Creates the given index.

import scala.concurrent.{ ExecutionContext, Future }

import reactivemongo.api.collections.GenericCollection
import reactivemongo.api.indexes.Index

def createIndexes(
  coll: GenericCollection[_], is: Seq[Index.Default])(
  implicit ec: ExecutionContext): Future[Unit] =
  Future.sequence(
    is.map(idx => coll.indexesManager.create(idx))).map(_ => {})

_Warning_: given the options you choose, and the data to index, it can be a long and blocking operation on the database. You should really consider reading http://www.mongodb.org/display/DOCS/Indexes before doing this, especially in production.

Drops the given index on that collection.

import scala.concurrent.{ ExecutionContext, Future }

import reactivemongo.api.collections.GenericCollection

def dropIndex(coll: GenericCollection[_], name: String)(
  implicit ec: ExecutionContext): Future[Int] =
  coll.indexesManager.drop(name)

Drops all the indexes on that collection.

import scala.concurrent.{ ExecutionContext, Future }
import reactivemongo.api.collections.GenericCollection

def dropAllIndexes(coll: GenericCollection[_])(
  implicit ec: ExecutionContext): Future[Int] =
  coll.indexesManager.dropAll()

Creates the given index only if it does not exist on this collection.

The following rules are used to check the matching index: - if nsIndex.isDefined, it checks using the index name, - otherwise it checks using the key.

import scala.concurrent.{ ExecutionContext, Future }

import reactivemongo.api.collections.GenericCollection
import reactivemongo.api.indexes.Index

def ensureIndexes(
  coll: GenericCollection[_], is: Seq[Index.Default])(
  implicit ec: ExecutionContext): Future[Unit] =
  Future.sequence(
    is.map(idx => coll.indexesManager.ensure(idx))).map(_ => {})

_Warning_: given the options you choose, and the data to index, it can be a long and blocking operation on the database. You should really consider reading http://www.mongodb.org/display/DOCS/Indexes before doing this, especially in production.

Lists the indexes for the current collection.

import scala.concurrent.{ ExecutionContext, Future }
import reactivemongo.api.collections.GenericCollection

def listIndexes(coll: GenericCollection[_])(
  implicit ec: ExecutionContext): Future[List[String]] =
  coll.indexesManager.list().map(_.flatMap { idx =>
    idx.name.toList
  })