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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 BulkWrite
# Defines behaviour around transformations.
#
# @api private
#
# @since 2.1.0
module Transformable
# The delete many model constant.
#
# @since 2.1.0
DELETE_MANY = :delete_many.freeze
# The delete one model constant.
#
# @since 2.1.0
DELETE_ONE = :delete_one.freeze
# The insert one model constant.
#
# @since 2.1.0
INSERT_ONE = :insert_one.freeze
# The replace one model constant.
#
# @since 2.1.0
REPLACE_ONE = :replace_one.freeze
# The update many model constant.
#
# @since 2.1.0
UPDATE_MANY = :update_many.freeze
# The update one model constant.
#
# @since 2.1.0
UPDATE_ONE = :update_one.freeze
# Proc to transform delete many ops.
#
# @since 2.1.0
DELETE_MANY_TRANSFORM = ->(doc){
{ Operation::Q => doc[:filter],
Operation::LIMIT => 0 }.tap do |d|
d[Operation::COLLATION] = doc[:collation] if doc[:collation]
end
}
# Proc to transform delete one ops.
#
# @since 2.1.0
DELETE_ONE_TRANSFORM = ->(doc){
{ Operation::Q => doc[:filter],
Operation::LIMIT => 1 }.tap do |d|
d[Operation::COLLATION] = doc[:collation] if doc[:collation]
end
}
# Proc to transform insert one ops.
#
# @since 2.1.0
INSERT_ONE_TRANSFORM = ->(doc){
doc
}
# Proc to transfor replace one ops.
#
# @since 2.1.0
REPLACE_ONE_TRANSFORM = ->(doc){
{
Operation::Q => doc[:filter],
Operation::U => doc[:replacement],
Operation::MULTI => false,
Operation::UPSERT => doc.fetch(:upsert, false)
}.tap do |d|
d[Operation::COLLATION] = doc[:collation] if doc[:collation]
end
}
# Proc to transform update many ops.
#
# @since 2.1.0
UPDATE_MANY_TRANSFORM = ->(doc){
{
Operation::Q => doc[:filter],
Operation::U => doc[:update],
Operation::MULTI => true,
Operation::UPSERT => doc.fetch(:upsert, false)
}.tap do |d|
d[Operation::COLLATION] = doc[:collation] if doc[:collation]
d[Operation::ARRAY_FILTERS] = doc[:array_filters] if doc[:array_filters]
end
}
# Proc to transform update one ops.
#
# @since 2.1.0
UPDATE_ONE_TRANSFORM = ->(doc){
{
Operation::Q => doc[:filter],
Operation::U => doc[:update],
Operation::MULTI => false,
Operation::UPSERT => doc.fetch(:upsert, false)
}.tap do |d|
d[Operation::COLLATION] = doc[:collation] if doc[:collation]
d[Operation::ARRAY_FILTERS] = doc[:array_filters] if doc[:array_filters]
end
}
# Document mappers from the bulk api input into proper commands.
#
# @since 2.1.0
MAPPERS = {
DELETE_MANY => DELETE_MANY_TRANSFORM,
DELETE_ONE => DELETE_ONE_TRANSFORM,
INSERT_ONE => INSERT_ONE_TRANSFORM,
REPLACE_ONE => REPLACE_ONE_TRANSFORM,
UPDATE_MANY => UPDATE_MANY_TRANSFORM,
UPDATE_ONE => UPDATE_ONE_TRANSFORM
}.freeze
private
def transform(name, document)
validate(name, document)
MAPPERS[name].call(document)
end
end
end
end
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