GettingHibernateSession

• How do I get hold of the Hibernate session in my DAO?

The DAO layer has the Hibernate sessionFactory injected (made available) to it through Spring and this entry in applicationContext-hibernate.xml:

<property name="sessionFactory"><ref local="sessionFactory"/></property> 

    	Session session = SessionFactoryUtils.getSession(getSessionFactory(), false);

To get hold of the Session in the view code, you need to lookup the SessionFactory defined in the applicationContext-hibernate.xml:

    private void createApplicationContext() {
        if (ctx == null) {
            ctx =    
          WebApplicationContextUtils.getRequiredWebApplicationContext(servlet.getServletContext());
        }
    }

    public net.sf.hibernate.Session getCurrentHibernateSession() {
    	createApplicationContext();
    	
        SessionFactory sessionFactory = (SessionFactory)ctx.getBean("sessionFactory");
        SessionHolder sessionHolder = (SessionHolder)TransactionSynchronizationManager.getResource(sessionFactory);
        net.sf.hibernate.Session currentSession = null;
        Transaction currentTransaction = null;
        
        if (sessionHolder!=null) {
           currentSession = sessionHolder.getSession();
           currentTransaction = sessionHolder.getTransaction();
        }         
        return currentSession;
    }