EntityManager.find method does not generate SubselectFetches

Hi , thank you for reporting the issue and contributing to Hibernate! I left a few comments on your PR, but I wanted to also discuss the point you raise in the issue here.

I understand where you’re coming from since you’re seeing a difference in behavior when comparing find with join-fetching in an HQL queries, though these operations have very different semantics intrinsically. I am not sure that the org.hibernate.annotations.Fetch annotation was designed with single-load operations (i.e. find) in mind, that might be the reason why we see the different behavior in the first place.

Now, I’m not saying we could not implement it, and your approach looks fairly straightforward apart from a few implementation details we can clean up. But if we choose to go that route, this will introduce a change in how associated collections are fetched when using find that goes against the expectation Hibernate created until now (a quick test with Hibernate 5 shows it was always ignoring the SUBSELECT fetching). For this reason, I’ve changed your issue type to an improvement request.