Hi there,

Does anyone know what will cause the class casting error shown below? I'm using Hibernate in Knopflerfish (an OSGi container.)

Thanks

Aug 9, 2004 2:52:50 PM net.sf.hibernate.transaction.TransactionFactoryFactory buildTransactionFactory
INFO: Transaction strategy: net.sf.hibernate.transaction.JDBCTransactionFactory
[stderr] java.lang.ClassCastException
[stderr] at net.sf.hibernate.transaction.TransactionFactoryFactory.buildTransactionFactory(TransactionFactoryFactory.java:34)
[stderr] at net.sf.hibernate.cfg.SettingsFactory.buildSettings(SettingsFactory.java:65)
[stderr] at net.sf.hibernate.cfg.Configuration.buildSettings(Configuration.java:1132)
[stderr] at net.sf.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:766)
[stderr] at example.MyTestBundle.impl.TestServiceImpl.<init>(TestServiceImpl.java:115)
[stderr] at example.MyTestBundle.impl.ServiceActivator.start(ServiceActivator.java:34)
[stderr] at org.knopflerfish.framework.BundleImpl$1.run(BundleImpl.java:262)
[stderr] at java.security.AccessController.doPrivileged(Native Method)
[stderr] at org.knopflerfish.framework.BundleImpl.start(BundleImpl.java:236)
[stderr] at org.knopflerfish.bundle.desktop.swing.Desktop.startBundle(Desktop.java:1796)
[stderr] at org.knopflerfish.bundle.desktop.swing.Desktop.addFile(Desktop.java:2011)
[stderr] at org.knopflerfish.bundle.desktop.swing.Desktop.drop(Desktop.java:1960)
[stderr] at java.awt.dnd.DropTarget.drop(DropTarget.java:398)
[stderr] at sun.awt.dnd.SunDropTargetContextPeer.processDropMessage(SunDropTargetContextPeer.java:542)
[stderr] at sun.awt.dnd.SunDropTargetContextPeer.access$800(SunDropTargetContextPeer.java:52)
[stderr] at sun.awt.dnd.SunDropTargetContextPeer$EventDispatcher.dispatchDropEvent(SunDropTargetContextPeer.java:805)
[stderr] at sun.awt.dnd.SunDropTargetContextPeer$EventDispatcher.dispatchEvent(SunDropTargetContextPeer.java:743)
[stderr] at sun.awt.dnd.SunDropTargetEvent.dispatch(SunDropTargetEvent.java:29)
[stderr] at java.awt.Component.dispatchEventImpl(Component.java:3494)
[stderr] at java.awt.Container.dispatchEventImpl(Container.java:1627)
[stderr] at java.awt.Component.dispatchEvent(Component.java:3477)
[stderr] at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:3483)
[stderr] at java.awt.LightweightDispatcher.processDropTargetEvent(Container.java:3269)
[stderr] at java.awt.LightweightDispatcher.dispatchEvent(Container.java:3123)
[stderr] at java.awt.Container.dispatchEventImpl(Container.java:1613)
[stderr] at java.awt.Window.dispatchEventImpl(Window.java:1606)
[stderr] at java.awt.Component.dispatchEvent(Component.java:3477)
[stderr] at java.awt.EventQueue.dispatchEvent(EventQueue.java:456)
[stderr] at java.awt.EventDispatchThread.pumpOneEventForHierarchy(EventDispatchThread.java:201)
[stderr] at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:151)
[stderr] at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:145)
[stderr] at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:137)
[stderr] at java.awt.EventDispatchThread.run(EventDispatchThread.java:100)
Aug 9, 2004 2:52:50 PM net.sf.hibernate.connection.DriverManagerConnectionProvider close

Can you show the code where the classCastException is thrown.

I'm attching the code. The error happened at the last statement when building session factory.
I had to pass in URL because inside a OSGi bundle, Hibernate could not find where the mapping file is.

Let me know if you have any ideas,

Peng
Properties props = new Properties();
props.setProperty("hibernate.connection.url","jdbc:mysql://localhost:3306/jbossdb");
props.setProperty("hibernate.connection.driver_class","com.mysql.jdbc.Driver");
props.setProperty("hibernate.connection.username","jboss");
props.setProperty("hibernate.connection.password","password");
props.setProperty("hibernate.dialect","net.sf.hibernate.dialect.MySQLDialect");
props.setProperty("hibernate.show_sql","false");
props.setProperty("hibernate.use_outer_join","true");
props.setProperty("hibernate.transaction.factory_class","net.sf.hibernate.transaction.JDBCTransactionFactory");

URL url = bc.getBundle().getResource("/DataDomainUser.hbm.xml");

Configuration config = new Configuration()
.addURL(url)
.setProperties(props);

SessionFactory sessionFactory = config.buildSessionFactory();

I can't see any problems in your code. Try to set a breakpoint on the line where the ClassCastException occurs and then you will see which type will occure this exception. Maybe you come one step further with this.

Reto