Desktop Qt based XMPP messenger https://macaw.me
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/*
* 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_ARCHIVE_H
#define CORE_ARCHIVE_H
#include <QObject>
#include "../global.h"
#include <lmdb.h>
#include "../exception.h"
#include <list>
namespace Core {
class Archive : public QObject
{
Q_OBJECT
public:
Archive(const QString& jid, QObject* parent = 0);
~Archive();
void open(const QString& account);
void close();
bool addElement(const Shared::Message& message);
unsigned int addElements(const std::list<Shared::Message>& messages);
Shared::Message getElement(const QString& id);
Shared::Message oldest();
QString oldestId();
Shared::Message newest();
QString newestId();
void clear();
long unsigned int size() const;
std::list<Shared::Message> getBefore(int count, const QString& id);
bool isFromTheBeginning();
void setFromTheBeginning(bool is);
public:
const QString jid;
public:
class Directory:
public Utils::Exception
{
public:
Directory(const std::string& p_path):Exception(), path(p_path){}
std::string getMessage() const{return "Can't create directory for database at " + path;}
private:
std::string path;
};
class Closed:
public Utils::Exception
{
public:
Closed(const std::string& op, const std::string& acc):Exception(), operation(op), account(acc){}
std::string getMessage() const{return "An attempt to perform operation " + operation + " on closed archive for " + account;}
private:
std::string operation;
std::string account;
};
class NotFound:
public Utils::Exception
{
public:
NotFound(const std::string& k, const std::string& acc):Exception(), key(k), account(acc){}
std::string getMessage() const{return "Element for id " + key + " wasn't found in database " + account;}
private:
std::string key;
std::string account;
};
class Empty:
public Utils::Exception
{
public:
Empty(const std::string& acc):Exception(), account(acc){}
std::string getMessage() const{return "An attempt to read ordered elements from database " + account + " but it's empty";}
private:
std::string account;
};
private:
bool opened;
bool fromTheBeginning;
MDB_env* environment;
MDB_dbi main;
MDB_dbi order;
MDB_dbi stats;
bool _isFromTheBeginning();
void printOrder();
void printKeys();
};
}
#endif // CORE_ARCHIVE_H