[hibernate-dev] Adding a Byte Buddy byte code provider to Hibernate

Hello everybody, I was wondering how big the chances are to get a Byte Buddy bytecode provider into Hibernate? Byte Buddy has matured a lot over the last two years and it aims a lot on performance what is something Hibernate could benefit of. There are comparion charts posted on the Byte Buddy webpage. As a bonus, Byte Buddy is already ready for Java 9 and gives a lot of features for free, for example generic meta data retention and a possibility to retain annotations on subclassed types and overridden methods. I have written a simple proof of concept here: https://github.com/raphw/hibernate-bb without having tested it - I did not implement the fast class providers as I have learned after a lot of benchmarking that those do not improve performance on Java 8+ VMs anymore. Using such fast-classing rather pollutes the code cache than bring any benefit. The only advantage with code generation in this field comes when avoiding boxing what is not the case. But of course, I can implement something in Byte Buddy to apply such a fast-class mechanism. Let me know what you think. I am more then happy to help you with implementing such a provider. Other frameworks such as Mockito already use Byte Buddy on a large scale and made good experiences with it. Best regards, Rafael