Aggregation & Rogue

[Roch Delsalle]

Hi,

I would like to know if its possible to use MongoDB aggregations via Rogue ?

I'm currently setting up a small list with filters and I'm trying to do it without using ElasticSearch / Facets since its a small project.

Best,

Roch

[Jason Liszka]

No, sorry, full aggregations are not supported yet. Only count and distinct so far. Pull requests welcome!

But if you give some more details about what you're trying to do, perhaps I can suggest a way to do it without aggregations.

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[Roch Delsalle]

Hi Jason,

Thank you for your answer,

I did it using the basic MongoDB library :

var items = MongoDB.use(DefaultMongoIdentifier) { db =>

    var collection = db.getCollection("products")

    var cmd = new GroupCommand(collection,

      new BasicDBObject("brand", 1),

      null,

      new BasicDBObject("count", 0),

      "function ( curr, result ) {result.count++}",

      null);

    implicit val formats = net.liftweb.json.DefaultFormats

    JObjectParser.serialize(collection.group(cmd))

  }

Then I can map the values to a list of Brand objects.

Roch