With JPA 2.2 it is finally possible to do injection into AttributeConverters. The standard describes that when using CDI that injection. It would be nice if when using Spring injection would be supported as well.
JPA 2.1 introduced injecting in EntityListeners with CDI would be nice if injection would work for that as well.
Added bonus would be if this would work with both JPA and plain Hibernate.
Indeed, #20852 covers this for Hibernate already. Since we need a callback from the persistence provider here, we can only really do this in conjunction with specific SPI contracts... such as the one that we got in Hibernate 5.3. Otherwise, the best you can is do use @Configurable through AspectJ weaving.
I'll repurpose this ticket to the main missing part: JPA 2.2 injection support for EclipseLink.
We use Eclipselink. It would be nice to have this. I wanted to use the converters for transparent encryption/decryption of some of the fields in entities but to do that I need to have access to some Spring beans.