README-extend.md

功能点

一个json(事务)同时支持新增、修改、删除、查询、别名

APIJSON#468

使用说明

json支持多种方式定义method

第一种:

"@post","@put","@delete","@head","@get","@gets","@head","@heads"

"@post": ["Moment","Comment[]"] , 值为数组格式, 每个value = key

需要保证每个key唯一, 唯一判断标准:

key = Moment

key= Moment[]

会判断为相同key. 请通过别名区分, 别名格式: Sys_user_role:sur xxx表名:别名

{
   "@post": ["Moment","Comment:cArray[]","User:u"], // 分发到 POST 请求对应的解析处理
   "Moment": {
     // TODO 其它字段
   },
   "Comment:cArray[]": [
      {
        // TODO 其它字段
      }
   ],
   "@get": ["User"], // 分发到 GET 请求对应的解析处理
   "User:u": {
     // TODO 其它字段
   },
   "Privacy": { // 按 URL 对应的默认方法处理
     // TODO 其它字段
   }
}

对于没有显式声明操作方法的，直接用 URL(/get, /post 等) 对应的默认操作方法

第二种:

对象内定义"@method": "GET", value大写

{
	"sql@": {
    	"@method": "GET",
        "with": true,
        "from": "Sys_role",
        "Sys_role": {
          "@column": "id",
          "role_name": "角色1"
        }
    },
    "Sys_user_role:sur[]": {
    	"@method": "GET",
        "Sys_user_role": {
            "role_id{}@": "sql"
        }
    },
    "Sys_role_permission:srp[]": {
    	"@method": "GET",
        "Sys_role_permission": {
            "role_id{}@": "sql"
        }
    },
    "@explain": true
}

解析顺序

对象内 "@method"
"@post","@put","@delete"
对于没有显式声明操作方法的，直接用 URL(/get, /post 等) 对应的默认操作方法

tag自动生成规则

/**

{ "xxx:aa":{ "@tag": "" }}
生成规则:
1、@tag存在,tag=@tag
2、@tag不存在
1)、存在别名
key=对象: tag=key去除别名
key=数组: tag=key去除别名 + []
2)、不存在别名
tag=key
tag=key + [] */

建议

一个json包含不同操作方法, url method 使用 /post, /put
value为JSONArray, 建议通过"@post" 方式配置, 如果没有配置,执行 3

Request表配置说明

这只是我的配置仅供参考, 后续测试会用到:

单条新增:
POST   User_address     {"MUST":"addr","UPDATE": {"@role": "OWNER,ADMIN","childFunTest-()": "childFunTest(addr)"}, "REFUSE": "id"}
批量新增:
POST User_address[]  {"User_address[]": [{"MUST":"addr","REFUSE": "id"}], "UPDATE": {"@role": "OWNER,ADMIN","childFunTest-()": "childFunTest(addr)"}}
单条修改:
PUT User_address   {"User_address":{ "MUST":"id","REFUSE": "userId", "UPDATE": {"@role": "OWNER,ADMIN","childFunTest-()": "childFunTest(addr)"}} }
批量修改:
PUT User_address[]  {"User_address[]": [{"MUST": "id","REFUSE": "userId"}], "UPDATE": {"@role": "OWNER,ADMIN"}}
删除:
DELETE User_address   {"User_address":{ "MUST":"id{}","REFUSE": "!", "INSERT": {"@role": "OWNER,ADMIN"}} }

别名

格式:

Sys_user_role:sur xxx表名:别名

Comment:cArray[]

实现思路

当时参考了作者的示例: 注册流程. 看到绕过校验, 可以将多条json语句组装在一起, 批量执行. 于是就想如何实现一个json支持不同操作方法,并支持事物.

通过分析源码, 熟悉了校验流程、json解析执行流程、json解析生成sql语句流程、一些兼容、校验规则等

经过和作者讨论, 很感谢作者提供了相关解决方案和思路. 逐步理解了apijson的设计原理和框架结构.

