Hibernate is a JDBC-based database persistence framework. A Hibernate application's Java to SQL mappings are defined in the org.hibernate.cfg.Configuration object. The mappings are compiled from XML mapping files. A XML mapping file is added to a Configuration object as follows:
Configuration cfg = new Configuration().addResource("Catalog.hbm.xml");
Hibernate configuration properties, which include JDBC properties, are set using one of the following methods:
1. Set the configuration properties using
setProperties()method of theConfigurationobject.2. Specify the configuration properties in the
hibernate.propertiesfile.3. Specify the properties as System properties.
4. Specify the properties in the
hibernate.cfg.xmlfile.
A SessionFactory is used to create and pool connections. A SessionFactory is created from a Configuration object as follows:
SessionFactory sessionFactory = cfg.buildSessionFactory();
When a Session object is created a JDBC connection is obtained from the...