[ZODB-Dev] odd KeyError in OOSets

[Nicholas Henke]

Hey guys -- I am running zodb-3.1.1 and python2.2.2 with the latest cvs
version of IndexedCatalog. I am playing with using OOSets instead of
Python Lists as the data store for the index data, and have hit a
strange error. I am getting a KeyError, but if I look at all of the
data, it would appear that it is in the OOSet. Below is some data
printouts -- the object I am trying to remove, with the OOSet, as well
as the id() of each of them. 

The relevant code is:
def index_item(self, value, object):
    index = self._index
    if not index.has_key(value):
        index[value] = OOSet()
    elif self._unique:
       raise UniqueError, \
              "value %s is already in the index %s" % (`value`, `self`)

    idx = index[value]

    # Check for duplicates
    if not object in idx:
        index[value] = idx
        idx.insert(object)
    else:
       # we already had that in the db :(
       pass

def unindex_item(self, value, object):
   index = self._index

   current = index[value]
   index[value] = current
   try:
       current.remove(object)
   except KeyError:
       print "KEYERROR, looking for %s, while having %s"
%(object,current)
       print "Object id:", id(object)
       for o in current:
           print "Obj:", o, "id:", id(o)
       raise

Thoughts?

KEYERROR, looking for <ClubmaskObject node2 at 0x83381c8>, while having
OOSet([<ClubmaskObject node0 at 0x8333e48>, <ClubmaskObject node3 at
0x8335c60>, <ClubmaskObject node6 at
0x8336848>, <ClubmaskObject node7 at 0x83376c8>, <ClubmaskObject node2
at 0x83381c8>, <ClubmaskObject node1 at 0x8336c80>, <ClubmaskObject
node4 at 0x8339740>])
Object id: 137593288
Obj: <ClubmaskObject node0 at 0x8333e48> id: 137576008
Obj: <ClubmaskObject node3 at 0x8335c60> id: 137583712
Obj: <ClubmaskObject node6 at 0x8336848> id: 137586760
Obj: <ClubmaskObject node7 at 0x83376c8> id: 137590472
Obj: <ClubmaskObject node2 at 0x83381c8> id: 137593288
Obj: <ClubmaskObject node1 at 0x8336c80> id: 137587840
Obj: <ClubmaskObject node4 at 0x8339740> id: 137598784
Exception in thread ResourceManager:
Traceback (most recent call last):
  File "/var/tmp/python2.2.2-2.2.2-root/usr/lib/python2.2/threading.py",
line 408, in __bootstrap
    self.run()
  File "resource_manager.py", line 48, in run
    self.go()
  File "resource_manager.py", line 85, in go
    self._setupManagers()
  File
"/usr/lib/python2.2/site-packages/clubmask/resource_manager/ResourceManager.py", line 50, in _setupManagers
    self._registerResourceManager(rm)
  File
"/usr/lib/python2.2/site-packages/clubmask/resource_manager/ResourceManager.py", line 56, in _registerResourceManager
    manager_instance = manager(db)
  File
"/usr/lib/python2.2/site-packages/clubmask/resource_manager/Machine.py",
line 37, in __init__
    self.supermon.getStaticData()
  File
"/usr/lib/python2.2/site-packages/clubmask/supermon/SupermonInterface.py", line 365, in getStaticData
    self.findNodes()
  File
"/usr/lib/python2.2/site-packages/clubmask/supermon/SupermonInterface.py", line 182, in findNodes
    self.newNode(nodeid)
  File
"/usr/lib/python2.2/site-packages/clubmask/supermon/SupermonInterface.py", line 203, in newNode
    obj.roletype = "compute"
  File
"/usr/lib/python2.2/site-packages/clubmask/database/ClubmaskClass.py",
line 152, in __setattr__
    IndexedObject.__setattr__(self, name, value)
  File "/usr/lib/python2.2/site-packages/IndexedCatalog/Object.py", line
68, in __setattr__
    self._ic_update(catalog, name, value, oldvalue)
  File "/usr/lib/python2.2/site-packages/IndexedCatalog/Object.py", line
129, in _ic_update
    catalog.index.update_one(name, self, newvalue, oldvalue)
  File "/usr/lib/python2.2/site-packages/IndexedCatalog/Indexes.py",
line 145, in update_one
    self.unindex_attribute(name, oldvalue, object)
  File "/usr/lib/python2.2/site-packages/IndexedCatalog/Indexes.py",
line 122, in unindex_attribute
    self._indexes[name].unindex_item(value, data)
  File "/usr/lib/python2.2/site-packages/IndexedCatalog/Indexes.py",
line 309, in unindex_item
    current.remove(object)
KeyError: <ClubmaskObject node2 at 0x83381c8>

Nic
-- 
Nicholas Henke
Penguin Herder & Linux Cluster System Programmer
Liniac Project - Univ. of Pennsylvania