Marco Belladelli ( https://hibernate.atlassian.net/secure/ViewProfile.jspa?accountId=637b480... ) *created* an issue Hibernate ORM ( https://hibernate.atlassian.net/browse/HHH?atlOrigin=eyJpIjoiZmI5MmU0ZDcx... ) / Bug ( https://hibernate.atlassian.net/browse/HHH-16014?atlOrigin=eyJpIjoiZmI5Mm... ) HHH-16014 ( https://hibernate.atlassian.net/browse/HHH-16014?atlOrigin=eyJpIjoiZmI5Mm... ) Querying property from treated path causes IllegalArgumentException: Already registered a copy ( https://hibernate.atlassian.net/browse/HHH-16014?atlOrigin=eyJpIjoiZmI5Mm... ) Issue Type: Bug Affects Versions: 6.1.6 Assignee: Marco Belladelli ( https://hibernate.atlassian.net/secure/ViewProfile.jspa?accountId=637b480... ) Components: query-criteria Created: 10/Jan/2023 07:41 AM Priority: Major Reporter: Marco Belladelli ( https://hibernate.atlassian.net/secure/ViewProfile.jspa?accountId=637b480... ) Querying a property of a Path created by the treat method causes an Exception to be thrown. Here’s an example of a Criteria Query that triggers the problem: Path<LocalTerm> asLocalTerm = cb.treat( root.get( "term" ), LocalTerm.class ); criteria.select( root ).where( cb.equal( asLocalTerm.get( "property" ), value ) ); And here’s the stack trace: java.lang.IllegalArgumentException: Already registered a copy: SqmEntityValuedSimplePath(treat(org.hibernate.orm.test.jpa.criteria.TreatTablePerClassTest$Linkage(27365580293082).term as org.hibernate.orm.test.jpa.criteria.TreatTablePerClassTest$LocalTerm).language) at org.hibernate.query.sqm.tree.SqmCopyContext$1.registerCopy(SqmCopyContext.java:33) at org.hibernate.query.sqm.tree.domain.SqmEntityValuedSimplePath.copy(SqmEntityValuedSimplePath.java:37) at org.hibernate.query.sqm.tree.domain.SqmEntityValuedSimplePath.copy(SqmEntityValuedSimplePath.java:21) at org.hibernate.query.sqm.tree.predicate.SqmComparisonPredicate.copy(SqmComparisonPredicate.java:69) at org.hibernate.query.sqm.tree.predicate.SqmComparisonPredicate.copy(SqmComparisonPredicate.java:20) at org.hibernate.query.sqm.tree.predicate.SqmWhereClause.copy(SqmWhereClause.java:33) at org.hibernate.query.sqm.tree.select.SqmQuerySpec.copy(SqmQuerySpec.java:104) at org.hibernate.query.sqm.tree.select.SqmQuerySpec.copy(SqmQuerySpec.java:53) at org.hibernate.query.sqm.tree.select.SqmSelectStatement.copy(SqmSelectStatement.java:131) at org.hibernate.query.sqm.tree.select.SqmSelectStatement.copy(SqmSelectStatement.java:42) at org.hibernate.query.sqm.internal.QuerySqmImpl.<init>(QuerySqmImpl.java:227) at org.hibernate.internal.AbstractSharedSessionContract.createQuery(AbstractSharedSessionContract.java:1295) at org.hibernate.internal.SessionImpl.createQuery(SessionImpl.java:181) The issue appears to be caused by the copy method of the treatedPath.get("property") object: here, the left-hand side, which is the {{treat}}ed path, causes another copy of the property to be triggered while the first one was still being processed and not registered. ( https://hibernate.atlassian.net/browse/HHH-16014#add-comment?atlOrigin=ey... ) Add Comment ( https://hibernate.atlassian.net/browse/HHH-16014#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#100213- sha1:cca7326 )