[bfss] fix file update to ensure file's content is available on the fs asap...
and not only at commit time. So it's consistent with entity creation behaviour.
The new file is created at assignement time and removed if the commit is
rollbacked.
# pylint: disable-msg=W0401,W0614# copyright 2003-2010 LOGILAB S.A. (Paris, FRANCE), all rights reserved.# contact http://www.logilab.fr/ -- mailto:contact@logilab.fr## This file is part of CubicWeb.## CubicWeb is free software: you can redistribute it and/or modify it under the# terms of the GNU Lesser General Public License as published by the Free# Software Foundation, either version 2.1 of the License, or (at your option)# any later version.## CubicWeb 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 Lesser General Public License for more# details.## You should have received a copy of the GNU Lesser General Public License along# with CubicWeb. If not, see <http://www.gnu.org/licenses/>."""exceptions used in the core of the CubicWeb web application"""__docformat__="restructuredtext en"fromcubicweb._exceptionsimport*classPublishException(CubicWebException):"""base class for publishing related exception"""classRequestError(PublishException):"""raised when a request can't be served because of a bad input"""classNothingToEdit(RequestError):"""raised when an edit request doesn't specify any eid to edit"""classProcessFormError(RequestError):"""raised when posted data can't be processed by the corresponding field """classNotFound(RequestError):"""raised when a 404 error should be returned"""classRedirect(PublishException):"""raised to redirect the http request"""def__init__(self,location):self.location=locationclassDirectResponse(Exception):def__init__(self,response):self.response=responseclassStatusResponse(Exception):def__init__(self,status,content=''):self.status=int(status)self.content=contentclassInvalidSession(CubicWebException):"""raised when a session id is found but associated session is not found or invalid """classRemoteCallFailed(RequestError):"""raised when a json remote call fails """def__init__(self,reason=''):super(RequestError,self).__init__()self.reason=reasondefdumps(self):fromcubicweb.webimportjsonreturnjson.dumps({'reason':self.reason})classLogOut(PublishException):"""raised to ask for deauthentication of a logged in user"""def__init__(self,url):super(LogOut,self).__init__()self.url=url