Werner,
I've tested again and againg.
See inline...
> >3. Third and most important to me is on proper way of adding
> Parts (because
> >they depend of Items due to 1:M).
> >Can I add part like this:
> >
> > Item i = db.load(...);
> > Part p = new Part(....);
> > p.setItem(i);
// i.setLastUpdate(new Date());
> > db.create(p);
> > db.commit()
> >
> >What is the proper way of adding many-side objects?
> Practically, it should not make a differnce whether you set the
> Item (paren) on the part or the other way around. You could try ...
I've tried and it works only as I've written above.
>
> Item i = db.load(...);
> Part p = new Part(....);
> db.create(p);
> i.addPart (p);
> db.commit()
This will not work, and the create(p) will fail with the message that
parts.itemID cannot be null.
Another, IMO, silly thing is that I can not update a field in the Items object
during this transaction.
If i try to, e.g. call i.setLastUpdate(new Date()), the commit() of the
transaction will hang.
Is this OK?! I don't think it is...
>
> Please note that the db.create() should be before the i.add() in
> case you are using a key generator.
>
This doesn't work, create will fail.
Regards,
Emir
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