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README
Apache-2.0

sql2o的简单封装

功能特点

轻量级,使用sql2o的api操作数据库
内置常用查询模板,快速使用
sql使用专门的资源文件维护,与代码分离
使用注解,最大化减少代码量

2019-09-14 代码生成gui

public class TestTemplate {
     @Test
     public void testGui(){
        CreateCodeUtils.main();
    
    }
}

Image text

2019-08-13 优化枚举,灵活使用

public enum TypeEnum implements IEnum<Integer> {

    TYPE1(1, "类型一"), TYPE2(2, "类型二");

    private Integer code;

    private String desc;

    TypeEnum(Integer code, String desc){
        this.code = code;
        this.desc = desc;
    }

    public String getDesc(){
        return desc;
    }


    @Override
    public Integer getSaveField() {
        return code;
    }
}

新建的枚举实现IEnum 并实现 getSaveField 方法, 该方法返回枚举在数据库中存放的属性

2019-04-23 添加自动代码生成

public class TestTemplate {

    @Test
    public void testTpy(){
        Properties p = new Properties();
        p.setProperty("jdbc.url", "jdbc:sqlite:scorpio-jdbc.db");
        p.setProperty("jdbc.username", "");
        p.setProperty("jdbc.password", "");
        p.setProperty("jdbc.driver", "org.sqlite.JDBC");
        p.setProperty("table", "resources");
        p.setProperty("pack", "com.test");
        p.setProperty("fileMapper", "/mapper");
        p.setProperty("basePath", "F:\\IdeaProjects\\easy-sql\\sql2o-core");
        p.setProperty("templatePath", "F:\\IdeaProjects\\easy-sql\\sql2o-core\\src\\main\\resources");
        CreateTemplate.init(p);
        CreateTemplate.createMapper();
        CreateTemplate.createModel();
        CreateTemplate.createService();
    }
}

2019-04-19 ActiveRecord 模式

@Data
@Table(fileMapper = "/Resources.sqlmap")
public class Resources extends BaseModel<Resources> {
    @Id
    private Integer id;
    @Column("name")
    private String name;

    private String resUrl;

    private Integer type;

    private Integer parentId;
    
    private Integer sort;
}

实体类(默认表名驼峰格式,可通过注解@Mapping table属性指定)继承BaseModel, 支持注解的注解@Table,@Id,@Column,@Transient

2018-03-13 添加多数据源支持

代码层面支持多只读数据源及多写数据源,需开启BaseUtils.getBuilder().setOPenReadyAndWrite(true), 使用public static void openOnlyReady(DataSource... dataSource)与public static void openWrite(DataSource... dataSource)分别注入数据源,在进行数据库操作时,自动通过sql语句判断读写,随机选择读或写的数据源。

2018-12-30 添加多数据源支持

配置spring boot 注解自动配置 启动类上添加@EnableSql2o 注解(spring 容器中需注入数据源)

使用方式

准备工作

1.首先将数据源注入

1.1 javaConfig方式注入数据源

    @Bean
    public Sql2o sql2o(){
        BaseUtils.getBuilder.setDebug(Boolean.valueOf(debug));
        return BaseUtils.open(dataSource());
    }

1.2 其他方式注入         

 这里留有几种方式初始化,只用在使用前调用这几个方法中一个就可以了

    BaseUtils.open(String url, String user, String password);
    BaseUtils.open(DataSource dataSource);
    BaseUtils.open(Sql2o sql2o_);

spring boot 启动类上添加@EnableSql2o 注解(需maven添加自动配置依赖)

2.编写一个mapper 使其继承BaseMapper<'对应实体'>,在类上使用@Table注解,标明其对应的数据库表,以及主键和映射实体类 例如:

    @Table(table = "m_article")
    public class AgendaMapper extends BaseMapper<Agenda> {
    
    }

在映射的实体中,使用@Id标注主键:

public class Agenda implements BaseModel {

    @Transient
    private static final long serialVersionUID = 1L;
    @Id
    private String id;
    private String title;
    private String startTime;
    private String endTime;
    private Boolean allDay;
    private String color;
    private String url;
    private Boolean editable;
    private String className;//class
    private String backgroundColor;
    private String borderColor;
    private String textColor;
    private String userId;
    private String isFinish;
    private String createTime;
}

