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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 Command
# A MongoDB delete write command operation.
#
# @example Initialize a delete write command.
# Write::Command::Delete.new({
# :deletes => [{ :q => { :foo => 1 }, :limit => 1 }],
# :db_name => 'test',
# :coll_name => 'test_coll',
# :write_concern => write_concern,
# :ordered => true
# })
#
# @since 2.0.0
class Delete
include Specifiable
include Writable
private
IDENTIFIER = 'deletes'.freeze
# The query selector for this delete command operation.
#
# @return [ Hash ] The selector describing this delete operation.
#
# @since 2.0.0
def selector
{ delete: coll_name,
deletes: deletes
}.merge(command_options)
end
def op_msg(server)
global_args = { delete: coll_name,
Protocol::Msg::DATABASE_IDENTIFIER => db_name
}.merge!(command_options)
update_selector_for_session!(global_args, server)
section = { type: 1, payload: { identifier: IDENTIFIER, sequence: deletes } }
flags = unacknowledged_write? ? [:more_to_come] : [:none]
Protocol::Msg.new(flags, {}, global_args, section)
end
# The wire protocol message for this write operation.
#
# @return [ Mongo::Protocol::Query ] Wire protocol message.
#
# @since 2.0.0
def message(server)
if server.features.op_msg_enabled?
op_msg(server)
else
Protocol::Query.new(db_name, Database::COMMAND, selector, options)
end
end
end
end
end
end
end
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