The transaction will be automatic if my simple example is modified to
be:
instantiate
populate
aLocation.addCD(aCD);
aLocation.save();
The OM/Peer classes save() method iterate through collections to save
everything within a transaction. It is probably a bit confusing without
looking at the source, but using the addXXX methods then saving the top
most element saves everything within a transaction. Using the setYYY
methods does not have this effect and you need to do as Leon showed to
get a transaction.
john mcnally
Leon Messerschmidt wrote:
>
> > instantiate
> > populate
> >
> > aCD.setLocation(aLocation);
> >
> > aLocation.save();
> > aCD.save();
> >
> > john mcnally
> >
>
> Just my 2c. This example is probably good enough, but if you're using a
> transactional db and it is important to you, for whatever reason, can do
> this:
>
> DBConnection dbCon = BasePeer.beginTransaction()
> try
> {
> aLocation.save(dbCon);
> aCD.save(dbCon);
> BasePeer.commitTransaction (dbCon);
> }
> catch (Exception e)
> {
> Log.error (e);
> BasePeer.rollbackTransaction (dbCon);
> }
>
> ~ Leon
>
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