From the standpoint of trying to prevent reinventing wheels all over
the place it sounds like a good idea to re-use a Zope 3 component.
However, beware of backwards-compatibility in terms of software and in
terms of persistent data generated by the existing version. Like Tres
always says, "persistence means always having to say you're sorry".
Essentially, if you can do it while retaining backwards compatibility
I'd be all for it.
Hmm, this depends on how non-trivial or otherwise the upgrade steps can
be, and what backwards compatibility is acceptable.
I'd propose the following:
- the existing uid classes remain with deprecation warnings until they
can be removed, and also have a big "upgrade" button in the ZMI that
turns them into the "new tool/utility" and imports existing data
- once upgraded, IObjectAdded events fired by importing new content
convert and register uids in the new scheme
- instead of using the catalog, the "tool/utility" would actually
retrieve the objects by oid, and then check permissions etc directly to
mimic the CMF catalog (expires, allowedRolesAndUsers etc)
- for BBB (default), the "tool/utility" would additionally annotate
the objects with UidAnnotations (as currently) and these can be indexed
in the catalog. this could be turned off by not registering an adapter
(it's only needed for BBB I think)
I suppose the slight deviation from BBB is that if someone is using a
custom catalog (for example a "day-of-week-to-show" flag to provide
random search results), they'll also need to provide some sort of
customisation when objects are fetched by uid to get the same thing to
happen. Given the number of people actually using CMFUid and the
obscurity of the use-case, I think this might be acceptable to just
document (and/or provide some sort of adapter-based customisation so
Does that sound BBB enough? I can't think of anything else that might
break but that's what tests are for right :-) ?
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