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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
# This module contains common functionality for operations that send either
# a write command or a specific wire protocol message, depending on server version.
# For server versions >= 2.6, a write command is sent.
#
# @since 2.1.0
module WriteCommandEnabled
# Execute the operation.
#
# @example Execute the operation.
# operation.execute(server)
#
# @param [ Mongo::Server ] server The server to send this operation to.
#
# @return [ Result ] The operation result.
#
# @since 2.1.0
def execute(server)
if unacknowledged_write?
raise Error::UnsupportedCollation.new(Error::UnsupportedCollation::UNACKNOWLEDGED_WRITES_MESSAGE) if has_collation?
raise Error::UnsupportedArrayFilters.new(Error::UnsupportedArrayFilters::UNACKNOWLEDGED_WRITES_MESSAGE) if has_array_filters?
end
if server.features.op_msg_enabled? # version 3.6
execute_write_command(server)
else # server version is 2.6 through 3.4
if unacknowledged_write?
execute_message(server)
else
execute_write_command(server)
end
end
end
private
def has_array_filters?
false
end
def has_collation?
false
end
def unacknowledged_write?
write_concern && write_concern.get_last_error.nil?
end
def execute_write_command(server)
result_class = self.class.const_defined?(:Result, false) ? self.class::Result : Result
result = result_class.new(write_command_op.execute(server))
server.update_cluster_time(result)
session.process(result) if session
result.validate!
end
end
end
end
end
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