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[feature](function) support format function
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| // 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. | ||
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| #include <glog/logging.h> | ||
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| #include <cstdio> | ||
| #include <regex> | ||
| #include <vector> | ||
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| #include "common/status.h" | ||
| #include "vec/columns/column.h" | ||
| #include "vec/columns/column_vector.h" | ||
| #include "vec/common/assert_cast.h" | ||
| #include "vec/core/types.h" | ||
| #include "vec/data_types/data_type_number.h" | ||
| #include "vec/functions/cast_type_to_either.h" | ||
| #include "vec/functions/simple_function_factory.h" | ||
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| namespace doris::vectorized { | ||
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| class FunctionFormatNumber : public IFunction { | ||
| public: | ||
| static constexpr auto name = "format_number"; | ||
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| static constexpr const char* UNITS[6] = {"", "K", "M", "B", "T", "Q"}; | ||
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| static FunctionPtr create() { return std::make_shared<FunctionFormatNumber>(); } | ||
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| String get_name() const override { return name; } | ||
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| size_t get_number_of_arguments() const override { return 1; } | ||
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| bool is_variadic() const override { return false; } | ||
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| DataTypePtr get_return_type_impl(const DataTypes& arguments) const override { | ||
| return std::make_shared<DataTypeString>(); | ||
| } | ||
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| Status execute_impl(FunctionContext* context, Block& block, const ColumnNumbers& arguments, | ||
| uint32_t result, size_t input_rows_count) const override { | ||
| auto column = block.get_by_position(arguments[0]).column; | ||
| const auto& column_data = | ||
| assert_cast<const ColumnVector<Float64>*>(column.get())->get_data(); | ||
| auto col_res = ColumnString::create(); | ||
| fmt::memory_buffer buffer; | ||
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| for (auto i = 0; i < input_rows_count; ++i) { | ||
| auto res_data = format_number(buffer, column_data[i]); | ||
| col_res->insert_data(res_data.data(), res_data.length()); | ||
| } | ||
| block.replace_by_position(result, std::move(col_res)); | ||
| return Status::OK(); | ||
| } | ||
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| std::string format_number(fmt::memory_buffer& buffer, double number) const { | ||
| buffer.clear(); | ||
| double abs_number = std::abs(number); | ||
| int unit_index = 0; | ||
| while (abs_number >= 1000 && unit_index < 5) { | ||
| abs_number /= 1000; | ||
| ++unit_index; | ||
| } | ||
| if (number < 0) { | ||
| fmt::format_to(buffer, "-"); | ||
| } | ||
| if (abs_number == 1) { | ||
| fmt::format_to(buffer, "{}", abs_number); | ||
| } else if (abs_number < 10) { | ||
| fmt::format_to(buffer, "{:.2f}", abs_number); | ||
| } else if (abs_number < 100) { | ||
| fmt::format_to(buffer, "{:.1f}", abs_number); | ||
| } else { | ||
| fmt::format_to(buffer, "{:.0f}", abs_number); | ||
| } | ||
| fmt::format_to(buffer, UNITS[unit_index]); | ||
| return fmt::to_string(buffer); | ||
| } | ||
| }; | ||
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| class FunctionFormat : public IFunction { | ||
| public: | ||
| static constexpr auto name = "format"; | ||
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| static FunctionPtr create() { return std::make_shared<FunctionFormat>(); } | ||
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| String get_name() const override { return name; } | ||
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| size_t get_number_of_arguments() const override { return 0; } | ||
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| bool is_variadic() const override { return true; } | ||
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| DataTypePtr get_return_type_impl(const DataTypes& arguments) const override { | ||
| return std::make_shared<DataTypeString>(); | ||
| } | ||
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| Status execute_impl(FunctionContext* context, Block& block, const ColumnNumbers& arguments, | ||
| uint32_t result, size_t input_rows_count) const override { | ||
| DCHECK_GE(arguments.size(), 2); | ||
| bool valid = | ||
| cast_type(block.get_by_position(arguments[1]).type.get(), [&](const auto& type) { | ||
| using DataType = std::decay_t<decltype(type)>; | ||
| using T = typename DataType::FieldType; | ||
| using ColVecData = | ||
| std::conditional_t<IsNumber<T>, ColumnVector<T>, ColumnString>; | ||
| if (auto col = check_and_get_column<ColVecData>( | ||
| block.get_by_position(arguments[1]).column.get()) || | ||
| is_column_const(*block.get_by_position(arguments[1]).column)) { | ||
| execute_inner<ColVecData, T>(block, arguments, result, input_rows_count); | ||
| return true; | ||
| } | ||
| return false; | ||
| }); | ||
| if (!valid) { | ||
