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44 lines
1.1 KiB
C++
44 lines
1.1 KiB
C++
#pragma once
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#include <Poco/SharedPtr.h>
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#include <DB/Core/Block.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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using Poco::SharedPtr;
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/** Интерфейс потока для вывода данных в формате tsv.
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*/
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class TabSeparatedRowOutputStream : public IRowOutputStream
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{
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public:
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/** with_names - выводить в первой строке заголовок с именами столбцов
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* with_types - выводить на следующей строке заголовок с именами типов
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*/
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TabSeparatedRowOutputStream(WriteBuffer & ostr_, const Block & sample_, bool with_names_ = false, bool with_types_ = false);
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void writeField(const Field & field);
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void writeFieldDelimiter();
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void writeRowEndDelimiter();
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void writePrefix();
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RowOutputStreamPtr clone() { return new TabSeparatedRowOutputStream(ostr, sample, with_names, with_types); }
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protected:
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WriteBuffer & ostr;
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const Block sample;
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bool with_names;
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bool with_types;
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DataTypes data_types;
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size_t field_number;
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};
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}
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