But noe , when in HQL editor just type from MyClass got the error: j | java.lang.IllegalArgumentException: node to traverse cannot be null! | at org.hibernate.hql.ast.util.NodeTraverser.traverseDepthFirst(NodeTraverser.java:31) | at org.hibernate.hql.ast.QueryTranslatorImpl.parse(QueryTranslatorImpl.java:254) | at org.hibernate.hql.ast.QueryTranslatorImpl.doCompile(QueryTranslatorImpl.java:157) | 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.AbstractSessionImpl.getHQLQueryPlan(AbstractSessionImpl.java:133) | at org.hibernate.impl.AbstractSessionImpl.createQuery(AbstractSessionImpl.java:112) | at org.hibernate.impl.SessionImpl.createQuery(SessionImpl.java:1623) | at org.hibernate.console.HQLQueryPage.setSession(HQLQueryPage.java:103) | at org.hibernate.console.ConsoleConfiguration$4.execute(ConsoleConfiguration.java:380) | at org.hibernate.console.execution.DefaultExecutionContext.execute(DefaultExecutionContext.java:65) | at org.hibernate.console.ConsoleConfiguration.executeHQLQuery(ConsoleConfiguration.java:375) | at org.hibernate.eclipse.hqleditor.HQLEditor.executeQuery(HQLEditor.java:374) | at org.hibernate.eclipse.console.actions.ExecuteQueryAction.execute(ExecuteQueryAction.java:72) | at org.hibernate.eclipse.console.actions.ExecuteQueryAction.run(ExecuteQueryAction.java:52) | at org.eclipse.jface.action.Action.runWithEvent(Action.java:498) | at org.hibernate.eclipse.console.actions.ExecuteQueryAction.runWithEvent(ExecuteQueryAction.java:56) | at org.eclipse.jface.action.ActionContributionItem.handleWidgetSelection(ActionContributionItem.java:545) | at org.eclipse.jface.action.ActionContributionItem.access$2(ActionContributionItem.java:490) | at org.eclipse.jface.action.ActionContributionItem$6.handleEvent(ActionContributionItem.java:443) | at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:66) | at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:938) | at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:3682) | at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3293) | at org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.java:2389) | at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:2353) | at org.eclipse.ui.internal.Workbench.access$4(Workbench.java:2219) | at org.eclipse.ui.internal.Workbench$4.run(Workbench.java:466) | at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:289) | at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:461) | at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:149) | at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:106) | at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:153) | at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:106) | at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:76) | at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:363) | at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:176) | at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) | at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) | at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) | at java.lang.reflect.Method.invoke(Method.java:585) | at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:504) | at org.eclipse.equinox.launcher.Main.basicRun(Main.java:443) | at org.eclipse.equinox.launcher.Main.run(Main.java:1169) | Some idea? View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4069960#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...