The DBConnection class is accessible via the
__init__(self, name=None, debug=False, debugOutput=False, cache=True, style=None, autoCommit=True, debugThreading=False, registry=None, logger=None, loglevel=None)
This is called for each new class; we use this opportunity
to create an instance method that is bound to the class
and this connection.
Expire all instances of objects for this connection.
for more information.