HappenLee commented on code in PR #31526: URL: https://github.com/apache/doris/pull/31526#discussion_r1509948095
########## be/src/vec/aggregate_functions/aggregate_function_foreach.h: ########## @@ -0,0 +1,263 @@ +// Licensed to the Apache Software Foundation (ASF) under one +// or more contributor license agreements. See the NOTICE file +// distributed with this work for additional information +// regarding copyright ownership. The ASF 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. +// This file is copied from +// https://github.com/ClickHouse/ClickHouse/blob/master/src/AggregateFunctions/Combinators/AggregateFunctionForEach.h +// and modified by Doris + +#pragma once + +#include "common/logging.h" +#include "common/status.h" +#include "vec/aggregate_functions/aggregate_function.h" +#include "vec/columns/column_nullable.h" +#include "vec/common/assert_cast.h" +#include "vec/data_types/data_type_array.h" +#include "vec/data_types/data_type_nullable.h" +#include "vec/functions/array/function_array_utils.h" +#include "vec/io/io_helper.h" + +namespace doris::vectorized { + +struct AggregateFunctionForEachData { + size_t dynamic_array_size = 0; + char* array_of_aggregate_datas = nullptr; +}; + +/** Adaptor for aggregate functions. + * Adding -ForEach suffix to aggregate function + * will convert that aggregate function to a function, accepting arrays, + * and applies aggregation for each corresponding elements of arrays independently, + * returning arrays of aggregated values on corresponding positions. + * + * Example: sumForEach of: + * [1, 2], + * [3, 4, 5], + * [6, 7] + * will return: + * [10, 13, 5] + * + * TODO Allow variable number of arguments. + */ +class AggregateFunctionForEach : public IAggregateFunctionDataHelper<AggregateFunctionForEachData, + AggregateFunctionForEach> { +protected: + using Base = + IAggregateFunctionDataHelper<AggregateFunctionForEachData, AggregateFunctionForEach>; + + AggregateFunctionPtr nested_function; + const size_t nested_size_of_data; + const size_t num_arguments; + + AggregateFunctionForEachData& ensureAggregateData(AggregateDataPtr __restrict place, Review Comment: ensure_aggregate_data( -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: commits-unsubscr...@doris.apache.org For queries about this service, please contact Infrastructure at: us...@infra.apache.org --------------------------------------------------------------------- To unsubscribe, e-mail: commits-unsubscr...@doris.apache.org For additional commands, e-mail: commits-h...@doris.apache.org
