Remove cursor, user and context instead use a Transaction

trytond/backend/sqlite/table.py

 #This file is part of Tryton.  The COPYRIGHT file at the top level of
 #this repository contains the full copyright notices and license terms.
 
 from trytond.backend.table import TableHandlerInterface
 import logging
 import re
 
 
 class TableHandler(TableHandlerInterface):
     def __init__(self, cursor, model, module_name=None, history=False):
@@ skipping 173 matching lines @@
         self.cursor.execute(('ALTER TABLE "%s" ADD COLUMN "%s" %s' + default) %
                        (self.table_name, column_name, column_type))
 
         if column_format:
             # check if table is non-empty:
             self.cursor.execute('SELECT 1 FROM "%s" limit 1' % self.table_name)
             if self.cursor.fetchone():
                 # Populate column with default values:
                 default = None
                 if default_fun is not None:
-                    default = default_fun(self.cursor, 0, {})
+                    default = default_fun()
                 self.cursor.execute('UPDATE "' + self.table_name + '" '\
                                     'SET "' + column_name + '" = %s',
                                     (column_format(default),))
 
         self._update_definitions()
 
     def add_fk(self, column_name, reference, on_delete=None):
         logging.getLogger('init').warning(
             'Unable to add foreign key on table %s!' % \
             (self.table_name,))
@@ skipping 62 matching lines @@
 
     @staticmethod
     def drop_table(cursor, model, table, cascade=False):
         cursor.execute('DELETE from ir_model_data where '\
                            'model = \'%s\'' % model)
 
         query = 'DROP TABLE "%s"' % table
         if cascade:
             query = query + ' CASCADE'
         cursor.execute(query)