[hibernate-issues] [JIRA] (HHH-15452) Predicate add expresion results in UnsupportedOperationException

Hernan ( https://hibernate.atlassian.net/secure/ViewProfile.jspa?accountId=62fba63... ) *created* an issue Hibernate ORM ( https://hibernate.atlassian.net/browse/HHH?atlOrigin=eyJpIjoiZmZkMWJlYzcw... ) / Bug ( https://hibernate.atlassian.net/browse/HHH-15452?atlOrigin=eyJpIjoiZmZkMW... ) HHH-15452 ( https://hibernate.atlassian.net/browse/HHH-15452?atlOrigin=eyJpIjoiZmZkMW... ) Predicate add expresion results in UnsupportedOperationException ( https://hibernate.atlassian.net/browse/HHH-15452?atlOrigin=eyJpIjoiZmZkMW... ) Issue Type: Bug Affects Versions: 6.1.1 Assignee: Unassigned Components: hibernate-core Created: 16/Aug/2022 07:55 AM Environment: Hibernate ORM core version 6.1.1.Final, openjdk version "11" 2018-09-25, Ubuntu 20.04.4 LTS, SQL Server 2008 R2 (SP3) Priority: Major Reporter: Hernan ( https://hibernate.atlassian.net/secure/ViewProfile.jspa?accountId=62fba63... ) While upgrating Hibernate version from 4.3.7 to 6.1.1 I'm getting an Exception running a piece of code that used to work and is found in several tutorials and examples The simplest code I can build to show the behavior is: CriteriaBuilder builder = em4.getCriteriaBuilder(); CriteriaQuery<Persona> cq = builder.createQuery(Persona.class); Root<Persona> rootClaseGrid = cq.from(Persona.class); cq.select(rootClaseGrid); Predicate conjuncion = builder.conjunction(); Predicate expr = builder.equal(rootClaseGrid.get( "documento" ), "AAAA" ); conjuncion.getExpressions().add(expr); Last line throws: Exception in thread "main" java.lang.UnsupportedOperationException at java.base/java.util.AbstractList.add(AbstractList.java:153) at java.base/java.util.AbstractList.add(AbstractList.java:111) at pruebas.PruebaHM.main(PruebaHM.java:181) Debugging Hibernate code shows that method "getExpressions" resolves in class "org.hibernate.query.sqm.tree.predicate.AbstractSqmPredicate", with code: @Override public List<Expression< Boolean >> getExpressions() { /// most predicates do not have sub-predicates return Collections.emptyList(); } in fact returning always an emptyList of java.util.AbstractList, trying to add elements always throws UnsupportedOperationException: public void add( int index, E element) { throw new UnsupportedOperationException(); } Older versions (for instance 4.3.7) manage a list of Expression<Boolean>, the last line in the code above resolves in class "org.hibernate.jpa.criteria.predicate.CompoundPredicate" : @Override public List<Expression< Boolean >> getExpressions() { return expressions; } Thanks in advance ( https://hibernate.atlassian.net/browse/HHH-15452#add-comment?atlOrigin=ey... ) Add Comment ( https://hibernate.atlassian.net/browse/HHH-15452#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#100204- sha1:f005d5a )