mirror of
https://github.com/ClickHouse/ClickHouse.git
synced 2024-12-01 20:12:02 +00:00
51 lines
1.3 KiB
C++
51 lines
1.3 KiB
C++
#pragma once
|
|
#include <Common/config.h>
|
|
#if USE_HDFS
|
|
|
|
#include <Storages/IStorage.h>
|
|
#include <Poco/URI.h>
|
|
#include <common/logger_useful.h>
|
|
#include <ext/shared_ptr_helper.h>
|
|
|
|
namespace DB
|
|
{
|
|
/**
|
|
* This class represents table engine for external hdfs files.
|
|
* Read method is supported for now.
|
|
*/
|
|
class StorageHDFS final : public ext::shared_ptr_helper<StorageHDFS>, public IStorage
|
|
{
|
|
friend struct ext::shared_ptr_helper<StorageHDFS>;
|
|
public:
|
|
String getName() const override { return "HDFS"; }
|
|
|
|
Pipes read(const Names & column_names,
|
|
const SelectQueryInfo & query_info,
|
|
const Context & context,
|
|
QueryProcessingStage::Enum processed_stage,
|
|
size_t max_block_size,
|
|
unsigned num_streams) override;
|
|
|
|
BlockOutputStreamPtr write(const ASTPtr & query, const Context & context) override;
|
|
|
|
protected:
|
|
StorageHDFS(const String & uri_,
|
|
const StorageID & table_id_,
|
|
const String & format_name_,
|
|
const ColumnsDescription & columns_,
|
|
const ConstraintsDescription & constraints_,
|
|
Context & context_,
|
|
const String & compression_method_);
|
|
|
|
private:
|
|
String uri;
|
|
String format_name;
|
|
Context & context;
|
|
String compression_method;
|
|
|
|
Logger * log = &Logger::get("StorageHDFS");
|
|
};
|
|
}
|
|
|
|
#endif
|