hql 多表查询

String sql = "select test1,test2 from Test1 test1,Test2 test2";
List list =  session.find(sql);
for(int i=0;i<list.size();i++)
{
    Object[] obj = (Object[])list.get(i);
    Test1 t1 = (Test1)obj[0];
    Test2 t2 = (Test2)obj[1];
}