ClickHouse/dbms/include/DB/DataStreams/IRowInputStream.h
Alexey Milovidov 8b3afeb60d Squashed commit of the following:
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].
2016-02-16 19:39:39 +03:00

33 lines
929 B
C++

#pragma once
#include <boost/noncopyable.hpp>
#include <Poco/SharedPtr.h>
namespace DB
{
class Block;
/** Интерфейс потока для чтения данных по строкам.
*/
class IRowInputStream : private boost::noncopyable
{
public:
/** Прочитать следующую строку и положить её в блок.
* Если строк больше нет - вернуть false.
*/
virtual bool read(Block & block) = 0;
/// Прочитать разделитель
virtual void readRowBetweenDelimiter() {}; /// разделитель между строками
virtual void readPrefix() {}; /// разделитель перед началом результата
virtual void readSuffix() {}; /// разделитель после конца результата
virtual ~IRowInputStream() {}
};
using RowInputStreamPtr = Poco::SharedPtr<IRowInputStream>;
}