And explicitely disallow pickling temporary objects to fix TestERP5Type.test_03

git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@43007 20353a03-c40f-0410-a6d1-a30d3c3de9de

product/ERP5Type/mixin/temporary.py

@@ -26,6 +26,7 @@
 #
 ##############################################################################
 
+from cPickle import PicklingError
 from Acquisition import aq_base
 from Products.ERP5Type.Accessor.Constant import PropertyGetter as \
   PropertyConstantGetter
@@ -38,6 +39,10 @@ class TemporaryDocumentMixin(object):
   isTempDocument = PropertyConstantGetter('isTempDocument', value=True)
   __roles__ = None
 
+  def __getstate__(self):
+    # disallow persistent storage
+    raise PicklingError("Temporary objects can't be pickled")
+
   def reindexObject(self, *args, **kw):
     pass