statement.h

/*
 * 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_STATEMENT_H
#define SYNDICATION_RDF_STATEMENT_H

#include <syndication/rdf/property.h>

#include <boost/shared_ptr.hpp>

class QString;

namespace Syndication {
namespace RDF {

//@cond PRIVATE
class Statement;
typedef boost::shared_ptr<Statement> StatementPtr;
//@endcond

class SYNDICATION_EXPORT Statement
{
    friend class Model;
    public:

        Statement();
        
        Statement(const Statement& other);
        
        Statement(ResourcePtr subject, PropertyPtr predicate, NodePtr object);
        
        virtual ~Statement();

        Statement& operator=(const Statement& other);
        
        virtual bool operator==(const Statement& other) const;

        virtual bool isNull() const;

        virtual ResourcePtr subject() const;

        virtual PropertyPtr predicate() const;

        virtual NodePtr object() const;

        virtual ResourcePtr asResource() const;

        virtual QString asString() const;


    private:
        class StatementPrivate;
        boost::shared_ptr<StatementPrivate> d;
};


} // namespace RDF
} // namespace Syndication

#endif // SYNDICATION_RDF_STATEMENT_H