Unable to instantiate specified TransactionFactory class [org.transaction.JDBCTransactionFactory]

[tangostar]

I would not have using mailing list this unless I was truely frustrated. I want to implement a very simple example using HibernateOGM but I get some exceptions, which I don't know really how can to solve them.

in the main I have started with this lock of code:

           OgmConfiguration cfgogm=new OgmConfiguration();

            cfgogm.configure();

            serviceregistry=new ServiceRegistryBuilder().applySettings(cfgogm.getProperties()).buildServiceRegistry();

            sessionfactory=cfgogm.buildSessionFactory(serviceregistry);

I can build my code successfully but if I run it  I get some exceptions:

Exception in thread "main" org.hibernate.service.spi.ServiceException: Unable to create requested service [org.hibernate.engine.transaction.spi.TransactionFactory]

at org.hibernate.service.internal.AbstractServiceRegistryImpl.createService(AbstractServiceRegistryImpl.java:186)

at org.hibernate.service.internal.AbstractServiceRegistryImpl.initializeService(AbstractServiceRegistryImpl.java:150)

at org.hibernate.service.internal.AbstractServiceRegistryImpl.getService(AbstractServiceRegistryImpl.java:131)

at org.hibernate.cfg.SettingsFactory.buildSettings(SettingsFactory.java:180)

at org.hibernate.cfg.Configuration.buildSettingsInternal(Configuration.java:2283)

at org.hibernate.cfg.Configuration.buildSettings(Configuration.java:2279)

at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1748)

at hogm.hibernateogm_mongodb.App.main(App.java:33)

Caused by: org.hibernate.HibernateException: Unable to instantiate specified TransactionFactory class [org.transaction.JDBCTransactionFactory]

at org.hibernate.engine.transaction.internal.TransactionFactoryInitiator.initiateService(TransactionFactoryInitiator.java:80)

at org.hibernate.ogm.transaction.impl.OgmTransactionFactoryInitiator.buildServiceInstance(OgmTransactionFactoryInitiator.java:61)

at org.hibernate.ogm.transaction.impl.OgmTransactionFactoryInitiator.buildServiceInstance(OgmTransactionFactoryInitiator.java:41)

at org.hibernate.ogm.service.impl.OptionalServiceInitiator.initiateService(OptionalServiceInitiator.java:37)

at org.hibernate.service.internal.StandardServiceRegistryImpl.initiateService(StandardServiceRegistryImpl.java:69)

at org.hibernate.service.internal.AbstractServiceRegistryImpl.createService(AbstractServiceRegistryImpl.java:176)

... 7 more

Caused by: org.hibernate.service.classloading.spi.ClassLoadingException: Unable to load class [org.transaction.JDBCTransactionFactory]

at org.hibernate.service.classloading.internal.ClassLoaderServiceImpl.classForName(ClassLoaderServiceImpl.java:141)

at org.hibernate.engine.transaction.internal.TransactionFactoryInitiator.initiateService(TransactionFactoryInitiator.java:77)

... 12 more

Caused by: java.lang.ClassNotFoundException: Could not load requested class : org.transaction.JDBCTransactionFactory

at org.hibernate.service.classloading.internal.ClassLoaderServiceImpl$1.findClass(ClassLoaderServiceImpl.java:99)

at java.lang.ClassLoader.loadClass(ClassLoader.java:423)

at java.lang.ClassLoader.loadClass(ClassLoader.java:356)

at java.lang.Class.forName0(Native Method)

at java.lang.Class.forName(Class.java:266)

at org.hibernate.service.classloading.internal.ClassLoaderServiceImpl.classForName(ClassLoaderServiceImpl.java:138)

... 13 more

If I do this line of code comment, I see no exceptions:

   sessionfactory=cfgogm.buildSessionFactory(serviceregistry);

it is my hibernate.cfg.xml:

<?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>

      <property name="hibernate.o"></property>

    <property name="hibernate.transaction.factory_class">org.transaction.JDBCTransactionFactory</property>

    <property name="hibernate.current_session_context_class">thread</property>

    <property name="hibernate.ogm.datastore.grid_dialect">org.hibernate.ogm.dialect.mongodb.MongoDBDialect</property>

    <property name="hibernate.ogm.datastore.provider">mongodb</property>

    <property name="hibernate.ogm.mongodb.database">rcfdb</property>

    <property name="hibernate.ogm.mongodb.host">127.0.0.1</property>

    <property name="hibernate.ogm.mongodb.port">27017</property>

    <mapping resource="hibernate-contact.hbm.xml"/>

  </session-factory>

</hibernate-configuration>

could you please explain me, why I get this problem and how can I solve this?