thumbsdbschemaupdater.h

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/* ============================================================
 *
 * This file is a part of digiKam project
 * https://www.digikam.org
 *
 * Date        : 2009-05-29
 * Description : Thumbnail DB schema update
 *
 * Copyright (C) 2007-2009 by Marcel Wiesweg <marcel dot wiesweg at gmx dot de>
 * Copyright (C) 2010-2022 by Gilles Caulier <caulier dot gilles at gmail dot com>
 *
 * 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 2, 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.
 *
 * ============================================================ */
 
#ifndef DIGIKAM_THUMBS_DB_SCHEMA_UPDATER_H
#define DIGIKAM_THUMBS_DB_SCHEMA_UPDATER_H
 
// Local includes
 
#include "digikam_export.h"
 
namespace Digikam
{
 
class ThumbsDbAccess;
class InitializationObserver;
 
class DIGIKAM_EXPORT ThumbsDbSchemaUpdater
{
public:
 
    static int schemaVersion();
 
public:
 
    explicit ThumbsDbSchemaUpdater(ThumbsDbAccess* const dbAccess);
    ~ThumbsDbSchemaUpdater();
 
    bool update();
    void setObserver(InitializationObserver* const observer);
 
private:
 
    bool startUpdates();
    bool makeUpdates();
    bool createDatabase();
    bool createTables();
    bool createIndices();
    bool createTriggers();
    bool updateV1ToV2();
    bool updateV2ToV3();
 
private:
 
    // Disable
    ThumbsDbSchemaUpdater(const ThumbsDbSchemaUpdater&)            = delete;
    ThumbsDbSchemaUpdater& operator=(const ThumbsDbSchemaUpdater&) = delete;
 
    class Private;
    Private* const d;
};
 
} // namespace Digikam
 
#endif // DIGIKAM_THUMBS_DB_SCHEMA_UPDATER_H