mirror of
https://github.com/ClickHouse/ClickHouse.git
synced 2024-12-15 02:41:59 +00:00
69 lines
1.5 KiB
C++
69 lines
1.5 KiB
C++
#pragma once
|
|
#include "config_formats.h"
|
|
#if USE_ARROW || USE_ORC || USE_PARQUET
|
|
|
|
#include <arrow/io/interfaces.h>
|
|
|
|
namespace DB
|
|
{
|
|
|
|
class ReadBuffer;
|
|
class SeekableReadBuffer;
|
|
class WriteBuffer;
|
|
|
|
class ArrowBufferedOutputStream : public arrow::io::OutputStream
|
|
{
|
|
public:
|
|
explicit ArrowBufferedOutputStream(WriteBuffer & out_);
|
|
|
|
// FileInterface
|
|
arrow::Status Close() override;
|
|
|
|
arrow::Result<int64_t> Tell() const override;
|
|
|
|
bool closed() const override { return !is_open; }
|
|
|
|
// Writable
|
|
arrow::Status Write(const void * data, int64_t length) override;
|
|
|
|
private:
|
|
WriteBuffer & out;
|
|
int64_t total_length = 0;
|
|
bool is_open = false;
|
|
|
|
ARROW_DISALLOW_COPY_AND_ASSIGN(ArrowBufferedOutputStream);
|
|
};
|
|
|
|
class RandomAccessFileFromSeekableReadBuffer : public arrow::io::RandomAccessFile
|
|
{
|
|
public:
|
|
RandomAccessFileFromSeekableReadBuffer(SeekableReadBuffer & in_, off_t file_size_);
|
|
|
|
arrow::Result<int64_t> GetSize() override;
|
|
|
|
arrow::Status Close() override;
|
|
|
|
arrow::Result<int64_t> Tell() const override;
|
|
|
|
bool closed() const override { return !is_open; }
|
|
|
|
arrow::Result<int64_t> Read(int64_t nbytes, void * out) override;
|
|
|
|
arrow::Result<std::shared_ptr<arrow::Buffer>> Read(int64_t nbytes) override;
|
|
|
|
arrow::Status Seek(int64_t position) override;
|
|
|
|
private:
|
|
SeekableReadBuffer & in;
|
|
off_t file_size;
|
|
bool is_open = false;
|
|
|
|
ARROW_DISALLOW_COPY_AND_ASSIGN(RandomAccessFileFromSeekableReadBuffer);
|
|
};
|
|
|
|
std::shared_ptr<arrow::io::RandomAccessFile> asArrowFile(ReadBuffer & in);
|
|
|
|
}
|
|
|
|
#endif
|