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Forum locked This topic is locked, you cannot edit posts or make further replies.  [ 2 posts ] 
Author Message
 Post subject: issue with complex query
PostPosted: Thu Dec 30, 2010 11:10 pm 
Newbie

Joined: Sun Dec 26, 2010 5:55 pm
Posts: 10
I cannot issue a complex query:

select prof.lastName , course.courseTitle
from Professor as prof
inner join Course as course
with course.professor.idProfessor = prof.idProfessor

(this is the SQL equivalent
select Course.courseTitle, Professor.lastName
from Course
inner join Professor
on Professor.idProfessor=Course.courseId;
)

The documentation for hibernate uses this syntax Table.column for where I have Course.
But this is not at all what i need. I need the courseTitle for the select clause and i need to join only WITH
course.professor.idProfessor = prof.idProfessor.
So I need both the course.courseTitle and the course.professor.idProfessor
How can I do this?

Here are the HQL Query/Hibernate Tools Console and the Mapping Diagram screen shots , respectively:
http://picasaweb.google.com/jenia.ivlev/ComplexQuery#

I get this error message:
org.hibernate.hql.ast.QuerySyntaxException: Path expected for join! [select prof.lastName , course.courseTitle
from db.Professor as prof
inner join Course as course
where course.professor.idProfessor = prof.idProfessor]

and this stack trace:

org.hibernate.hql.ast.QuerySyntaxException: Path expected for join! [select prof.lastName , course.courseTitle
from db.Professor as prof
inner join Course as course
where course.professor.idProfessor = prof.idProfessor]
at org.hibernate.hql.ast.QuerySyntaxException.convert(QuerySyntaxException.java:54)
at org.hibernate.hql.ast.QuerySyntaxException.convert(QuerySyntaxException.java:47)
at org.hibernate.hql.ast.ErrorCounter.throwQueryException(ErrorCounter.java:82)
at org.hibernate.hql.ast.QueryTranslatorImpl.analyze(QueryTranslatorImpl.java:261)
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:98)
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:1760)
at org.hibernate.console.HQLQueryPage.setSession(HQLQueryPage.java:114)
at org.hibernate.console.ConsoleConfiguration$5.execute(ConsoleConfiguration.java:261)
at org.hibernate.console.execution.DefaultExecutionContext.execute(DefaultExecutionContext.java:63)
at org.hibernate.console.ConsoleConfiguration.execute(ConsoleConfiguration.java:71)
at org.hibernate.console.ConsoleConfiguration.executeHQLQuery(ConsoleConfiguration.java:257)
at org.hibernate.eclipse.hqleditor.HQLEditor.executeQuery(HQLEditor.java:449)
at org.hibernate.eclipse.console.actions.ExecuteQueryAction.execute(ExecuteQueryAction.java:84)
at org.hibernate.eclipse.console.actions.ExecuteQueryAction.run(ExecuteQueryAction.java:55)
at org.eclipse.jface.action.Action.runWithEvent(Action.java:498)
at org.hibernate.eclipse.console.actions.ExecuteQueryAction.runWithEvent(ExecuteQueryAction.java:59)
at org.eclipse.jface.action.ActionContributionItem.handleWidgetSelection(ActionContributionItem.java:584)
at org.eclipse.jface.action.ActionContributionItem.access$2(ActionContributionItem.java:501)
at org.eclipse.jface.action.ActionContributionItem$6.handleEvent(ActionContributionItem.java:452)
at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1053)
at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:4066)
at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3657)
at org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.java:2640)
at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:2604)
at org.eclipse.ui.internal.Workbench.access$4(Workbench.java:2438)
at org.eclipse.ui.internal.Workbench$7.run(Workbench.java:671)
at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332)
at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:664)
at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:149)
at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:115)
at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:196)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:110)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:79)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:369)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:179)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:619)
at org.eclipse.equinox.launcher.Main.basicRun(Main.java:574)
at org.eclipse.equinox.launcher.Main.run(Main.java:1407)



thanks.
jenia


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 Post subject: Re: issue with complex query
PostPosted: Fri Dec 31, 2010 1:38 pm 
Newbie

Joined: Sun Dec 26, 2010 5:55 pm
Posts: 10
oh yea, sorry.

Thank you very much.
Happy New Year.
S novim godam :D


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