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From "Michael Gentry" <blackn...@gmail.com>
Subject Re: Inheritance not resolving
Date Mon, 26 Feb 2007 21:53:57 GMT
I'm not sure if this page will help at all:

http://cayenne.apache.org/doc20/modeling-inheritance.html

Also, could you show us the SELECT that is issued when you try query a KlassB?

Thanks!

/dev/mrg


On 2/26/07, Nick Peeples <nick.peeples@gmail.com> wrote:
> I do have the Qualifier filled in. Everything that is online in either
> the user doc or the modeler doc is currently being done, that is why
> this is confusing me a little bit.
>
> A little bit more, the objects that are in the cache are even not
> being subclasses properly either. Just poking around a bit, if I do a:
>
> return (KlassB) DataObjectUtils.objectForPk(context, obj.getObjectId());
>
> on an object that i know is of KlassB extends KlassA, it gets an Cast
> error. The obj was put in the cache by a:
>
> SelectQuery query = new SelectQuery(KlassA.class);
>
> Not sure if that helps at all.
>
> -Nick
>
> On 2/26/07, Michael Gentry <blacknext@gmail.com> wrote:
> > Make sure in Cayenne Modeler, under the ObjEntity (Entity tab) for
> > your subclasses, you have the Qualifier filled in.  If not, that could
> > be the issue.
> >
> > /dev/mrg
> >
> >
> > On 2/26/07, Nick Peeples <nick.peeples@gmail.com> wrote:
> > > Yes, I have Cayenne pumping out all the logs through log4j. If I do
> > > the SelectQuery for the highest class, it returns all the rows, so in
> > > that regard it is working, and if i go down the chain towards the
> > > bottom, the exclusion rules do kick in, and the proper classes are
> > > returned. It just the lower subclasses are not being resolved to their
> > > proper, lowest class.
> > >
> > > -Nick
> > >
> > > On 2/26/07, Michael Gentry <blacknext@gmail.com> wrote:
> > > > Do you have SQL logging turned on?  That might could help quite a bit.
> > > >
> > > > Thanks,
> > > >
> > > > /dev/mrg
> > > >
> > > >
> > > > On 2/26/07, Nick Peeples <nick.peeples@gmail.com> wrote:
> > > > > I am relatively new to Cayenne, but have run into a recent problem.
I
> > > > > am using the single-table inheritance method, and I have a few
> > > > > subclasses of a generic object. According to the docs and wiki, by
> > > > > default they will be generated into the lowest possible subclass,
but
> > > > > this doesn't seem to be happening. I can create them just fine, the
> > > > > qualifiers are all setup, but when I attempt a query,
> > > > > http://cayenne.apache.org/doc20/handling-inheritance.html, for the
> > > > > generic class, they are not resolving. The qualifier is being set
> > > > > correctly in the database.
> > > > >
> > > > > I am fully happy to attempt to solve this, but I don't have the
> > > > > slightest where to start. So I guess my question is, where would
I
> > > > > start, or did i miss some obscure setting that I forgot to set?
> > > > >
> > > > > Thank you,
> > > > > Nick
> > > > >
> > > > > ps - setResolvingInheritance(true) doesn't help... but as far as
docs
> > > > > it is the default, so I didn't expect much.
> > > > >
> > > >
> > >
> >
>

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