ClickHouse/dbms/include/DB/Dictionaries/OwningBufferBlockInputStream.h
Andrey Mironov 95bb52b8e5 dbms: use PODArray with FlatDictionary [#METR-13298]
remove IDictionarySource::reset
2015-01-28 19:23:52 +03:00

33 lines
700 B
C++

#pragma once
#include <DB/IO/ReadBuffer.h>
#include <DB/DataStreams/IProfilingBlockInputStream.h>
#include <memory>
namespace DB
{
class OwningBufferBlockInputStream : public IProfilingBlockInputStream
{
public:
OwningBufferBlockInputStream(const BlockInputStreamPtr & stream, std::unique_ptr<ReadBuffer> buffer)
: stream{stream}, buffer{std::move(buffer)}
{
children.push_back(stream);
}
private:
Block readImpl() override { return stream->read(); }
String getName() const override { return "OwningBufferBlockInputStream"; }
String getID() const override {
return "OwningBuffer(" + stream->getID() + ")";
}
BlockInputStreamPtr stream;
std::unique_ptr<ReadBuffer> buffer;
};
}