Closing non transactional SqlSession和Releasing transactional SqlSession 的区别
时间: 2024-12-23 16:11:28 浏览: 7
"Closing non transactional SqlSession"和"Releasing transactional SqlSession"都是MyBatis框架中对SqlSession生命周期管理的描述,但它们涉及的场景和特性有所不同:
1. **Non transactional SqlSession**:非事务性的SqlSession通常用于一次性查询或者不需要事务处理的操作。当你在一个简单的查询或无事务需求的操作后,直接关闭这样的会话,不会涉及到事务的提交或回滚。这种情况下,关闭SqlSession主要是为了回收资源,比如数据库连接。
2. **Transactional SqlSession**:事务性SqlSession是在执行可能会有多个数据库操作并且需要原子性事务控制的情况下创建的。一旦开始一个事务,直到显式提交或者遇到错误并回滚,会话才会结束。关闭这样的会话时,系统会检查事务状态,如果是正常结束(没有异常),则提交事务;如果有异常,则会回滚事务。
所以,主要的区别在于事务的处理:非事务性SqlSession无需关注事务管理,而transactional SqlSession涉及到事务开启、执行和关闭的过程。在日志中看到"Releasing transactional SqlSession"时,往往意味着在处理完业务逻辑后,会话被正常关闭并可能完成了事务。
相关问题
Closing non transactional SqlSession
As an AI language model, I don't have the context about which programming language you are using for SqlSession. However, in general, it is important to always close non-transactional SqlSession objects to release resources and avoid memory leaks.
Here's an example code snippet in Java using MyBatis to close a non-transactional SqlSession:
```
SqlSession sqlSession = sqlSessionFactory.openSession();
try {
// perform database operations here...
} finally {
sqlSession.close();
}
```
In this code snippet, we open a new SqlSession using `sqlSessionFactory.openSession()` and perform the database operations inside a try block. After the execution of the try block, we call the `close()` method on the SqlSession object inside a finally block to ensure that it is closed even if there is an exception thrown.
Closing the non-transactional SqlSession in this way ensures that the resources associated with it are released properly and the connection is returned to the connection pool.
closing non transactional sqlsession
关闭非事务性 SQL Session 的方法是调用其 close() 方法。
非事务性 SQL Session 是指不参与事务管理的 SQL Session。在使用完非事务性 SQL Session 后,需要显式地调用其 close() 方法来关闭它。这样可以释放其占用的资源。
关于事务性 SqlSession 使用的管理方式会不同,一般由具体的框架管理好,不需要自己手动关闭.
阅读全文