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README.md

MiniDao

当前最新版本: 1.9.0 (发布日期:20220902)

反馈问题:发现bug请在github 发issue

MiniDao 简介及特征

An powerful enhanced toolkit of SpringJdbc for simplify development

MiniDao 是一款轻量级JAVA持久层框架,基于 SpringJdbc + freemarker 实现,具备Mybatis一样的SQL分离和逻辑标签能力。Minidao产生的初衷是为了解决Hibernate项目,在复杂SQL具备Mybatis一样的灵活能力,同时支持事务同步。

具有以下特征:

  • O/R mapping不用设置xml,零配置便于维护
  • 不需要了解JDBC的知识
  • SQL语句和java代码的分离
  • 只需接口定义,无需接口实现
  • SQL支持脚本语言(强大脚本语言,freemarker语法)
  • 支持与hibernate轻量级无缝集成
  • 支持自动事务处理和手动事务处理
  • 性能优于Mybatis
  • 比Mybatis更简单易用
  • SQL 支持注解方式
  • SQL 支持独立文件方式,SQL文件的命名规则: 类名_方法名; SQL文件更容易定位,方便后期维护,项目越大此优势越明显
  • SQL标签采用Freemarker的基本语法

如何快速集成minidao?

<dependency>
  <groupId>org.jeecgframework</groupId>
  <artifactId>minidao-pe</artifactId>
  <version>1.9.0</version>
</dependency>

技术交流

项目介绍

项目名 中文名 备注
minidao-pe-framework 架构核心包
minidao-code-generate 代码快速生成
minidao-pe-spring-boot-starter spring-boot2 starter
minidao-pe-example 示例代码

支持28种数据库

数据库 支持
MySQL
Oracle、Oracle9i
SqlServer、SqlServer2012
PostgreSQL
DB2、Informix
MariaDB
SQLite、Hsqldb、Derby、H2
达梦、人大金仓、神通
华为高斯、虚谷、瀚高数据库
阿里云PolarDB、PPAS、HerdDB
Hive、HBase、CouchBase

代码体验

1. 接口定义[EmployeeDao.java]

@MiniDao
public interface EmployeeDao {

 @Arguments({ "employee"})
 @Sql("select * from employee")
 List<Map<String,Object>> getAll(Employee employee);

 @Sql("select * from employee where id = :id")
 Employee get(@Param("id") String id);

 @Sql("select * from employee where empno = :empno and  name = :name")
 Map getMap(@Param("empno")String empno,@Param("name")String name);

 @Sql("SELECT count(*) FROM employee")
 Integer getCount();

 int update(@Param("employee") Employee employee);

 void insert(@Param("employee") Employee employee);
 
 @ResultType(Employee.class)
 public MiniDaoPage<Employee> getAll(@Param("employee") Employee employee,@Param("page")  int page,@Param("rows") int rows);

}

2. SQL文件[EmployeeDao_getAllEmployees.sql]

SELECT * FROM employee where 1=1 
<#if employee.age ?exists>
and age = :employee.age
</#if>
<#if employee.name ?exists>
and name = :employee.name
</#if>
<#if employee.empno ?exists>
and empno = :employee.empno
</#if>

3. 接口和SQL文件对应目录

github

4. 测试代码

public class Client {
public static void main(String args[]) {
	BeanFactory factory = new ClassPathXmlApplicationContext("applicationContext.xml");
 		
	EmployeeDao employeeDao = (EmployeeDao) factory.getBean("employeeDao");
	Employee employee = new Employee();
	String id = UUID.randomUUID().toString().replaceAll("-", "").toUpperCase();
	employee.setId(id);
	employee.setEmpno("A001");
	employee.setSalary(new BigDecimal(5000));
	employee.setBirthday(new Date());
	employee.setName("scott");
	employee.setAge(25);
	//调用minidao方法插入
	employeeDao.insert(employee);
}
}

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