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https://github.com/taketoday/today-jdbc
😜 TODAY Jdbc
https://github.com/taketoday/today-jdbc
high-performance java jdbc lightweight orm orm-framework
Last synced: 26 days ago
JSON representation
😜 TODAY Jdbc
- Host: GitHub
- URL: https://github.com/taketoday/today-jdbc
- Owner: TAKETODAY
- License: gpl-3.0
- Created: 2019-08-19T13:28:54.000Z (about 5 years ago)
- Default Branch: master
- Last Pushed: 2021-08-16T15:08:52.000Z (about 3 years ago)
- Last Synced: 2024-10-03T10:49:09.846Z (about 1 month ago)
- Topics: high-performance, java, jdbc, lightweight, orm, orm-framework
- Language: Java
- Homepage: https://taketoday.cn
- Size: 803 KB
- Stars: 5
- Watchers: 1
- Forks: 0
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
- Changelog: CHANGELOG.md
- License: LICENSE
Awesome Lists containing this project
README
# TODAY JDBC
[Sql2o](https://github.com/aaberg/sql2o) 改良版
[](./LICENSE)
[](https://github.com/TAKETODAY)
[](https://www.codacy.com/gh/TAKETODAY/today-jdbc/dashboard?utm_source=github.com&utm_medium=referral&utm_content=TAKETODAY/today-jdbc&utm_campaign=Badge_Grade)
[](https://github.com/TAKETODAY/today-jdbc/actions)
## 🛠️ 安装
```xml
cn.taketoday
today-jdbc
1.0.0.RELEASE
```
#### 使用实例
```java
@Test
public void testFetch() {
createAndFillUserTable();
try (JdbcConnection con = jdbcOperations.open()) {
Date before = new Date();
List allUsers = con.createQuery("select * from User").fetch(User.class);
assertNotNull(allUsers);
Date after = new Date();
long span = after.getTime() - before.getTime();
System.out.println(String.format("Fetched %s user: %s ms", insertIntoUsers, span));
// repeat this
before = new Date();
allUsers = con.createQuery("select * from User").fetch(User.class);
after = new Date();
span = after.getTime() - before.getTime();
System.out.println(String.format("Again Fetched %s user: %s ms", insertIntoUsers, span));
assertEquals(allUsers.size(), insertIntoUsers);
}
deleteUserTable();
}
@Test
public void testBatch() {
jdbcOperations.createQuery(
"create table User(\n" +
"id int identity primary key,\n" +
"name varchar(20),\n" +
"email varchar(255),\n" +
"text varchar(100))").executeUpdate();
String insQuery = "insert into User(name, email, text) values (:name, :email, :text)";
JdbcConnection con = jdbcOperations.beginTransaction();
int[] inserted = con.createQuery(insQuery)
.addParameter("name", "test")
.addParameter("email", "[email protected]")
.addParameter("text", "something exciting")
.addToBatch()
.addParameter("name", "test2")
.addParameter("email", "[email protected]")
.addParameter("text", "something exciting too")
.addToBatch()
.addParameter("name", "test3")
.addParameter("email", "[email protected]")
.addParameter("text", "blablabla")
.addToBatch()
.executeBatch()
.getBatchResult();
con.commit();
assertEquals(3, inserted.length);
for (int i : inserted) {
assertEquals(1, i);
}
deleteUserTable();
}
```
#### Performance of SELECT
Execute 5000 SELECT statements against a DB and map the data returned to a POJO.
Code is available [here](/src/test/java/cn/taketoday/jdbc/performance/PojoPerformanceTest.java).
Method | Duration |
------------------------------------------------------------------- | ---------------------- |
Hand coded ResultSet | 49ms |
TODAY JDBC | 59ms (20.41% slower) |
[Sql2o](https://github.com/aaberg/sql2o) | 65ms (32.65% slower) |
[Apache DbUtils](http://commons.apache.org/proper/commons-dbutils/) | 107ms (118.37% slower) |
[MyBatis](http://mybatis.github.io/mybatis-3/) | 245ms (400.00% slower) |
[JDBI](http://jdbi.org/) | 273ms (457.14% slower) |
[Hibernate](http://hibernate.org/) | 280ms (471.43% slower) |
[Spring JdbcTemplate](http://docs.spring.io/spring/docs/current/spring-framework-reference/html/jdbc.html) | 342ms (597.96% slower) |
[jOOQ](http://www.jooq.org) | 374ms (663.27% slower) |
## 🙏 鸣谢
本项目的诞生离不开以下开源项目：
* [TODAY Context](https://github.com/TAKETODAY/today-context): A Java library for dependency injection and aspect oriented programing
* [Sql2o](https://github.com/aaberg/sql2o): sql2o is a small library, which makes it easy to convert the result of your sql-statements into objects. No resultset hacking required. Kind of like an orm, but without the sql-generation capabilities. Supports named parameters.
## 📄 开源协议
请查看 [GNU GENERAL PUBLIC LICENSE](https://github.com/TAKETODAY/today-jdbc/blob/master/LICENSE)