https://github.com/openingo/jdkits

Java Develop Common Kits
https://github.com/openingo/jdkits

jdk kits

Last synced: about 1 month ago
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Java Develop Common Kits

• Host: GitHub
• URL: https://github.com/openingo/jdkits
• Owner: openingo
• License: other
• Created: 2020-05-15T06:33:29.000Z (over 4 years ago)
• Default Branch: master
• Last Pushed: 2022-11-16T01:27:00.000Z (about 2 years ago)
• Last Synced: 2024-10-12T15:42:07.062Z (about 1 month ago)
• Topics: jdk, kits
• Language: Java
• Size: 315 KB
• Stars: 2
• Watchers: 1
• Forks: 0
• Open Issues: 3
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

        
# jdkits

Java Develop Common Kits

![maven](https://img.shields.io/maven-central/v/org.openingo.kits/jdkits.svg)

```xml

  org.openingo.kits

  jdkits

  new_version

```

### DDLKit使用

> 默认使用InnoDB

##### 创建一个VARCHAR Column

```java

DDLKit.createColumn("name", DDLKit.VARCHAR, "名字", 20, "");

```

也可以这样

```java

DDLKit.createVarcharColumn("name", "名字", 20, "");

```

##### 创建一个INT Column

```java

DDLKit.createIntColumn("age", "年龄", 4, 1);

```

##### 创建有符号的 INT Column

```java

DDLKit.createSignedIntColumn("age", "年龄", 4, 1);

```

##### 修改DDL charset

```java

DDLKit.Table table = DDLKit.createTable("user", "用户");

table.setCharset(DDLKit.CHARSET_UTF8);

table.addColumns(columns);

String ddl = table.tableDDL();

```

> - DDLKit.CHARSET_UTF8 -> utf8

>

> - DDLKit.CHARSET_UTF8MB4 -> utf8mb4

##### 示例

```java

List columns = new ArrayList<>();

DDLKit.Column name = DDLKit.createColumn("name", DDLKit.VARCHAR, "名字", 20, "");

columns.add(name);

DDLKit.Column age = DDLKit.createSignedTinyIntColumn("age", "年龄", 4, 1);

columns.add(age);

DDLKit.Column addr = DDLKit.createColumn("addr", DDLKit.VARCHAR, "地址", 4, "");

columns.add(addr);

DDLKit.Table table = DDLKit.createTable("user", "用户");

table.setCharset(DDLKit.CHARSET_UTF8);

table.addColumns(columns);

String ddl = table.tableDDL();

```

```sql

CREATE TABLE `user` (

`id` bigint(20) unsigned NOT NULL AUTO_INCREMENT COMMENT '索引',

`name` varchar(20) DEFAULT NULL COMMENT '名字',

`age` tinyint(4) NOT NULL DEFAULT '1' COMMENT '年龄',

`addr` varchar(4) DEFAULT NULL COMMENT '地址',

PRIMARY KEY (`id`)

) ENGINE=InnoDB CHARSET=utf8 COMMENT='用户';

```