mirror of
https://github.com/ClickHouse/ClickHouse.git
synced 2024-12-14 02:12:21 +00:00
946a126799
Buffer for reading from a compressed file with just checking checksums of the compressed blocks, without any decompression, so result can be proxied.
28 lines
630 B
C++
28 lines
630 B
C++
#pragma once
|
|
|
|
#include <Compression/CompressedReadBufferBase.h>
|
|
#include <IO/BufferWithOwnMemory.h>
|
|
#include <IO/ReadBuffer.h>
|
|
|
|
|
|
namespace DB
|
|
{
|
|
|
|
/** A buffer for reading from a compressed file with just checking checksums of
|
|
* the compressed blocks, without any decompression.
|
|
*/
|
|
class CheckingCompressedReadBuffer : public CompressedReadBufferBase, public ReadBuffer
|
|
{
|
|
protected:
|
|
bool nextImpl() override;
|
|
|
|
public:
|
|
CheckingCompressedReadBuffer(ReadBuffer & in_, bool allow_different_codecs_ = false)
|
|
: CompressedReadBufferBase(&in_, allow_different_codecs_)
|
|
, ReadBuffer(nullptr, 0)
|
|
{
|
|
}
|
|
};
|
|
|
|
}
|