resourcemanager.h

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/*
 * This file is part of the Nepomuk KDE project.
 * Copyright (C) 2006-2009 Sebastian Trueg <trueg@kde.org>
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Library General Public
 * License as published by the Free Software Foundation; either
 * version 2 of the License, or (at your option) any later version.
 *
 * This library 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
 * Library General Public License for more details.
 *
 * You should have received a copy of the GNU Library General Public License
 * along with this library; see the file COPYING.LIB.  If not, write to
 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
 * Boston, MA 02110-1301, USA.
 */

#ifndef _NEPOMUK2_RESOURCE_MANAGER_H_
#define _NEPOMUK2_RESOURCE_MANAGER_H_

#include "nepomuk_export.h"

#include <QtCore/QObject>
#include <QtCore/QUrl>


namespace Soprano {
    class Model;
}

namespace Nepomuk2 {
    class Resource;
    class Variant;
    class ResourceManagerHelper;
    class ResourceManagerPrivate;
    namespace Types {
        class Class;
        class Property;
    }

    class NEPOMUK_EXPORT ResourceManager : public QObject
    {
        Q_OBJECT

    public:
        static ResourceManager* instance();

        int init();

        bool initialized() const;

        Soprano::Model* mainModel();

        void setOverrideMainModel( Soprano::Model* model );

        void removeResource( const QString& uri );

        QUrl generateUniqueUri( const QString& label );

        void notifyError( const QString& uri, int errorCode );

    Q_SIGNALS:
        void resourceModified( const QString& uri );

        void error( const QString& uri, int errorCode );

        void nepomukSystemStarted();

        void nepomukSystemStopped();

    private Q_SLOTS:
        void slotPropertyAdded(const Nepomuk2::Resource &res, const Nepomuk2::Types::Property &prop, const QVariant &value);
        void slotPropertyRemoved(const Nepomuk2::Resource &res, const Nepomuk2::Types::Property &prop, const QVariant &value);
        void slotResourceRemoved(const QUrl& uri, const QList<QUrl>& types);

        void cleanupResources();

    private:
        friend class Nepomuk2::Resource;
        friend class Nepomuk2::ResourceManagerPrivate;

        ResourceManager();
        ~ResourceManager();

        static ResourceManager* s_instance;

        ResourceManagerPrivate* const d;

        Q_PRIVATE_SLOT( d, void _k_storageServiceInitialized(bool) )
        Q_PRIVATE_SLOT( d, void _k_dbusServiceUnregistered(QString) )
    };
}

#endif