Is it possible to add multiple documents in meteor through collection.insert()?

Question

I like to add multiple documents at once in a collection in meteor.

MongoDB supports this from 2.2:

db.collection.insert([{docNumber: 1},{docNumber: 2}])

Is it possible to achieve this behaviour also in Meteor? Something like:

myCollection.insert([{docNumber: 1},{docNumber: 2}])

Currently this will be added as one document. I can unfortunately not live with an iterator because the use case is loading more than 100'000 documents. This is to slow with single inserts.

Answer 1

Batch insertion isn't yet possible with Meteor. Though you could make an iterator to help you insert documents in an array

var docs = [{docNumber: 1},{docNumber: 2}];

_.each(docs, function(doc) {
    myCollection.insert(doc);
});

It might be possible to do it on the server end, albeit with a bit of modifications to expose a bulk insertion method. The problem with this though is this code wouldn't work on the client end.

Answer 2

I wrote a simple script to bulk insert. It works only on the client side by inserting documents to the collection without reactivity. only the last item will call the reactive computations.

insertBulk = function(collection, documents){
  if(collection) {
    return _.compact(_.map(documents, function(item){
        if(_.isObject(item)) {

            var _id = collection._makeNewID();

            // insert with reactivity only on the last item
            if(_.last(documents) === item)
                _id = collection.insert(item);

            // insert without reactivity
            else {
                item._id = _id;
                collection._collection._docs._map[_id] = item;
            }

            return _id;
        }
    }));
  }
}

You can find an example script including removebulk() function here: https://gist.github.com/frozeman/88a3e47679dd74242cab