JPA App working on JVM fails with "org.hibernate.AnnotationException" when running native

[tmohme]

Expected Behavior

The application should run native when built with "./gradlew clean dockerBuildNative" the same way as it runs when built with "./gradlew dockerBuild".

Actual Behaviour

When running the native application, I get a org.hibernate.AnnotationException: com.example.DemoClassId has no persistent id property: com.example.DemoClass.id

Steps To Reproduce

clone https://github.com/tmohme/mn-defect-demo, then

1. run ./gradlew dockerBuild
2. run 'docker run demo:latest' => should work
3. run ./gradlew dockerBuildNative
4. run 'docker run demo:latest' => fails with org.hibernate.AnnotationException: com.example.DemoClassId has no persistent id property: com.example.DemoClass.id

Environment Information

• macOS 12.5, Intel CPU
• OpenJDK 64-Bit Server VM Zulu11.56+19-CA (build 11.0.15+10-LTS, mixed mode)

Example Application

https://github.com/tmohme/mn-defect-demo

Version

3.6.0

[yawkat]

libraries like hibernate won't just work out-of-the-box with native image. they need some reflection config.

from the error, it may be enough to simply add @ReflectiveAccess to the bean in question.

[tmohme]

Thank you for your suggestion. I'm aware that Hibernate makes heavy use of reflection. Nevertheless I was under the assumption, that Micronaut already takes care of this . . . because Micronaut has dedicated support for Hibernate and - apart from @EmbeddedId - everything works fine in the native app.

Anyway, adding @ReflectiveAccess to the DemoClassId class was enough to solve the problem for me.

It looks like Micronaut somehow manages this (letting the Annotation survive native-compile) automatically for other JPA Annotations. Maybe it would be worthwhile to extend this support to include @EmbeddedId.