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32 lines
703 B
C++
32 lines
703 B
C++
#pragma once
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#include <DB/DataStreams/IBlockInputStream.h>
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#include <DB/DataStreams/IRowInputStream.h>
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namespace DB
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{
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/** Преобразует поток для чтения данных по блокам в поток для чтения данных по строкам.
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*/
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class RowInputStreamFromBlockInputStream : public IRowInputStream
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{
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public:
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explicit RowInputStreamFromBlockInputStream(BlockInputStreamPtr block_input_);
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bool read(Row & row) override;
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void readPrefix() override { block_input->readPrefix(); };
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void readSuffix() override { block_input->readSuffix(); };
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private:
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BlockInputStreamPtr block_input;
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size_t pos;
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size_t current_rows;
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Block current_block;
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};
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}
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