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README
Apache-2.0

activerecord-solon-plugin-demo

介绍

​ 基于Solon框架( https://gitee.com/noear/solon )ActiveRecord 的框架适配插件activerecord-solon-plugin的Demo。

安装教程

  1. 引入插件
<dependency>
    <groupId>io.github.gollyhu</groupId>
    <artifactId>activerecord-solon-plugin</artifactId>
    <version>xxx</version>
</dependency>

使用说明

  1. 配置示例

    demo.db1:
      schema: rock
      jdbcUrl: jdbc:mysql://localhost:3306/jfinal_demo?useSSL=false
      driverClassName: com.mysql.jdbc.Driver
      username: root
      password: password
    
    demo.db2:
      schema: rock
      jdbcUrl: jdbc:mysql://localhost:3306/jfinal_demo?useSSL=false
      driverClassName: com.mysql.jdbc.Driver
      username: root
      password: password
  2. 启动示例

    /**
     * 启动应用
     */
    public class DemoApp {
        public static void main(String[] args) {
            Solon.start(DemoApp.class, args, app -> {
                app.onEvent(ActiveRecordPlugin.class, arp -> {
                    if (Solon.cfg().isDebugMode() || Solon.cfg().isFilesMode()) {
                        arp.setDevMode(true); // 启用开发模式
                        arp.setShowSql(true); // 启用SQL输出
                    }
                });
            });
        }
    }
  3. 数据源配置示例

    /**
     * 配置数据源
     */
    @Configuration
    public class Config {
    
        @Bean // 不指定数据源名称,则采用默认数据源
        public DataSource db1(@Inject("${demo.db1}") HikariDataSource dataSource) {
            return dataSource;
        }
    
        @Bean("db2") // 指定ActiveRecord数据源名称为db2
        public DataSource db2(@Inject("${demo.db2}") HikariDataSource dataSource) {
            return dataSource;
        }
    
    }
  4. 应用示例

    @Controller
    @Mapping("/blog")
    public class BlogController {
        
        @Inject
        BlogService blogService;
    
        @Mapping("/add")
        public ModelAndView add(Context ctx) {
            return new ModelAndView("/blog/add.html");
        }
    
        @Mapping("/delete/{id}")
        public void delete(Context ctx, Integer id) {
            this.blogService.deleteById(id);
            ctx.redirect("/blog");
        }
    
        @Mapping("/edit/{id}")
        public ModelAndView edit(Context ctx, Integer id) {
            ModelAndView mav = new ModelAndView("/blog/edit.html");
            mav.put("blog", this.blogService.findById(id));
            return mav;
        }
    
        @Mapping
        public ModelAndView index(Context ctx) {
            return this.index(ctx, 1);
        }
    
        @Mapping("/{pageNumber}")
        public ModelAndView index(Context ctx, Integer pageNumber) {
            ModelAndView mav= new ModelAndView("/blog/blog.html");
            mav.put("blogPage", this.blogService.paginate(pageNumber, 10));
            return mav;
        }
    
        /**
         * save 与 update 的业务逻辑在实际应用中也应该放在 serivce 之中,
         * 并要对数据进正确性进行验证,在此仅为了偷懒
         */
        @NotEmpty({"title", "content"})
        @Mapping("/save")
        public void save(Context ctx, @Validated Blog blog) {
            this.blogService.save(blog);
            ctx.redirect("/blog");
        }
    
        /**
         * save 与 update 的业务逻辑在实际应用中也应该放在 serivce 之中,
         * 并要对数据进正确性进行验证,在此仅为了偷懒
         */
        @NotEmpty({"id", "title", "content"})
        @Mapping("/update")
        public void update(Context ctx, @Validated Blog blog) {
            this.blogService.update(blog);
            ctx.redirect("/blog");
        }
    }

代码生成

  1. 代码生成器
/**
 * 代码生成器
 */
public class _Generator {
    public static void main(String[] args) {
        // 获取数据源
        DataSource ds1 = getDataSource1();
        DataSource ds2 = getDataSource2();

        System.out.println("Start generate...\n");

        // 默认数据源
        SolonGenerator generator = new SolonGenerator(ds1, "cn.hg.solon.plugin.activerecord.demo.common");
        // 排除表
        generator.addBlacklist("blog2");
        // 指定自定义Model基类
        generator.setBaseModelClassName(BaseModel.class.getName());
        // 生成
        generator.generate();

        // ds2数据源
        SolonGenerator generator2 = new SolonGenerator(ds2, "cn.hg.solon.plugin.activerecord.demo.common");
        // 排除表
        generator2.addBlacklist("blog");
        // 非默认数据一定要指定数据源Bean名称
        generator2.setDataSourceBeanName("db2");
        // 指定自定义Model基类
        generator2.setBaseModelClassName(BaseModel.class.getName());
        // 生成
        generator2.generate();

        System.out.println("\nFinished generate.");
    }
    
    private static DataSource getDataSource1() {
        HikariCpPlugin plugin = new HikariCpPlugin("jdbc:mysql://localhost/jfinal_demo?useSSL=false", "root", "123456");
        plugin.start();
        return plugin.getDataSource();
    }

    private static DataSource getDataSource2() {
        HikariCpPlugin plugin = new HikariCpPlugin("jdbc:mysql://localhost/jfinal_demo?useSSL=false", "root", "123456");
        plugin.start();
        return plugin.getDataSource();
    }
}
  1. 代码结构

    image-20220922110620463

    image-20220922110848784

  2. 代码示例

  • Mapper

    @Namespace("BlogMapper")
    public interface BlogMapper {
    	......
    
