[hibernate-issues] [Hibernate-JIRA] Resolved: (HHH-2648) NPE in FromClause.java

NPE in FromClause.java ---------------------- Key: HHH-2648 URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-2648 Project: Hibernate3 Issue Type: Bug Components: core Affects Versions: 3.2.1 Environment: JBoss 4.2, JDK 1.5 Reporter: Heiko W. Rupp Assignee: Diego Pires Plentz This JPA Query query="SELECT m " + "FROM MeasurementDataTrait AS m " + "WHERE m.schedule.resource.id = :resourceId" + " AND m.schedule.definition.displayType = :displayType " + " AND m.id.timestamp = (" + " SELECT MAX(mdt.id.timestamp) " + " FROM MeasurementDataTrait AS mdt" + " WHERE m.scheduleId = mdt.scheduleId" + " )" + " GROUP BY m " + " ORDER BY m.id.timestamp DESC" Results in this NPE: java.lang.NullPointerException at org.hibernate.hql.ast.tree.FromClause.findIntendedAliasedFromElementBasedOnCrazyJPARequirements(FromClause.java:120) at org.hibernate.hql.ast.tree.FromClause.getFromElement(FromClause.java:107) at org.hibernate.hql.ast.tree.FromElementFactory.addFromElement(FromElementFactory.java:81) at org.hibernate.hql.ast.tree.FromClause.addFromElement(FromClause.java:70) at org.hibernate.hql.ast.HqlSqlWalker.createFromElement(HqlSqlWalker.java:255) at org.hibernate.hql.antlr.HqlSqlBaseWalker.fromElement(HqlSqlBaseWalker.java:3056) at org.hibernate.hql.antlr.HqlSqlBaseWalker.fromElementList(HqlSqlBaseWalker.java:2945) at org.hibernate.hql.antlr.HqlSqlBaseWalker.fromClause(HqlSqlBaseWalker.java:688) at org.hibernate.hql.antlr.HqlSqlBaseWalker.query(HqlSqlBaseWalker.java:544) at org.hibernate.hql.antlr.HqlSqlBaseWalker.exprOrSubquery(HqlSqlBaseWalker.java:4049) at org.hibernate.hql.antlr.HqlSqlBaseWalker.comparisonExpr(HqlSqlBaseWalker.java:3528) 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.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) When I remove the subselect, then the query gets parsed nicely.