Hi Jérémy, Yes, there's still no horizontal inheritance in Cayenne. It wasn't attractive from performance standpoint, so nobody really advocated for it to happen so far. Now that I've finally met a number of people who care about "horizontal", we are thinking of prioritizing it. So it may happen (relatively) soon.
> Is the game over ? Not really. You can just map all those tables as separate entities. Queries may be a little more annoying to write (especially if you have relationships *to* the base abstract entity), but it shouldn't be a show stopper. And outside of persistence operations the objects can all implement a single interface, so once you get them out of DB, you'll have the ability to treat them as children of a single ancestor. Andrus > On Apr 13, 2019, at 4:26 PM, Jérémy DE ROYER <[email protected]> > wrote: > > Hello, > > I’m trying to migrate (eo)models using horizontal inheritance (over multiple > frameworks) but without any success : it’s not possible to generate the Java > classes using Cayenne Modeler. > > I did a test with only one entity (and table) : that works great (and easy). > > I’ve created a second entity (and table) : that works great and easy. > > I’ve set up an horizontal inheritance between the two entities (and table) : > Cayenne forces me to use the same table for both entities > > In the 3.0's doc, I’ve read : “As of this writing Cayenne does not support > horizontal inheritance. It may in the future”. > > Is it still true in the 4.0 ? 4.1 ? Is the game over ? (as I can not use > vertical inheritance) 🤕 > > Thank’s, > > Jérémy
