Move CreationUndone definition in manager module.

git-svn-id: https://svn.erp5.org/repos/neo/trunk@2312 71dcc9de-d417-0410-9af5-da40c76e7ee4

neo/storage/database/manager.py

@@ -18,6 +18,9 @@
 from neo import util
 from neo.exception import DatabaseFailure
 
+class CreationUndone(Exception):
+    pass
+
 class DatabaseManager(object):
     """This class only describes an interface for database managers."""
 

neo/storage/database/mysqldb.py

@@ -23,15 +23,13 @@ from array import array
 import string
 
 from neo.storage.database import DatabaseManager
+from neo.storage.database.manager import CreationUndone
 from neo.exception import DatabaseFailure
 from neo.protocol import CellStates, ZERO_OID, ZERO_TID
 from neo import util
 
 LOG_QUERIES = False
 
-class CreationUndone(Exception):
-    pass
-
 def splitOIDField(tid, oids):
     if (len(oids) % 8) != 0 or len(oids) == 0:
         raise DatabaseFailure('invalid oids length for tid %d: %d' % (tid,