| return Status::RuntimeError( | ||
| "{}'s argument does not match the expected data type, type: {}, column: {}", | ||
| get_name(), block.get_by_position(arguments[1]).type->get_name(), | ||
| block.get_by_position(arguments[1]).column->dump_structure()); | ||
| } | ||
| return Status::OK(); | ||
| } | ||
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| template <typename F> | ||
| static bool cast_type(const IDataType* type, F&& f) { | ||
| return cast_type_to_either<DataTypeInt8, DataTypeInt16, DataTypeInt32, DataTypeInt64, | ||
| DataTypeInt128, DataTypeFloat32, DataTypeFloat64, | ||
| DataTypeString>(type, std::forward<F>(f)); | ||
| } | ||
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| template <typename ColVecData, typename T> | ||
| void execute_inner(Block& block, const ColumnNumbers& arguments, uint32_t result, | ||
| size_t input_rows_count) const { | ||
| size_t argument_size = arguments.size(); | ||
| std::vector<ColumnPtr> argument_columns(argument_size); | ||
| auto result_column = ColumnString::create(); | ||
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| // maybe most user is format(const, column), so only handle this case const column | ||
| if (argument_size == 2) { | ||
| std::vector<uint8_t> is_consts(argument_size); | ||
| std::tie(argument_columns[0], is_consts[0]) = | ||
| unpack_if_const(block.get_by_position(arguments[0]).column); | ||
| std::tie(argument_columns[1], is_consts[1]) = | ||
| unpack_if_const(block.get_by_position(arguments[1]).column); | ||
| execute_for_two_argument<ColVecData, T>(argument_columns, is_consts, | ||
| assert_cast<ColumnString*>(result_column.get()), | ||
| input_rows_count); | ||
| } else { | ||
| for (size_t i = 0; i < argument_size; ++i) { | ||
| argument_columns[i] = block.get_by_position(arguments[i]) | ||
| .column->convert_to_full_column_if_const(); | ||
| } | ||
| execute_for_others_arg<ColVecData, T>(argument_columns, | ||
| assert_cast<ColumnString*>(result_column.get()), | ||
| argument_size, input_rows_count); | ||
| } | ||
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| block.replace_by_position(result, std::move(result_column)); | ||
| } | ||
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| template <typename ColVecData, typename T> | ||
| void execute_for_two_argument(std::vector<ColumnPtr>& argument_columns, | ||
| std::vector<uint8_t>& is_consts, ColumnString* result_data_column, | ||
| size_t input_rows_count) const { | ||
| const auto& format_column = assert_cast<const ColumnString&>(*argument_columns[0].get()); | ||
| const auto& value_column = assert_cast<const ColVecData&>(*argument_columns[1].get()); | ||
| for (int i = 0; i < input_rows_count; ++i) { | ||
| auto format = | ||
| format_column.get_data_at(index_check_const(i, is_consts[0])).to_string_view(); | ||
| std::string res; | ||
| try { | ||
| if constexpr (std::is_same_v<ColVecData, ColumnString>) { | ||
| auto value = value_column.get_data_at(index_check_const(i, is_consts[1])); | ||
| res = fmt::format(format, value); | ||
| } else { | ||
| auto value = value_column.get_data()[i]; | ||
| res = fmt::format(format, value); | ||
| } | ||
| } catch (const std::exception& e) { | ||
| throw doris::Exception( | ||
| ErrorCode::INVALID_ARGUMENT, | ||
| "Invalid Input argument \"{}\" of function format, error: {}", format, | ||
| e.what()); | ||
| } | ||
| result_data_column->insert_data(res.data(), res.length()); | ||
| } | ||
| } | ||
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| template <typename ColVecData, typename T> | ||
| void execute_for_others_arg(std::vector<ColumnPtr>& argument_columns, | ||
| ColumnString* result_data_column, size_t argument_size, | ||
| size_t input_rows_count) const { | ||
| const auto& format_column = assert_cast<const ColumnString&>(*argument_columns[0].get()); | ||
| for (int i = 0; i < input_rows_count; ++i) { | ||
| auto format = format_column.get_data_at(i).to_string_view(); | ||
| std::string res; | ||
| fmt::dynamic_format_arg_store<fmt::format_context> args; | ||
| if constexpr (std::is_same_v<ColVecData, ColumnString>) { | ||
| for (int col = 1; col < argument_size; ++col) { | ||
| const auto& arg_column_data = | ||
| assert_cast<const ColVecData&>(*argument_columns[col].get()); | ||
| args.push_back(arg_column_data.get_data_at(i).to_string()); | ||
| } | ||
| } else { | ||
| for (int col = 1; col < argument_size; ++col) { | ||
| const auto& arg_column_data = | ||
| assert_cast<const ColVecData&>(*argument_columns[col].get()).get_data(); | ||
| args.push_back(arg_column_data[i]); | ||
| } | ||
| } | ||
| try { | ||
| res = fmt::vformat(format, args); | ||
| } catch (const std::exception& e) { | ||
| throw doris::Exception( | ||
| ErrorCode::INVALID_ARGUMENT, | ||
| "Invalid Input argument \"{}\" of function format, error: {}", format, | ||
| e.what()); | ||
| } | ||
| result_data_column->insert_data(res.data(), res.length()); | ||
| } | ||
| } | ||
| }; | ||
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| void register_function_format(SimpleFunctionFactory& factory) { | ||
| factory.register_function<FunctionFormatNumber>(); | ||
| factory.register_function<FunctionFormat>(); | ||
| } | ||
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| } // namespace doris::vectorized |
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