[OJB-developers] Documentation

[<Joa...@tp...>]

Hy,

we're currently looking for a good persistance layer for our project. The
only two real candidates left are ObJectBridge and Kodo JDO. ObJectBridge
seems to have a great design and to be powerfull enough (we implemented a
prototype using Castor, but were quite disapointed by it's abbilities (no
real polymorphism for example)). Our main problem with OJB at the moment is
the pretty steep learning curve. I tried the tests with MySQL and it took
quite some work to get the tests to run (and still 2 do fail, but that is
caused by MySQLs way to handle CLOBs (it strips spaces from the end)). I
understand that MySQL is not a prime target, but I think many developers
are turned away because of this. Our product should work with all kinds of
DBs, but we use MySQL for testing (along with PostgreSQL and MS SQL Server
(maybe Oracle later on)). I intend to write a walkthrough from downloading
to the first persisted class (maybe a bit more, it's intended primarily for
internal use, but I will happily contribute it if you want), because
although the tutorials are nice, they hide a lot of work needed in
build.xml and I think that the understanding of OBJ would be greater if a
step-by-step walkthrough would be provided.

One last question: it seems that supporting other Databases is just a
matter of modifing the DDL-scripts that set up the test database and
implementing an PlatformXXXImpl (to avoid spurious warings), is this
correct?

regards
Joachim Sauer