I'm using: - Spring Boot 3.2.0 - Java 21

I'm trying to compile native image, and when I do so, I get this error:

org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'entityManagerFactory' defined in class path resource [org/springframework/boot/autoconfigure/orm
/jpa/HibernateJpaConfiguration.class]: [PersistenceUnit: default] Unable to build Hibernate SessionFactory; nested exception is org.hibernate.HibernateException: Using the ReflectionOptimizer is not possible when the configured BytecodeProvider is 'none'. Use a different BytecodeProvider
        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1775)
        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:601)
        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:523)
        at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:325)
        at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234)
        at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:323)
        at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:199)
        at org.springframework.context.support.AbstractApplicationContext.getBean(AbstractApplicationContext.java:1173)
        at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:936)
        at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:616)
        at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:146)
        at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:753)
        at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:455)
        at org.springframework.boot.SpringApplication.run(SpringApplication.java:323)
        at org.springframework.boot.SpringApplication.run(SpringApplication.java:1342)
        at org.springframework.boot.SpringApplication.run(SpringApplication.java:1331)
        at net.croz.hrokb2b.HrokB2bApplication.main(HrokB2bApplication.java:11)
Caused by: jakarta.persistence.PersistenceException: [PersistenceUnit: default] Unable to build Hibernate SessionFactory; nested exception is org.hibernate.HibernateException: Using the ReflectionOptimizer is not possible when the configured BytecodeProvider is 'none'. Use a different BytecodeProvider
        at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.buildNativeEntityManagerFactory(AbstractEntityManagerFactoryBean.java:421)
        at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.afterPropertiesSet(AbstractEntityManagerFactoryBean.java:396)
        at org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean.afterPropertiesSet(LocalContainerEntityManagerFactoryBean.java:352)
        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1822)
        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1771)
        ... 16 common frames omitted
Caused by: org.hibernate.HibernateException: Using the ReflectionOptimizer is not possible when the configured BytecodeProvider is 'none'. Use a different BytecodeProvider
        at org.hibernate.bytecode.internal.none.BytecodeProviderImpl.getReflectionOptimizer(BytecodeProviderImpl.java:48)
        at org.hibernate.metamodel.internal.EntityRepresentationStrategyPojoStandard.resolveReflectionOptimizer(EntityRepresentationStrategyPojoStandard.java:289)
        at org.hibernate.metamodel.internal.EntityRepresentationStrategyPojoStandard.<init>(EntityRepresentationStrategyPojoStandard.java:160)
        at org.hibernate.metamodel.internal.ManagedTypeRepresentationResolverStandard.resolveStrategy(ManagedTypeRepresentationResolverStandard.java:62)
        at org.hibernate.persister.entity.AbstractEntityPersister.<init>(AbstractEntityPersister.java:519)
        at org.hibernate.persister.entity.SingleTableEntityPersister.<init>(SingleTableEntityPersister.java:135)
        at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62)
        at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:502)
        at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:486)
        at org.hibernate.persister.internal.PersisterFactoryImpl.createEntityPersister(PersisterFactoryImpl.java:92)
        at org.hibernate.persister.internal.PersisterFactoryImpl.createEntityPersister(PersisterFactoryImpl.java:75)
        at org.hibernate.metamodel.model.domain.internal.MappingMetamodelImpl.processBootEntities(MappingMetamodelImpl.java:243)
        at org.hibernate.metamodel.model.domain.internal.MappingMetamodelImpl.finishInitialization(MappingMetamodelImpl.java:181)
        at org.hibernate.internal.SessionFactoryImpl.initializeMappingModel(SessionFactoryImpl.java:323)
        at org.hibernate.internal.SessionFactoryImpl.<init>(SessionFactoryImpl.java:273)
        at org.hibernate.boot.internal.SessionFactoryBuilderImpl.build(SessionFactoryBuilderImpl.java:450)
        at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl.build(EntityManagerFactoryBuilderImpl.java:1507)
        at org.springframework.orm.jpa.vendor.SpringHibernateJpaPersistenceProvider.createContainerEntityManagerFactory(SpringHibernateJpaPersistenceProvider.java:75)
        at org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean.createNativeEntityManagerFactory(LocalContainerEntityManagerFactoryBean.java:376)
        at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.buildNativeEntityManagerFactory(AbstractEntityManagerFactoryBean.java:409)
        ... 20 common frames omitted

Comment From: wilkinsona

Hibernate appears to be misconfigured but we cannot tell why that is the case as you have not shared any information about how you're using it. If you would like us to spend some more time investigating, please spend some time providing a complete yet minimal sample that reproduces the problem. You can share it with us by pushing it to a separate repository on GitHub or by zipping it up and attaching it to this issue.

Comment From: spring-projects-issues

If you would like us to look at this issue, please provide the requested information. If the information is not provided within the next 7 days this issue will be closed.

Comment From: spring-projects-issues

Closing due to lack of requested feedback. If you would like us to look at this issue, please provide the requested information and we will re-open the issue.

Comment From: ahp-tams

This is no configuration problem. The property hibernate.bytecode.use_reflection_optimize was simply removed and is not checked any more, so that BytecodeProviderImpl.java throws an exception when asked for the reflection optimizer. I am currently suffering from this problem, too, it costs me 5 seconds startup time with 840 entity classes.

Comment From: wilkinsona

We have a smoke test for JPA in a native image that passes so we're as confident as we can be that this is, in fact, a configuration problem. If you have evidence to the contrary, please share it with us in the form a minimal sample that reproduces your problem and we'll happily take a look at it.

Comment From: ahp-tams

We have a smoke test for JPA in a native image...

Thank you for your answer. My project does not run in a native image, but on jvm. To reproduce you only have to set hibernate.bytecode.provider=none and start any small jpa project in the jvm. Maybe I am using the wrong configuration property to disable the reflection optimizer? I only know of hibernate.bytecode.use_reflection_optimizer=false, wich does not work any more. If there is another property to disable it, I would be happy, but I couldn't find one yet, even in the sourcecode. If the reflection optimizer isn't disabled, the BytecodeProviderImpl will surely throw that exception.

Comment From: wilkinsona

Then this issue isn't relevant as it's specifically about a HibernateException being thrown when compiling to a native image.

Hibernate's own properties are, largely, out of Spring Boot's control. If you're not sure which Hibernate properties to use to get Hibernate to behave as you require, asking the Hibernate community or maintainers is a better option.

Comment From: ahp-tams

Then this issue isn't relevant as it's specifically about a HibernateException being thrown when compiling to a native image.

Ok, I see, wrong ticket. I know, wich hibernate properties to use to disable the bytecode optimizer. But then, the jvm build isn't usable any more in spring boot, see https://github.com/spring-projects/spring-framework/issues/31051 if you wish. I will fork hibernate and modify it to my needs, thank you.