Hi everyone,
I am desperately trying to make hibernate work with Apache Derby plugin in my eclipse RCP project.
When I run the application i get an error saying unable to instantiate driver class file. The details are listed below.
Any help is much appreciated.
Here is my config file
Code:
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE hibernate-configuration PUBLIC "-//Hibernate/Hibernate Configuration DTD 3.0//EN"
"http://hibernate.sourceforge.net/hibernate-configuration-3.0.dtd">
<hibernate-configuration>
<session-factory name="mySessionFactory">
<property name="hibernate.connection.driver_class">org.apache.derby.jdbc.EmbeddedDriver</property>
<property name="hibernate.connection.url">jdbc:derby:/Users/Shashank/Desktop/rubrics/Rubrics/database/rubricsData</property>
<property name="hibernate.dialect">org.hibernate.dialect.DerbyDialect</property>
<property name="hibernate.show_sql">true</property>
<property name="hibernate.hbm2ddl.auto">update</property>
<property name="hibernate.connection.provider_class">org.hibernate.connection.C3P0ConnectionProvider</property>
<property name="hibernate.format_sql">false</property>
</session-factory>
</hibernate-configuration>
I have derby databases properly setup. I am also able to get access to the database using Hibernate console configuration in the Eclipse IDE.
But when I run the application I get the following errors:
Quote:
log4j:WARN No appenders could be found for logger (org.hibernate.cfg.annotations.Version).
log4j:WARN Please initialize the log4j system properly.
JDBC Driver class not found: org.apache.derby.jdbc.EmbeddedDriver
!SESSION 2012-07-16 12:07:17.589 -----------------------------------------------
eclipse.buildId=unknown
java.version=1.6.0_33
java.vendor=Apple Inc.
BootLoader constants: OS=macosx, ARCH=x86_64, WS=cocoa, NL=en_US
Framework arguments: -product Rubrics.product
Command-line arguments: -product Rubrics.product -data /Users/Shashank/Desktop/rubrics/../runtime-pc.product -dev file:/Users/Shashank/Desktop/rubrics/.metadata/.plugins/org.eclipse.pde.core/pc.product/dev.properties -os macosx -ws cocoa -arch x86_64 -consoleLog
!ENTRY org.eclipse.osgi 4 0 2012-07-16 12:07:19.075
!MESSAGE Application error
!STACK 1
java.lang.ExceptionInInitializerError
at rubrics.datatools.HibernateUtil.getSessionFactory(HibernateUtil.java:25)
at rubrics.RubricsApplication.start(RubricsApplication.java:44)
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:344)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:179)
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:597)
at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:622)
at org.eclipse.equinox.launcher.Main.basicRun(Main.java:577)
at org.eclipse.equinox.launcher.Main.run(Main.java:1410)
at org.eclipse.equinox.launcher.Main.main(Main.java:1386)
Caused by: org.hibernate.HibernateException: JDBC Driver class not found: org.apache.derby.jdbc.EmbeddedDriver
at org.hibernate.connection.C3P0ConnectionProvider.configure(C3P0ConnectionProvider.java:123)
at org.hibernate.connection.ConnectionProviderFactory.newConnectionProvider(ConnectionProviderFactory.java:143)
at org.hibernate.connection.ConnectionProviderFactory.newConnectionProvider(ConnectionProviderFactory.java:84)
at org.hibernate.cfg.SettingsFactory.createConnectionProvider(SettingsFactory.java:438)
at org.hibernate.cfg.SettingsFactory.buildSettings(SettingsFactory.java:91)
at org.hibernate.cfg.Configuration.buildSettingsInternal(Configuration.java:2163)
at org.hibernate.cfg.Configuration.buildSettings(Configuration.java:2159)
at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1383)
at org.hibernate.cfg.AnnotationConfiguration.buildSessionFactory(AnnotationConfiguration.java:954)
at rubrics.datatools.HibernateUtil.getSessionFactory(HibernateUtil.java:19)
... 14 more
Caused by: java.lang.ClassNotFoundException: org.apache.derby.jdbc.EmbeddedDriver
at org.eclipse.osgi.internal.loader.BundleLoader.findClassInternal(BundleLoader.java:513)
at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:429)
at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:417)
at org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.loadClass(DefaultClassLoader.java:107)
at java.lang.ClassLoader.loadClass(ClassLoader.java:247)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:169)
at org.hibernate.util.ReflectHelper.classForName(ReflectHelper.java:192)
at org.hibernate.connection.C3P0ConnectionProvider.configure(C3P0ConnectionProvider.java:118)
... 23 more
An error has occurred. See the log file
/Users/Shashank/Desktop/runtime-pc.product/.metadata/.log.
Here is the code where the exceptions are generated:
Code:
package rubrics.datatools;
import org.hibernate.SessionFactory;
import org.hibernate.cfg.Configuration;
import rubrics.RubricsPlugin;
import org.hibernate.cfg.AnnotationConfiguration;
public class HibernateUtil {
private static SessionFactory sessionFactory = null;
public static SessionFactory getSessionFactory()
{
if(sessionFactory == null)
{
try {
Class.forName("org.apache.derby.jdbc.EmbeddedDriver").newInstance();
sessionFactory = new AnnotationConfiguration().configure(RubricsPlugin.hibernateCfgPath).buildSessionFactory();
}
catch (Throwable ex)
{
System.out.println(ex.getMessage());
throw new ExceptionInInitializerError(ex);
}
}
return sessionFactory;
}
}
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