AOT Support?

[korkutkose]

As i understood that, currently, neither programatically nor at repository level https://github.com/oracle/graalvm-reachability-metadata JaVers supporting spring-native yet. Is there any plan for this?
It's cumbersome to extract necessary reflections via tracability agent to be honest since we need to keep hitting necessary endpoints programatically to generate reflection configs.

[bartoszwalacik]

sorry, but I have zero knowledge about GraalVM, btw this issue is unclear for me. Is it a question? Is it a feature request? If so, please follow the issue template

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[goafabric]

@bartoszwalacik @korkutkose
Maybe i can shed some light here, as i would have been also interested in native support.
For anyone who stumbles upon this issue.

In a nutshell, AOT/Native support, gives you the option to compile native machine code images, from pure java.
While this has several benefits, the downside is that you need to register so called "hints" for everything the compiler know needs ahead of time, like reflection, proxies etc.

That works good if there will be only a few of these hints.
However, i tried to get the ball running with javers .. and unfortunately as amazingly simple javers works,
i ended up with 100+ reflection hints, it's still not working because of a hibernate problem .. at least it know survives the general bootstrap phase.

I will attach the spring boot Configuration for the sake of clearness.

But it think with so much reflection inside javers, aot is not a good fit for now.
At least it helped me to get a good inspiration how to build my own auditing, based an AOP with Spring data, thx 4 that

[goafabric]

Native hint config
JaversNativeConfiguration.java.zip

[bartoszwalacik]

@goafabric thanks for explanation, btw if you guys are eager to contribute this kind of support to javers -- let me know

[goafabric]

@goafabric thanks for explanation, btw if you guys are eager to contribute this kind of support to javers -- let me know

we will and thx .. but usually setting and also maintaining 100+ hints does not make a lot of sense

[goafabric]

so for everyone stumbling here i can provide the file below it lakes make everything bootstrap and write
for current boot 3.3.5 and javers 7.6.3

for explanation, there is no way around using reflection (during build) here, as a lot of the classes are package protected
and it needs a fix for JpaHibernateConnectionProvider, as the injection of @PersistenceContext fails here with a null Pointer

@bartoszwalacik
if i would create a PR , would this get through ?
The NativeHints themself could go here, i did something similar with Resilience4j a while ago
https://github.com/javers/javers/tree/master/javers-spring-boot-starter-sql/src/main/java/org/javers/spring/boot/sql

For the ConnectionProvider i am unsure what would be the best fix (for now)

JaversNativeConfiguration.java.zip

[bartoszwalacik]

sure @goafabric , I will review it

[bartoszwalacik]

PR with AOT support
#1421

[goafabric]

big thx 4 merging