> The "EJB Design Patterns" book, by Floyd Marinescu,
> states that autoincrement cannot be done when using
> CMP. It seems that this is no longer the case.
Floyd is not the brightest bulb.
> According to the MySQL website, this can be done with
> the new beta version of Connector/J. See
> The question is, how to use the MySQL AUTO_INCREMENT
> with CMP?
Is is done by the container. This is in CVS HEAD (JBoss 4.0)
> Specifically, how does one retrieve the
> auto-generated id number when creating the ejb
> object, in ejbCreate or ejbPostCreate, so that the
> entity data object can be updated?
You can't, but the container can.
> Also, is it possible to use xdoclet to specify that a
> pk-field is autoincremented, so that JBoss can create
> the table?
Not yet. I think it is in the works. XDoclet is always a little behind, because it is currently maintained at the XDoclet site.
> I hear that support for autoincrement was commented
> out of JBoss recently, due to a build problem. So it
> seems that we will need to wait a bit until
> autoincrement is back ported to JBoss 3.2 (?).
Alex is working on it right now.
> I believe this is an exciting new feature,
> preferrable to coding a primary key generation
> strategy, although perhaps a bit more RDBMS
> Anyone share my bloodlust for the cutting edge?
> Please share what you know about how to implement
> autoincrement using JBoss, CMP, and MySQL.
I do. I can't wait to try it with the Forums on JBoss project. You should read this post: