Dmitry Popov ( https://hibernate.atlassian.net/secure/ViewProfile.jspa?accountId=557058%... ) *commented* on HHH-15806 ( https://hibernate.atlassian.net/browse/HHH-15806?atlOrigin=eyJpIjoiNmFhND... ) Re: Envers and Hibernate 6 and PostgreSQLEnumType ( https://hibernate.atlassian.net/browse/HHH-15806?atlOrigin=eyJpIjoiNmFhND... ) Please fix it, it breaks the migration to Spring Boot 3 + Hibernate 6.1.5, if you have an application with PSQL database, audited entities, and enum fields saved as PSQL enum data type! The issue is — the 2nd run on PostgreSQLEnumType does NOT pass this property in the parameters: org.hibernate.type.ParameterType.xproperty -> {JavaXProperty@14294} "country" Which results in a Spring Boot application failing like this: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'entityManagerFactory' defined in class path resource [org/springframework/boot/autoconfigure/orm/jpa/HibernateJpaConfiguration.class]: Cannot read the array length because "<local3>" is null at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1751) ~[spring-beans-6.0.2.jar:6.0.2] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:599) ~[spring-beans-6.0.2.jar:6.0.2] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:521) ~[spring-beans-6.0.2.jar:6.0.2] at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:326) ~[spring-beans-6.0.2.jar:6.0.2] at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234) ~[spring-beans-6.0.2.jar:6.0.2] at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:324) ~[spring-beans-6.0.2.jar:6.0.2] at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:200) ~[spring-beans-6.0.2.jar:6.0.2] at org.springframework.context.support.AbstractApplicationContext.getBean(AbstractApplicationContext.java:1130) ~[spring-context-6.0.2.jar:6.0.2] at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:905) ~[spring-context-6.0.2.jar:6.0.2] at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:584) ~[spring-context-6.0.2.jar:6.0.2] at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:146) ~[spring-boot-3.0.0.jar:3.0.0] at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:730) ~[spring-boot-3.0.0.jar:3.0.0] at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:432) ~[spring-boot-3.0.0.jar:3.0.0] at org.springframework.boot.SpringApplication.run(SpringApplication.java:308) ~[spring-boot-3.0.0.jar:3.0.0] at org.springframework.boot.SpringApplication.run(SpringApplication.java:1302) ~[spring-boot-3.0.0.jar:3.0.0] at org.springframework.boot.SpringApplication.run(SpringApplication.java:1291) ~[spring-boot-3.0.0.jar:3.0.0] at com.myapp.adapter.cli.SpringBootInitializer.main(SpringBootInitializer.java:19) ~[classes/:?] at jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:104) ~[?:?] at java.lang.reflect.Method.invoke(Method.java:578) ~[?:?] at org.springframework.boot.devtools.restart.RestartLauncher.run(RestartLauncher.java:49) ~[spring-boot-devtools-3.0.0.jar:3.0.0] Caused by: java.lang.NullPointerException: Cannot read the array length because "<local3>" is null at org.hibernate.type.EnumType.getAnnotation(EnumType.java:238) ~[hibernate-core-6.1.5.Final.jar:6.1.5.Final] at org.hibernate.type.EnumType.getEnumType(EnumType.java:229) ~[hibernate-core-6.1.5.Final.jar:6.1.5.Final] at org.hibernate.type.EnumType.setParameterValues(EnumType.java:137) ~[hibernate-core-6.1.5.Final.jar:6.1.5.Final] at com.vladmihalcea.hibernate.type.basic.PostgreSQLEnumType.setParameterValues(PostgreSQLEnumType.java:46) ~[hibernate-types-60-2.21.1.jar:?] at org.hibernate.mapping.MappingHelper.injectParameters(MappingHelper.java:70) ~[hibernate-core-6.1.5.Final.jar:6.1.5.Final] at org.hibernate.boot.model.TypeDefinition.createResolution(TypeDefinition.java:161) ~[hibernate-core-6.1.5.Final.jar:6.1.5.Final] at org.hibernate.boot.model.TypeDefinition.createLocalResolution(TypeDefinition.java:299) ~[hibernate-core-6.1.5.Final.jar:6.1.5.Final] at org.hibernate.mapping.BasicValue.interpretExplicitlyNamedType(BasicValue.java:681) ~[hibernate-core-6.1.5.Final.jar:6.1.5.Final] at org.hibernate.mapping.BasicValue.buildResolution(BasicValue.java:353) ~[hibernate-core-6.1.5.Final.jar:6.1.5.Final] at org.hibernate.mapping.BasicValue.resolve(BasicValue.java:315) ~[hibernate-core-6.1.5.Final.jar:6.1.5.Final] at org.hibernate.mapping.BasicValue.resolve(BasicValue.java:305) ~[hibernate-core-6.1.5.Final.jar:6.1.5.Final] at org.hibernate.boot.internal.InFlightMetadataCollectorImpl.lambda$processValueResolvers$4(InFlightMetadataCollectorImpl.java:1767) ~[hibernate-core-6.1.5.Final.jar:6.1.5.Final] at java.util.ArrayList.removeIf(ArrayList.java:1682) ~[?:?] at java.util.ArrayList.removeIf(ArrayList.java:1660) ~[?:?] at org.hibernate.boot.internal.InFlightMetadataCollectorImpl.processValueResolvers(InFlightMetadataCollectorImpl.java:1766) ~[hibernate-core-6.1.5.Final.jar:6.1.5.Final] at org.hibernate.boot.internal.InFlightMetadataCollectorImpl.processSecondPasses(InFlightMetadataCollectorImpl.java:1752) ~[hibernate-core-6.1.5.Final.jar:6.1.5.Final] at org.hibernate.boot.internal.InFlightMetadataCollectorImpl.buildMetadataInstance(InFlightMetadataCollectorImpl.java:2292) ~[hibernate-core-6.1.5.Final.jar:6.1.5.Final] at org.hibernate.boot.model.process.spi.MetadataBuildingProcess.complete(MetadataBuildingProcess.java:349) ~[hibernate-core-6.1.5.Final.jar:6.1.5.Final] at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl.metadata(EntityManagerFactoryBuilderImpl.java:1350) ~[hibernate-core-6.1.5.Final.jar:6.1.5.Final] at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl.build(EntityManagerFactoryBuilderImpl.java:1421) ~[hibernate-core-6.1.5.Final.jar:6.1.5.Final] at org.springframework.orm.jpa.vendor.SpringHibernateJpaPersistenceProvider.createContainerEntityManagerFactory(SpringHibernateJpaPersistenceProvider.java:66) ~[spring-orm-6.0.2.jar:6.0.2] at org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean.createNativeEntityManagerFactory(LocalContainerEntityManagerFactoryBean.java:376) ~[spring-orm-6.0.2.jar:6.0.2] at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.buildNativeEntityManagerFactory(AbstractEntityManagerFactoryBean.java:409) ~[spring-orm-6.0.2.jar:6.0.2] at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.afterPropertiesSet(AbstractEntityManagerFactoryBean.java:396) ~[spring-orm-6.0.2.jar:6.0.2] at org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean.afterPropertiesSet(LocalContainerEntityManagerFactoryBean.java:352) ~[spring-orm-6.0.2.jar:6.0.2] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1797) ~[spring-beans-6.0.2.jar:6.0.2] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1747) ~[spring-beans-6.0.2.jar:6.0.2] ... 19 more The related issue in the library providing the PostgreSQLEnumType is here — https://github.com/vladmihalcea/hypersistence-utils/issues/519 ( https://github.com/vladmihalcea/hypersistence-utils/issues/519 ). 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