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33 lines
637 B
C++
33 lines
637 B
C++
#pragma once
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#include <DB/DataStreams/IBlockOutputStream.h>
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#include <DB/DataStreams/SquashingTransform.h>
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namespace DB
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{
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/** Merging consecutive blocks of stream to specified minimum size.
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*/
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class SquashingBlockOutputStream : public IBlockOutputStream
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{
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public:
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SquashingBlockOutputStream(BlockOutputStreamPtr & dst, size_t min_block_size_rows, size_t min_block_size_bytes);
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void write(const Block & block) override;
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void flush() override;
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void writePrefix() override;
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void writeSuffix() override;
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private:
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BlockOutputStreamPtr output;
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SquashingTransform transform;
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bool all_written = false;
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void finalize();
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};
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}
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