Posted on 2011-11-22 09:24
陈小东 阅读(783)
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实体更新
Transaction trans=session.beginTransaction();
String hql=”update User user set user.age=20 where user.age=18”;
Query queryupdate=session.createQuery(hql);
int ret=queryupdate.executeUpdate();
trans.commit();
实体删除
Transaction trans=session.beginTransaction();
String hql=”delete from User user where user.age=18”;
Query queryupdate=session.createQuery(hql);
int ret=queryupdate.executeUpdate();
trans.commit();
属性查询
List list=session.createQuery(“select user.name from User user ”).list();
for(int i=0){ System.out.println(list.get(i)); }
一次检索多个属性,如下面程序:
List list=session.createQuery(“select user.name,user.age from User user ”).list(); for(int i=0;i<list.length();i++){ Object[] obj=(Object[])list.get(i); System.out.println(obj[0]); System.out.println(obj[1]); }