实体映射类需要继承BaseModel, 这里的 @Transient表示不是映射字段

api调用

到此就可以使用api来操作数据了

插入数据到数据库

      AgendaMapper agendaMapper = new AgendaMapper();
      Agenda agenda = new Agenda();
      /** 设置属性省略 */
      agendaMapper.save(agenda);/** 设置有主键 */
      agendaMapper.saveIgnoreId(agenda) /** 忽略主键 自增*/
      Agenda[] agendas = new Agenda[];
      agendaMapper.save(agendas, true);/** 批量创建 */

还有其他创建方式就不列出来了

删除数据

    AgendaMapper agendaMapper = new AgendaMapper();
    Agenda agenda = new Agenda();
        /** 设置属性省略 */
    agendaMapper.removeById(id);
    agendaMapper.removeByIds(ids);
    agendaMapper.remove(new UpdateModel());/** 通过UpdateModel 构造删除条件*/

更新数据

    AgendaMapper agendaMapper = new AgendaMapper();
        /** 设置属性省略 */
    agendaMapper.update(new UpdateModel());/** 通过UpdateModel 构造更新条件*/

查询的方式比较多,可以将查询的结果封装成任意对应的对象,就不一一详说了,下面说一下模板:
模板文件以.sqlmap为后缀,默认查找路径为当前DAO类同目录,可以通过@Table注解中的fileMapper配置,可以指定一个目录,也可以指定具体的文件 如果不配置fileMapper或者指定目录,默认查找文件名为当前类名。模板以键值对的形式保存

    queryLableName = SELECT name from article_lable where id in(${lableIds});
    
    updateStatus = update m_article set is_public=${status} where a_id=#${id}#;
       
    queryCountByTitle = select count(*) from m_article a left join article_type t on a.type_id=t.id where 1=1
                     <#if title??>
                       and a.name like #%${title}%#
                    </#if>;

模板的写法可查看freemark语法(这里使用#${id}#,#包裹表示字符串),如此就可以使用Mapper调用编写的sql

    Map paramMap = new HashMap<>(); 
    paramMap.put("title", title); 
    int count = agendaMapper.count(new QueryModel().tpl("queryCount", paramMap));
    int count = agendaMapper.update(new UpdateModel().tpl("queryCount", paramMap)

这里的sql可以做缓存 只要配置BaseUtils.getBuilder().setDev(false)。dev默认为false,在开发时最好设置为true,这不会缓存sql,可随意更改sql,并立即生效。

支持表创建(该功能已取消)

如果需要在初始化的时候自动创建表,需要配置BaseUtils.getBuilder().setCreate(true),dto需要注解配置:

    @IdGenerator(value = Generator.DEFINED, idclass = MyIdFactory.class)
    private String aId;

    @Column(value = "name",type = Types.VARCHAR, length = 20,nullable = false)
    private String name;

    @Column(value = "flag",type = Types.BOOLEAN,defaultValue = "0")
    private Boolean flag;

@IdGenerator 注解中有属性 value 枚举表示生成主键的方式,枚举如下:

    public enum Generator {
    
        AUTO,UUID,DEFINED
    
    
    }

AUTO表示数据库主键自增,uuid表示生成uuid主键,defined表示自定义生成,配置definedd时,一定要配置属性idclass,表示主键生成的类,这个类继承类IdDefined,实例如下:

    public class MyIdFactory implements IdDefined {
        @Override
        public String getId() {
            return "t_option"+UUIDUtils.get();
        }
    }

@Column拥有的属性如下:

    public @interface Column {
    
        String value();
    
        int type() default Types.VARCHAR;
    
        int length() default 255;
    
        boolean nullable() default false;
    
        String describe() default "";
    
        boolean index() default false;
    
        String columnDefined() default "";
    
        String defaultValue() default "";
    
    }

其中 index 表示该列是否建立索引,columnDefined用来定义一些不好设置的数据类型如: decimal(10,2),defaultValue为默认值,如果类型为Types.BOOLEAN时,默认值用字符串"0","1"表示false与true。

注意:查询结果如果为list<map> 那么所有的表头字段均被转换为小写。

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简介

Easy to use sql2o to operate database, provide spring boot stater, This program works out of the box. 展开 收起
Java
Apache-2.0
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