leaves12138 commented on code in PR #22: URL: https://github.com/apache/paimon-cpp/pull/22#discussion_r3315133379
########## src/paimon/common/data/binary_row_writer.cpp: ########## @@ -0,0 +1,181 @@ +/* + * 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. + */ + +#include "paimon/common/data/binary_row_writer.h" + +#include <cassert> +#include <optional> +#include <string> +#include <string_view> +#include <utility> + +#include "arrow/type.h" +#include "arrow/util/checked_cast.h" +#include "fmt/format.h" +#include "paimon/common/data/binary_string.h" +#include "paimon/common/memory/memory_segment.h" +#include "paimon/common/utils/date_time_utils.h" +#include "paimon/data/decimal.h" +#include "paimon/data/timestamp.h" +#include "paimon/memory/bytes.h" +#include "paimon/memory/memory_pool.h" +#include "paimon/status.h" + +namespace paimon { + +BinaryRowWriter::BinaryRowWriter(BinaryRow* row, int32_t initial_size, MemoryPool* pool) + : null_bits_size_in_bytes_(BinaryRow::CalculateBitSetWidthInBytes(row->GetFieldCount())), + fixed_size_(row->GetFixedLengthPartSize()) { + cursor_ = fixed_size_; + row_ = row; + segment_ = MemorySegment::Wrap(Bytes::AllocateBytes(fixed_size_ + initial_size, pool)); + row_->PointTo(segment_, 0, segment_.Size()); + pool_ = pool; +} + +Result<BinaryRowWriter::FieldSetterFunc> BinaryRowWriter::CreateFieldSetter( + int32_t field_idx, const std::shared_ptr<arrow::DataType>& field_type) { + arrow::Type::type type = field_type->id(); + BinaryRowWriter::FieldSetterFunc field_setter; + switch (type) { + case arrow::Type::type::BOOL: { + field_setter = [field_idx](const VariantType& field, BinaryRowWriter* writer) -> void { + return writer->WriteBoolean(field_idx, DataDefine::GetVariantValue<bool>(field)); + }; + break; + } + case arrow::Type::type::INT8: { + field_setter = [field_idx](const VariantType& field, BinaryRowWriter* writer) -> void { + return writer->WriteByte(field_idx, DataDefine::GetVariantValue<char>(field)); + }; + break; + } + case arrow::Type::type::INT16: { + field_setter = [field_idx](const VariantType& field, BinaryRowWriter* writer) -> void { + return writer->WriteShort(field_idx, DataDefine::GetVariantValue<int16_t>(field)); + }; + break; + } + case arrow::Type::type::INT32: { + field_setter = [field_idx](const VariantType& field, BinaryRowWriter* writer) -> void { + return writer->WriteInt(field_idx, DataDefine::GetVariantValue<int32_t>(field)); + }; + break; + } + case arrow::Type::type::INT64: { + field_setter = [field_idx](const VariantType& field, BinaryRowWriter* writer) -> void { + return writer->WriteLong(field_idx, DataDefine::GetVariantValue<int64_t>(field)); + }; + break; + } + case arrow::Type::type::FLOAT: { + field_setter = [field_idx](const VariantType& field, BinaryRowWriter* writer) -> void { + return writer->WriteFloat(field_idx, DataDefine::GetVariantValue<float>(field)); + }; + break; + } + case arrow::Type::type::DOUBLE: { + field_setter = [field_idx](const VariantType& field, BinaryRowWriter* writer) -> void { + return writer->WriteDouble(field_idx, DataDefine::GetVariantValue<double>(field)); + }; + break; + } + case arrow::Type::type::DATE32: { + field_setter = [field_idx](const VariantType& field, BinaryRowWriter* writer) -> void { + return writer->WriteInt(field_idx, DataDefine::GetVariantValue<int32_t>(field)); + }; + break; + } + case arrow::Type::type::STRING: { + field_setter = [field_idx](const VariantType& field, BinaryRowWriter* writer) -> void { + const auto* view = DataDefine::GetVariantPtr<std::string_view>(field); + if (view) { + return writer->WriteStringView(field_idx, *view); + } + return writer->WriteString(field_idx, + DataDefine::GetVariantValue<BinaryString>(field)); + }; + break; + } + case arrow::Type::type::BINARY: { + field_setter = [field_idx](const VariantType& field, BinaryRowWriter* writer) -> void { + const auto* view = DataDefine::GetVariantPtr<std::string_view>(field); + if (view) { + return writer->WriteStringView(field_idx, *view); + } + return writer->WriteBinary( + field_idx, *DataDefine::GetVariantValue<std::shared_ptr<Bytes>>(field)); + }; + break; + } + case arrow::Type::type::TIMESTAMP: { + auto timestamp_type = + arrow::internal::checked_pointer_cast<arrow::TimestampType>(field_type); + int32_t precision = DateTimeUtils::GetPrecisionFromType(timestamp_type); + field_setter = [field_idx, precision](const VariantType& field, + BinaryRowWriter* writer) -> void { + if (DataDefine::IsVariantNull(field)) { + if (!Timestamp::IsCompact(precision)) { + writer->WriteTimestamp(field_idx, std::nullopt, precision); + } else { + writer->SetNullAt(field_idx); + } + return; + } + return writer->WriteTimestamp( + field_idx, DataDefine::GetVariantValue<Timestamp>(field), precision); + }; + return field_setter; + } + case arrow::Type::type::DECIMAL: { Review Comment: Correction: this comment was inaccurate. Arrow C++ defines `arrow::Type::DECIMAL` as a compatibility alias of `arrow::Type::DECIMAL128`, so `arrow::decimal128(...)` is handled by this `case arrow::Type::DECIMAL` branch. Please ignore this comment; no enum change is needed here. -- 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: [email protected] For queries about this service, please contact Infrastructure at: [email protected]
