[Zope] XMLDocument "WrongDocument" error and object comparision...

[Anthony Baxter]

I'm playing with XML Document, and I'm finding that I'm getting a
bogus WrongDocument error from the sample file. If I open up the
'slides' document and hit 'Change' I'm getting a WrongDocument
exception at line 433 of Node.py. 

        if document and ownerDocument and document != ownerDocument:
             raise ZDOM.WrongDocumentException()

(I also see this when I try to create a new document)

Putting a 
        print "DOC", document, ownerDocument
        print "DOC2", id(document), id(ownerDocument)
on the line before it gives back

DOC <Document instance at 863bf90> <Document instance at 863bf90>
DOC2 139736152 139811552

so they _look_ like the same object, but comparision is failing. 

On a hunch, I tried changing the code to compare document.aq_base 
and ownerDocument.aq_base, and this works. I have _no_ idea if this is 
correct, though.

I'm running the latest CVS, including Jim's changes to Acquisition.c (r1.36)
for numeric object comparision - could this be the problem?

anyone?

Anthony

(patch to make it work for me: )
--- Node.py     2000/02/05 00:33:16     1.18
+++ Node.py     2000/02/24 04:17:55
@@ -430,7 +430,7 @@
             raise ZDOM.HierarchyRequestException('Node type does not support children.')
         document=newChild.getOwnerDocument()
         ownerDocument=self.getOwnerDocument()
-        if document and ownerDocument and document != ownerDocument:
+        if document and ownerDocument and document.aq_base != ownerDocument.aq_base:
             raise ZDOM.WrongDocumentException()
         if newChild.getNodeType() == DOCUMENT_FRAGMENT_NODE:
             newChildren=newChild