spring / hibernate：每次VS getCurrentSession打开/关闭会话 [英] spring/hibernate: open/close session each time VS getCurrentSession

问题描述

这些方法之间有什么区别，哪一个更好？到目前为止，我的代码片段如下：

What are the differences between these approaches and which one is better? Until now I'm having pieces of code like the following:

public void delete(Song song) {
    session = sessionFactory.getCurrentSession();
    session.delete(song);
    session.flush();
}

但上面的代码运行时记录并不总是被删除= 1永远不会被删除，其他ID将始终被删除）。我读到，保持打开的会话加快了应用程序的速度 - 这就是为什么我共享会话对象。我的业务对象通过DI获得会话工厂：

but the record is not always deleted when above code is run (precisely: id=1 is never deleted and other ids are deleted always). I read that keeping opened session speeds up the application a little bit - that's why I'm sharing the session object. My business object get the session factory via DI:

@Autowired
private SessionFactory sessionFactory;

Session session = null;

public void setSessionFactory(SessionFactory sessionFactory) {
    this.sessionFactory = sessionFactory;
}

推荐答案

，我得出的结论是最好的策略是将Hibernate会话的生命周期与单个事务的持续时间相匹配。根据您的具体需求，您可能还需要做其他事情，但我敢打赌，拟议中的startegy可以在95％的实际案例中发挥作用。

Based on my expereince with Hibernate, I came to the conclusion that the best strategy is to match the Hibernate session life span with the duration of a single transaction. Based on your specific needs, you might have to do something else, but I bet the proposed startegy would work in 95% of practical cases.

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