package cn.csdn.hibernate.test;


import org.hibernate.Session;
import org.hibernate.Transaction;


import cn.csdn.hibernate.utils.HibernateUtil;


public class UpdateUtil {


public UpdateUtil(){


}
//添加操作
public static void add(Object obj){
Session session=null;
Transaction tx=null;
try{
session = HibernateUtil.getSession();
// 开启事物
tx = session.beginTransaction();

session.save(obj);
tx.commit();// 提交事物
}finally{
if(session!=null)
session.close();
}
}
//查询操作
public static Object get(Class clazz,int id){
Session session=null;
try{
session = HibernateUtil.getSession();
Object obj = session.get(clazz, id);
return obj;

}finally{
if(session!=null)
session.close();
}
}
//刪除操作
public static void delete(Object obj){
Session session=null;
Transaction tx=null;
try{
session = HibernateUtil.getSession();
// 开启事物
tx = session.beginTransaction();

session.delete(obj);
tx.commit();// 提交事物
}finally{
if(session!=null)
session.close();
}
}
//更新操作
public static void update(Object obj){
Session session=null;
Transaction tx=null;
try{
session = HibernateUtil.getSession();
// 开启事物
tx = session.beginTransaction();

/*脱管时执行更新,不脱管时自动更新*/
session.update(obj);
tx.commit();// 提交事物
}finally{
if(session!=null)
session.close();
}
}
}