一个json(事务)同时支持新增、修改、删除、查询、别名, 实现思路如下:

1、校验模块

将json解析成对象、临时变量、子查询、别名、tag等

并将method 添加到 json对象属性中.

"Sys_role": {
    	"@method": "PUT",
		"id": "6aedce0d-2a29-4fbe-aeed-0ba935ca6b41",
        "id{}@": "sql",
        "role_code": "code-subrange-4",
        "role_name": "角色-subrange-4"
    }

2、对象解析

用对象属性@method , 替换 Parser 的 method

3、事物支持

后续优化建议

1、独立定义一个url method, 通过解析不同method执行不同流程

和已有method区分开,避免歧义

2、最外层新增传参 "transaction": true 来指定开启事务目前是url put、post来控制开启事物, 以及提交的时候在 AbstractParser onCommit 判断 transactionIsolation (4 : 开启事物, 0: 非事物请求)

详细实现请参见: APIJSON#468

3、完善 "@Explain"

如果没有执行计划,则返回sql语句. 能够在 reponse返回值中, 看到json中执行的每条sql,方便排错

4、@version支持

定义不同场景的新增、修改、删除等执行规则. 请通过version版本区分

Request表是通过tag、method、version来保证唯一.

5、前置函数

前置函数能够将json语句, 加入到当前事物中.

例如: 像数组一样,解析成每一条语句去执行.

mysql8 with-as表达式

前提条件

1、mysql版本: 8+

2、mysql-connector-java: 8.0.31

版本支持 with-as即可

3、druid: 1.2.15

版本支持 with-as即可

4、去掉 durid wall配置

delete子查询, druid wall 拦截器报错 sql injection violation

测试案例

查询单个range ref引用

// 测试 mysql8 with as表达式
// 用户表
// 用户角色表
// 角色表
// 示例一 单个range ref引用
{
	"sql@": {
    	"@method": "GET",
        "with": true,
        "from": "Sys_role",
        "Sys_role": {
          "@column": "id",
          "role_name": "角色1"
        }
    },
    "Sys_user_role:sur[]": {
    	"@method": "GET",
        "Sys_user_role": {
            "role_id{}@": "sql"
        }
    },
    "Sys_role_permission:srp[]": {
    	"@method": "GET",
        "Sys_role_permission": {
            "role_id{}@": "sql"
        }
    },
    "@explain": true
}  

// 第二种写法
{
	"@get": ["sql@","Sys_user_role:sur[]","Sys_role_permission:srp[]"],
	"sql@": {
        "with": true,
        "from": "Sys_role",
        "Sys_role": {
          "@column": "id",
          "role_name": "角色1"
        }
    },
    "Sys_user_role:sur[]": {
        "Sys_user_role": {
            "role_id{}@": "sql"
        }
    },
    "Sys_role_permission:srp[]": {
        "Sys_role_permission": {
            "role_id{}@": "sql"
        }
    },
    "@explain": true
}

mysql8执行结果:

mysql5.7执行结果:

查询多个range ref引用

{
    "sql@": {
        "@method": "GET", 
        "with": true, 
        "from": "Sys_role", 
        "Sys_role": {
            "@column": "id", 
            "role_name": "角色1"
        }
    }, 
    "sql_user@": {
        "@method": "GET", 
        "with": true, 
        "from": "Sys_user", 
        "Sys_user": {
            "@column": "id", 
            "id": "f0894db2-6940-4d89-a5b2-4405d0ad0c8f"
        }
    }, 
    "Sys_user_role:sur[]": {
        "@method": "GET", 
        "Sys_user_role": {
            "role_id{}@": "sql", 
            "user_id{}@": "sql_user"
        }
    }, 
    "Sys_role_permission:srp[]": {
        "@method": "GET", 
        "Sys_role_permission": {
            "role_id{}@": "sql"
        }
    }, 
    "@explain": true
}

mysql8执行结果:

mysql5.7执行结果:

delete子查询

{
	"sql@": {
		"@method": "GET",
        "with": true,
        "from": "Sys_role_permission",
        "Sys_role_permission": {
          "@column": "id",
		  "role_id{}": ["e7129d5f-b07e-4996-9965-9528e370a393"]
        }
    },
    "Sys_role_permission": {
    	"@method": "DELETE",
        "id{}@": "sql"
    },
    "explan": true
}

mysql8执行sql语句:

