> This interests me. I will be doing a project where I
> don't care much
> what the primary keys are, only that they are there
> and are unique
> (obviously). Ideally, I would have the database
> autogenerate a
> sequence of numbers, but there doesn't seem to be a
> way to get the
> Container to do this for me?
Using database for it seems messy for me - you insert
the row, and everything is fine (assumed your sequence
or autonumbering worked), but getting this ID out of
database is not convenient (and highly database
dependent). That's why I prefer to use separate bean
to generate ID's
> Could you describe your sequence generator? It
> sounds like the thing
> that I need.
I posted archive with complete source a week ago on
the list (look in the archive). There is also ejbutil
project on sourceforge
( they also have something like this )
And here is short outline what bean does:
It has primary key ( string ID to locate it ),
it has increment, current value and method getNext()
which advances it.
Whenever I need an ID, I lookup this bean by primary
key ( I store value of this primary key as String data
in ejb environment ), and then just call getNext()
no magic, just some voodoo :)
=====
Konstantin Priblouda ( ko5tik ) Freelance Software developer
< http://www.pribluda.de > < play java games -> http://www.yook.de >
< render charts online -> http://www.pribluda.de/povray/ >
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