lmdbal/exceptions.h

// Squawk messenger.
// Copyright (C) 2019  Yury Gubich <blue@macaw.me>
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program.  If not, see <http://www.gnu.org/licenses/>.

#ifndef CORE_DATABASE_EXCEPTIONS_H
#define CORE_DATABASE_EXCEPTIONS_H

#include <stdexcept>
#include <string>
#include <optional>

#include "database.h"

class DataBase::Exception : public std::exception
{
public:
    Exception();
    virtual ~Exception();

    virtual std::string getMessage() const = 0;

    const char* what() const noexcept( true );
};

class DataBase::Directory: public DataBase::Exception {
public:
    Directory(const std::string& path);

    std::string getMessage() const;
private:
    std::string path;
};

class DataBase::Closed : public DataBase::Exception {
public:
    Closed(const std::string& p_operation, const std::string& dbName, const std::optional<std::string>& tableName = std::nullopt);

    std::string getMessage() const;
private:
    std::string operation;
    std::string dbName;
    std::optional<std::string> tableName;
};

class DataBase::Opened : public DataBase::Exception {
public:
    Opened(const std::string& dbName, const std::string& action);

    std::string getMessage() const;
private:
    std::string dbName;
    std::string action;
};

class DataBase::NotFound : public DataBase::Exception {
public:
    NotFound(const std::string& key, const std::string& dbName, const std::string& tableName);

    std::string getMessage() const;
private:
    std::string key;
    std::string dbName;
    std::string tableName;
};

class DataBase::Exist : public DataBase::Exception {
public:
    Exist(const std::string& key, const std::string& dbName, const std::string& tableName);

    std::string getMessage() const;
private:
    std::string key;
    std::string dbName;
    std::string tableName;
};

class DataBase::Unknown : public DataBase::Exception {
public:
    Unknown(const std::string& dbName, const std::string& message, const std::optional<std::string>& tableName = std::nullopt);

    std::string getMessage() const;
private:
    std::string dbName;
    std::optional<std::string> tableName;
    std::string msg;
};

#endif //CORE_DATABASE_EXCEPTIONS_H