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@hypersprite/node-adodb

v5.0.4

Published

A Node.js JavaScript Client implementing the ADODB protocol.

Downloads

6

Readme

node-adodb

This is a fork of node-adodb so it can be installed on Darwin without complaining. It can't be used on Darwin.

install yarn add @hypersprite/node-adodb

Text below is the original readme.


一个用 Node.js 实现的 windows 上的 ADODB 协议。

NPM Version Download Status Windows Status Test Coverage Node Version Dependencies

安装

NPM

使用示例:

ES6
'use strict';

const ADODB = require('node-adodb');
const connection = ADODB.open('Provider=Microsoft.Jet.OLEDB.4.0;Data Source=node-adodb.mdb;');

// 交易
connection
  .transaction([`INSERT INTO Users(UserId, UserName, UserSex, UserBirthday, UserMarried) VALUES (10, "Tom", "Male", "1981/5/10", 0);`,
          `INSERT INTO Users(UserId, UserName, UserSex, UserBirthday, UserMarried) VALUES (11, "Brenda", "Female", "2001/1/11", 0);`,
          `INSERT INTO Users(UserId, UserName, UserSex, UserBirthday, UserMarried) VALUES (10, "Bill", "Male", "1991/3/9", 0);`])
  .then(data => {
    console.log("我们不会到达,因为生成了重复的ID。遇到错误时,请勿插入任何记录。");
  })
  .catch(error => {
    console.error(error);
  });

// 不带返回的执行
connection
  .execute('INSERT INTO Users(UserName, UserSex, UserAge) VALUES ("Newton", "Male", 25)')
  .then(data => {
    console.log(JSON.stringify(data, null, 2));
  })
  .catch(error => {
    console.error(error);
  });

// 带返回标识的执行
connection
  .execute('INSERT INTO Users(UserName, UserSex, UserAge) VALUES ("Newton", "Male", 25)', 'SELECT @@Identity AS id')
  .then(data => {
    console.log(JSON.stringify(data, null, 2));
  })
  .catch(error => {
    console.error(error);
  });

// 带返回的查询
connection
  .query('SELECT * FROM Users')
  .then(data => {
    console.log(JSON.stringify(data, null, 2));
  })
  .catch(error => {
    console.error(error);
  });

// 带字段描述的查询
connection
  .schema(20)
  .then(schema => {
    console.log(JSON.stringify(schema, null, 2));
  })
  .catch(error => {
    console.error(error);
  });
ES7 async/await
'use strict';

const ADODB = require('node-adodb');
const connection = ADODB.open('Provider=Microsoft.Jet.OLEDB.4.0;Data Source=node-adodb.mdb;');

async function query() {
  try {
    const users = await connection.query('SELECT * FROM Users');

    console.log(JSON.stringify(users, null, 2));
  } catch (error) {
    console.error(error);
  }
}

query();

接口文档:

ADODB.open(connection[, x64]): ADODB

初始化数据库链接参数。

ADODB.query(sql): Promise

执行有返回值的 SQL 语句。

ADODB.execute(sql[, scalar]): Promise

执行无返回值或者带更新统计的的 SQL 语句。

ADODB.transaction(sql[]): Promise

执行多个SQL语句作为事务。

ADODB.schema(type[, criteria][, id]): Promise

查询数据库架构信息。参考: OpenSchema

调试:

设置环境变量 DEBUG=ADODB。参考: debug

扩展:

该类库理论支持 Windows 平台下所有支持 ADODB 连接的数据库,只需要更改数据库连接字符串即可实现操作!

数据库连接字符串:

  • Access 2000-2003 (*.mdb): Provider=Microsoft.Jet.OLEDB.4.0;Data Source=node-adodb.mdb;
  • Access > 2007 (*.accdb): Provider=Microsoft.ACE.OLEDB.12.0;Data Source=adodb.accdb;Persist Security Info=False; 或者   Provider=Microsoft.ACE.OLEDB.15.0;Data Source=adodb.accdb;Persist Security Info=False;

注意:

该类库需要系统支持 Microsoft.Jet.OLEDB.4.0 或者 Microsoft.ACE.OLEDB.12.0,对于 Windows XP SP2 以上系统默认支持 Microsoft.Jet.OLEDB.4.0,其它需要自己安装支持!

推荐使用 Microsoft.ACE.OLEDB.12.0,获取地址: Microsoft.ACE.OLEDB.12.0

Electron

如果你想在 ASAR 包中运行这个模块,你需要做一些修改。

  1. asar 包中排除 adodb.js(使用 electron-builder, 可以配置 extraResources 将制定文件排除在外)
"extraResources": [
  {
    "from": "./node_modules/node-adodb/lib/adodb.js",
    "to": "adodb.js"
  }
]
  1. 告诉 asar 从哪里运行 adodb.js (可以将配置写在 Electronmain.js 文件中)
// Are we running from inside an asar package ?
if (process.mainModule.filename.indexOf('app.asar') !== -1) {
  // In that case we need to set the correct path to adodb.js
  ADODB.PATH = './resources/adodb.js';
}