fastclassbyspringcglib.invoke,fastmybatis 2.8.1 发布,本次更新内如下:
- 新增JPA Query Method查询
原理:根据方法名称中的关键字自动推导出SQL语
目前实现了大部分功能,参考: JPA Query Method 除了Distinct不支持,其它已全部支持
在Mapper中定义一个方法,以 findBy 开头
/** * … where x.lastname = ?1 and x.firstname = ?2 * @param lastname * @param firstname * @return */ List<Student> findByLastnameAndFirstname(String lastname, String firstname);
使用:
@Test public void findByLastnameAndFirstname() { List<Student> users = mapper.findByLastnameAndFirstname("张", "三"); Assert.assertEquals(1, users.size()); users.forEach(System.out::println); }
And | findByLastnameAndFirstname | … where x.lastname = ?1 and x.firstname = ?2 |
Or | findByLastnameOrFirstname | … where x.lastname = ?1 or x.firstname = ?2 |
Is, Equals | findByFirstname,findByFirstnameIs,findByFirstnameEquals | … where x.firstname = ?1 |
Between | findByStartDateBetween | … where x.startDate between ?1 and ?2 |
LessThan | findByAgeLessThan | … where x.age < ?1 |
LessThanEqual | findByAgeLessThanEqual | … where x.age <= ?1 |
GreaterThan | findByAgeGreaterThan | … where x.age > ?1 |
GreaterThanEqual | findByAgeGreaterThanEqual | … where x.age >= ?1 |
After | findByStartDateAfter | … where x.startDate > ?1 |
Before | findByStartDateBefore | … where x.startDate < ?1 |
IsNull, Null | findByAge(Is)Null | … where x.age is null |
IsNotNull, NotNull | findByAge(Is)NotNull | … where x.age not null |
Like | findByFirstnameLike | … where x.firstname like '%?1%' |
NotLike | findByFirstnameNotLike | … where x.firstname not like '%?1%' |
StartingWith | findByFirstnameStartingWith | … where x.firstname like '?1%' |
EndingWith | findByFirstnameEndingWith | … where x.firstname like '%?1' |
Containing | findByFirstnameContaining | … where x.firstname like '%?1%' |
OrderBy | findByAgeOrderByLastnameDesc | … where x.age = ?1 order by x.lastname desc |
Not | findByLastnameNot | … where x.lastname <> ?1 |
In | findByAgeIn(Collection<Age> ages) | … where x.age in ?1 |
NotIn | findByAgeNotIn(Collection<Age> ages) | … where x.age not in ?1 |
True | findByActiveTrue() | … where x.active = true |
False | findByActiveFalse() | … where x.active = false |
IgnoreCase | findByFirstnameIgnoreCase | … where UPPER(x.firstname) = UPPER(?1) |
完整测试用例:
/** * 演示JPA findBy查询,根据方法名称自动生成查询语句,无需编写SQL * @author tanghc */ public interface StudentMapper extends CrudMapper<Student, Integer> { /** * … where x.lastname = ?1 and x.firstname = ?2 * @param lastname * @param firstname * @return */ List<Student> findByLastnameAndFirstname(String lastname, String firstname); /** * * … where x.lastname = ?1 or x.firstname = ?2 * @param lastname * @param firstname * @return */ List<Student> findByLastnameOrFirstname(String lastname, String firstname); /** * where x.firstname = ? * @param firstname * @return */ List<Student> findByFirstname(String firstname); List<Student> findByFirstnameIs(String firstname); List<Student> findByFirstnameEquals(String firstname); /** * … where x.startDate between ?1 and ?2 * @param begin * @param end * @return */ List<Student> findByStartDateBetween(Date begin, Date end); /** * … where x.age < ?1 * @param age * @return */ List<Student> findByAgeLessThan(int age); /** * … where x.age <= ?1 * @param age * @return */ List<Student> findByAgeLessThanEqual(int age); /** * … where x.age > ?1 * @param age * @return */ List<Student> findByAgeGreaterThan(int age); /** * … where x.age >= ?1 * @param age * @return */ List<Student> findByAgeGreaterThanEqual(int age); /** * … where x.startDate > ?1 * @param date * @return */ List<Student> findByStartDateAfter(Date date); /** * … where x.startDate < ?1 * @param date * @return */ List<Student> findByStartDateBefore(Date date); /** * … where x.age is null * @return */ List<Student> findByAgeNull(); List<Student> findByAgeIsNull(); /** * … where x.firstname like ?1 * @param firstname * @return * @see #findByFirstnameContaining(String) */ List<Student> findByFirstnameLike(String firstname); /** * … where x.firstname not like ?1 * @param firstname * @return */ List<Student> findByFirstnameNotLike(String firstname); /** * … where x.firstname like 'xx%' * @param firstname * @return */ List<Student> findByFirstnameStartingWith(String firstname); /** * … where x.firstname like '%xx' * @param firstname * @return */ List<Student> findByFirstnameEndingWith(String firstname); /** * 等同于like * … where x.firstname like '%xx%' * @param firstname * @return */ List<Student> findByFirstnameContaining(String firstname); /** * … where x.age = ?1 order by x.lastname desc * @param age * @return */ List<Student> findByAgeOrderByLastnameDesc(int age); /** * … where x.lastname <> ?1 * @param lastname * @return */ List<Student> findByLastnameNot(String lastname); /** * … where x.age in ?1 * * @param ages * @return */ List<Student> findByAgeIn(Collection<Integer> ages); /** * … where x.age not in ?1 * * @param ages * @return */ List<Student> findByAgeNotIn(Collection<Integer> ages); List<Student> findByAgeNotInAndIdIn(Collection<Integer> ages, List<Integer> ids); /** * … where x.active = 1 * @return */ List<Student> findByActiveTrue(); /** * … where x.active = 0 * @return */ List<Student> findByActiveFalse(); /** * … where UPPER(x.firstname) = UPPER(?1) * @param firstname * @return */ List<Student> findByFirstnameIgnoreCase(String firstname); // 复杂的例子 List<Student> findByLastnameOrFirstnameAndIdBetweenOrderByAgeDescIdAsc(String lastname, String firstname, int id1, int id2); }
JPA查询使用注意事项:
- 方法名称必须findBy开头
- 数据库字段名必须遵从下划线模式,如:name, add_time,驼峰命名方式不支持JPA查询
关于fastmybatis
fastmybatis是一个mybatis开发框架,其宗旨为:简单、快速、有效。
- 零配置快速上手,无需依赖Spring
- 无需编写xml文件即可完成增删改查操作,支持LambdaQuery查询、支持JPA Query Method查询(findByXxx)
- 支持mysql、sqlserver、oracle、postgresql、sqlite、StarRocks(原DorisDB)
- 支持自定义sql,对于基本的增删改查不需要写SQL,对于其它特殊SQL(如统计SQL)可写在xml中
- 支持与spring-boot集成,依赖starter即可,支持Springboot3.0
- 支持插件编写
- 支持ActiveRecord模式
- 支持多租户
- 提供通用Service
- API丰富,多达40+方法,满足日常开发需求
- 轻量级,无侵入性,是官方mybatis的一种扩展
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编程笔记 » fastclassbyspringcglib.invoke,fastmybatis 2.8.1 发布,支持JPA Query Method查询