SVN: Zope/trunk/src/OFS/ObjectManager.py remove parent pointer while exporting

Log message for revision 120865:
  remove parent pointer while exporting

Changed:
  U   Zope/trunk/src/OFS/ObjectManager.py

-=-
Modified: Zope/trunk/src/OFS/ObjectManager.py
===================================================================
--- Zope/trunk/src/OFS/ObjectManager.py	2011-03-11 14:48:34 UTC (rev 120864)
+++ Zope/trunk/src/OFS/ObjectManager.py	2011-03-11 14:53:59 UTC (rev 120865)
@@ -22,6 +22,7 @@
 import os
 import re
 import sys
+import transaction
 
 from AccessControl import ClassSecurityInfo
 from AccessControl.class_init import InitializeClass
@@ -584,11 +585,25 @@
 
         cfg = getConfiguration()
         f = os.path.join(cfg.clienthome, '%s.%s' % (id, suffix))
-        if toxml:
-            exportXML(ob._p_jar, ob._p_oid, f)
-        else:
-            ob._p_jar.exportFile(ob._p_oid, f)
 
+        ob = aq_base(ob)
+        parent = getattr(ob, '__parent__', _marker)
+        if parent is not _marker:
+            sp = transaction.savepoint(True)
+            del ob.__parent__
+            # create a savepoint so that the export includes the version
+            # without a __parent__ pointer
+            transaction.savepoint(True)
+        try:
+            if toxml:
+                exportXML(ob._p_jar, ob._p_oid, f)
+            else:
+                ob._p_jar.exportFile(ob._p_oid, f)
+        finally:
+            if parent is not _marker:
+                # roll back so that we don't actually remove the __parent__
+                sp.rollback()
+
         if REQUEST is not None:
             return self.manage_main(self, REQUEST,
                 manage_tabs_message=

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