ClickHouse/dbms/include/DB/Databases/DatabaseOrdinary.h

#pragma once

#include <DB/Databases/DatabaseMemory.h>


namespace DB
{

/** Default engine of databases.
  * It stores tables list in filesystem using list of .sql files,
  *  that contain declaration of table represented by SQL ATTACH TABLE query.
  */
class DatabaseOrdinary : public DatabaseMemory
{
protected:
	const String path;

public:
	DatabaseOrdinary(const String & name_, const String & path_);

	String getEngineName() const override { return "Ordinary"; }

	void loadTables(Context & context, ThreadPool * thread_pool, bool has_force_restore_data_flag) override;

	void createTable(const String & table_name, const StoragePtr & table, const ASTPtr & query, const String & engine) override;
	void removeTable(const String & table_name) override;

	void renameTable(const Context & context, const String & table_name, IDatabase & to_database, const String & to_table_name) override;

	time_t getTableMetadataModificationTime(const String & table_name) override;

	ASTPtr getCreateQuery(const String & table_name) const override;

	void shutdown() override;
	void drop() override;

	void alterTable(
		const Context & context,
		const String & name,
		const NamesAndTypesList & columns,
		const NamesAndTypesList & materialized_columns,
		const NamesAndTypesList & alias_columns,
		const ColumnDefaults & column_defaults,
		const ASTModifier & engine_modifier) override;
};

}