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53 lines
1.3 KiB
C++
53 lines
1.3 KiB
C++
#pragma once
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#include <DB/Core/Block.h>
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#include <DB/Core/Names.h>
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#include <DB/IO/WriteBuffer.h>
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#include <DB/DataStreams/IRowOutputStream.h>
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namespace DB
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{
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/** Поток для вывода данных в формате "каждое значение на своей строке".
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*/
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class VerticalRowOutputStream : public IRowOutputStream
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{
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public:
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VerticalRowOutputStream(WriteBuffer & ostr_, const Block & sample_);
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void writeField(const IColumn & column, const IDataType & type, size_t row_num) override;
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void writeRowStartDelimiter() override;
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void writeRowBetweenDelimiter() override;
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void flush() override { ostr.next(); }
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protected:
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virtual void writeValue(const IColumn & column, const IDataType & type, size_t row_num) const;
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WriteBuffer & ostr;
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const Block sample;
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Names names;
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size_t field_number;
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size_t row_number;
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using Pads_t = std::vector<String>;
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Pads_t pads;
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};
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/** То же самое, но строки выводятся без экранирования.
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*/
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class VerticalRawRowOutputStream : public VerticalRowOutputStream
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{
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public:
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VerticalRawRowOutputStream(WriteBuffer & ostr_, const Block & sample_)
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: VerticalRowOutputStream(ostr_, sample_) {}
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protected:
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void writeValue(const IColumn & column, const IDataType & type, size_t row_num) const override;
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};
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}
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