114 lines
4.7 KiB
C++
114 lines
4.7 KiB
C++
// Licensed to the Apache Software Foundation (ASF) under one
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// or more contributor license agreements. See the NOTICE file
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// distributed with this work for additional information
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// regarding copyright ownership. The ASF licenses this file
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// to you under the Apache License, Version 2.0 (the
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// "License"); you may not use this file except in compliance
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// with the License. You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing,
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// software distributed under the License is distributed on an
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// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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// KIND, either express or implied. See the License for the
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// specific language governing permissions and limitations
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// under the License.
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#pragma once
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#include "vec/columns/columns_number.h"
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#include "vec/common/string_ref.h"
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#include "vec/core/types.h"
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#include "vec/data_types/data_type_date_time.h"
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#include "vec/utils/util.hpp"
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namespace doris::vectorized {
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class FunctionConvertTZ : public IFunction {
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public:
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static constexpr auto name = "convert_tz";
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static FunctionPtr create() { return std::make_shared<FunctionConvertTZ>(); }
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String get_name() const override { return name; }
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size_t get_number_of_arguments() const override { return 3; }
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DataTypePtr get_return_type_impl(const DataTypes& arguments) const override {
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return make_nullable(std::make_shared<DataTypeDateTime>());
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}
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bool use_default_implementation_for_constants() const override { return true; }
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bool use_default_implementation_for_nulls() const override { return false; }
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Status execute_impl(FunctionContext* context, Block& block, const ColumnNumbers& arguments,
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size_t result, size_t input_rows_count) override {
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auto result_column = ColumnDateTime::create();
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auto result_null_map_column = ColumnUInt8::create(input_rows_count, 0);
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ColumnPtr argument_columns[3];
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for (int i = 0; i < 3; ++i) {
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argument_columns[i] =
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block.get_by_position(arguments[i]).column->convert_to_full_column_if_const();
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if (auto* nullable = check_and_get_column<ColumnNullable>(*argument_columns[i])) {
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// Danger: Here must dispose the null map data first! Because
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// argument_columns[i]=nullable->get_nested_column_ptr(); will release the mem
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// of column nullable mem of null map
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VectorizedUtils::update_null_map(result_null_map_column->get_data(),
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nullable->get_null_map_data());
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argument_columns[i] = nullable->get_nested_column_ptr();
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}
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}
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execute_straight(context, assert_cast<const ColumnDateTime*>(argument_columns[0].get()),
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assert_cast<const ColumnString*>(argument_columns[1].get()),
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assert_cast<const ColumnString*>(argument_columns[2].get()),
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assert_cast<ColumnDateTime*>(result_column.get()),
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assert_cast<ColumnUInt8*>(result_null_map_column.get())->get_data(),
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input_rows_count);
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block.get_by_position(result).column =
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ColumnNullable::create(std::move(result_column), std::move(result_null_map_column));
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return Status::OK();
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}
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private:
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void execute_straight(FunctionContext* context, const ColumnDateTime* date_column,
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const ColumnString* from_tz_column, const ColumnString* to_tz_column,
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ColumnDateTime* result_column, NullMap& result_null_map,
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size_t input_rows_count) {
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for (size_t i = 0; i < input_rows_count; i++) {
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if (result_null_map[i]) {
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result_column->insert_default();
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continue;
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}
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StringRef from_tz = from_tz_column->get_data_at(i);
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StringRef to_tz = to_tz_column->get_data_at(i);
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VecDateTimeValue ts_value =
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binary_cast<Int64, VecDateTimeValue>(date_column->get_element(i));
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int64_t timestamp;
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if (!ts_value.unix_timestamp(×tamp, from_tz.to_string())) {
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result_null_map[i] = true;
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result_column->insert_default();
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continue;
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}
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VecDateTimeValue ts_value2;
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if (!ts_value2.from_unixtime(timestamp, to_tz.to_string())) {
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result_null_map[i] = true;
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result_column->insert_default();
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continue;
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}
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result_column->insert(binary_cast<VecDateTimeValue, Int64>(ts_value2));
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}
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}
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};
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} // namespace doris::vectorized
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