
self.counter = 0
return _TransactionManager()
def stop(self):
'''
Stop transaction
'''
try:
self.cursor.close(close=self.close)
finally:
self.cursor = None
self.database = None
self.close = None
self.user = None
self.context = None
self.create_records = None
self.delete_records = None
self.delete = None
self.timestamp = None
def set_context(self, context=None, **kwargs):
if context is None:
context = {}
manager = _AttributeManager(context=self.context)
self.context = self.context.copy()
self.context.update(context)
if kwargs:
self.context.update(kwargs)
return manager
def reset_context(self):
manager = _AttributeManager(context=self.context)
self.context = {}
return manager
def set_user(self, user, set_context=False):
if user != 0 and set_context:
raise ValueError('set_context only allowed for root')
manager = _AttributeManager(user=self.user,
context=self.context)
self.context = self.context.copy()
if set_context:
if user != self.user:
self.context['user'] = self.user
else:
self.context.pop('user', None)
self.user = user
return manager
def set_cursor(self, cursor):
manager = _AttributeManager(cursor=self.cursor)
self.cursor = cursor
return manager
def new_cursor(self, autocommit=False, readonly=False):
Database = backend.get('Database')
manager = _CursorManager(self.cursor)
database = Database(self.cursor.database_name).connect()
self.cursor = database.cursor(autocommit=autocommit, readonly=readonly)
return manager
@property
def language(self):
def get_language():
from trytond.pool import Pool
Config = Pool().get('ir.configuration')
return Config.get_language()
if self.context:
return self.context.get('language') or get_language()
return get_language()
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