question: @ Bean LocalContainerEntityManagerFactoryBean entityManagerFactory ( DataSource dataSource , Environment env ) { LocalContainerEntityManagerFactoryBean entityManagerFactoryBean = new LocalContainerEntityManagerFactoryBean ( ) ; entityManagerFactoryBean . setDataSource ( dataSource ) ; entityManagerFactoryBean . setJpaVendorAdapter ( new HibernateJpaVendorAdapter ( ) ) ; entityManagerFactoryBean . setPackagesToScan ( ENTITY_PACKAGES ) ; Properties jpaProperties = new Properties ( ) ; jpaProperties . put ( PROPERTY_NAME_HIBERNATE_DIALECT , env . getRequiredProperty ( PROPERTY_NAME_HIBERNATE_DIALECT ) ) ; jpaProperties . put ( PROPERTY_NAME_HIBERNATE_HBM2DDL_AUTO , env . getRequiredProperty ( PROPERTY_NAME_HIBERNATE_HBM2DDL_AUTO ) ) ; jpaProperties . put ( PROPERTY_NAME_HIBERNATE_NAMING_STRATEGY , env . getRequiredProperty ( PROPERTY_NAME_HIBERNATE_NAMING_STRATEGY ) ) ; jpaProperties . put ( PROPERTY_NAME_HIBERNATE_SHOW_SQL , env . getRequiredProperty ( PROPERTY_NAME_HIBERNATE_SHOW_SQL ) ) ; jpaProperties . put ( PROPERTY_NAME_HIBERNATE_FORMAT_SQL , env . getRequiredProperty ( PROPERTY_NAME_HIBERNATE_FORMAT_SQL ) ) ; entityManagerFactoryBean . setJpaProperties ( jpaProperties ) ; return entityManagerFactoryBean ; }
target:  Creates the bean that creates the JPA entity manager factory.