WITH  `sql` AS (SELECT `id` FROM `housekeeping`.`Sys_role_permission` WHERE  (  (`role_id` IN ('68877ee9-4cf4-4f32-86e6-16c505ca3b21'))  ) ) DELETE FROM `housekeeping`.`Sys_role_permission` WHERE  (  (`id` IN ( SELECT * FROM `sql`) )  ) 

Plain Text

mysql5.7执行结果:

DELETE FROM `housekeeping`.`Sys_role_permission` WHERE  (  (`id` IN ( SELECT * FROM (SELECT `id` FROM `housekeeping`.`Sys_role_permission` WHERE  (  (`role_id` IN ('20d337bb-9886-455f-8dce-f1cadab0ec4f'))  ) ) AS `sql`) )  ) 



Plain Text

update子查询

{
   "sql@": {
		"@method": "GET",
        "with": true,
        "from": "Sys_role_permission",
        "Sys_role_permission": {
          "@column": "role_id",
		  "id{}": ["6aedce0d-2a29-4fbe-aeed-0ba935ca6b41"]
        }
    },
    "Sys_role": {
    	"@method": "PUT",
		"id": "6aedce0d-2a29-4fbe-aeed-0ba935ca6b41",
        "id{}@": "sql",
        "role_code": "code-subrange-4",
        "role_name": "角色-subrange-4"
    },
    "@explain": true
}

第二种写法
{
	"@get": ["sql@"],
    "sql@": {
        "with": true,
        "from": "Sys_role_permission",
        "Sys_role_permission": {
          "@column": "role_id",
		  "id{}": ["c95ef2d6-bf14-42b0-bb87-038cee8c78f1"]
        }
    },
    "@put": ["Sys_role"],
    "Sys_role": {
		"id": "0bb92d96-8ca6-469e-91e8-60308ce5b835",
        "id{}@": "sql",
        "role_code": "code-subrange-4",
        "role_name": "角色-subrange-4"
    },
    "@explain": true
}

mysql8执行sql语句:

mysql5.7执行结果:

GETS 单条子查询

会执行校验流程

http://localhost:8675/lowCodePlatform/forms/api/gets

{
	"sql@": {
        "with": true,
        "from": "Sys_user_role",
        "Sys_user_role": {
          "@column": "role_id",
		  "user_id": "4732209c-5785-4827-b532-5092f154fd94"
        }
    },
    "Sys_role[]": {
        "Sys_role": {
            "id{}@": "sql"
        },
        "page": 0,
        "count": 10,
        "query": 2
    },
    "tag":"Sys_role[]",
    "total@": "/Sys_role[]/total",
    "@explain": true
}

第二种写法
{
	"@gets": ["sql@","Sys_role[]"],
	"sql@": {
        "with": true,
        "from": "Sys_user_role",
        "Sys_user_role": {
          "@column": "role_id",
		  "user_id": "4732209c-5785-4827-b532-5092f154fd94"
        }
    },
    "Sys_role[]": {
        "Sys_role": {
            "id{}@": "sql"
        },
        "page": 0,
        "count": 10,
        "query": 2
    },
    "tag":"Sys_role[]",
    "total@": "/Sys_role[]/total",
    "@explain": true
}

Access、Request需要配置鉴权信息:

mysql8执行sql语句:

mysql5.7执行结果:

