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# Copyright (C) 2014-2017 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
module Operation
module Write
module Bulk
class Delete
# Defines common r_removed aggreation behaviour.
#
# @since 2.2.0
module Aggregatable
# Gets the number of documents deleted.
#
# @example Get the deleted count.
# result.n_removed
#
# @return [ Integer ] The number of documents deleted.
#
# @since 2.0.0
def n_removed
return 0 unless acknowledged?
@replies.reduce(0) do |n, reply|
if reply.documents.first[Result::N]
n += reply.documents.first[Result::N]
else
n
end
end
end
end
# Defines custom behaviour of results when deleting.
#
# @since 2.0.0
class Result < Operation::Result
include Mergable
include Aggregatable
# The aggregate number of deleted docs reported in the replies.
#
# @since 2.0.0
REMOVED = 'nRemoved'.freeze
end
# Defines custom behaviour of results when deleting.
# For server versions < 2.5.5 (that don't use write commands).
#
# @since 2.0.0
class LegacyResult < Operation::Result
include LegacyMergable
include Aggregatable
end
end
end
end
end
end
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