Refine and optimize JPA/Hibernate support

[sdeleuze]

• Check if hibernate-graalvm is usable : my guess is that it is not because static config is not efficient enough in term of footprint but worth to check and we could maybe use its config to improve our compatibility
• Configure hibernate.bytecode.provider=none automatically
• Document usage of hibernate-enhance-maven-plugin
• Document limitations
• Fix martin-lizner repro

[martin-lizner]

Upvoting this. Im unable to compile https://github.com/Evolveum/midpoint project due to hibernate error. Using 0.8.0 spring-graalvm and java11-20.2.0/bin/native-image on Linux. Thanks.

could not find target method: private void org.hibernate.jpa.boot.internal.Target_EntityManagerFactoryBuilderImpl.processHibernateConfigXmlResources(org.hibernate.boot.registry.StandardServiceRegistryBuilder,org.hibernate.jpa.boot.internal.Target_EntityManagerFactoryBuilderImpl$Target_MergedSettings,java.lang.String)
at com.oracle.svm.core.util.UserError.abort(UserError.java:68)
at com.oracle.svm.hosted.substitute.AnnotationSubstitutionProcessor.findOriginalMethod(AnnotationSubstitutionProcessor.java:637)
at com.oracle.svm.hosted.substitute.AnnotationSubstitutionProcessor.handleMethodInAliasClass(AnnotationSubstitutionProcessor.java:330)

[sdeleuze]

@martin-lizner Could you please provide a minimal repro for the issue you mentioned?

[sdeleuze]

As discussed with @schauder I will focus on reviewing the substitutions and him on the hints.

[sdeleuze]

@martin-lizner My recent commit should fix your issue.