persistenceMechanismInstaller = new InMemoryPersistenceMechanismInstaller();
} else {
persistenceMechanismInstaller = new XmlPersistenceMechanismInstaller();
}
} else {
persistenceMechanismInstaller = new SqlPersistorInstaller();
}
persistenceMechanismInstaller.setConfiguration(configuration);
final PersistenceSessionFactory persistenceSessionFactory =
persistenceMechanismInstaller.createPersistenceSessionFactory(DeploymentType.PROTOTYPE);