nodejs mongoose bulk update

Question

I\'ve a collection of data and I need to add for every documents a new field. If I run a query to get all documents and the update every single one node.js is stopped, may be fo

Answer 1

You can drop down to the collection level and do a bulk update. This action will not be atomic - some of the writes can fail and others might succeed - but it will allow you to make these writes in a single round trip to your database.

It looks like this:

var bulk = People.collection.initializeUnorderedBulkOp();
bulk.find({<query>}).update({<update>});
bulk.find({<query2>}).update({<update2>});
...
bulk.execute(function(err) {
    ...
});

Check out the docs here: http://docs.mongodb.org/manual/core/bulk-write-operations/

Answer 2

This example should include all the cases that we can mix together using directly with Mongoose bulkWrite() function:

Character.bulkWrite([
  {
    insertOne: {
      document: {
        name: 'Eddard Stark',
        title: 'Warden of the North'
      }
    }
  },
  {
    updateOne: {
      filter: { name: 'Eddard Stark' },
      // If you were using the MongoDB driver directly, you'd need to do
      // `update: { $set: { title: ... } }` but mongoose adds $set for
      // you.
      update: { title: 'Hand of the King' }
    }
  },
  {
    deleteOne: {
      {
        filter: { name: 'Eddard Stark' }
      }
    }
  }
]).then(res => {
 // Prints "1 1 1"
 console.log(res.insertedCount, res.modifiedCount, res.deletedCount);
});

Official Documentation: https://mongoosejs.com/docs/api.html#model_Model.bulkWrite

Answer 3

More detailed info about the query and update query.

var bulk = People.collection.initializeOrderedBulkOp();
    bulk.find(query).update(update);
    bulk.execute(function (error) {
       callback();                   
    });

Query is searching with array.
Update needs a $set

var bulk = People.collection.initializeOrderedBulkOp();
    bulk.find({'_id': {$in: []}}).update({$set: {status: 'active'}});
    bulk.execute(function (error) {
         callback();                   
    });

Query is a searching the id

var bulk = People.collection.initializeOrderedBulkOp();
    bulk.find({'_id': id}).update({$set: {status: 'inactive'}});
    bulk.execute(function (error) {
         callback();                   
    });