[FIX] orm._auto_init: fallback to copy method when altering in-place varchar columns failed.

When a varchar column has a dependence on a view, we cannot change the size in-place,
we need to manually re-create the column with the correct type.

bzr revid: chs@openerp.com-20140217182045-qor70r3gb0fch2ki

1 files changed, 16 insertions, 1 deletions

diff --git a/openerp/sql_db.py b/openerp/sql_db.py
index de9d21dcd82..fb214fa068b 100644
--- a/openerp/sql_db.py
+++ b/openerp/sql_db.py
@@ -3,7 +3,7 @@
 #
 #    OpenERP, Open Source Management Solution
 #    Copyright (C) 2004-2009 Tiny SPRL (<http://tiny.be>).
-#    Copyright (C) 2010-2013 OpenERP s.a. (<http://openerp.com>).
+#    Copyright (C) 2010-2014 OpenERP s.a. (<http://openerp.com>).
 #
 #    This program is free software: you can redistribute it and/or modify
 #    it under the terms of the GNU Affero General Public License as
@@ -27,8 +27,10 @@ the database, *not* a database abstraction toolkit. Database abstraction is what
 the ORM does, in fact.
 """
 
+from contextlib import contextmanager
 from functools import wraps
 import logging
+import time
 import psycopg2.extensions
 from psycopg2.extensions import ISOLATION_LEVEL_AUTOCOMMIT, ISOLATION_LEVEL_READ_COMMITTED, ISOLATION_LEVEL_REPEATABLE_READ
 from psycopg2.pool import PoolError
@@ -344,6 +346,19 @@ class Cursor(object):
         """
         return self._cnx.rollback()
 
+    @contextmanager
+    @check
+    def savepoint(self):
+        """context manager entering in a new savepoint"""
+        name = hex(int(time.time() * 1000))[1:]
+        self.execute("SAVEPOINT %s" % (name,))
+        try:
+            yield
+            self.execute('RELEASE SAVEPOINT %s' % (name,))
+        except Exception:
+            self.execute('ROLLBACK TO SAVEPOINT %s' % (name,))
+            raise
+
     @check
     def __getattr__(self, name):
         return getattr(self._obj, name)