@Bean
    public EntityManagerFactory entityManagerFactory() {
        final LocalContainerEntityManagerFactoryBean entityManagerFactory = new LocalContainerEntityManagerFactoryBean();
        entityManagerFactory.setJtaDataSource(dataSource);
        entityManagerFactory.setPersistenceUnitName("SamplePersistenceUnit");
        entityManagerFactory.setPackagesToScan(new String[] { "com.sample" });
        entityManagerFactory.setJpaVendorAdapter(jpaVendorAdaper());
        entityManagerFactory.setJpaPropertyMap(additionalProperties());
        entityManagerFactory.setValidationMode(ValidationMode.NONE);
        entityManagerFactory.setSharedCacheMode(SharedCacheMode.DISABLE_SELECTIVE);
        ClasspathScanningPersistenceUnitPostProcessor hbmScanner = new ClasspathScanningPersistenceUnitPostProcessor("com.sample");
        hbmScanner.setMappingFileNamePattern("**/*hbm.xml");
        entityManagerFactory.setPersistenceUnitPostProcessors(hbmScanner);
        entityManagerFactory.afterPropertiesSet();
        return entityManagerFactory.getObject();
    }