Node.js MongoDB Driver Support For NumberDecimal (Decimal128) Format

[Robert Cochran]

I'm using the 'mongodb' version 2.2.21 Node.js driver with Node 7.4.0. I'm using MongoDB 3.4.1 on my server machine. Using the mongo shell, I created some documents which contain fields in NumberDecimal format. I wanted to aggregate these numbers using the aggregation pipeline (db.collection.aggregate(..)) I tested the aggregation in the mongo shell, on my server, and that works fine. I can see the aggregated NumberDecimal fields.

I am wondering if there is NumberDecimal support in node-mongodb-native 2.2.21? This driver seems to return aggregated decimal values to the Node script like this: 

[ { _id: '19',

    tot_miles: 

     Decimal128 {

       _bsontype: 'Decimal128',

       bytes: <Buffer 78 00 00 00 00 00 00 00 00 00 00 00 00 00 3c 30> },

    tot_points: 

     Decimal128 {

       _bsontype: 'Decimal128',

       bytes: <Buffer 64 00 00 00 00 00 00 00 00 00 00 00 00 00 3c 30> } },

  { _id: '18',

    tot_miles: 

     Decimal128 {

       _bsontype: 'Decimal128',

       bytes: <Buffer a4 06 00 00 00 00 00 00 00 00 00 00 00 00 3c 30> },

    tot_points: 

     Decimal128 {

       _bsontype: 'Decimal128',

       bytes: <Buffer a4 06 00 00 00 00 00 00 00 00 00 00 00 00 3c 30> } } ]

Is there a toString() method to support that? Can I add documents to the collection which contain NumberDecimal? 

If this is not yet supported, when might it be?

Thanks a ton

Bob Cochran

Greenbelt, Maryland, USA

 

[christkv]

Decimal128 is supported as a BSON wrapper type. There was a bug in the doc generation that made it not show up correctly in the api docs. That should be fixed now

http://mongodb.github.io/node-mongodb-native/2.2/api/Decimal128.html