Multiple discrimination levels while using Doctrine2

Question

I\'m using Doctrine2 to manage my model below: There\'s an abstract concept Content with a Composite pattern in Gallery, also an abstract concept <

Answer 1

I answer my question myself hoping it will help someone someday.

I opened a bug report in github for doctrine2 with this question and the answer is pretty clear: This is not supported.

UPDATED 2013/07/27

I just tried this with Doctrine 2.3.4 and it works as expected. :D

Answer 2

If they're all abstract I find it makes more sense to put DiscriminatorMap only in the top level entity.