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35 lines
748 B
C++
35 lines
748 B
C++
#pragma once
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#include <DB/DataStreams/IProfilingBlockInputStream.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 SquashingBlockInputStream : public IProfilingBlockInputStream
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{
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public:
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SquashingBlockInputStream(BlockInputStreamPtr & src, size_t min_block_size_rows, size_t min_block_size_bytes);
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String getName() const override { return "Squashing"; }
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String getID() const override
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{
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std::stringstream res;
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res << "Squashing(" << children.at(0)->getID() << ")";
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return res.str();
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}
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protected:
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Block readImpl() override;
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private:
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SquashingTransform transform;
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bool all_read = false;
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};
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}
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