> > Is there any way to make a CMP entity EJB use a automatic value as its
> > primary key, so that in the create method you dont have to pass it the
> > primary key value ?
> >
> > If anyone has any idea I would really appreciate !
>
> Hmmm. The closest I've come to this is to write an MBean which
> generates keys from sequences in a database. Then in ejbCreate you
> connect to the MBean and get a new PK from it...
How about this:
One CMP bean with primary key being the bean name and an additional field
currentId. It has a method nextId(int batchSize) which returns currentId and
also adds batchSize to currentId. This can then be called by a stateless
session bean that has a method nextId(String beanName), which calls the CMP
bean to get the next id. It stores the next id from the CMP bean, and can
then internally increment this counter batchSize times.
Anyone has any objections? Would be pure EJB, and fast (only hits DB for
every batchSize key generation request).
/Rickard
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