Tweak DateTime pickle representation to avoid using 370 bytes per DateTime, but ~80 bytes instead.

Retain backward compatibility with regular DateTime default serialisation.


git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@15569 20353a03-c40f-0410-a6d1-a30d3c3de9de

product/ERP5Type/ZopePatch.py

@@ -52,6 +52,7 @@ from Products.ERP5Type.patches import Connection
 from Products.ERP5Type.patches import copy_reg_patch
 from Products.ERP5Type.patches import PersistencePatch
 from Products.ERP5Type.patches import PersistentMapping
+from Products.ERP5Type.patches import DateTimePatch
 
 # for python2.3 compatibility
 import threading

product/ERP5Type/patches/DateTimePatch.py

+##############################################################################
+#
+# Copyright (c) 2007 Nexedi SARL and Contributors. All Rights Reserved.
+#                    Vincent Pelletier <vincent@nexedi.com>
+#
+# WARNING: This program as such is intended to be used by professional
+# programmers who take the whole responsability of assessing all potential
+# consequences resulting from its eventual inadequacies and bugs
+# End users who are looking for a ready-to-use solution with commercial
+# garantees and support are strongly adviced to contract a Free Software
+# Service Company
+#
+# This program is Free Software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License
+# as published by the Free Software Foundation; either version 2
+# of the License, or (at your option) any later version.
+#
+# This program 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 General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+#
+##############################################################################
+
+from DateTime import DateTime as DateTimeKlass
+
+STATE_KEY = 'str'
+
+def DateTime__setstate__(self, state):
+  if len(state) != 1 or STATE_KEY not in state:
+    # For backward compatibility
+    self.__dict__.update(state)
+  else:
+    self._parse_args(state[STATE_KEY])
+
+DateTimeKlass.__setstate__ = DateTime__setstate__
+  
+def DateTime__getstate__(self):
+  return {STATE_KEY: str(self)}
+
+DateTimeKlass.__getstate__ = DateTime__getstate__