[Zope-Annce] [Ann] TemporaryStorage-Version patch

[Dieter Maurer]

Zope 2.5 comes with builtin session support. An undoable storage is
quite inefficient to store large amounts of rapidly changing data such
as typical session data. Therefore, a RAM based storage, the so called
TemporaryStorage, was integrated as container mainly for session
data. Unfortunately, this storage does not implement versions. There
is a high chance that using versions leads to a "TemporaryStorage does
not support versions" exception, even if you are unaware to use
sessions. At least, I made this experience using CMF.

The patch lets TemporaryStorage ignore versions, when the
environment variable ZOPE_TEMPSTORE_IGNORE_VERSIONS is set (to a
non-empty value). This seams adequate for session data, as sessions
seem orthogonal to versions. Be aware, however, that this may hit
you. As some objects in the version are usually different from the
corresponding objects outside the version, session information may be
compatible with just one and not both of them.

Download: <http://www.dieter.handshake.de/pyprojects/zope/TempStoreSession.pat>


Dieter