Contents

# Copyright (C) 2014-2015 MongoDB, Inc.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#   http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

require 'mongo/operation/commands/map_reduce/result'

module Mongo
  module Operation
    # A MongoDB map reduce operation.
    #
    # @note A map/reduce operation can behave like a read and
    #   return a result set, or can behave like a write operation and
    #   output results to a user-specified collection.
    #
    # @example Create the map/reduce operation.
    #   MapReduce.new({
    #     :selector => {
    #       :mapreduce => 'test_coll',
    #       :map => '',
    #       :reduce => ''
    #     },
    #     :db_name  => 'test_db'
    #   })
    #
    # Initialization:
    #   param [ Hash ] spec The specifications for the operation.
    #
    #   option spec :selector [ Hash ] The map reduce selector.
    #   option spec :db_name [ String ] The name of the database on which
    #     the operation should be executed.
    #   option spec :options [ Hash ] Options for the map reduce command.
    #
    # @since 2.0.0
    class MapReduce
      include Specifiable
      include Limited
      include ReadPreference
      include Executable

      private

      def query_coll
        Database::COMMAND
      end
    end
  end
end

Version data entries

4 entries across 4 versions & 1 rubygems

Version	Path
mongo-2.1.2	lib/mongo/operation/commands/map_reduce.rb
mongo-2.1.1	lib/mongo/operation/commands/map_reduce.rb
mongo-2.1.0	lib/mongo/operation/commands/map_reduce.rb
mongo-2.1.0.rc0	lib/mongo/operation/commands/map_reduce.rb