On 16 August 2010 17:29, Pedro Ferreira <jose.pedro.ferre...@cern.ch> wrote: > > >> Consider using one >> of these alternatives instead: >> >> * Set the IOTreeSet as an attribute directly on the persistent object. >> > > You mean on the persistent object I am using as key?
Yes. >> * Use http://pypi.python.org/pypi/zope.intid and use the intid for the >> key. (This uses http://pypi.python.org/pypi/zope.keyreference which >> uses the referenced object's oid and database name to perform the >> comparison, avoiding the need to load the persistent object.) >> > > This looks really nice. However it seems to depend on a lot of zope > libraries that I'm currently including: location, component, security... > well, I guess they're not that large. I will give it a look, maybe I'll use > it. I guess you could avoid the dependencies by using (obj._p_jar.db().database_name, obj._p_oid) as the key. Laurence _______________________________________________ For more information about ZODB, see the ZODB Wiki: http://www.zope.org/Wikis/ZODB/ ZODB-Dev mailing list - ZODB-Dev@zope.org https://mail.zope.org/mailman/listinfo/zodb-dev