hibernate通用方法

 hibernate通用方法
1.insert方法
public void insert(Object o)
2.delete方法
public void delete(Object o,Serializable id)
3.update方法
public void update(Object o,Serializable id)
4.基于HQL的通用select方法
public ArrayList select(String sql)
5.基于SQL的通用select方法
public ArrayList select(String sql) throws Exception

 

详细代码如下：

insert方法
public void insert(Object o){
    Session session = HibernateSessionFactory.currentSession();
    Transaction t = session.beginTransaction();
    session.save(o);
    t.commit();
    HibernateSessionFactory.clossSession();
}
 
delete方法
public void delete(Object o,Serializable id){
    Session session = HibernateSessionFactory.currentSession():
    Transaction t = session.beginTransaction();
    Object o = session.get(o.class,id);
    if(o!=null){
        session.delete(o);
    }
    t.commit();
    HibernateSessionFactory.clossSession();
}
 
update方法
public void update(Object o,Serializable id){
    Session session = HibernateSessionFactory.currentSession();
    Transaction t = session.beginTransaction();
    session.update(o,id);
    t.commit();
    HibernateSessionFactory.clossSession();
}
 
基于HQL的通用select方法
public ArrayList select(String sql){
    Session session = HibernateSessionFactory.currentSession();
    Query query = createQuery(sql);
    List list = query.list();
    HibernateSessionFactory.clossSession();
    return (ArrayList)list;
}
 
基于SQL的通用select方法
public ArrayList select(String sql) throws Exception{
    Session session = HibernateSessionFactory.currentSession();
    Connection con = session.connection();
    PreparedStatement pstmt = con.preparedStatement(sql);
    ResultSet rs = pstmt.executeQuery();
    ResultSetMetaData rsmd = rs.getMetaData();
    Hashtable ht = null;
    ArrayList array = new ArrayList();
    while(rs.next()){
        ht = new Hashtable();
        for(int i=0;i<rsmd.getColumnCount();i++){
            ht.put(rsmd.getColumnName(i+1),rs.getObject(i+1));
        }
        array.add(ht);
    }
    HibernateSessionFactory.clossSession();
    return array;
}