        // isUpdate = true 表示接口为非查询接口
        @Sql(value = "{DELETE FROM `blog` WHERE `id` = #para(id)}", isUpdate = true)
        long deleteById(Object id);
        
    	......
    
        @Sql("{ SELECT * FROM `blog` }")
        List<Blog> findAll();
    
        @Sql("findBy")
        List<Blog> findBy(Blog model);
    
        @Sql("findBy")
        List<Blog> findBy(Map<String, ?> map);
    
        @Sql("findBy")
        List<Blog> findBy(Blog model, String orderColumn, String orderDirection);
    
        @Sql("findBy")
        List<Blog> findBy(Map<String, ?> map, String orderColumn, String orderDirection);
        
        ......
    }
    
    @Namespace("Blog2Mapper")
    public interface Blog2Mapper {
    	......
    
        // isUpdate = true 表示接口为非查询接口
        @Sql(value = "{DELETE FROM `blog2` WHERE `id` = #para(id)}", isUpdate = true)
        long deleteById(Object id);
        
    	......
    
        @Sql("{ SELECT * FROM `blog2` }")
        List<Blog2> findAll();
    
        @Sql("findByModel")
        List<Blog2> findBy(Blog2 model);
    
        @Sql("findByMap")
        List<Blog2> findBy(Map<String, ?> map);
    
        @Sql("findByModel")
        List<Blog2> findBy(Blog2 model, String orderColumn, String orderDirection);
    
        @Sql("findByMap")
        List<Blog2> findBy(Map<String, ?> map, String orderColumn, String orderDirection);
    
        ......
    }
  • BaseModel

    public abstract class BaseBlog<M extends BaseBlog<M>> extends Model<M> implements IBean {
        ......
    }
    
    public abstract class BaseBlog2<M extends BaseBlog2<M>> extends Model<M> implements IBean {
        ......
    }
  • Model

    @Db(DbKit.MAIN_CONFIG_NAME)
    @Table(name = "blog", primaryKey = "id")
    public class Blog extends BaseBlog<Blog> {
    	public static final Blog DAO = new Blog().dao();
    }
    
    @Db("db2") // 生成此对象时指定了数据源名称为"db2"
    @Table(name = "blog2", primaryKey = "id")
    public class Blog2 extends BaseBlog2<Blog2> {
    	public static final Blog2 DAO = new Blog2().dao();
    }
  • SQL

    BlogMapper.sql 文件
    #namespace("BlogMapper")
    
    #sql("countBy") ### 统计满足条件的记录数
        SELECT COUNT(*) FROM `blog` #@whereFor()
    #end
    
    #sql("deleteBy") ### 删除满足条件的记录
        DELETE FROM `blog` #@whereFor()
    #end
    
        ......
    
    #sql("paginateBy") ### 查找满足条件的分页记录, 并按指定条件排序
        SELECT * FROM `blog` #@whereFor()
        #if(orderColumn)ORDER BY #(orderColumn)#if(orderDirection) #(orderDirection)#end#end
    #end
    
    	.......
    
    ### ********************
    ### WHERE 条件,可在此处修改查询条件,如:`name` LIKE #para(name, "like")
    ### ********************
    #define whereFor()
    WHERE TRUE
        #if(id)AND `id` = #para(id)#end
        #if(title)AND `title` = #para(title)#end
        #if(content)AND `content` = #para(content)#end
    #end
    
    #end
    
    
    
    Blog2Mapper.sql 文件
    #namespace("Blog2Mapper")
    
    #sql("countBy") ### 统计满足条件的记录数
        SELECT COUNT(*) FROM `blog2` #@whereFor()
    #end
    
    #sql("deleteBy") ### 删除满足条件的记录
        DELETE FROM `blog2` #@whereFor()
    #end
    
        ......
    
    #sql("paginateBy") ### 查找满足条件的分页记录, 并按指定条件排序
        SELECT * FROM `blog2` #@whereFor()
        #if(orderColumn)ORDER BY #(orderColumn)#if(orderDirection) #(orderDirection)#end#end
    #end
    
        ......
        
