Archie Cobbs ( https://hibernate.atlassian.net/secure/ViewProfile.jspa?accountId=557058%... ) *created* an issue Hibernate ORM ( https://hibernate.atlassian.net/browse/HHH?atlOrigin=eyJpIjoiYWU1Y2IxNzhi... ) / Bug ( https://hibernate.atlassian.net/browse/HHH-16308?atlOrigin=eyJpIjoiYWU1Y2... ) HHH-16308 ( https://hibernate.atlassian.net/browse/HHH-16308?atlOrigin=eyJpIjoiYWU1Y2... ) NullPointerException when using CriteriaBuilder.function() inside CriteriaBuilder.construct() ( https://hibernate.atlassian.net/browse/HHH-16308?atlOrigin=eyJpIjoiYWU1Y2... ) Issue Type: Bug Affects Versions: 5.6.15 Assignee: Unassigned Components: query-criteria Created: 14/Mar/2023 15:24 PM Priority: Major Reporter: Archie Cobbs ( https://hibernate.atlassian.net/secure/ViewProfile.jspa?accountId=557058%... ) *I have a test case which I will add shortly.* In short, this works: cb.construct(NameHolder.class, e.get(Employee_.name)); but this throws NullPointerException : cb.construct(NameHolder.class, cb.function( "IFNULL" , String.class, e.get(Employee_.name), cb.literal( "(Unknown)" ))); The exception looks like this: java.lang.NullPointerException at org.hibernate.hql.internal.NameGenerator.generateColumnNames(NameGenerator.java:27) at org.hibernate.hql.internal.ast.util.SessionFactoryHelper.generateColumnNames(SessionFactoryHelper.java:435) at org.hibernate.hql.internal.ast.tree.SelectClause.initializeColumnNames(SelectClause.java:308) at org.hibernate.hql.internal.ast.tree.SelectClause.finishInitialization(SelectClause.java:298) at org.hibernate.hql.internal.ast.tree.SelectClause.initializeExplicitSelectClause(SelectClause.java:268) at org.hibernate.hql.internal.ast.HqlSqlWalker.useSelectClause(HqlSqlWalker.java:1039) at org.hibernate.hql.internal.ast.HqlSqlWalker.processQuery(HqlSqlWalker.java:807) at org.hibernate.hql.internal.antlr.HqlSqlBaseWalker.query(HqlSqlBaseWalker.java:703) at org.hibernate.hql.internal.antlr.HqlSqlBaseWalker.selectStatement(HqlSqlBaseWalker.java:339) at org.hibernate.hql.internal.antlr.HqlSqlBaseWalker.statement(HqlSqlBaseWalker.java:287) at org.hibernate.hql.internal.ast.QueryTranslatorImpl.analyze(QueryTranslatorImpl.java:276) at org.hibernate.hql.internal.ast.QueryTranslatorImpl.doCompile(QueryTranslatorImpl.java:192) at org.hibernate.hql.internal.ast.QueryTranslatorImpl.compile(QueryTranslatorImpl.java:144) at org.hibernate.engine.query.spi.HQLQueryPlan.<init>(HQLQueryPlan.java:112) at org.hibernate.engine.query.spi.HQLQueryPlan.<init>(HQLQueryPlan.java:73) at org.hibernate.engine.query.spi.QueryPlanCache.getHQLQueryPlan(QueryPlanCache.java:162) at org.hibernate.internal.AbstractSharedSessionContract.getQueryPlan(AbstractSharedSessionContract.java:636) at org.hibernate.internal.AbstractSharedSessionContract.createQuery(AbstractSharedSessionContract.java:748) at org.hibernate.internal.AbstractSharedSessionContract.createQuery(AbstractSharedSessionContract.java:811) at org.hibernate.query.criteria.internal.CriteriaQueryImpl$1.buildCompiledQuery(CriteriaQueryImpl.java:314) at org.hibernate.query.criteria.internal.compile.CriteriaCompiler.compile(CriteriaCompiler.java:170) at org.hibernate.internal.AbstractSharedSessionContract.createQuery(AbstractSharedSessionContract.java:774) at org.hibernate.internal.AbstractSessionImpl.createQuery(AbstractSessionImpl.java:23) at org.hibernate.bugs.JPAUnitTestCase.hhh123Test(JPAUnitTestCase.java:56) Note, this may be related to this similar bug reported on stackoverflow ( https://stackoverflow.com/q/72140973/263801 ). ( https://hibernate.atlassian.net/browse/HHH-16308#add-comment?atlOrigin=ey... ) Add Comment ( https://hibernate.atlassian.net/browse/HHH-16308#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#100217- sha1:7167dc8 )