GETS多条子查询

会执行校验流程

http://localhost:8675/lowCodePlatform/forms/api/gets

{
	"sql@": {
    	"@method": "GETS",
        "with": true,
        "from": "Sys_role",
        "Sys_role": {
          "@column": "id",
          "role_name": "超级管理员"
        }
    },
    "sql_user@": {
    	"@method": "GETS",
        "with": true,
        "from": "Sys_user",
        "Sys_user": {
          "@column": "id",
          "id": "4732209c-5785-4827-b532-5092f154fd94"
        }
    },
    "Sys_user_role:sur[]": {
    	"@method": "GETS",
        "Sys_user_role": {
            "role_id{}@": "sql",
            "user_id{}@": "sql_user"
        }
    },
    "Sys_role_permission:srp[]": {
    	"@method": "GETS",
        "Sys_role_permission": {
            "role_id{}@": "sql"
        }
    },
    "@explain": true
}

mysql8执行sql语句:

mysql5.7执行结果:

head 单个子查询

普通获取数量, get/head不执行校验流程

http://localhost:8675/lowCodePlatform/forms/api/head
{
	"sql@": {
		"@method": "GET",
        "with": true,
        "from": "Sys_user_role",
        "Sys_user_role": {
          "@column": "role_id",
		  "user_id": "4732209c-5785-4827-b532-5092f154fd94"
        }
    },
    "Sys_role": {
    	"@method": "head",
        "id{}@": "sql"
    },
    "@explain": true
}

mysql8执行sql语句:

mysql5.7执行结果:

head 多个子查询

普通获取数量, get/head不执行校验流程

{
	"sql@": {
    	"@method": "GET",
        "with": true,
        "from": "Sys_role",
        "Sys_role": {
          "@column": "id",
          "role_name": "超级管理员"
        }
    },
    "sql_user@": {
    	"@method": "GET",
        "with": true,
        "from": "Sys_user",
        "Sys_user": {
          "@column": "id",
          "id": "4732209c-5785-4827-b532-5092f154fd94"
        }
    },
    "Sys_user_role": {
        "@method": "HEAD",
        "role_id{}@": "sql",
            "user_id{}@": "sql_user"
    },
    "Sys_role_permission": {
        "@method": "HEAD",
        "role_id{}@": "sql"
    },
    "@explain": true
}

mysql8执行sql语句:

mysql5.7执行结果:

heads 单个子查询

普通获取数量

会执行校验流程, Access、Request需要配置鉴权信息:

http://localhost:8675/lowCodePlatform/forms/api/heads

{
	"sql@": {
		"@method": "GET",
        "with": true,
        "from": "Sys_user_role",
        "Sys_user_role": {
          "@column": "role_id",
		  "user_id": "4732209c-5785-4827-b532-5092f154fd94"
        }
    },
    "Sys_role": {
    	"@method": "heads",
        "id{}@": "sql"
    },
    "@explain": true
}

mysql8执行sql语句:

mysql5.7执行结果:

heads 多个子查询

会执行校验流程, Access、Request需要配置鉴权信息:

普通获取数量

{
	"sql@": {
    	"@method": "GET",
        "with": true,
        "from": "Sys_role",
        "Sys_role": {
          "@column": "id",
          "role_name": "超级管理员"
        }
    },
    "sql_user@": {
    	"@method": "GET",
        "with": true,
        "from": "Sys_user",
        "Sys_user": {
          "@column": "id",
          "id": "4732209c-5785-4827-b532-5092f154fd94"
        }
    },
    "Sys_user_role": {
        "@method": "HEADS",
        "role_id{}@": "sql",
        "user_id{}@": "sql_user"
    },
    "Sys_role_permission": {
        "@method": "HEADS",
        "role_id{}@": "sql"
    },
    "@explain": true
}

mysql8执行sql语句:

mysql5.7执行结果:

delete、put 支持子查询

APIJSON#471

静态变量做全局处理，特殊接口用 Operation.MUST id/id{}/id{}@ 做自定义处理。

之所以默认必传，是因为安全意识不够、编码粗心大意的人太多了，所以要有一个底线保障，尽可能避免安全隐患。

1、全局配置为 PUT, DELETE 强制要求必须有 id/id{}/id{}@ 条件

AbstractVerifier.IS_UPDATE_MUST_HAVE_ID_CONDITION = true; // true: 必须有

2、细粒度控制

使用说明

// 条件删除
{
    "User:del": {
        "username": "test3"
    },
    "tag": "User",
    "explain": true
}

