exceptions.h

/*
 * LMDB Abstraction Layer.
 * Copyright (C) 2023  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/>.
 */
 
#pragma once
 
#include <stdexcept>
#include <string>
#include <optional>
 
namespace LMDBAL {

class Exception : public std::exception {
public:
    Exception();
    virtual ~Exception();
 
    virtual std::string getMessage() const = 0;             
 
    const char* what() const noexcept( true ) override;     
};

class Directory : public Exception {
public:
    Directory(const std::string& path);
 
    std::string getMessage() const;
private:
    std::string path;
};

class Closed : public Exception {
public:
    Closed(const std::string& 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 CursorNotReady : public Exception {
public:
    CursorNotReady(const std::string& operation, const std::string& dbName, const std::string& tableName);
 
    std::string getMessage() const;
private:
    std::string operation;
    std::string dbName;
    std::string tableName;
};

class CursorEmpty : public Exception {
public:
    CursorEmpty(const std::string& operation);
 
    std::string getMessage() const;
private:
    std::string operation;
};

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

class NotFound : public 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 StorageDuplicate : public Exception {
public:
    StorageDuplicate(const std::string& dbName, const std::string& tableName);
 
    std::string getMessage() const;
private:
    std::string dbName;
    std::string tableName;
};

class Exist : public 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 TransactionTerminated : public Exception {
public:
    TransactionTerminated(const std::string& dbName, const std::string& tableName, const std::string& action = "");
 
    std::string getMessage() const;
private:
    std::string dbName;
    std::string tableName;
    std::string action;
};

class Unknown : public 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;
};
 
}