ClickHouse/dbms/include/DB/DataStreams/NullBlockInputStream.h
2015-06-08 23:22:02 +03:00

26 lines
388 B
C++

#pragma once
#include <DB/DataStreams/IBlockInputStream.h>
namespace DB
{
/** Пустой поток блоков.
*/
class NullBlockInputStream : public IBlockInputStream
{
public:
Block read() override { return Block(); }
String getName() const override { return "Null"; }
String getID() const override
{
std::stringstream res;
res << this;
return res.str();
}
};
}