be/src/vec/aggregate_functions/aggregate_function_group_concat.cpp

// 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
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// KIND, either express or implied.  See the License for the
// specific language governing permissions and limitations
// under the License.

#include "vec/aggregate_functions/aggregate_function_group_concat.h"

#include <fmt/format.h>
#include <glog/logging.h>

#include "vec/aggregate_functions/helpers.h"

namespace doris::vectorized {
#include "common/compile_check_begin.h"

const std::string AggregateFunctionGroupConcatImplStr::separator = ",";

AggregateFunctionPtr create_aggregate_function_group_concat(const std::string& name,
                                                            const DataTypes& argument_types,
                                                            const DataTypePtr& result_type,
                                                            const bool result_is_nullable,
                                                            const AggregateFunctionAttr& attr) {
    if (argument_types.size() == 1) {
        return creator_without_type::create<
                AggregateFunctionGroupConcat<AggregateFunctionGroupConcatImplStr>>(
                argument_types, result_is_nullable, attr);
    } else if (argument_types.size() == 2) {
        return creator_without_type::create<
                AggregateFunctionGroupConcat<AggregateFunctionGroupConcatImplStrStr>>(
                argument_types, result_is_nullable, attr);
    }

    LOG(WARNING) << fmt::format("Illegal number {} of argument for aggregate function {}",
                                argument_types.size(), name);
    return nullptr;
}

void register_aggregate_function_group_concat(AggregateFunctionSimpleFactory& factory) {
    factory.register_function_both("group_concat", create_aggregate_function_group_concat);
}
} // namespace doris::vectorized