[hibernate-issues] [JIRA] (HHH-15529) Cannot override non-identifier propety from @MappedSuperclass and make it identifier in subclass

JohannesMartin ( https://hibernate.atlassian.net/secure/ViewProfile.jspa?accountId=557058%... ) *created* an issue Hibernate ORM ( https://hibernate.atlassian.net/browse/HHH?atlOrigin=eyJpIjoiNDQ2YjJlYjg3... ) / Bug ( https://hibernate.atlassian.net/browse/HHH-15529?atlOrigin=eyJpIjoiNDQ2Yj... ) HHH-15529 ( https://hibernate.atlassian.net/browse/HHH-15529?atlOrigin=eyJpIjoiNDQ2Yj... ) Cannot override non-identifier propety from @MappedSuperclass and make it identifier in subclass ( https://hibernate.atlassian.net/browse/HHH-15529?atlOrigin=eyJpIjoiNDQ2Yj... ) Issue Type: Bug Affects Versions: 5.0.9, 5.6.11, 5.3.28 Assignee: Unassigned Attachments: HHH-xxxxx-MappedSuperclassAndId.zip Components: metamodel Created: 19/Sep/2022 08:59 AM Environment: hibernate-entitymanager (versions see about) OpenJDK 8 Ubuntu 20.04 MySQL Priority: Major Reporter: JohannesMartin ( https://hibernate.atlassian.net/secure/ViewProfile.jspa?accountId=557058%... ) I’ve got a @MappedSuperClass A defining field testA as non-identifier. Class B extends Class A, defining additional field testB. Class B annotates both field testA and field testB with @Id. At runtime, hibernate 5.6.11 complains: org.hibernate.MappingException: You cannot override the [testA] non-identifier property from the [sample.entities.A] base class or @MappedSuperclass and make it an identifier in the [sample.entities.B] subclass! Earlier versions just silently ignore the @Id annotation on testA. If I annotate testA as @Id in the MappedSuperclass, the code runs fine, but this violates JPA spec (JPA 2.1 http://download.oracle.com/otndocs/jcp/persistence-2_1-fr-eval-spec ( http://download.oracle.com/otndocs/jcp/persistence-2_1-fr-eval-spec ) - Chapter 2.4): Why does hibernate handle things like this? Is there a way around it. ( https://hibernate.atlassian.net/browse/HHH-15529#add-comment?atlOrigin=ey... ) Add Comment ( https://hibernate.atlassian.net/browse/HHH-15529#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#100207- sha1:7afd384 )