I have the following named query: | @NamedQuery(name = SalesOrderExtraChargeLine.QUERY_UNBILLED_DATERANGE, query = | "SELECT el FROM SalesOrderExtraChargeLine el WHERE el.order.orderDate >= :startDate AND el.order.orderDate <= :endDate AND el.invoiceLines IS EMPTY AND NOT EXISTS (SELECT pl FROM SalesOrderProductLine pl WHERE pl.order = el.order AND pl.status <> :deliveredStatus)") | When I deploy the app, I get the following error: | 17:57:06,287 WARN [ServiceController] Problem starting service persistence.units:ear=Etikettu.ear,jar=Etikettu-EJB.jar,unitName=etikettu | 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.collectionFunctionOrSubselect(HqlSqlBaseWalker.java:4253) | at org.hibernate.hql.antlr.HqlSqlBaseWalker.comparisonExpr(HqlSqlBaseWalker.java:3968) | at org.hibernate.hql.antlr.HqlSqlBaseWalker.logicalExpr(HqlSqlBaseWalker.java:1762) | at org.hibernate.hql.antlr.HqlSqlBaseWalker.logicalExpr(HqlSqlBaseWalker.java:1737) | 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) | ... | SalesOrderProductLine and SalesOrderExtraChargeLine are both inherited from the same base entity (SalesOrderLine) using "JOINED" inheritance. What am I doing wrong? View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4108154#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...