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nathanmoon
 Post subject: joined-subclass and PropertyNotFoundException
PostPosted: Fri Jun 17, 2005 3:52 pm 
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Joined: Wed Apr 06, 2005 5:03 pm
Posts: 273
Location: Salt Lake City, Utah, USA
Hibernate version: 3.0.5

I have two classes - School and Site. Site is a joined-subclass of School. School has a String ID, called 'school_uuid'. So Site inherits 'school_uuid' as its ID from School. But creating the SessionFactory is failing saying it can't find a getter for 'SiteId' in the Site POJO. My Site POJO doesn't have a getter for 'SiteId' (I don't know where that's even coming from), and the getter for 'school_uuid' is in the parent School class.

Any ideas what I'm doing wrong with my mapping files?

Mapping documents:

School:

Code:
<hibernate-mapping
   package="com.something.user.entity"
   schema="lms"
        default-lazy="false">

   
   <class name="School"
          table="schools">
      <id name="schoolUuid"
          column="school_uuid"
          type="java.lang.String"
          length="36">
         <generator class="com.something.spring.HibernateUuidGenerator"/>
      </id>
...


Site:

Code:
<hibernate-mapping package="org.something.data.db.hibernate">
   <joined-subclass
      name="Site"
      table="site"
      schema="sm"
      extends="com.something.user.entity.School">

      <key column="school_uuid" />
...



Full stack trace of any exception that occurs:

Quote:
Caused by: org.hibernate.PropertyNotFoundException: Could not find a getter for SiteId in class org.something.data.db.hibernate.Site
at org.hibernate.property.BasicPropertyAccessor.createGetter(BasicPropertyAccessor.java:281)
at org.hibernate.property.BasicPropertyAccessor.getGetter(BasicPropertyAccessor.java:274)
at org.hibernate.tuple.PropertyFactory.getGetter(PropertyFactory.java:160)
at org.hibernate.tuple.PropertyFactory.buildIdentifierProperty(PropertyFactory.java:42)
at org.hibernate.tuple.EntityMetamodel.<init>(EntityMetamodel.java:108)
at org.hibernate.persister.entity.BasicEntityPersister.<init>(BasicEntityPersister.java:400)
at org.hibernate.persister.entity.SingleTableEntityPersister.<init>(SingleTableEntityPersister.java:104)
at org.hibernate.persister.PersisterFactory.createClassPersister(PersisterFactory.java:55)
at org.hibernate.impl.SessionFactoryImpl.<init>(SessionFactoryImpl.java:212)
at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:981)
at
...
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nathanmoon
 Post subject:
PostPosted: Fri Jun 17, 2005 5:26 pm 
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Joined: Wed Apr 06, 2005 5:03 pm
Posts: 273
Location: Salt Lake City, Utah, USA
The above posted exception is what I got when trying to run unit tests. Interestingly, if I use the eclipse plugin Hibernate Console Configuration and try to create a session factory, I get the following exception:

