On Sep 14, 2007, at 6:36 PM, Gilberto C Andrade wrote:
Are you saying that I can use cayenne 3 (but just 3.0M2 release)?
Yes. Still if you are limited to JDK 1.4, I would strongly recommend
to stay on 2.0.x (see below).
As we are beginning with cayenne, what features does version 3 have
that
make it better than 2.0.3?
My favorite new features are lifecycle callbacks and pluggable query
cache. Out of the things that are coming post M2 I would single out
vertical inheritance. But consider that:
(a) 2.0.x is mature Cayenne API that's been used by many people in
production for a number of years, so it is quite capable, never mind
the new bells and whistles.
(b) 2.0.x is stable *now*.
(c) 2.0.x is supported on JDK 1.4, i.e. bugs will be fixed if found;
while you may find yourself in a situation when have to backport bug
fixes to 3.0M2 from the later 3.0 milestones.
(d) Migration from 2.0.x to 3.0 down the road is expected to be
fairly straightforward. Stable core API and easy upgrades is one of
the things we are very proud of (still worth checking the 3.0 RELEASE-
NOTES from time to time for deprecated API to stay away from it. Two
notable things are "derived" entities, and DataContext events).
http://retrotranslator.sourceforge.net/
Note that I haven't tried this myself, and will be curious to hear
the
results if somebody does.
We thought about it some time ago, but we didn't have enough knowledge
to put something like that in production and support it.
But I think in our situation this may happen and sure we will try
report
the results to the mail list.
True - IMO that should be used as a last resort.
Andrus
