Khurelkhuyag M. ( https://hibernate.atlassian.net/secure/ViewProfile.jspa?accountId=557058%... ) *created* an issue Hibernate ORM ( https://hibernate.atlassian.net/browse/HHH?atlOrigin=eyJpIjoiNDM1OTUwYTlh... ) / Bug ( https://hibernate.atlassian.net/browse/HHH-16121?atlOrigin=eyJpIjoiNDM1OT... ) HHH-16121 ( https://hibernate.atlassian.net/browse/HHH-16121?atlOrigin=eyJpIjoiNDM1OT... ) @Embedded property not working with hibernate-enhance-maven-plugin ( https://hibernate.atlassian.net/browse/HHH-16121?atlOrigin=eyJpIjoiNDM1OT... ) Issue Type: Bug Affects Versions: 6.1.6 Assignee: Unassigned Attachments: proof-hibernate-embedded-not-working.zip Created: 31/Jan/2023 00:18 AM Environment: OpenJDK 17 x64 Ubuntu Linux Maven 3.8.6 Labels: core Priority: Major Reporter: Khurelkhuyag M. ( https://hibernate.atlassian.net/secure/ViewProfile.jspa?accountId=557058%... ) This is my example project’s model classes. With this, If I try to load the Product with the declared fetch graph it fails. The minimal sample project is attached. Without the maven enhance plugin. it works. @Embeddable public class Picture { private String name; private int width; private int height; // constructors, getters, and setters ommited } @Entity @Table(name = "productCategory" ) public class ProductCategory { @ManyToOne(fetch = FetchType.LAZY) private ProductCategory parent; @Id private Long id; private String name; @Embedded private Picture picture; @OneToMany(mappedBy = "parent" ) private List<ProductCategory> children; // constructors, getters, and setters ommited } @Entity @Table(name = "product" ) @NamedEntityGraph( name = "Product.withAll" , attributeNodes = { @NamedAttributeNode(value = "category" ), } ) public class Product { @ManyToOne(fetch = FetchType.LAZY) private ProductCategory category; @Id private Long id; private String name; @Embedded private Picture picture; // constructors, getters, and setters ommited } Stack trace: Exception in thread "main" jakarta.persistence.PersistenceException: Converting `org.hibernate.InstantiationException` to JPA `PersistenceException` : Could not instantiate entity: : com.example.hibernateembedded.Picture at org.hibernate.internal.ExceptionConverterImpl.convert(ExceptionConverterImpl.java:165) at org.hibernate.query.spi.AbstractSelectionQuery.list(AbstractSelectionQuery.java:374) at org.hibernate.query.sqm.internal.QuerySqmImpl.list(QuerySqmImpl.java:1073) at org.hibernate.query.spi.AbstractSelectionQuery.getSingleResult(AbstractSelectionQuery.java:457) at org.hibernate.query.sqm.internal.QuerySqmImpl.getSingleResult(QuerySqmImpl.java:1103) at com.example.hibernateembedded.Main.fetch(Main.java:20) at com.example.hibernateembedded.Main.main(Main.java:41) Caused by: org.hibernate.InstantiationException: Could not instantiate entity: : com.example.hibernateembedded.Picture at org.hibernate.metamodel.internal.EmbeddableInstantiatorPojoStandard.instantiate(EmbeddableInstantiatorPojoStandard.java:84) at org.hibernate.sql.results.graph.embeddable.AbstractEmbeddableInitializer.createCompositeInstance(AbstractEmbeddableInitializer.java:333) at org.hibernate.sql.results.graph.embeddable.AbstractEmbeddableInitializer.prepareCompositeInstance(AbstractEmbeddableInitializer.java:247) at org.hibernate.sql.results.graph.embeddable.AbstractEmbeddableInitializer.initializeInstance(AbstractEmbeddableInitializer.java:194) at org.hibernate.sql.results.internal.StandardRowReader.coordinateInitializers(StandardRowReader.java:152) at org.hibernate.sql.results.internal.StandardRowReader.readRow(StandardRowReader.java:97) at org.hibernate.sql.results.spi.ListResultsConsumer.consume(ListResultsConsumer.java:198) at org.hibernate.sql.results.spi.ListResultsConsumer.consume(ListResultsConsumer.java:33) at org.hibernate.sql.exec.internal.JdbcSelectExecutorStandardImpl.doExecuteQuery(JdbcSelectExecutorStandardImpl.java:443) 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:113) at org.hibernate.query.sqm.internal.ConcreteSqmSelectQueryPlan.withCacheableSqmInterpretation(ConcreteSqmSelectQueryPlan.java:335) at org.hibernate.query.sqm.internal.ConcreteSqmSelectQueryPlan.performList(ConcreteSqmSelectQueryPlan.java:276) at org.hibernate.query.sqm.internal.QuerySqmImpl.doList(QuerySqmImpl.java:571) at org.hibernate.query.spi.AbstractSelectionQuery.list(AbstractSelectionQuery.java:363) ... 5 more Caused by: org.hibernate.PropertyAccessException: Could not set value of type [org.hibernate.bytecode.enhance.spi.LazyPropertyInitializer$1] : `com.example.hibernateembedded.Picture.height` (setter) at org.hibernate.property.access.spi.SetterFieldImpl.set(SetterFieldImpl.java:81) at org.hibernate.metamodel.mapping.internal.AbstractEmbeddableMapping.lambda$setValues$1(AbstractEmbeddableMapping.java:106) at org.hibernate.metamodel.mapping.internal.EmbeddableMappingTypeImpl.forEachAttributeMapping(EmbeddableMappingTypeImpl.java:731) at org.hibernate.metamodel.mapping.internal.AbstractEmbeddableMapping.setValues(AbstractEmbeddableMapping.java:105) at org.hibernate.metamodel.internal.EmbeddableInstantiatorPojoStandard.instantiate(EmbeddableInstantiatorPojoStandard.java:78) ... 21 more Caused by: java.lang.IllegalArgumentException: Can not set int field com.example.hibernateembedded.Picture.height to org.hibernate.bytecode.enhance.spi.LazyPropertyInitializer$1 at java.base/jdk.internal.reflect.UnsafeFieldAccessorImpl.throwSetIllegalArgumentException(UnsafeFieldAccessorImpl.java:167) at java.base/jdk.internal.reflect.UnsafeFieldAccessorImpl.throwSetIllegalArgumentException(UnsafeFieldAccessorImpl.java:171) at java.base/jdk.internal.reflect.UnsafeIntegerFieldAccessorImpl.set(UnsafeIntegerFieldAccessorImpl.java:98) at java.base/java.lang.reflect.Field.set(Field.java:799) at org.hibernate.property.access.spi.SetterFieldImpl.set(SetterFieldImpl.java:53) ... 25 more ( https://hibernate.atlassian.net/browse/HHH-16121#add-comment?atlOrigin=ey... ) Add Comment ( https://hibernate.atlassian.net/browse/HHH-16121#add-comment?atlOrigin=ey... ) Get Jira notifications on your phone! 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