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syndication/rdf

  • syndication
  • rdf
sequence.cpp
1/*
2 * This file is part of the syndication library
3 *
4 * Copyright (C) 2006 Frank Osterfeld <osterfeld@kde.org>
5 *
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Library General Public
8 * License as published by the Free Software Foundation; either
9 * version 2 of the License, or (at your option) any later version.
10 *
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Library General Public License for more details.
15 *
16 * You should have received a copy of the GNU Library General Public License
17 * along with this library; see the file COPYING.LIB. If not, write to
18 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
19 * Boston, MA 02110-1301, USA.
20 *
21 */
22
23#include "sequence.h"
24#include "node.h"
25#include "nodevisitor.h"
26
27#include <QtCore/QList>
28#include <QtCore/QString>
29
30namespace Syndication {
31namespace RDF {
32
33class Sequence::SequencePrivate
34{
35 public:
36
37 QList<NodePtr> items;
38};
39
40Sequence::Sequence() : Resource(), d()
41{
42}
43
44Sequence::Sequence(const QString& uri)
45 : Resource(uri), d(new SequencePrivate)
46{
47}
48
49Sequence::Sequence(const Sequence& other) : Resource(other)
50{
51 *this = other;
52}
53
54Sequence::~Sequence()
55{
56}
57void Sequence::accept(NodeVisitor* visitor, NodePtr ptr)
58{
59 SequencePtr sptr = boost::static_pointer_cast<Sequence>(ptr);
60 if (!visitor->visitSequence(sptr))
61 Resource::accept(visitor, ptr);
62}
63
64Sequence* Sequence::clone() const
65{
66 return new Sequence(*this);
67}
68
69Sequence& Sequence::operator=(const Sequence& other)
70{
71 Resource::operator=(other);
72 d = other.d;
73 return *this;
74}
75
76void Sequence::append(NodePtr node)
77{
78 if (d)
79 d->items.append(node);
80}
81
82QList<NodePtr> Sequence::items() const
83{
84 return d ? d->items : QList<NodePtr>();
85}
86
87bool Sequence::isSequence() const
88{
89 return true;
90}
91
92} // namespace RDF
93} // namespace Syndication
Syndication::RDF::NodeVisitor
Visitor interface, following the Visitor design pattern.
Definition nodevisitor.h:58
Syndication::RDF::Resource
Resources are the entities in the RDF graph.
Definition resource.h:52
Syndication::RDF::Resource::accept
virtual void accept(NodeVisitor *visitor, NodePtr ptr)
Used by visitors for double dispatch.
Definition resource.cpp:143
Syndication::RDF::Resource::operator=
Resource & operator=(const Resource &other)
assigns a resource
Definition resource.cpp:89
Syndication::RDF::Sequence
Sequence container, a sequence contains an ordered list of RDF nodes.
Definition sequence.h:46
Syndication::RDF::Sequence::items
virtual QList< NodePtr > items() const
the list of the list items in the sequence, in the specified order
Definition sequence.cpp:82
Syndication::RDF::Sequence::accept
virtual void accept(NodeVisitor *visitor, NodePtr ptr)
Used by visitors for double dispatch.
Definition sequence.cpp:57
Syndication::RDF::Sequence::append
virtual void append(NodePtr node)
appends a node at the end of the sequence
Definition sequence.cpp:76
Syndication::RDF::Sequence::~Sequence
virtual ~Sequence()
destructor
Definition sequence.cpp:54
Syndication::RDF::Sequence::Sequence
Sequence()
creates a null sequence
Definition sequence.cpp:40
Syndication::RDF::Sequence::isSequence
virtual bool isSequence() const
returns true
Definition sequence.cpp:87
Syndication::RDF::Sequence::operator=
virtual Sequence & operator=(const Sequence &other)
assigns another sequence
Definition sequence.cpp:69
Syndication::RDF::Sequence::clone
virtual Sequence * clone() const
creates a copy of the sequence
Definition sequence.cpp:64
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