Sample Code

You can check out sample code from the MyBatis repository on Github.

• Java code
• Config files

Any of the samples can be run with JUnit 4.

The sample code shows a typical design where a transactional service gets domain objects from a data access layer.

The service is composed by an interface FooService.java and an implementation FooServiceImpl.java. This service is transactional so a transaction is started when its method is called and commited when the method ends without throwing a unchecked exception.

public class FooServiceMapperImpl implements FooService {

    @Inject
    private UserMapper userMapper;

    @Transactional
    public User doSomeBusinessStuff(String userId) {
        return this.userMapper.getUser(userId);
    }

}

This service calls a data access layer built with MyBatis. This layer is composed by a MyBatis mapper interface UserMapper.java and a DAO composed by its interface UserDao.java and its implementation UserDaoImpl.java

The database access layer has been implemented using a mapper and a Dao that internally uses a SqlSession.

Please have a look and run the sample code to see MyBatis-Guice in action.