Vlad Mihalcea ( https://hibernate.atlassian.net/secure/ViewProfile.jspa?accountId=557058%... ) *updated* an issue Hibernate ORM ( https://hibernate.atlassian.net/browse/HHH?atlOrigin=eyJpIjoiMjJmNTVhNDg5... ) / Bug ( https://hibernate.atlassian.net/browse/HHH-14000?atlOrigin=eyJpIjoiMjJmNT... ) HHH-14000 ( https://hibernate.atlassian.net/browse/HHH-14000?atlOrigin=eyJpIjoiMjJmNT... ) Allow a custom Type that was registered via Type Contributors to be resolved by its class, not just its name ( https://hibernate.atlassian.net/browse/HHH-14000?atlOrigin=eyJpIjoiMjJmNT... ) Change By: Vlad Mihalcea ( https://hibernate.atlassian.net/secure/ViewProfile.jspa?accountId=557058%... ) Considering we have a custom Type we register like this: {noformat}@Override protected void addConfigOptions(Map options) { options.put( EntityManagerFactoryBuilderImpl.METADATA_BUILDER_CONTRIBUTOR, (MetadataBuilderContributor) metadataBuilder -> metadataBuilder.applyTypes( (typeContributions, serviceRegistry) -> { typeContributions.contributeType( ArrayType.INSTANCE ); } )); }{noformat} When calling the following query: {code:java} List<CorporateUserDTO> emails = entityManager.createNativeQuery( "select " + " u.userName as userName, " + " u.emailAddresses as emailAddresses " + "from CorporateUser u " + "where u.userName = :name", "CorporateUserDTO" ) .setParameter( "name", "Vlad" ) .getResultList(); {code} Where the emailAddresses uses a custom Typ and the {{CorporateUserDTO}} result set mapping is mapped like this: {code:java} @SqlResultSetMapping( name = "CorporateUserDTO", classes = @ConstructorResult( targetClass = CorporateUserDTO.class, columns = { @ColumnResult(name = "userName"), @ColumnResult(name = "emailAddresses", type = Array.class), } ) ) {code} The following exception is thrown: {noformat} java javax. lang persistence. IllegalArgumentException PersistenceException : Could not locate appropriate constructor on class : org.hibernate. test. type. contributor.ArrayTypeContributorTest$CorporateUserDTO SerializationException: could not deserialize at org.hibernate. loader internal. custom ExceptionConverterImpl. ConstructorResultColumnProcessor.resolveConstructor convert ( ConstructorResultColumnProcessor ExceptionConverterImpl.java: 92 154 ) at org.hibernate. loader query. custom internal. ConstructorResultColumnProcessor AbstractProducedQuery. performDiscovery list ( ConstructorResultColumnProcessor AbstractProducedQuery.java: 45 1542 ) at org.hibernate. loader query. custom Query. CustomLoader.autoDiscoverTypes getResultList ( CustomLoader Query.java: 494 165 ) at org.hibernate. loader test. Loader type. processResultSet contributor.ArrayTypeContributorTest.lambda$testNativeSQL$5 ( Loader ArrayTypeContributorTest.java: 2338 99 ) {noformat} It looks like That’s because the Constructor {{Array}}property is resolved using the Hibernate Type by {{SerializableType}} instead of the actual Java Type {{ArrayType}}. ( https://hibernate.atlassian.net/browse/HHH-14000#add-comment?atlOrigin=ey... ) Add Comment ( https://hibernate.atlassian.net/browse/HHH-14000#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#100125- sha1:927dd36 )