ObjectiveSql
ObjectiveSQL is an ORM framework in Java based on ActiveRecord pattern, which encourages rapid development and clean, codes with the least, and convention over configuration.
Key Features
- With one annotation your
Classhas fully featured capabilities of SQL programming - Easy to relational(
has_one,has_manyandbelongs_to) query and paged query - Writing SQL expressions(
arithmetic,comparisonandlogical) using Java syntax
Why ObjectiveSQL
- If your project focuses on data analysis based on relation database, and a lot of arithmetic expressions in SQL statement. ObjectiveSQL will help you write expressions conveniently and safely using Java syntax
- If you don’t want to write Java codes of database access and various configuration files, ObjectiveSQL’s dynamic code generation will help you access the database without coding
Performance(Oracle JMH)
Installation
IntelliJ IDEA plugin installation
Preferences/Settings -> Plugins -> Search with "ObjectiveSql" in market -> Install
Maven dependencies
<!-- In standalone -->
<dependency>
<groupId>com.github.braisdom</groupId>
<artifactId>objective-sql</artifactId>
<version>1.4.6</version>
</dependency>
<!-- In Spring Boot -->
<dependency>
<groupId>com.github.braisdom</groupId>
<artifactId>objsql-springboot</artifactId>
<version>1.3.4</version>
</dependency>
Refer to the pom.xml for more configuration
Examples
ObjectiveSQL provides full example for various databases below, You can open it directly with IntelliJ IDEA as a standalone project. In fact, they are not just examples, but also unit tests of ObjectiveSQL in various databases.
If you want to run without configuration, you can try: SQLite
Others: MySQL, Oracle, MS SQL Server, PostgreSQL, Spring Boot
Simple SQL programming without coding
You define just a JavaBean with annotations ```java @DomainModel public class Member { private String no;
@Queryable
private String name;
private Integer gender;
private String mobile;
private String otherInfo;
@Relation(relationType = RelationType.HAS_MANY)
private List<Order> orders; } ```
Persistence
Member.create(newMember);
Member.create(new Member[]{newMember1, newMember2, newMember3}, false);
Member.update(1L, newMember, true);
Member.update("name = 'Smith => Jackson'", "name = ?", "Alice");
Member.destroy(1L);
Member.destroy("name = ?", "Mary");
Counting and querying
Member.countAll();
Member.count("id > ?", 1);
Member.queryByPrimaryKey(1);
Member.queryFirst("id = ?", 1);
Member.query("id > ?", 1);
Member.queryAll();
Paged querying
Page page = Page.create(0, 10);
PagedList<Member> members = Member.pagedQueryAll(page, Member.HAS_MANY_ORDERS);
Relation querying
Member.queryAll(Member.HAS_MANY_ORDERS);
Member.queryByPrimary(1, Member.HAS_MANY_ORDERS);
Member.queryByName("demo", Member.HAS_MANY_ORDERS);
...
Complex SQL programming
Order.Table orderTable = Order.asTable();
Select select = new Select();
// In ObjectiveSQL, Java operator can be overloaded
select.project(sum(orderTable.amount) / sum(orderTable.quantity) * 100)
.from(orderTable)
.where(orderTable.quantity > 30 &&
orderTable.salesAt.between("2020-10-10 00:00:00", "2020-10-30 23:59:59"))
.groupBy(orderTable.productId);
SELECT SUM(`T0`.`amount`) / SUM(`T0`.`quantity`) * 100
FROM `orders` AS `T0`
WHERE `T0`.`quantity` > 30 AND
`T0`.`sales_at` BETWEEN '2020-10-10 00:00:00' AND '2020-10-30 23:59:59')
GROUP BY `T0`.`product_id`