SubhamSubhasisPatra / Mongo-aggregator-pipeline

the custom Mongo aggregation pipeline can be applied on any JSON data stream duing runtime and the same code can be used every where.

Mongo Aggregatio pipe

This library will mimic the abstact view of mongo aggregatio pipe line , and it can be applied on any json stream from any stream, plug it in and it will work like a Driver level aggregator

Test Code

const DataAggregator = require("./aggregationPipe");



const pipeline = [
    { $match: { color: 'green' } },
    //{ $group: { _id: { category: '$category' }, totalSale: { $sum: '$sales' } } }, 
    { $group: { _id: '$category' , totalSale: { $sum: 1 } } },
    { $group: { _id: { category: '$category' }, totalSale: { $sum: '$sales' } } },
    { $sort: { totalSale: -1 } },
    { $project: { category: 1, totalSale: 1, _id: 0 } },
];

const data = [
    { category: 'Electronics', color: 'red', sales: 1000 },
    { category: 'Electronics', color: 'red', sales: 2000 },
    { category: 'Clothing', color: 'red', sales: 1500 },
    { category: 'Clothing', color: 'green', sales: 800 },
    { category: 'Food', color: 'red', sales: 500 },
    { category: 'Food', color: 'red', sales: 1200 },
];

const aggregator = new DataAggregator(pipeline);

(async () => {
    try {
        const result = await aggregator.aggregate(data);
        console.log(result);
    } catch (error) {
        console.error(error);
    }
})();