ontologyloader.h

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/* This file is part of the KDE Project
   Copyright (c) 2007-2012 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 version 2 as published by the Free Software Foundation.

   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 _NEPOMUK_SERVER_ONTOLOGY_LOADER_H_
#define _NEPOMUK_SERVER_ONTOLOGY_LOADER_H_

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

namespace Soprano {
    class Model;
}

class KJob;


// Hint: Using QString instead of QUrl for URIs since this API will be exported via DBus and not used otherwise
namespace Nepomuk2 {
    class OntologyLoader : public QObject
    {
        Q_OBJECT

    public:
        OntologyLoader( Soprano::Model* model, QObject* parent = 0 );
        ~OntologyLoader();

    public Q_SLOTS:
        QString findOntologyContext( const QString& uri );

        void updateLocalOntologies();

        void updateAllLocalOntologies();

        void importOntology( const QString& url );

    Q_SIGNALS:
        void ontologyUpdateFinished(bool changesDone);

        void ontologyUpdated( const QString& uri );

        void ontologyUpdateFailed( const QString& uri, const QString& error );

    private Q_SLOTS:
        // a little async updating
        void updateNextOntology();
        void slotGraphRetrieverResult( KJob* job );

    private:
        class Private;
        Private* const d;
    };
}

#endif