hibernate 多对多关系详解(包括中间表，一对多字表)

核心提示：.uniqueResult(); // Eager fetch the collection so we can use it detached /*Event anEvent = (Event) session.load(Event.class, eventId);*/// If we want to handle

.uniqueResult(); // Eager fetch the collection so we can use it detached

 

　　　　/*

　　　　Event anEvent = (Event) session.load(Event.class, eventId);

　　　　*/

　　　　// If we want to handle it bidirectional and detached, we also need to load this

　　　　// collection with an eager outer-join fetch, this time with Criteria and not HQL:

　　　 

　　　　Event anEvent = (Event) session

　　　　　　　　.createCriteria(Event.class).setFetchMode("participants", FetchMode.JOIN)

　　　　　　　　.add( Expression.eq("id", eventId) )