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commit f968e7e7f0d84c89fd26dea1d541bd9f6041d7c8 Author: Alexey Milovidov <milovidov@yandex-team.ru> Date: Tue Feb 16 06:11:29 2016 +0300 Addition [#METR-2944]. commit 7524981fa7c4f22929dd5009444a0ae28500f620 Author: Alexey Milovidov <milovidov@yandex-team.ru> Date: Tue Feb 16 06:08:43 2016 +0300 Fixed error (incomplete) [#METR-2944]. commit 2f1e7bf9f46cd9ce958ade9041c00ce067940fd2 Author: Alexey Milovidov <milovidov@yandex-team.ru> Date: Tue Feb 16 05:37:43 2016 +0300 Improving performance of row formats [#METR-2944]. commit 9848910f235863c9571ef1ebe0d87d4929ee283c Author: Alexey Milovidov <milovidov@yandex-team.ru> Date: Tue Feb 16 00:37:12 2016 +0300 Improving performance of text formats [#METR-2944]. commit 3aedc7fd784af962e64ffdd10ec23ac53827d8e2 Author: Alexey Milovidov <milovidov@yandex-team.ru> Date: Tue Feb 16 00:18:00 2016 +0300 Improving performance of row formats [#METR-2944]. commit cb5932c2b0385604477e69c8262dc31a4bb4b23b Author: Alexey Milovidov <milovidov@yandex-team.ru> Date: Mon Feb 15 00:53:27 2016 +0300 Fixed error. commit 42863fd4eddeef594e846c598b92877b6ff86fa6 Author: Alexey Milovidov <milovidov@yandex-team.ru> Date: Sun Feb 14 23:13:46 2016 +0300 Improving performance of row formats [#METR-2944]. commit 71c6fb19a85a79297433ceb486fdb97e551d964f Author: Alexey Milovidov <milovidov@yandex-team.ru> Date: Sun Feb 14 16:58:56 2016 +0300 Improving performance of row formats [#METR-2944].
65 lines
1.5 KiB
C++
65 lines
1.5 KiB
C++
#pragma once
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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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/** Поток для вывода данных в формате XML.
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*/
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class XMLRowOutputStream : public IRowOutputStream
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{
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public:
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XMLRowOutputStream(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 writeRowEndDelimiter() override;
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void writePrefix() override;
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void writeSuffix() override;
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void flush() override
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{
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ostr->next();
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if (validating_ostr)
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dst_ostr.next();
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}
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void setRowsBeforeLimit(size_t rows_before_limit_) override
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{
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applied_limit = true;
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rows_before_limit = rows_before_limit_;
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}
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void setTotals(const Block & totals_) override { totals = totals_; }
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void setExtremes(const Block & extremes_) override { extremes = extremes_; }
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String getContentType() const override { return "application/xml; charset=UTF-8"; }
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protected:
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void writeRowsBeforeLimitAtLeast();
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virtual void writeTotals();
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virtual void writeExtremes();
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WriteBuffer & dst_ostr;
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std::unique_ptr<WriteBuffer> validating_ostr; /// Валидирует UTF-8 последовательности.
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WriteBuffer * ostr;
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size_t field_number = 0;
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size_t row_count = 0;
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bool applied_limit = false;
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size_t rows_before_limit = 0;
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NamesAndTypes fields;
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Names field_tag_names;
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Block totals;
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Block extremes;
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};
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}
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