// 引用id{}@删除
{
	"sql@": {
		"@method": "GET",
        "with": true,
        "from": "Sys_user_role",
        "Sys_user_role": {
          "@column": "user_id",
		  "role_id{}": ["023e1880-c0d4-4e7c-ae6c-7703199c2daf"]
        }
    },
    "Sys_user:aa": {
    	"@method": "DELETE",
        "id{}@": "sql"
    },
    "explan": true
}
// 子查询条件删除
http://localhost:8675/lowCodePlatform/forms/api/delete
{
	"sql@": {
		"@method": "GET",
        "with": true,
        "from": "User",
        "User": {
          "@column": "username",
		  "username": "test-3"
        }
    },
    "User": {
        "username{}@": "sql"
    },
    "explan": true
}

第二种写法:
{
	"@get": ["sql@"],
	"sql@": {
        "with": true,
        "from": "User",
        "User": {
          "@column": "username",
		  "username": "test4"
        }
    },
    "User": {
        "username{}@": "sql"
    },
    "explan": true
}

开启id删除, 删除失败:

{
	"@get": ["sql@"],
	"sql@": {
        "with": true,
        "from": "User",
        "User": {
          "@column": "username",
		  "username": "test4"
        }
    },
    "User": {
        "username{}@": "sql"
    },
    "explan": true
}

开启id删除、id引用删除成功

{
	"sql@": {
		"@method": "GET",
        "with": true,
        "from": "Sys_user_role",
        "Sys_user_role": {
          "@column": "user_id",
		  "role_id{}": ["0bb92d96-8ca6-469e-91e8-60308ce5b835"]
        }
    },
    "Sys_user:aa": {
    	"@method": "DELETE",
        "id{}@": "sql"
    },
    "explan": true
}

PUT 子查询修改

{
   "sql@": {
		"@method": "GET",
        "with": true,
        "from": "Sys_role_permission",
        "Sys_role_permission": {
          "@column": "role_id",
		  "id{}": ["ba2634f8-0bdc-4b50-9c5e-47786b1536ef"]
        }
    },
    "Sys_role": {
    	"@method": "PUT",
        "id{}@": "sql",
        "role_code": "code-subrange-5",
        "role_name": "角色-subrange-5"
    },
    "@explain": true
}

bug修复

删除操作主表和子查询是同一张表 mysql8以下非with-as表达式会报错: "msg": "You can't specify target table 'User' for update in FROM clause",

需要调整sql语句,将子查询包一层(select * from (子查询) as xxx) DELETE FROM housekeeping.User WHERE ( (username IN (SELECT * FROM (SELECT username FROM housekeeping.User WHERE ( (username = 'test1') )) as a) ) )

must、refuses判断、delete、PUT支持 ref

{
	"sql@": {
		"@method": "GET",
        "with": true,
        "from": "Sys_role_permission",
        "Sys_role_permission": {
          "@column": "id",
		  "role_id{}": ["94f79f0b-331b-4cc5-bfc0-ebfc47d00f13"]
        }
    },
    "Sys_role_permission": {
    	"@method": "DELETE",
        "id{}@": "sql"
    },
    "explan": true
}

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功能点

一个json(事务)同时支持新增、修改、删除、查询、别名

使用说明

解析顺序

tag自动生成规则

建议

Request表 配置说明

别名

实现思路

后续优化建议

mysql8 with-as表达式

前提条件

测试案例

查询单个range ref引用

查询多个range ref引用

delete子查询

update子查询

GETS 单条子查询

GETS多条子查询

head 单个子查询

head 多个子查询

heads 单个子查询

heads 多个子查询

delete、put 支持子查询

使用说明

bug修复

must、refuses判断、delete、PUT支持 ref

Request表配置说明