Hi All,
I am writing a product to manage the back end operations of users.I need to
store lots of user info.My first plan was to use ZSQL but then I read about
ZODB and more specifically OOBTrees and BTreeFolder2. My objective is to store
user related stuff on ZODB but not litter the ZODB but to instead organize into
folders. I read the test code and the BTreeFolder.py to figure out the API.
I have a few doubts to clarify:
In this method I tried to add two BTFs and an OOBTree:
def test3():
f = BTreeFolder2('sufest')
f2 = BTreeFolder2('somefolder')
f3 = BTreeFolder2('somefolder2')
f._setObject(f2.id, f2)
f._setObject(f3.id, f3)
uniq_id = f.generateId()
obT = OOBTree()
obT['Auth'] = {'a':1,'b':2}
f._setOb(uniq_id, obT)
lst = f.objectMap()
return f._getOb(uniq_id)
Now the functions returns an error:
Traceback (innermost last):
Module ZPublisher.Publish, line 115, in publish
Module ZPublisher.mapply, line 88, in mapply
Module ZPublisher.Publish, line 41, in call_object
Module Products.ExternalMethod.ExternalMethod, line 225, in __call__
- __traceback_info__: ((), {}, None)
Module /var/lib/zope2.9/instance/sandbox/Products/Test/Extensions/Tst.py,
line 40, in test3
Module Products.BTreeFolder2.BTreeFolder2, line 211, in _getOb
AttributeError: 'BTrees._OOBTree.OOBTree' object has no attribute '__of__'
I beleive this is because OOBTrees don't have a meta_type which the _getOb
function tries to access. Enlighten me :)
Other methods like objectMap and getBatchObjectListing work fine though.
My question is how do we properly a store any item other than zope objects like
strings,dicts or OOBTrees in a BTreeFolder2 and how to retrieve them back.
Zope seems interesting to work with but at times really confuses me especially
acquisition concepts.
Regards,
SZ
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