    ### ********************
    ### WHERE 条件,可在此处修改查询条件,如:`name` LIKE #para(name, "like")
    ### ********************
    #define whereFor()
    WHERE TRUE
        #if(id)AND `id` = #para(id)#end
        #if(title)AND `title` = #para(title)#end
        #if(content)AND `content` = #para(content)#end
    #end
    
    #end
  • Service

    public interface BlogService extends BaseService<Blog> {
    
    }
    
    public interface Blog2Service extends BaseService<Blog2> {
    
    }
    
    public interface BaseService<M extends BaseModel<M>> {
        long count();
        long countBy(M model);
        long countBy(Map<?, ?> map);
        long deleteBy(M model);
        long deleteBy(Map<?, ?> map);
        boolean deleteById(Object id);
        boolean deleteByIds(Object... ids);
        List<M> findAll();
        List<M> findBy(M model);
        List<M> findBy(Map<?, ?> map);
        List<M> findBy(M model, String orderColumn, String orderDirection);
        List<M> findBy(Map<?, ?> map, String orderColumn, String orderDirection);
        M findById(Object id);
        M findFirstBy(M model);
        M findFirstBy(Map<?, ?> map);
        M findFirstBy(M model, String orderColumn, String orderDirection);
        M findFirstBy(Map<?, ?> map, String orderColumn, String orderDirection);
        Page<M> paginate(int pageNumber, int pageSize);
        Page<M> paginateBy(int pageNumber, int pageSize, M model);
        Page<M> paginateBy(int pageNumber, int pageSize, Map<?, ?> map);
        Page<M> paginateBy(int pageNumber, int pageSize, M model, String orderColumn, String orderDirection);
        Page<M> paginateBy(int pageNumber, int pageSize, Map<?, ?> map, String orderColumn, String orderDirection);
        boolean save(M model);
        long saveMore(List<M> list);
        boolean update(M model);
        long updateMore(List<M> list);
    }
  • Provider

    @Service
    public class BlogProvider extends BaseProvider<Blog> implements BlogService {
    
        public BlogProvider() {
            super(DbKit.MAIN_CONFIG_NAME, "BlogMapper");
        }
    
    }
    
    @Service
    public class Blog2Provider extends BaseProvider<Blog2> implements Blog2Service {
    
        public Blog2Provider() {
            super("db2", "Blog2Mapper");
        }
    
    }
    
    public abstract class BaseProvider<M extends BaseModel<M>> {
        // 代码太多,请参看源码
    }

应用示例

  1. Service用法(推荐)
@Controller
@Mapping("/blog")
public class BlogController {

    @Inject
    BlogService blogService;
    
    @Mapping("/findAll")
    public List<Blog> findAll(Context ctx){
        return this.blogService.findAll();
    }

    @Mapping("/findBy")
    public List<Blog> findBy(Context ctx){
        return this.blogService.findBy(ctx.paramMap(), "id", "desc");
    }

    @Mapping("/findBy")
    public List<Blog> findBy(Context ctx, Blog model){
        return this.blogService.findBy(model, "id", "desc");
    }
    
    @Mapping("/paginate")
    public Page<Blog> paginate(Context ctx, @Param(defaultValue = "1") int pageNumber, @Param(defaultValue = "10") int pageSize){
        return this.blogService.paginate(pageNumber, pageSize);
    }

    @Mapping("/paginateBy")
    public Page<Blog> paginateBy(Context ctx, @Param(defaultValue = "1") int pageNumber, @Param(defaultValue = "10") int pageSize){
        return this.blogService.paginateBy(pageNumber, pageSize, ctx.paramMap());
    }

    ......
}
2. Mapper用法
@Controller
@Mapping("/blog2")
public class Blog2Controller {

    @Db("db2")
    Blog2Mapper blog2Mapper;

    @Mapping("/count")
    public Long count() {
        return this.blog2Mapper.count();
    }
    
    ......
}

​ Mapper只是接口类,它并没有实现,本插件实现了接口与SQL模板直接打通的功能。每一个接口方法上的@Sql注解都对应Sql模板中的同名查询,也可直接通过“{ }”包裹的语句来显示指定查询。

​ Mapper最适用的场景为 复杂查询报表查询 等,测试用例中,BlogMapperTest.java(调用方) --> BlogMapper.java(接口) --> BlogMapper.sql(SQL模板)形成了一个调用链。

​ Mapper的使用做了简化,也有一些约定:

  1. @Sql中以“{ }”包裹的语句则为显示声明查询语句,不需要与SQL模板对应

    @Sql("{ SELECT COUNT(*) FROM blog }")
    long count();
  2. 非查询语句一定要使用指定isUpdate = true、

    @Sql(value = "{ DELETE FROM blog WHERE id IN #para(ids, 'in') }", isUpdate = true)
    deleteByIds(Object... ids);
  3. 自动识别返回类型:List<>,Page<>,Model,Record,Object,void

  4. 分页参数的约定

    ActiveRecord的分页口比较特殊,自动为不同的数据库自动拼装页号和页大小参数。此插件也做了相应的适配,只需要在返回类型为Page<>的接口定义pageNumber和pageSize即可。如果没有定义,则会以pageNumber=1和pageSize=10的默认值获取分页记录,因此一定要记得加上这两个参数。

    @Sql("paginateBy")
    Page<Blog> paginateBy(int pageNumber, int pageSize, Map<String, ?> map);
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简介

基于Solon框架(https://gitee.com/noear/solon)的 ActiveRecord 的框架适配插件activerecord-solon-plugin的Demo。 展开 收起
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