[4.x] Sample MP database app fails to compile w/JDK 22 (Native Image)

[lprimak]

Continuation of #8096
JDK 21 works, but JDK 22 doesn't
Great progress, but not quite there (yet)

Environment Details

• Helidon Version: 4.0.10
• Helidon MP
• JDK version: 22.0.1-GraalCE
• OS: Mac
• Docker version (if applicable): N/A

---

Steps to reproduce

• Generate Hibernate-based MP sample app via Helidon CLI
• Compile into native image
• See errors happen

Problem Description

Graal compilaion fails:
See #8096 (comment)

[lprimak]

Tested with Helidon 4.0.10 and it still doesn't work

[tomas-langer]

Hello, Helidon 4.x supports GraalVM for Java 21 only.
For each major version of Helidon, we choose one version of GraalVM to support for native image (there are no restriction for hotspot mode, of course).

The reason is that with each newer version of GraalVM, there are usually some changes we need to do to our code base, and we currently cannot support multiple versions in parallel.

Although Helidon 4.x supports Java 21+ (i.e. version 21 or higher), we do not claim this support for GraalVM native image, where it must be GraalVM for Java 21 specifically

[tomas-langer]

List of prerequisites:
https://helidon.io/docs/v4/about/prerequisites

And the mention of GraalVM version (just in a guide, we need to improve this):
https://helidon.io/docs/v4/mp/guides/graalnative

[lprimak]

Understood. However, it would be nice to have some sort of a workaround to get it to work.
Also, since there was an issue about running with GraalVM 23-ea I thought that 22 would for sure work :)