Soprano 2.9.4
iteratorbackend.h
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1/*
2 * This file is part of Soprano Project.
3 *
4 * Copyright (C) 2006 Daniele Galdi <daniele.galdi@gmail.com>
5 * Copyright (C) 2007 Sebastian Trueg <trueg@kde.org>
6 *
7 * This library is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Library General Public
9 * License as published by the Free Software Foundation; either
10 * version 2 of the License, or (at your option) any later version.
11 *
12 * This library is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Library General Public License for more details.
16 *
17 * You should have received a copy of the GNU Library General Public License
18 * along with this library; see the file COPYING.LIB. If not, write to
19 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
20 * Boston, MA 02110-1301, USA.
21 */
22
23#ifndef SOPRANO_ITERATOR_BACKEND_H
24#define SOPRANO_ITERATOR_BACKEND_H
25
26#include "soprano_export.h"
27#include "error.h"
28
29namespace Soprano {
30
39 template<class T> class IteratorBackend : public Error::ErrorCache
40 {
41 public:
42 virtual ~IteratorBackend() {}
43
54 virtual bool next() = 0;
55
66 virtual T current() const = 0;
67
76 virtual void close() = 0;
77
78 protected:
80 };
81}
82
83#endif
Core class of Soprano's exception system.
Definition error.h:235
The actual work in a Iterator instance is done by an IteratorBackend.
virtual void close()=0
virtual bool next()=0
virtual T current() const =0