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# Licensed to Elasticsearch B.V. under one or more contributor
# license agreements. See the NOTICE file distributed with
# this work for additional information regarding copyright
# ownership. Elasticsearch B.V. licenses this file to you 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 Elasticsearch
module DSL
module Search
module Aggregations
# A metric aggregation which uses scripts for the computation
#
# @example
#
# search do
# aggregation :clicks_for_one do
# scripted_metric do
# init_script "_agg['transactions'] = []"
# map_script "if (doc['tags'].value.contains('one')) { _agg.transactions.add(doc['clicks'].value) }"
# combine_script "sum = 0; for (t in _agg.transactions) { sum += t }; return sum"
# reduce_script "sum = 0; for (a in _aggs) { sum += a }; return sum"
# end
# end
# end
#
# @see http://elasticsearch.org/guide/en/elasticsearch/reference/current/search-aggregations-metrics-scripted-metric-aggregation.html
#
# See the integration test for a full example.
#
class ScriptedMetric
include BaseComponent
option_method :init_script
option_method :map_script
option_method :combine_script
option_method :reduce_script
option_method :params
option_method :lang
end
end
end
end
end
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