MongoDB with the Node.js driver

Uses the official mongodb package 7.8. The code is an ordinary application for the original database; nothing in it knows about MachNoSQL.

The only change

mongodb://app:secret@mongo.example.com:27017/shop?authSource=admin
mongodb://app:secret@machnosql.example.com:27017/shop?authSource=admin

The address comes from the environment variable MONGODB_URI, so switching to MachNoSQL changes configuration only.

Run

export MONGODB_URI='mongodb://app:secret@machnosql.example.com:27017/shop?authSource=admin'
npm install
npm start

Source

The program as it is kept and tested in the Mach Database NoSQL repository; highlighted lines read the connection setting.

app.js

// Orders example for MongoDB, unchanged on MachNoSQL.
import { MongoClient } from "mongodb";

const client = new MongoClient(process.env.MONGODB_URI);
await client.connect();
const orders = client.db().collection("orders");

await orders.deleteMany({});
await orders.insertMany([
  { customer: "ada", item: "keyboard", qty: 1, price: 49.0 },
  { customer: "ada", item: "mouse", qty: 2, price: 19.5 },
  { customer: "linus", item: "monitor", qty: 1, price: 199.0 },
]);
await orders.createIndex({ customer: 1 });

console.log(await orders.findOne({ item: "mouse" }, { projection: { _id: 0 } }));
await orders.updateOne({ item: "mouse" }, { $inc: { qty: 1 } });

const revenue = await orders
  .aggregate([
    { $group: { _id: "$customer", revenue: { $sum: { $multiply: ["$qty", "$price"] } } } },
    { $sort: { revenue: -1 } },
  ])
  .toArray();
console.log(revenue);

await client.close();

package.json

{
  "name": "machnosql-example-mongodb-node",
  "private": true,
  "type": "module",
  "scripts": { "start": "node app.js" },
  "dependencies": { "mongodb": "^7.8.0" }
}