Question

我正在阅读hibernate教程，并在博客中找到了一些示例。我试着理解下面的代码，请帮我以下代码...

Criteria criteria = session.createCriteria(Club.class,"club")
    .createAlias("club.team","team")
    .add(Restrictions.eq("club.name", "Arsenal"))
    .add(Restrictions.eq("team.teamname", "Team A"));
    List list = criteria.list();

原始SQL查询看起来..

select club.clubid, club.name, team.clubid, team.teamid, team.teamname
from Club club, Team team
where club.clubid=team.clubid and
club.name='Arsenal'
and team.teamname='Team A';

我的问题是：

Criteria criteria = session.createCriteria(Club.class,"club")   -   Alias for Entity
        .createAlias("club.team","team")                        -   ? 
        .add(Restrictions.eq("club.name", "Arsenal"))           -   name="Arsenal"
        .add(Restrictions.eq("team.teamname", "Team A"));       -   teamname="Team A"

二线代码发生了什么？请指教..

两个表上的Hibernate标准 - 澄清

0 个答案: