HibernateSessionFactory 工具类

java 代码

public
 
class
 HibernateSessionFactory {
    
private
 
static
 String CONFIG_FILE_LOCATION = 
"/hibernate.cfg.xml"
;
    
private
 
static
 
final
 ThreadLocal threadLocal = 
new
 ThreadLocal();
    
private
 
static
 
final
 Configuration cfg = 
new
 Configuration();
    
private
 
static
 org.hibernate.SessionFactory sessionFactory;
    
public
 
static
 Session currentSession() 
throws
 HibernateException {
        Session session = (Session) threadLocal.get();
        
if
 (session == 
null
 || !session.isOpen()) {
            
if
 (sessionFactory == 
null
) {
                
try
 {
                    cfg.configure(CONFIG_FILE_LOCATION);
                    sessionFactory = cfg.buildSessionFactory();
                } 
catch
 (Exception e) {
System.err.println(
"%%%% Error Creating SessionFactory %%%%"
);
                    e.printStackTrace();
                }
            }
session = (sessionFactory != 
null
) ? sessionFactory.openSession(): 
null
;
            threadLocal.set(session);
        }
        
return
 session;
    }
    
public
 
static
 
void
 closeSession() 
throws
 HibernateException {
        Session session = (Session) threadLocal.get();
        threadLocal.set(
null
);
        
if
 (session != 
null
) {
            session.close();
        }
    }
    
private
 HibernateSessionFactory() {
    }
}

java 代码

public
 
class
 DAOTool {
    
public
 Object load (Object object,Integer id) {
        Session session = HibernateSessionFactory.currentSession();
        
return
 session.load(object.
class
, id);
    }
    
public
 Object get (Object object ,Integer id) {
        Session session = HibernateSessionFactory.currentSession();
        
return
 session.get(object.
class
, id);
    }
    
public
 List find(String hql) {
        Session session = HibernateSessionFactory.currentSession();
        
return
 session.createQuery(hql).list();
    }
    
public
 Serializable save (Object obj) {
        Session session = HibernateSessionFactory.currentSession();
        
return
 session.save(obj);
    }
    
public
 
void
 update(Object obj) {
        Session session = HibernateSessionFactory.currentSession();
        session.update(obj);
    }
    
public
 
void
 update(String hql, Object obj) {
        Session session = HibernateSessionFactory.currentSession();
        session.update(hql, obj);
    }
    
public
 
void
 delete(Object obj) {
        Session session = HibernateSessionFactory.currentSession();
        session.delete(obj);
    }
    
public
 
void
 delete(String hql, Object obj) {
        Session session = HibernateSessionFactory.currentSession();
        session.delete(hql, obj);
    }
}