EJBQL null pointer exception in parsing bad EJBQL does not help troubleshoot syntax errors ------------------------------------------------------------------------------------------ Key: HHH-1609 URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-1609 Project: Hibernate3 Issue Type: Improvement Components: query-hql Affects Versions: 3.1.1 Reporter: Andrew Robinson Assignee: Diego Pires Plentz Priority: Minor Fix For: 3.2.0.cr3 The following EJBQL (which is lacking the alias 'u' for the User object) produces a null pointer exception: select u from User where u.username = :username Exception: Caused by: java.lang.NullPointerException at org.hibernate.hql.ast.tree.IdentNode.resolveAsNakedComponentPropertyRefLHS(IdentNode.java:195) at org.hibernate.hql.ast.tree.IdentNode.resolve(IdentNode.java:85) at org.hibernate.hql.ast.tree.DotNode.resolveFirstChild(DotNode.java:139) at org.hibernate.hql.ast.HqlSqlWalker.lookupProperty(HqlSqlWalker.java:397) at org.hibernate.hql.antlr.HqlSqlBaseWalker.addrExpr(HqlSqlBaseWalker.java:4316) at org.hibernate.hql.antlr.HqlSqlBaseWalker.expr(HqlSqlBaseWalker.java:1211) at org.hibernate.hql.antlr.HqlSqlBaseWalker.exprOrSubquery(HqlSqlBaseWalker.java:4032) at org.hibernate.hql.antlr.HqlSqlBaseWalker.comparisonExpr(HqlSqlBaseWalker.java:3518) at org.hibernate.hql.antlr.HqlSqlBaseWalker.logicalExpr(HqlSqlBaseWalker.java:1758) at org.hibernate.hql.antlr.HqlSqlBaseWalker.whereClause(HqlSqlBaseWalker.java:776) at org.hibernate.hql.antlr.HqlSqlBaseWalker.query(HqlSqlBaseWalker.java:577) at org.hibernate.hql.antlr.HqlSqlBaseWalker.selectStatement(HqlSqlBaseWalker.java:281) at org.hibernate.hql.antlr.HqlSqlBaseWalker.statement(HqlSqlBaseWalker.java:229) at org.hibernate.hql.ast.QueryTranslatorImpl.analyze(QueryTranslatorImpl.java:218) at org.hibernate.hql.ast.QueryTranslatorImpl.doCompile(QueryTranslatorImpl.java:158) at org.hibernate.hql.ast.QueryTranslatorImpl.compile(QueryTranslatorImpl.java:109) at org.hibernate.engine.query.HQLQueryPlan.<init>(HQLQueryPlan.java:75) at org.hibernate.engine.query.HQLQueryPlan.<init>(HQLQueryPlan.java:54) at org.hibernate.engine.query.QueryPlanCache.getHQLQueryPlan(QueryPlanCache.java:71) at org.hibernate.impl.AbstractSessionImpl.getHQLQueryPlan(AbstractSessionImpl.java:134) at org.hibernate.impl.AbstractSessionImpl.createQuery(AbstractSessionImpl.java:113) at org.hibernate.impl.SessionImpl.createQuery(SessionImpl.java:1602) at org.hibernate.ejb.AbstractEntityManagerImpl.createQuery(AbstractEntityManagerImpl.java:54) This type of syntax error handling make troubleshooting the problem extremely difficult