Yoann Rodière ( https://hibernate.atlassian.net/secure/ViewProfile.jspa?accountId=557058%... ) *created* an issue Hibernate Search ( https://hibernate.atlassian.net/browse/HSEARCH?atlOrigin=eyJpIjoiNTMzMDVi... ) / Bug ( https://hibernate.atlassian.net/browse/HSEARCH-4853?atlOrigin=eyJpIjoiNTM... ) HSEARCH-4853 ( https://hibernate.atlassian.net/browse/HSEARCH-4853?atlOrigin=eyJpIjoiNTM... ) On JDK 21-ea+21, projection constructor relying on cannical record constructor result in all-null records ( https://hibernate.atlassian.net/browse/HSEARCH-4853?atlOrigin=eyJpIjoiNTM... ) Issue Type: Bug Assignee: Yoann Rodière ( https://hibernate.atlassian.net/secure/ViewProfile.jspa?accountId=557058%... ) Components: mapper-pojo-base Created: 11/May/2023 05:08 AM Fix Versions: 6.2-backlog Priority: Major Reporter: Yoann Rodière ( https://hibernate.atlassian.net/secure/ViewProfile.jspa?accountId=557058%... ) It seems parameters of record canonical constructors are considired implicit ( Parameter#isImplicit returns true ) starting with JDK 21-ea+21, which causes this check ( https://github.com/hibernate/hibernate-search/blob/6c6a2c6f27b0087fdbd884... ) to incorrectly assume these constructor parameters are for the surrounding instance in nested classes, leading to all parameters being set to null when projecting. See also: https://ci.hibernate.org/job/hibernate-search/job/main/666/ 14:09:20,303 (main) DEBUG PojoSearchQueryElementRegistryBuilder:89 - HSEARCH700117: Constructor projection for type 'org.hibernate.search.integrationtest.mapper.pojo.mapping.definition.ProjectionConstructorRecordIT$2MyProjection': valueCreateHandle: MethodHandleValueCreateHandle[public org.hibernate.search.integrationtest.mapper.pojo.mapping.definition.ProjectionConstructorRecordIT$2MyProjection(java.lang.String,java.lang.Integer)] innerDefinitions: - <null projection> - <null projection> ( https://hibernate.atlassian.net/browse/HSEARCH-4853#add-comment?atlOrigin... ) Add Comment ( https://hibernate.atlassian.net/browse/HSEARCH-4853#add-comment?atlOrigin... ) 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- sha1:84d3b45 )