HibernateDaoSupport的源码

         package org.springframework.orm.hibernate3.support;
 
 import org.hibernate.HibernateException;
 import org.hibernate.Session;
 import org.hibernate.SessionFactory;
 
 import org.springframework.dao.DataAccessException;
 import org.springframework.dao.DataAccessResourceFailureException;
 import org.springframework.dao.support.DaoSupport;
 import org.springframework.orm.hibernate3.HibernateTemplate;
 import org.springframework.orm.hibernate3.SessionFactoryUtils;
 
 
 public abstract class HibernateDaoSupport extends DaoSupport {
 
     private HibernateTemplate hibernateTemplate;
 
 
     public final void setSessionFactory(SessionFactory sessionFactory) {
       this.hibernateTemplate = createHibernateTemplate(sessionFactory);
     }
 
   
     protected HibernateTemplate createHibernateTemplate(SessionFactory sessionFactory) {
         return new HibernateTemplate(sessionFactory);
     }
 
     public final SessionFactory getSessionFactory() {
         return (this.hibernateTemplate != null ? this.hibernateTemplate.getSessionFactory() : null);
     }
 
   
     public final void setHibernateTemplate(HibernateTemplate hibernateTemplate) {
         this.hibernateTemplate = hibernateTemplate;
     }
 
    
     public final HibernateTemplate getHibernateTemplate() {
       return this.hibernateTemplate;
     }
 
     protected final void checkDaoConfig() {
         if (this.hibernateTemplate == null) {
             throw new IllegalArgumentException("'sessionFactory' or 'hibernateTemplate' is required");
         }
     }
 
 
     protected final Session getSession()
         throws DataAccessResourceFailureException, IllegalStateException {
 
         return getSession(this.hibernateTemplate.isAllowCreate());
     }
 
     protected final Session getSession(boolean allowCreate)
         throws DataAccessResourceFailureException, IllegalStateException {
 
         return (!allowCreate ?
             SessionFactoryUtils.getSession(getSessionFactory(), false) :
                 SessionFactoryUtils.getSession(
                         getSessionFactory(),
                         this.hibernateTemplate.getEntityInterceptor(),
                         this.hibernateTemplate.getJdbcExceptionTranslator()));
     }
 
   
     protected final DataAccessException convertHibernateAccessException(HibernateException ex) {
         return this.hibernateTemplate.convertHibernateAccessException(ex);
     }
 
     protected final void releaseSession(Session session) {
         SessionFactoryUtils.releaseSession(session, getSessionFactory());
     }
 
 }