Register for reflection the hierarchy of the entity in MongoDB with Panache

[loicmathieu]

Fixes #13301

I register for reflection the hierarchy of the entity and not juste the entity itself.

I didn't add any test yet as I wanted to have some feedback on the usage of the ReflectiveHierarchyBuildItem as it's the first time I used it. Is my usage correct ?
I notice that Hibernate ORM didn't use it and instead use a rather complex way of climbing the hierarchy of types: https://github.com/quarkusio/quarkus/blob/master/extensions/hibernate-orm/deployment/src/main/java/io/quarkus/hibernate/orm/deployment/JpaJandexScavenger.java#L228

[quarkus-bot]

Thanks for your pull request!

The title of your pull request does not follow our editorial rules. Could you have a look?

• title should preferably start with an uppercase character (if it makes sense!)

This message is automatically generated by a bot.

[loicmathieu]

@geoand can I have your advice on this one ?

[geoand]

That JPAScavenger thing is pretty old... ReflectiveHierarchyBuildItem is definitely the way to go. Just make sure you aren't registering too much for reflection depending on your use case.

What is the exact problem you are trying to solve?

[loicmathieu]

The issue is exaplained in #13301
Today we register the mongo discovered entity class (from the parameter type of the repository), but if this class extends a base class we didn't register the base class as we didn't climb up the hierarchy of classes.
So basically I wanted to register the hierarchy of the class instead of the class.

[geoand]

ReflectiveHierarchyBuildItem sounds perfectly reasonable in this case

[loicmathieu]

@geoand I added a test, this PR is ready to go.

[geoand]

LGTM!