Hibernate3 批量更新/删除

Hibernate3 对批量更新和批量删除提供了支持，能够直接执行批量更新或批量删除语句，无需把被更新或删除的对象先加载到内存中。

以下是通过Hibernate3 执行批量更新的程序代码：
Session session = sessionFactory.openSession();  
Transaction tx = session.beginTransaction();  
String hqlUpdate = "update Customer set name = :newName where name = :oldName";  
int updatedEntities = s.createQuery( hqlUpdate )  
.setString( "newName", newName )  
.setString( "oldName", oldName )  
.executeUpdate();  
tx.commit();  
session.close();  

以下是通过Hibernate3.0执行批量删除的程序代码：
Session session = sessionFactory.openSession();  
Transaction tx = session.beginTransaction();  
String hqlDelete = "delete Customer where name = :oldName";  
int deletedEntities = s.createQuery( hqlDelete )  
.setString( "oldName", oldName )  
.executeUpdate();  
tx.commit();  
session.close();