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41 lines
750 B
C++
41 lines
750 B
C++
#pragma once
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#include "config_formats.h"
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#if USE_PARQUET
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#include <Processors/Formats/IInputFormat.h>
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namespace parquet::arrow { class FileReader; }
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namespace arrow { class Buffer; }
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namespace DB
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{
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class ParquetBlockInputFormat : public IInputFormat
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{
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public:
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ParquetBlockInputFormat(ReadBuffer & in_, Block header_);
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void resetParser() override;
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String getName() const override { return "ParquetBlockInputFormat"; }
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protected:
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Chunk generate() override;
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private:
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void prepareReader();
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private:
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std::unique_ptr<parquet::arrow::FileReader> file_reader;
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int row_group_total = 0;
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// indices of columns to read from Parquet file
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std::vector<int> column_indices;
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int row_group_current = 0;
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};
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}
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#endif
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