[XML-SIG] xml.dom.core.Document objects don't pickle (BUG WITH PATCH)

[Lalo Martins]

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If you try to pickle a dom Document object you'll get a pickle
error because it stores the xml module as an attribute.

My reading of the Node class suggests you didn't intend to
pickle the Node attributes at all, just the _nodeData and the
Document reference, right?

To do that, it's not enough to just provide a __getinitargs__
method - you also need a __getstate__ which returns an empty
dictionary. I added one to my copy and it works fine.

[]s,
                                               |alo
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--- core.py.orig	Fri Sep 22 02:39:45 2000
+++ core.py	Fri Sep 22 03:22:13 2000
@@ -318,6 +318,9 @@
     def __getinitargs__(self):
         return self._node, self._document
 
+    def __getstate__ (self):
+	return {} # no pickling
+	
     # The following two methods implement handling of properties; references
     # to attributes such as .parentNode are redirected into calls to 
     # get_parentNode or set_parentNode.

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