Hibernate查询小结

1 单个对象

a)

Query query=session.createQuery("from ConsortBean a where a.person.id=?"); 
    query.setString(0,pb.getId());//参数从零开始 
    List list=query.list(); 

b)

Query query=session.createQuery("from ConsortBean a where a.person.id=:id"); 
    query.setString("id",pb.getId()); 
   List list=query.list(); 

c)

List list =session.find( 
 "from ConsortBean a where a.person.id=?", 
 pb.getId(), 
 Hibernate.STRING);

2 分页

int pagecount = 10;//每页数量 

q = session.createQuery( 
"from FootPayRequestBean as fprb where fprb.state=? order by fprb.contractID"); 
q.setString(0, type); 

q.setFirstResult(page * pagecount);//page从0开始 
q.setMaxResults(pagecount); 
l = q.list(); 

　

3 求count()

((Integer) session.iterate("select count(*) from ConsortBean").next() ).intValue();

4 联合查询

Query query=session.createQuery("select a from ConsortBean a,PersonBean b where a.person.id=b.id and b.name like ?");//对象别名 
query.setString(0,"%管%"); 
List list=query.list();