Using SqlSession in MyBatis

Question

I am sort of beginner in MyBatis, and I was going through below link of their documentation:
MyBatis Getting Started

What it suggest is:

Each thread should have its own instance of SqlSession. Instances of SqlSession are not to be shared and are not thread safe.

From above line what I understood is, we should use it in this way:

SqlSession session = // getting one instance of SqlSession as suggested in above link  
List<Integer> result = session.selectList("getUsersId");
session.close();

So similarly where ever required, I need to create new SqlSession each time and close them. is there any better way to use it ? From better way I mean a better way to write code, pattern which should create SqlSession for me and close it automatically.
(I am using Vaadin and MyBatis.)

score 0 · Answer 1 · answered Nov 04 '19 at 07:50

0

SqlSession lifetime scope is method or Http request. So if method is return or request completed, it will be close auto.

answered Nov 04 '19 at 07:50

君主不是你

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19

score 0 · Answer 2 · answered May 09 '20 at 08:02

SqlSession is AutoCloseable

When you use it try-with-resource, Autocloseable class invoke default close method

The correct pattern would be

try (SqlSession session = // getting one instance of SqlSession as suggested in above link) {
    List<Integer> result = session.selectList("getUsersId");
}

score -1 · Answer 3 · edited May 23 '17 at 12:01

-1

Use ThreadLocal. With such an approach each thread will have its own SqlSession. Note that thread should cleanup after itself so closing an opened sql session should be a part of it.

Using SqlSession in MyBatis

3 Answers3