Soprano  2.7.5
/builddir/build/BUILD/soprano-2.7.5/soprano/iteratorbackend.h
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00001 /* 
00002  * This file is part of Soprano Project.
00003  *
00004  * Copyright (C) 2006 Daniele Galdi <daniele.galdi@gmail.com>
00005  * Copyright (C) 2007 Sebastian Trueg <trueg@kde.org>
00006  *
00007  * This library is free software; you can redistribute it and/or
00008  * modify it under the terms of the GNU Library General Public
00009  * License as published by the Free Software Foundation; either
00010  * version 2 of the License, or (at your option) any later version.
00011  *
00012  * This library is distributed in the hope that it will be useful,
00013  * but WITHOUT ANY WARRANTY; without even the implied warranty of
00014  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00015  * Library General Public License for more details.
00016  *
00017  * You should have received a copy of the GNU Library General Public License
00018  * along with this library; see the file COPYING.LIB.  If not, write to
00019  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
00020  * Boston, MA 02110-1301, USA.
00021  */
00022 
00023 #ifndef SOPRANO_ITERATOR_BACKEND_H
00024 #define SOPRANO_ITERATOR_BACKEND_H
00025 
00026 #include "soprano_export.h"
00027 #include "error.h"
00028 
00029 namespace Soprano {
00030 
00039     template<class T> class IteratorBackend : public Error::ErrorCache
00040     {
00041     public:
00042         virtual ~IteratorBackend() {}
00043 
00054         virtual bool next() = 0;
00055 
00066         virtual T current() const = 0;
00067 
00076         virtual void close() = 0;
00077 
00078     protected:
00079         IteratorBackend() {}
00080     };
00081 }
00082 
00083 #endif