Quote:
org.hibernate.PropertyAccessException: IllegalArgumentException occurred calling getter of com.something.user.entity.User.userUuid
at org.hibernate.property.BasicPropertyAccessor$BasicGetter.get(BasicPropertyAccessor.java:119)
at org.hibernate.engine.UnsavedValueFactory.getUnsavedIdentifierValue(UnsavedValueFactory.java:44)
at org.hibernate.tuple.PropertyFactory.buildIdentifierProperty(PropertyFactory.java:42)
at org.hibernate.tuple.EntityMetamodel.<init>(EntityMetamodel.java:108)
at org.hibernate.persister.entity.BasicEntityPersister.<init>(BasicEntityPersister.java:400)
at org.hibernate.persister.entity.JoinedSubclassEntityPersister.<init>(JoinedSubclassEntityPersister.java:87)
at org.hibernate.persister.PersisterFactory.createClassPersister(PersisterFactory.java:58)
at org.hibernate.impl.SessionFactoryImpl.<init>(SessionFactoryImpl.java:211)
at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1005)
at org.hibernate.console.ConsoleConfiguration$1.execute(ConsoleConfiguration.java:222)
at org.hibernate.console.ConsoleConfiguration.execute(ConsoleConfiguration.java:77)
at org.hibernate.console.ConsoleConfiguration.initSessionFactory(ConsoleConfiguration.java:220)
at org.hibernate.eclipse.console.actions.BuildSessionFactoryAction.doRun(BuildSessionFactoryAction.java:51)
at org.hibernate.eclipse.console.actions.ConsoleConfigurationBasedAction.run(ConsoleConfigurationBasedAction.java:47)
at org.eclipse.ui.actions.BaseSelectionListenerAction.runWithEvent(BaseSelectionListenerAction.java:167)
at org.eclipse.jface.action.ActionContributionItem.handleWidgetSelection(ActionContributionItem.java:538)
at org.eclipse.jface.action.ActionContributionItem.access$2(ActionContributionItem.java:488)
at org.eclipse.jface.action.ActionContributionItem$5.handleEvent(ActionContributionItem.java:400)
at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:66)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:844)
at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:3058)
at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:2691)
at org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.java:1716)
at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:1680)
at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:365)
at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:143)
at org.eclipse.ui.internal.ide.IDEApplication.run(IDEApplication.java:103)
at org.eclipse.core.internal.runtime.PlatformActivator$1.run(PlatformActivator.java:226)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:376)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:163)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:585)
at org.eclipse.core.launcher.Main.invokeFramework(Main.java:334)
at org.eclipse.core.launcher.Main.basicRun(Main.java:278)
at org.eclipse.core.launcher.Main.run(Main.java:973)
at org.eclipse.core.launcher.Main.main(Main.java:948)
Caused by: java.lang.IllegalArgumentException: object is not an instance of declaring class
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:585)
at org.hibernate.property.BasicPropertyAccessor$BasicGetter.get(BasicPropertyAccessor.java:105)
at org.hibernate.engine.UnsavedValueFactory.getUnsavedIdentifierValue(UnsavedValueFactory.java:44)
at org.hibernate.tuple.PropertyFactory.buildIdentifierProperty(PropertyFactory.java:42)
at org.hibernate.tuple.EntityMetamodel.<init>(EntityMetamodel.java:108)
at org.hibernate.persister.entity.BasicEntityPersister.<init>(BasicEntityPersister.java:400)
at org.hibernate.persister.entity.JoinedSubclassEntityPersister.<init>(JoinedSubclassEntityPersister.java:87)
at org.hibernate.persister.PersisterFactory.createClassPersister(PersisterFactory.java:58)
at org.hibernate.impl.SessionFactoryImpl.<init>(SessionFactoryImpl.java:211)
at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1005)
at org.hibernate.console.ConsoleConfiguration$1.execute(ConsoleConfiguration.java:222)
at org.hibernate.console.ConsoleConfiguration.execute(ConsoleConfiguration.java:77)
at org.hibernate.console.ConsoleConfiguration.initSessionFactory(ConsoleConfiguration.java:220)
at org.hibernate.eclipse.console.actions.BuildSessionFactoryAction.doRun(BuildSessionFactoryAction.java:51)
at org.hibernate.eclipse.console.actions.ConsoleConfigurationBasedAction.run(ConsoleConfigurationBasedAction.java:47)
at org.eclipse.ui.actions.BaseSelectionListenerAction.runWithEvent(BaseSelectionListenerAction.java:167)
at org.eclipse.jface.action.ActionContributionItem.handleWidgetSelection(ActionContributionItem.java:538)
at org.eclipse.jface.action.ActionContributionItem.access$2(ActionContributionItem.java:488)
at org.eclipse.jface.action.ActionContributionItem$5.handleEvent(ActionContributionItem.java:400)
at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:66)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:844)
at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:3058)
at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:2691)
at org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.java:1716)
at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:1680)
at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:365)
at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:143)
at org.eclipse.ui.internal.ide.IDEApplication.run(IDEApplication.java:103)
at org.eclipse.core.internal.runtime.PlatformActivator$1.run(PlatformActivator.java:226)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:376)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:163)
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.core.launcher.Main.invokeFramework(Main.java:334)
at org.eclipse.core.launcher.Main.basicRun(Main.java:278)
at org.eclipse.core.launcher.Main.run(Main.java:973)
at org.eclipse.core.launcher.Main.main(Main.java:948)


Notice that this exception goes through org.hibernate.persister.entity.JoinedSubclassEntityPersister. This makes me think that it might be caused by the same problem as the exception I posted previously. Something must be wrong with the way I am doing joined-subclass, but I'm following the docs!

One thing to note is that I'm joining across java packages, and db schemas. Maybe that is confusing Hibernate?? I am able to generate POJOs and DDL using the Hibernate Tools without any complaints, and it all seems to be generated correctly.
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nathanmoon
 Post subject:
PostPosted: Tue Jun 21, 2005 10:55 am 
Expert
Expert

Joined: Wed Apr 06, 2005 5:03 pm
Posts: 273
Location: Salt Lake City, Utah, USA
OK, just to be complete I thought I'd post that I figured out my problems, and they were just dumb mistakes. I forgot that I had removed the hbm2java task from my build file, so my POJOs were out of date.
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