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81 lines
1.9 KiB
C++
81 lines
1.9 KiB
C++
#include "ORCBlockInputFormat.h"
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#if USE_ORC
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#include <Formats/FormatFactory.h>
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#include <IO/ReadBufferFromMemory.h>
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#include <IO/WriteHelpers.h>
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#include <IO/copyData.h>
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#include <arrow/adapters/orc/adapter.h>
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#include <arrow/io/memory.h>
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#include "ArrowBufferedStreams.h"
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#include "ArrowColumnToCHColumn.h"
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namespace DB
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{
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namespace ErrorCodes
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{
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extern const int BAD_ARGUMENTS;
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extern const int CANNOT_READ_ALL_DATA;
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}
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ORCBlockInputFormat::ORCBlockInputFormat(ReadBuffer & in_, Block header_) : IInputFormat(std::move(header_), in_)
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{
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}
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Chunk ORCBlockInputFormat::generate()
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{
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Chunk res;
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const Block & header = getPort().getHeader();
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if (in.eof())
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return res;
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arrow::Status open_status = arrow::adapters::orc::ORCFileReader::Open(asArrowFile(in), arrow::default_memory_pool(), &file_reader);
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if (!open_status.ok())
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throw Exception(open_status.ToString(), ErrorCodes::BAD_ARGUMENTS);
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std::shared_ptr<arrow::Table> table;
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arrow::Status read_status = file_reader->Read(&table);
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if (!read_status.ok())
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throw Exception{"Error while reading ORC data: " + read_status.ToString(),
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ErrorCodes::CANNOT_READ_ALL_DATA};
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ArrowColumnToCHColumn::arrowTableToCHChunk(res, table, header, "ORC");
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return res;
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}
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void ORCBlockInputFormat::resetParser()
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{
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IInputFormat::resetParser();
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file_reader.reset();
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}
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void registerInputFormatProcessorORC(FormatFactory &factory)
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{
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factory.registerInputFormatProcessor(
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"ORC",
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[](ReadBuffer &buf,
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const Block &sample,
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const RowInputFormatParams &,
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const FormatSettings & /* settings */)
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{
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return std::make_shared<ORCBlockInputFormat>(buf, sample);
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});
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}
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}
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#else
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namespace DB
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{
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class FormatFactory;
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void registerInputFormatProcessorORC(FormatFactory &)
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{
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}
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}
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#endif
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