I cannot get hibernate to work, whatever I try, I get an exception like org.hibernate.UnknownEntityTypeException: Unable to locate persister: Relation. The hbm.xbm file is there, if I change the class name into a nonexistent name, this is noticed, so I guess it is not ignored, but that is as far as it goes. Now, the documentation looks a little rough at places (Section 2.1.7. Inheritance looks like WIP), so I wonder whether something was changed in Hibernate 5 without proper documentation that keeps me from getting this up and running. (Running WildFly)

Use the Hibernate 5.2 User Guide and forget about the docs prior to Hibernate 5.

Also, use annotations instead of the legacy HBM mappings.

Check also the Getting started guide too.

I expect deprecated constructs to work; note that the 'Getting started guide' also uses mappings files, without mentioning they are deprecated. The same holds for the deprecated org.hibernate.tutorial.annotations.Event annotations. Anyways, I appreciate your suggestion, I will work my way through the annotation example to figure out what goes wrong here.

Thanks!
Izak

They work. We use lots of examples using HBM mappings in our test cases, but that doesn't mean you should now start a project using the legacy mappings. I can ensure you that annotations are better supported than HBM, so keep that in mind too.



But it also uses annotations. Anyway, it's just a configuration issue that you need to fix.