[hibernate-issues] [JIRA] (HHH-16758) Hibernate throws error when using @ElementCollection

Brent Watson ( https://hibernate.atlassian.net/secure/ViewProfile.jspa?accountId=712020%... ) *created* an issue Hibernate ORM ( https://hibernate.atlassian.net/browse/HHH?atlOrigin=eyJpIjoiYTE0MjVkMzZm... ) / Bug ( https://hibernate.atlassian.net/browse/HHH-16758?atlOrigin=eyJpIjoiYTE0Mj... ) HHH-16758 ( https://hibernate.atlassian.net/browse/HHH-16758?atlOrigin=eyJpIjoiYTE0Mj... ) Hibernate throws error when using @ElementCollection ( https://hibernate.atlassian.net/browse/HHH-16758?atlOrigin=eyJpIjoiYTE0Mj... ) Issue Type: Bug Affects Versions: 6.2.4 Assignee: Unassigned Components: hibernate-entitymanager Created: 06/Jun/2023 07:00 AM Environment: Hibernate 6.0.0, Spring 3, Java 17, Kotlin Labels: breaking-change Priority: Critical Reporter: Brent Watson ( https://hibernate.atlassian.net/secure/ViewProfile.jspa?accountId=712020%... ) When using @ElementCollection with Set = SetOf() I get org.hibernate.NotYetImplementedFor6Exception: Only support for basic-valued, entity-valued and embedded model-parts have been implemented : userNames [PluralAttribute] This worked before upgrading to hibernate 6 @SqlResultSetMappings( SqlResultSetMapping( name = "Mapping.User", entities = [ EntityResult( entityClass = User::class, fields = [ FieldResult(name = "id", column = "id"), FieldResult(name = "userNames", column = "user_names"), ] ) ], ), SqlResultSetMapping( name = "Mapping.User.count", columns = [ColumnResult(name = "rowCount")] ) ) @Entity @Table(name = "users") data class User( @Id @GeneratedValue(generator = "UUID") @GenericGenerator( name = "UUID", strategy = "org.hibernate.id.UUIDGenerator" ) @Column(name = "id") var id: UUID = UUID.randomUUID(),@ElementCollection(fetch = FetchType.EAGER) @CollectionTable( name = "users_names", joinColumns = [JoinColumn(name = "user_id", referencedColumnName = "id")] ) @Column(name = "user_names") var userNames: Set<String> = setOf(), ) ( https://hibernate.atlassian.net/browse/HHH-16758#add-comment?atlOrigin=ey... ) Add Comment ( https://hibernate.atlassian.net/browse/HHH-16758#add-comment?atlOrigin=ey... ) Get Jira notifications on your phone! Download the Jira Cloud app for Android ( https://play.google.com/store/apps/details?id=com.atlassian.android.jira.... ) or iOS ( https://itunes.apple.com/app/apple-store/id1006972087?pt=696495&ct=Em... ) This message was sent by Atlassian Jira (v1001.0.0-SNAPSHOT#100225- sha1:3b7cdab )