Hi: I recently took a closer look at BoboPOS operation, and I am puzzled: a pack operation doesn't seem to remove obsolete instances (even though it compresses the db significantly.) My applications work as expected, but the db size increases unnecessarily over time. Below is a simple application I use to test this. I would expect that, after a pack, only 1 Timestamp instance would be in the db, as only 1 can be reached from the root object at any time. Instead, I noticed that obsolete Timestamp instances are still present. Can someone tell me why? Platform: Sun Solaris

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import os, sys path = os.path lib, tail = path.split(__file__) import DocumentTemplate import BoboPOS import time datadir = path.join(lib, 'var', 'Data') class Container(BoboPOS.Persistent): """ Container """ def __init__(self): """ init """ self._timestamp = None def index_html(self): """ default method """ if self._timestamp is not None: return self._timestamp._time return 'No timestamp' def pack(self): """ pack database """ db._jar.db.pack(None, 0) return 'pack OK' def clear(self): """ clear """ self._timestamp = None return self.index_html() def stamp(self): """ stamp """ self._timestamp = Timestamp() return self.index_html() class Timestamp(BoboPOS.Persistent): """ Item """ def __init__(self): """ init """ self._time = time.ctime(time.time()) db = BoboPOS.PickleDictionary(path.join(datadir, 'tsdb')) if db.has_key('Container'): bobo_application = db['Container'] else: bobo_application = db['Container'] = Container() get_transaction().commit() <<< -- =================================================================== Jan Decaluwe === Easics === Design Manager === VHDL-based ASIC design services === Tel: +32-16-395 600 =================================== Fax: +32-16-395 619 Interleuvenlaan 86, B-3001 Leuven, BELGIUM mailto:jand@easics.be http://www.easics.com