Hi,
While fixing some bugs in zope.app.container,
I've also modified the implementation of the BTreeContainer,
by not inheriting from the SampleContainer, and directly accessing the btree.
This had remained as a TODO in the btree.py file, so I did it, but...
The result is all previous persisted BTreeContainers (such as PrincipalFolder)
are broken because the btree used to be stored in self._SampleContainer__data,
while the new implementation stores it in self._BTreeContainer__data.
So I've added a property to offer a transparent backward compatibility:
def _get__data(self):
try:
return self._BTreeContainer__data
except:
return self._SampleContainer__data
def _set__data(self, value):
try:
self._BTreeContainer__data = value
except:
self._SampleContainer__data = value
def _del_data(self):
try:
del self._BTreeContainer__data
except:
del self._SampleContainer__data
__data = property(_get__data, _set__data, _del_data)
Do you think it is safe? Is there any better solution for this? Should I rather
write an evolution script? Or should I revert all this back to inheriting from
SampleContainer?
Christophe
_______________________________________________
Zope-Dev maillist - [email protected]
http://mail.zope.org/mailman/listinfo/zope-dev
** No cross posts or HTML encoding! **
(Related lists -
http://mail.zope.org/mailman/listinfo/zope-announce
http://mail.zope.org/mailman/listinfo/zope )
