[hibernate-issues] [Hibernate-JIRA] Resolved: (HHH-4969) NullPointerException in FromClause.findIntendedAliasedFromElementBasedOnCrazyJPARequirements due to null alias map key

NullPointerException in FromClause.findIntendedAliasedFromElementBasedOnCrazyJPARequirements due to null alias map key ---------------------------------------------------------------------------------------------------------------------- Key: HHH-4969 URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-4969 Project: Hibernate Core Issue Type: Bug Components: core Affects Versions: 3.2.4.sp1 Environment: Java version: 1.6.0_16,Sun Microsystems Inc. Java VM: Java HotSpot(TM) 64-Bit Server VM 14.2-b01,Sun Microsystems Inc. OS-System: Linux 2.6.25.14-69.fc8,amd64 Hibernate 3.2.4.sp1 JBosss-4.2.3.GA DB2 v8 / JDBC Driver v4.7.85 Reporter: Jürgen Got a NullPointerException in {{org.hibernate.hql.ast.tree.FromClause.findIntendedAliasedFromElementBasedOnCrazyJPARequirements(String)}} due to fromElementByClassAlias Map key being null. Only for certain HQL query, along the lines of: {code} SELECT c FROM C c, IN(c.t) t, IN(c.k.x) x WHERE c.k.u = 'K' AND t.end >= CURRENT_DATE {code} Removing {{IN(c.k.x) x}} or {{c.k.u = 'K'}} will not result in a NullPointerException, most likely due to no null alias key put into the map. specifiedAlias param was "CURRENT_DATE" when findIntendedAliasedFromElementBasedOnCrazyJPARequirements was called. {code} private FromElement findIntendedAliasedFromElementBasedOnCrazyJPARequirements(String specifiedAlias) { ... if ( alias.equalsIgnoreCase( specifiedAlias ) ) { // alias can be null here .. } {code} {code} java.lang.NullPointerException at org.hibernate.hql.ast.tree.FromClause.findIntendedAliasedFromElementBasedOnCrazyJPARequirements(FromClause.java:120) at org.hibernate.hql.ast.tree.FromClause.containsClassAlias(FromClause.java:247) at org.hibernate.hql.ast.tree.FromClause.isFromElementAlias(FromClause.java:135) at org.hibernate.hql.ast.HqlSqlWalker.isNonQualifiedPropertyRef(HqlSqlWalker.java:467) at org.hibernate.hql.antlr.HqlSqlBaseWalker.addrExpr(HqlSqlBaseWalker.java:4382) at org.hibernate.hql.antlr.HqlSqlBaseWalker.expr(HqlSqlBaseWalker.java:1212) at org.hibernate.hql.antlr.HqlSqlBaseWalker.exprOrSubquery(HqlSqlBaseWalker.java:4041) at org.hibernate.hql.antlr.HqlSqlBaseWalker.comparisonExpr(HqlSqlBaseWalker.java:3648) at org.hibernate.hql.antlr.HqlSqlBaseWalker.logicalExpr(HqlSqlBaseWalker.java:1762) at org.hibernate.hql.antlr.HqlSqlBaseWalker.logicalExpr(HqlSqlBaseWalker.java:1690) at org.hibernate.hql.antlr.HqlSqlBaseWalker.logicalExpr(HqlSqlBaseWalker.java:1687) at org.hibernate.hql.antlr.HqlSqlBaseWalker.logicalExpr(HqlSqlBaseWalker.java:1687) 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:228) at org.hibernate.hql.ast.QueryTranslatorImpl.doCompile(QueryTranslatorImpl.java:160) at org.hibernate.hql.ast.QueryTranslatorImpl.compile(QueryTranslatorImpl.java:111) at org.hibernate.engine.query.HQLQueryPlan.<init>(HQLQueryPlan.java:77) at org.hibernate.engine.query.HQLQueryPlan.<init>(HQLQueryPlan.java:56) at org.hibernate.engine.query.QueryPlanCache.getHQLQueryPlan(QueryPlanCache.java:72) at org.hibernate.impl.SessionFactoryImpl.checkNamedQueries(SessionFactoryImpl.java:402) at org.hibernate.impl.SessionFactoryImpl.<init>(SessionFactoryImpl.java:352) at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1294) at org.hibernate.ejb.Ejb3Configuration.buildEntityManagerFactory(Ejb3Configuration.java:713) at org.hibernate.ejb.HibernatePersistence.createContainerEntityManagerFactory(HibernatePersistence.java:127) at org.jboss.ejb3.entity.PersistenceUnitDeployment.start(PersistenceUnitDeployment.java:246) at sun.reflect.GeneratedMethodAccessor622.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at org.jboss.ejb3.ServiceDelegateWrapper.startService(ServiceDelegateWrapper.java:103) at org.jboss.system.ServiceMBeanSupport.jbossInternalStart(ServiceMBeanSupport.java:289) at org.jboss.system.ServiceMBeanSupport.jbossInternalLifecycle(ServiceMBeanSupport.java:245) at sun.reflect.GeneratedMethodAccessor5.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at org.jboss.mx.interceptor.ReflectedDispatcher.invoke(ReflectedDispatcher.java:155) at org.jboss.mx.server.Invocation.dispatch(Invocation.java:94) at org.jboss.mx.server.Invocation.invoke(Invocation.java:86) at org.jboss.mx.server.AbstractMBeanInvoker.invoke(AbstractMBeanInvoker.java:264) at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:659) at org.jboss.system.server.jmx.LazyMBeanServer.invoke(LazyMBeanServer.java:291) at org.jboss.system.ServiceController$ServiceProxy.invoke(ServiceController.java:978) at $Proxy0.start(Unknown Source) at org.jboss.system.ServiceController.start(ServiceController.java:417) {code}