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# frozen_string_literal: true
# rubocop:todo all
# Copyright (C) 2015-2020 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
module Operation
class Find
module Builder
# Provides behavior for converting Ruby options to wire protocol flags
# when sending find and related commands (e.g. explain).
#
# @api private
module Flags
# Options to cursor flags mapping.
MAPPINGS = {
:allow_partial_results => [ :partial ],
:oplog_replay => [ :oplog_replay ],
:no_cursor_timeout => [ :no_cursor_timeout ],
:tailable => [ :tailable_cursor ],
:tailable_await => [ :await_data, :tailable_cursor],
:await_data => [ :await_data ],
:exhaust => [ :exhaust ],
}.freeze
# Converts Ruby find options to an array of flags.
#
# Any keys in the input hash that are not options that map to flags
# are ignored.
#
# @param [ Hash, BSON::Document ] options The options.
#
# @return [ Array<Symbol> ] The flags.
module_function def map_flags(options)
MAPPINGS.each.reduce(options[:flags] || []) do |flags, (key, value)|
cursor_type = options[:cursor_type]
if options[key] || (cursor_type && cursor_type == key)
flags.push(*value)
end
flags
end
end
end
end
end
end
end
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