1. 1. MyBatis Web Application LINE Corp. Service Dev. 1Tokuhiro Matsuno
2. 2. LINE Corp Service Dev.1 B2C MyBatis
3. 3. MyBatis? for Java
4. 4. SQL interface java.lang.reect.Proxy Bean Mapping
5. 5. MyBatis DB
6. 6. DB
7. 7.
8. 8. N+1 )
9. 9. 3 Mapper XML: XML Annotation: Statement builder: Java DSL
10. 10. 1. Mapper XML
11. 11. -parameters @Param
12. 12. Java8 -parameters
13. 13. Usage String resource = "mybatis-cong.xml";InputStream inputStream = Resources.getResourceAsStream(resource);SqlSessionFactory sqlSessionFactory = new SqlSessionFactoryBuilder().build(inputStream);
14. 14. try (SqlSession session = sqlSessionFactory.openSession()) {BlogMapper mapper = session.getMapper(BlogMapper.class);Blog blog = mapper.ndById(101);System.out.println(blog);}
15. 15. 2. Annotation
16. 16.
17. 17. 3. Statement builder
18. 18. LINE 27% 73% XML Annotation Statement builder
19. 19. @Select("SELECT *" + " FROM blog" + " id=#{id}") Blog findById(long id);
20. 20. Annotation 1% 4% 95% Java Kotlin Groovy
21. 21. Kotlin fun findById(id: Long): List Groovy Blog findById(long id) Java Blog findById(long id);
22. 22. LINE Mapper XML Annotation Groovy or kotlin Statement builder
23. 23. Spring support Spring boot
24. 24. MyBatis SQL
25. 25. MyBatis (2)
26. 26. MyBatis (3)
27. 27. MyBatis (4) Debugger
28. 28. MyBatis XML, Statement builder, Annotation Annotation XML