[Zope] Re: Upgrade woes: BTreeFolder --> BTreeFolder2

[Laurence Rowe]

Try deleting them with del from python (eg from zopectl debug) rather 
than through the ZMI.

Laurence

Ken Ara wrote:
> I have a couple of outstanding issues following an
> otherwise successful upgrade from Zope 2.7.4 to
> 2.10.3-final.
> 
> One key application used the old DocumentLibrary
> product
> (http://www.zope.org/Members/Kaivo/DocumentLibrary). I
> have since reimplemented most of the functionality and
> migrated out the content, but I am unable to delete
> the old instances of the 'DocumentStore' class. This
> class is based on the old BTreeFolder which, as far as
> I can tell, cannot be be used in current versions of
> Zope. 
> 
> Starting Zope with the old BTreeFolder fails:
> 
> Traceback (most recent call last):
>   File
> "/usr/local/zope/lib/python/OFS/Application.py", line
> 703, in import_product
>     product=__import__(pname, global_dict,
> global_dict, silly)
>   File
> "/usr/local/zope/client0/Products/BTreeFolder/__init__.py",
> line 89, in ?
>     import BTreeFolder
>   File
> "/usr/local/zope/client0/Products/BTreeFolder/BTreeFolder.py",
> line 91, in ?
>     from BTree import BTree
> ImportError: No module named BTree
> 
> Swapping in BTreeFolder2 allowed me to access existing
> instances of DocumentLibrary, however attempting to
> delete the old instances of DocumentStore fails with
> the following error:
> 
> Traceback (innermost last):
>   Module ZPublisher.Publish, line 119, in publish
>   Module ZPublisher.mapply, line 88, in mapply
>   Module ZPublisher.Publish, line 42, in call_object
>   Module OFS.ObjectManager, line 524, in
> manage_delObjects
>   Module OFS.ObjectManager, line 379, in _delObject
>   Module zope.event, line 23, in notify
>   Module zope.component.event, line 26, in dispatch
>   Module zope.component._api, line 130, in subscribers
>   Module zope.component.registry, line 290, in
> subscribers
>   Module zope.interface.adapter, line 535, in
> subscribers
>   Module zope.component.event, line 33, in
> objectEventNotify
>   Module zope.component._api, line 130, in subscribers
>   Module zope.component.registry, line 290, in
> subscribers
>   Module zope.interface.adapter, line 535, in
> subscribers
>   Module OFS.subscribers, line 108, in
> dispatchObjectWillBeMovedEvent
>   Module zope.app.container.contained, line 181, in
> dispatchToSublocations
>   Module OFS.subscribers, line 88, in sublocations
>   Module Products.BTreeFolder2.BTreeFolder2, line 368,
> in objectValues
>   Module Products.BTreeFolder2.BTreeFolder2, line 347,
> in objectIds
> AttributeError: 'NoneType' object has no attribute
> 'keys'
> 
> If I could install the original BTreeFolder in Zope
> 2.10.3 - if only briefly - would that enable me to
> delete the old instances? Other ideas?
> 
> Thanks,
> Ken
> 
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