143 lines
5.2 KiB
C++
143 lines
5.2 KiB
C++
/*------------------------------------------------------------------------------*
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* Architecture & Implementation of DBMS *
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*------------------------------------------------------------------------------*
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* Copyright 2022 Databases and Information Systems Group TU Dortmund *
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* Visit us at *
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* http://dbis.cs.tu-dortmund.de/cms/en/home/ *
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* *
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS *
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, *
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL *
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR *
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* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, *
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* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR *
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* OTHER DEALINGS IN THE SOFTWARE. *
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* *
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* Authors: *
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* Maximilian Berens <maximilian.berens@tu-dortmund.de> *
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* Roland Kühn <roland.kuehn@cs.tu-dortmund.de> *
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* Jan Mühlig <jan.muehlig@tu-dortmund.de> *
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*------------------------------------------------------------------------------*
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*/
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#pragma once
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#include "custom_command_interface.h"
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#include <network/server.h>
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namespace beedb::io::command
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{
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class ShowCommand final : public CustomCommandInterface
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{
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public:
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ShowCommand() = default;
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~ShowCommand() override = default;
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[[nodiscard]] std::optional<ExecutionResult> execute(const std::string ¶meters, Executor &executor,
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ExecutionCallback &execution_callback) override;
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[[nodiscard]] std::string help() override
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{
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return std::string("Syntax> :show [tables,indices,columns]{1}");
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};
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};
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class ExplainCommand final : public CustomCommandInterface
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{
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public:
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ExplainCommand() = default;
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~ExplainCommand() override = default;
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[[nodiscard]] std::optional<ExecutionResult> execute(const std::string &input, Executor &executor,
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ExecutionCallback &execution_callback) override;
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[[nodiscard]] std::string help() override
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{
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return std::string("Syntax> :explain <SQL-Statement>");
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};
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};
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class SetCommand final : public CustomCommandInterface
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{
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public:
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explicit SetCommand(Config &config) : _config(config)
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{
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}
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~SetCommand() override = default;
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[[nodiscard]] std::optional<ExecutionResult> execute(const std::string &input, Executor &executor,
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ExecutionCallback &execution_callback) override;
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[[nodiscard]] std::string help() override
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{
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return std::string("Syntax> :set <Argument Name> <Numerical Value>");
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};
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private:
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Config &_config;
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};
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class GetCommand final : public CustomCommandInterface
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{
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public:
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explicit GetCommand(Config &config) : _config(config)
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{
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}
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~GetCommand() override = default;
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[[nodiscard]] std::optional<ExecutionResult> execute(const std::string &input, Executor &executor,
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ExecutionCallback &execution_callback) override;
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[[nodiscard]] std::string help() override
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{
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return std::string("Syntax> :get [<Argument Name>]?");
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};
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private:
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Config &_config;
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};
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class StatsCommand final : public CustomCommandInterface
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{
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public:
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explicit StatsCommand(Database &db) : _stats(db.system_statistics()), _db(db)
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{
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}
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~StatsCommand() override = default;
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/**
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* @brief execute This triggers computation of statistics for a specified,
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* existing table. After confirming that the table exists,
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* computations are triggered.
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* @param input the table name
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* @return the plan that computes the statistics
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*/
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[[nodiscard]] std::optional<ExecutionResult> execute(const std::string &input, Executor &executor,
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ExecutionCallback &execution_callback) override;
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[[nodiscard]] std::string help() override
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{
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return std::string("Syntax> :stats <Table Name>");
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};
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private:
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statistic::SystemStatistics &_stats;
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Database &_db;
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};
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class StopServerCommand final : public CustomCommandInterface
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{
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public:
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explicit StopServerCommand(network::Server *server) : _server(server)
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{
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}
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~StopServerCommand() override = default;
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[[nodiscard]] std::optional<ExecutionResult> execute(const std::string ¶meters, Executor &executor,
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ExecutionCallback &execution_callback) override;
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[[nodiscard]] std::string help() override
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{
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return std::string("Syntax> :stop");
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}
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private:
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network::Server *_server;
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};
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} // namespace beedb::io::command
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