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Mybatis-Flex is an elegant Mybatis Enhancement Framework.
Features
- 1、Mybatis-Flex is very lightweight, and it only depends on Mybatis and no other third-party dependencies
- 2、Basic CRUD operator and paging query of Entity class
- 3、Row mapping support, you can add, delete, modify and query the database without entity classes
- 4、Support multiple databases, and expand through dialects flexibly.
- 5、Support combined primary keys and different primary key content generation strategies
- 6、Extremely friendly SQL query, IDE automatically prompts and no worries about mistakes
- 7、More little surprises
hello world
Entity Class
@Table("tb_account")
public class Account {
@Id()
private Long id;
private String userName;
private Date birthday;
private int sex;
//getter setter
}
AccountMapper Class
public interface AccountMapper extends BaseMapper<Account> {
//only Mapper interface define.
}
Hello world
e.g. 1： query 1 data
class HelloWorld {
public static void main(String... args) {
HikariDataSource dataSource = new HikariDataSource();
dataSource.setJdbcUrl("jdbc:mysql://127.0.0.1:3306/mybatis-flex");
dataSource.setUsername("username");
dataSource.setPassword("password");
MybatisFlexBootstrap.getInstance()
.setDatasource(dataSource)
.addMapper(AccountMapper.class)
.start();
//id=100
Account account = MybatisFlexBootstrap.getInstance()
.execute(AccountMapper.class, mapper ->
mapper.selectOneById(100)
);
}
}
e.g.2: query list
class HelloWorld {
public static void main(String... args) {
HikariDataSource dataSource = new HikariDataSource();
dataSource.setJdbcUrl("jdbc:mysql://127.0.0.1:3306/mybatis-flex");
dataSource.setUsername("username");
dataSource.setPassword("password");
MybatisFlexBootstrap.getInstance()
.setDatasource(dataSource)
.addMapper(AccountMapper.class)
.start();
//use QueryWrapper to build query conditions
QueryWrapper query = QueryWrapper.create()
.select()
.from(ACCOUNT)
.where(ACCOUNT.ID.ge(100))
.and(ACCOUNT.USER_NAME.like("zhang").or(ACCOUNT.USER_NAME.like("li")));
// execute SQL：
// ELECT * FROM `tb_account`
// WHERE `tb_account`.`id` >= 100
// AND (`tb_account`.`user_name` LIKE '%zhang%' OR `tb_account`.`user_name` LIKE '%li%' )
List<Account> accounts = MybatisFlexBootstrap.getInstance()
.execute(AccountMapper.class, mapper ->
mapper.selectListByQuery(query)
);
}
}
e.g.3: paging query
class HelloWorld {
public static void main(String... args) {
HikariDataSource dataSource = new HikariDataSource();
dataSource.setJdbcUrl("jdbc:mysql://127.0.0.1:3306/mybatis-flex");
dataSource.setUsername("username");
dataSource.setPassword("password");
MybatisFlexBootstrap.getInstance()
.setDatasource(dataSource)
.addMapper(AccountMapper.class)
.start();
//use QueryWrapper to build query conditions
QueryWrapper query = QueryWrapper.create()
.select()
.from(ACCOUNT)
.where(ACCOUNT.ID.ge(100))
.and(ACCOUNT.USER_NAME.like("张").or(ACCOUNT.USER_NAME.like("李")))
.orderBy(ACCOUNT.ID.desc());
// execute SQL：
// ELECT * FROM `tb_account`
// WHERE `tb_account`.`id` >= 100
// AND (`tb_account`.`user_name` LIKE '%张%' OR `tb_account`.`user_name` LIKE '%李%' )
// ORDER BY `tb_account`.`id` DESC
// LIMIT 40,10
Page<Account> accounts = MybatisFlexBootstrap.getInstance()
.execute(AccountMapper.class, mapper ->
mapper.paginate(5, 10, query)
);
}
}