The Hibernate SessionFactory is used to create a HibernateTemplate as it's set. The template is
then used for any Hibernate database operations. Spring's HibernateTemplate converts all exceptions
to runtime exceptions so it isn't necessary to handle any exceptions.
The @Transactional annotation isn't used in this example because there isn't anything
configuring transactions in the Spring configuration.
Example 1. PersonDaoImpl
@Repository
@Transactional(readOnly = true)
public class PersonDaoImpl implements PersonDao {
protected HibernateTemplate template = null;
/**
* Sets Hibernate session factory.
*/
public void setSessionFactory(SessionFactory sessionFactory) {
template = new HibernateTemplate(sessionFactory);
}
/**
* Find persons.
*/
@SuppressWarnings("unchecked")
public Collection<Person> findPersons() throws DataAccessException {
return (Collection<Person>) template.find("from Person");
}
/**
* Find persons by last name.
*/
@SuppressWarnings("unchecked")
public Collection<Person> findPersonsByLastName(String lastName) throws DataAccessException {
return (Collection<Person>) template.find("from Person p where p.lastName = ?", lastName);
}
/**
* Saves person.
*/
@Transactional(readOnly = false, propagation = Propagation.REQUIRES_NEW)
public void save(Person person) {
template.saveOrUpdate(person);
}
}