ClickHouse/dbms/include/DB/Storages/StorageSystemParts.h
2014-07-29 19:21:09 +04:00

44 lines
1.0 KiB
C++
Raw Blame History

This file contains ambiguous Unicode characters

This file contains Unicode characters that might be confused with other characters. If you think that this is intentional, you can safely ignore this warning. Use the Escape button to reveal them.

#pragma once
#include <Poco/SharedPtr.h>
#include <DB/Storages/IStorage.h>
#include <DB/Interpreters/Context.h>
namespace DB
{
using Poco::SharedPtr;
/** Реализует системную таблицу tables, которая позволяет получить информацию о всех таблицах.
*/
class StorageSystemParts : public IStorage
{
public:
static StoragePtr create(const std::string & name_, const Context & context_);
std::string getName() const { return "SystemParts"; }
std::string getTableName() const { return name; }
const NamesAndTypesList & getColumnsList() const { return columns; }
BlockInputStreams read(
const Names & column_names,
ASTPtr query,
const Settings & settings,
QueryProcessingStage::Enum & processed_stage,
size_t max_block_size = DEFAULT_BLOCK_SIZE,
unsigned threads = 1);
private:
const std::string name;
const Context & context;
NamesAndTypesList columns;
StorageSystemParts(const std::string & name_, const Context & context_);
};
}