Philippe Kernevez ( https://hibernate.atlassian.net/secure/ViewProfile.jspa?accountId=557058%... ) *created* an issue Hibernate ORM ( https://hibernate.atlassian.net/browse/HHH?atlOrigin=eyJpIjoiMmZlOGZmNGM4... ) / Bug ( https://hibernate.atlassian.net/browse/HHH-15481?atlOrigin=eyJpIjoiMmZlOG... ) HHH-15481 ( https://hibernate.atlassian.net/browse/HHH-15481?atlOrigin=eyJpIjoiMmZlOG... ) NaturalId and Lazy create a class cast Exception ( https://hibernate.atlassian.net/browse/HHH-15481?atlOrigin=eyJpIjoiMmZlOG... ) Issue Type: Bug Affects Versions: 6.1.1 Assignee: Unassigned Attachments: java.zip Components: hibernate-core Created: 05/Sep/2022 02:06 AM Environment: Hibernate 6.1.1 with JPA. The test code is also available here: https://gitlab.com/pkernevez/hibernate-questions/-/tree/create-test-for-h... ( https://gitlab.com/pkernevez/hibernate-questions/-/tree/create-test-for-h... ) Priority: Major Reporter: Philippe Kernevez ( https://hibernate.atlassian.net/secure/ViewProfile.jspa?accountId=557058%... ) I tried to create a test following the recommandation: https://github.com/hibernate/hibernate-test-case-templates/blob/main/orm/... ( https://github.com/hibernate/hibernate-test-case-templates/blob/main/orm/... ) But I didn’t succeed in, because I can’t find how to retrieve a Repository with your test class. This issue is relative to this post : https://discourse.hibernate.org/t/naturalid-hibernate-always-hit-the-db/6... ( https://discourse.hibernate.org/t/naturalid-hibernate-always-hit-the-db/6... ) When I try to retrieve my entites through the repository with {{findAllByIdIn(List<Long> ids); }}it throws an Error. I java.lang.ClassCastException: class org.hibernate.sql.results.graph.embeddable.internal.EmbeddableFetchInitializer cannot be cast to class org.hibernate.sql.results.graph.entity.AbstractEntityInitializer (org.hibernate.sql.results.graph.embeddable.internal.EmbeddableFetchInitializer and org.hibernate.sql.results.graph.entity.AbstractEntityInitializer are in unnamed module of loader 'app') at org.hibernate.sql.results.graph.entity.internal.EntityDelayedFetchInitializer.resolveInstance(EntityDelayedFetchInitializer.java:136) at org.hibernate.sql.results.internal.StandardRowReader.coordinateInitializers(StandardRowReader.java:148) at org.hibernate.sql.results.internal.StandardRowReader.readRow(StandardRowReader.java:98) at org.hibernate.sql.results.spi.ListResultsConsumer.consume(ListResultsConsumer.java:143) at org.hibernate.sql.results.spi.ListResultsConsumer.consume(ListResultsConsumer.java:32) at org.hibernate.sql.exec.internal.JdbcSelectExecutorStandardImpl.doExecuteQuery(JdbcSelectExecutorStandardImpl.java:437) at org.hibernate.sql.exec.internal.JdbcSelectExecutorStandardImpl.executeQuery(JdbcSelectExecutorStandardImpl.java:166) at org.hibernate.sql.exec.internal.JdbcSelectExecutorStandardImpl.list(JdbcSelectExecutorStandardImpl.java:91) at org.hibernate.sql.exec.spi.JdbcSelectExecutor.list(JdbcSelectExecutor.java:31) at org.hibernate.query.sqm.internal.ConcreteSqmSelectQueryPlan.lambda$new$0(ConcreteSqmSelectQueryPlan.java:102) at org.hibernate.query.sqm.internal.ConcreteSqmSelectQueryPlan.withCacheableSqmInterpretation(ConcreteSqmSelectQueryPlan.java:305) at org.hibernate.query.sqm.internal.ConcreteSqmSelectQueryPlan.performList(ConcreteSqmSelectQueryPlan.java:246) at org.hibernate.query.sqm.internal.QuerySqmImpl.doList(QuerySqmImpl.java:537) at org.hibernate.query.spi.AbstractSelectionQuery.list(AbstractSelectionQuery.java:363) at org.hibernate.query.sqm.internal.QuerySqmImpl.list(QuerySqmImpl.java:987) at org.hibernate.query.Query.getResultList(Query.java:94) at org.springframework.data.jpa.repository.query.JpaQueryExecution$CollectionExecution.doExecute(JpaQueryExecution.java:127) at org.springframework.data.jpa.repository.query.JpaQueryExecution.execute(JpaQueryExecution.java:90) at org.springframework.data.jpa.repository.query.AbstractJpaQuery.doExecute(AbstractJpaQuery.java:148) at org.springframework.data.jpa.repository.query.AbstractJpaQuery.execute(AbstractJpaQuery.java:136) at org.springframework.data.repository.core.support.RepositoryMethodInvoker.doInvoke(RepositoryMethodInvoker.java:137) at org.springframework.data.repository.core.support.RepositoryMethodInvoker.invoke(RepositoryMethodInvoker.java:121) at org.springframework.data.repository.core.support.QueryExecutorMethodInterceptor.doInvoke(QueryExecutorMethodInterceptor.java:156) at org.springframework.data.repository.core.support.QueryExecutorMethodInterceptor.invoke(QueryExecutorMethodInterceptor.java:135) at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:184) at org.springframework.data.projection.DefaultMethodInvokingMethodInterceptor.invoke(DefaultMethodInvokingMethodInterceptor.java:77) at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:184) at org.springframework.transaction.interceptor.TransactionInterceptor$1.proceedWithInvocation(TransactionInterceptor.java:123) at org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:388) at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:119) at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:184) at org.springframework.dao.support.PersistenceExceptionTranslationInterceptor.invoke(PersistenceExceptionTranslationInterceptor.java:137) at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:184) at org.springframework.data.jpa.repository.support.CrudMethodMetadataPostProcessor$CrudMethodMetadataPopulatingMethodInterceptor.invoke(CrudMethodMetadataPostProcessor.java:134) at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:184) at org.springframework.aop.interceptor.ExposeInvocationInterceptor.invoke(ExposeInvocationInterceptor.java:97) at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:184) at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:215) at jdk.proxy2/jdk.proxy2.$Proxy135.findAllByIdIn(Unknown Source) ( https://hibernate.atlassian.net/browse/HHH-15481#add-comment?atlOrigin=ey... ) Add Comment ( https://hibernate.atlassian.net/browse/HHH-15481#add-comment?atlOrigin=ey... ) Get Jira notifications on your phone! 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