mirror of
https://github.com/ClickHouse/ClickHouse.git
synced 2024-12-12 09:22:05 +00:00
37 lines
778 B
C++
37 lines
778 B
C++
|
#pragma once
|
|||
|
|
|
|||
|
|
#include <DB/Core/Block.h>
|
|||
|
|
#include <DB/IO/WriteBuffer.h>
|
|||
|
|
#include <DB/DataStreams/IRowOutputStream.h>
|
|||
|
|
|
|||
|
|
|
|||
|
|
namespace DB
|
|||
|
|
{
|
|||
|
|
|
|||
|
|
/** Поток для вывода данных в формате JSON, по объекту на каждую строчку.
|
|||
|
|
* Не валидирует UTF-8.
|
|||
|
|
*/
|
|||
|
|
class JSONEachRowRowOutputStream : public IRowOutputStream
|
|||
|
|
{
|
|||
|
|
public:
|
|||
|
|
JSONEachRowRowOutputStream(WriteBuffer & ostr_, const Block & sample);
|
|||
|
|
|
|||
|
|
void writeField(const IColumn & column, const IDataType & type, size_t row_num) override;
|
|||
|
|
void writeFieldDelimiter() override;
|
|||
|
|
void writeRowStartDelimiter() override;
|
|||
|
|
void writeRowEndDelimiter() override;
|
|||
|
|
|
|||
|
|
void flush() override
|
|||
|
|
{
|
|||
|
|
ostr.next();
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
private:
|
|||
|
|
WriteBuffer & ostr;
|
|||
|
|
size_t field_number = 0;
|
|||
|
|
Names fields;
|
|||
|
|
};
|
|||
|
|
|
|||
|
|
}
|
|||
|
|
|