/*
 * This file is part of the syndication library
 *
 * Copyright (C) 2006 Frank Osterfeld <osterfeld@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 SYNDICATION_RDF_DUBLINCOREVOCAB_H
#define SYNDICATION_RDF_DUBLINCOREVOCAB_H

#include <syndication/rdf/property.h>

class QString;

namespace Syndication {
namespace RDF {

/**
 * Singleton holding RDF class and property constants of the Dublin Core
 * vocabulary. See http://dublincore.org/documents/dces/ for a
 * specification.
 *
 * @author Frank Osterfeld
 */
class SYNDICATION_EXPORT DublinCoreVocab
{
    public:

        /**
         * returns the singleton instance
         */
        static DublinCoreVocab* self();

        /**
         * destructor
         */
        ~DublinCoreVocab();
        
        /**
         * the namespace of the Dublin Core vocabulary, 
         * http://purl.org/dc/elements/1.1/
         */
        const QString& namespaceURI() const;

        /**
         * dc:contributor property. See DublinCore::contributor() for 
         * an explanation.
         */
        PropertyPtr contributor() const;

        /**
         * dc:creator property. See DublinCore::creator() for 
         * an explanation.
         */
        PropertyPtr creator() const;
        
        /**
         * dc:coverage property. See DublinCore::coverage() for 
         * an explanation.
         */
        PropertyPtr coverage() const;
        
        /**
         * dc:date property. See DublinCore::date() for 
         * an explanation.
         */
        PropertyPtr date() const;
        
        /**
         * dc:description property. See DublinCore::description() for 
         * an explanation.
         */
        PropertyPtr description() const;
        
        /**
         * dc:format property. See DublinCore::format() for 
         * an explanation.
         */
        PropertyPtr format() const;
        
        /**
         * dc:identifier property. See DublinCore::identifier() for 
         * an explanation.
         */
        PropertyPtr identifier() const;
        
        /**
         * dc:language property. See DublinCore::language() for 
         * an explanation.
         */
        PropertyPtr language() const;
        
        /**
         * dc:publisher property. See DublinCore::publisher() for 
         * an explanation.
         */
        PropertyPtr publisher() const;
        
        /**
         * dc:relation property. See DublinCore::relation() for 
         * an explanation.
         */
        PropertyPtr relation() const;
        
        /**
         * dc:rights property. See DublinCore::rights() for 
         * an explanation.
         */
        PropertyPtr rights() const;
        
        /**
         * dc:source property. See DublinCore::source() for 
         * an explanation.
         */
        PropertyPtr source() const;
        
        /**
         * dc:subject property. See DublinCore::subject() for 
         * an explanation.
         */
        PropertyPtr subject() const;
        
        /**
         * dc:title property. See DublinCore::title() for 
         * an explanation.
         */
        PropertyPtr title() const;
        
        /**
         * dc:type property. See DublinCore::type() for 
         * an explanation.
         */
        PropertyPtr type() const;

    private:
        DublinCoreVocab();

        class DublinCoreVocabPrivate;
        DublinCoreVocabPrivate * const d;
};

} // namespace RDF
} // namespace Syndication

#endif // SYNDICATION_RDF_DUBLINCOREVOCAB_H