forked from blue/squawk
119 lines
3.2 KiB
C++
119 lines
3.2 KiB
C++
/*
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* Squawk messenger.
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* Copyright (C) 2019 Yury Gubich <blue@macaw.me>
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef CORE_ARCHIVE_H
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#define CORE_ARCHIVE_H
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#include <QObject>
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#include "../global.h"
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#include <lmdb.h>
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#include "../exception.h"
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#include <list>
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namespace Core {
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class Archive : public QObject
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{
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Q_OBJECT
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public:
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Archive(const QString& jid, QObject* parent = 0);
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~Archive();
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void open(const QString& account);
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void close();
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bool addElement(const Shared::Message& message);
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unsigned int addElements(const std::list<Shared::Message>& messages);
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Shared::Message getElement(const QString& id);
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Shared::Message oldest();
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QString oldestId();
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Shared::Message newest();
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QString newestId();
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void clear();
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long unsigned int size() const;
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std::list<Shared::Message> getBefore(int count, const QString& id);
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bool isFromTheBeginning();
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void setFromTheBeginning(bool is);
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public:
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const QString jid;
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public:
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class Directory:
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public Utils::Exception
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{
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public:
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Directory(const std::string& p_path):Exception(), path(p_path){}
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std::string getMessage() const{return "Can't create directory for database at " + path;}
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private:
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std::string path;
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};
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class Closed:
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public Utils::Exception
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{
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public:
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Closed(const std::string& op, const std::string& acc):Exception(), operation(op), account(acc){}
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std::string getMessage() const{return "An attempt to perform operation " + operation + " on closed archive for " + account;}
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private:
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std::string operation;
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std::string account;
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};
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class NotFound:
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public Utils::Exception
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{
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public:
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NotFound(const std::string& k, const std::string& acc):Exception(), key(k), account(acc){}
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std::string getMessage() const{return "Element for id " + key + " wasn't found in database " + account;}
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private:
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std::string key;
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std::string account;
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};
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class Empty:
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public Utils::Exception
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{
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public:
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Empty(const std::string& acc):Exception(), account(acc){}
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std::string getMessage() const{return "An attempt to read ordered elements from database " + account + " but it's empty";}
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private:
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std::string account;
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};
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private:
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bool opened;
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bool fromTheBeginning;
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MDB_env* environment;
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MDB_dbi main;
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MDB_dbi order;
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MDB_dbi stats;
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bool _isFromTheBeginning();
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void printOrder();
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void printKeys();
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};
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}
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#endif // CORE_ARCHIVE_H
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