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# Copyright (C) 2015-2017 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.
module Mongo
class Cursor
module Builder
# Generates a specification for a get more command.
#
# @since 2.2.0
class GetMoreCommand
extend Forwardable
# @return [ Cursor ] cursor The cursor.
attr_reader :cursor
def_delegators :@cursor, :collection_name, :database, :view
def_delegators :view, :batch_size
# Create the new builder.
#
# @example Create the builder.
# GetMoreCommand.new(cursor)
#
# @param [ Cursor ] cursor The cursor.
# @param [ Session ] session The session.
#
# @since 2.2.0
def initialize(cursor, session = nil)
@cursor = cursor
@session = session
end
# Get the specification.
#
# @example Get the specification.
# get_more_command.specification
#
# @return [ Hash ] The spec.
#
# @since 2.2.0
def specification
{ selector: get_more_command, db_name: database.name, session: @session }
end
private
def get_more_command
command = { :getMore => cursor.id, :collection => collection_name }
command[:batchSize] = batch_size.abs if batch_size && batch_size != 0
# If the max_await_time_ms option is set, then we set maxTimeMS on
# the get more command.
if view.respond_to?(:max_await_time_ms)
if view.max_await_time_ms && view.options[:await_data]
command[:maxTimeMS] = view.max_await_time_ms
end
end
command
end
end
end
end
end
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