[hibernate-issues] [Hibernate-JIRA] Updated: (HHH-4589) Better exception when user attempts to join on component

Better exception when user attempts to join on component -------------------------------------------------------- Key: HHH-4589 URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-4589 Project: Hibernate Core Issue Type: Improvement Components: query-hql Affects Versions: 3.3.2 Environment: Hibernate 3.3.2.GA, Java 6 (Sun), Linux, Mysql 5 Reporter: Rodrigo Carvalho Rezende Priority: Minor Fix For: 3.3.x Attachments: hb-hql-join-embedded-bug.tar.gz When I join a entity with a embedded class in HQL a null pointer exception is thrown. See the stack trace: Exception in thread "main" java.lang.NullPointerException at org.hibernate.hql.ast.HqlSqlWalker.createFromJoinElement(HqlSqlWalker.java:371) at org.hibernate.hql.antlr.HqlSqlBaseWalker.joinElement(HqlSqlBaseWalker.java:3452) at org.hibernate.hql.antlr.HqlSqlBaseWalker.fromElement(HqlSqlBaseWalker.java:3239) at org.hibernate.hql.antlr.HqlSqlBaseWalker.fromElementList(HqlSqlBaseWalker.java:3112) at org.hibernate.hql.antlr.HqlSqlBaseWalker.fromClause(HqlSqlBaseWalker.java:720) at org.hibernate.hql.antlr.HqlSqlBaseWalker.query(HqlSqlBaseWalker.java:571) at org.hibernate.hql.antlr.HqlSqlBaseWalker.selectStatement(HqlSqlBaseWalker.java:288) at org.hibernate.hql.antlr.HqlSqlBaseWalker.statement(HqlSqlBaseWalker.java:231) at org.hibernate.hql.ast.QueryTranslatorImpl.analyze(QueryTranslatorImpl.java:254) at org.hibernate.hql.ast.QueryTranslatorImpl.doCompile(QueryTranslatorImpl.java:185) at org.hibernate.hql.ast.QueryTranslatorImpl.compile(QueryTranslatorImpl.java:136) at org.hibernate.engine.query.HQLQueryPlan.<init>(HQLQueryPlan.java:101) at org.hibernate.engine.query.HQLQueryPlan.<init>(HQLQueryPlan.java:80) at org.hibernate.engine.query.QueryPlanCache.getHQLQueryPlan(QueryPlanCache.java:94) at org.hibernate.impl.AbstractSessionImpl.getHQLQueryPlan(AbstractSessionImpl.java:156) at org.hibernate.impl.AbstractSessionImpl.createQuery(AbstractSessionImpl.java:135) at org.hibernate.impl.SessionImpl.createQuery(SessionImpl.java:1651) at org.hibernate.ejb.AbstractEntityManagerImpl.createQuery(AbstractEntityManagerImpl.java:93) at BugNullPointerException.main(BugNullPointerException.java:15) I've isolated the behavior in an attached JSE (eclipse) project to be reproducible (pls, create the "hb_hql_join_embedded_bug" database) Thanks, Rodrigo.