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syndication/rdf

  • syndication
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node.h
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#ifndef SYNDICATION_RDF_NODE_H
23#define SYNDICATION_RDF_NODE_H
24
25#include <QtCore/QString>
26#include <syndication/ksyndication_export.h>
27#include <boost/shared_ptr.hpp>
28
29namespace Syndication {
30namespace RDF {
31
32class Model;
33class Node;
34class NodeVisitor;
35//@cond PRIVATE
36typedef boost::shared_ptr<Node> NodePtr;
37//@endcond
38
43class SYNDICATION_EXPORT Node
44{
45 public:
46
50 virtual ~Node();
51
58 virtual void accept(NodeVisitor* visitor, NodePtr ptr);
59
66 virtual bool operator==(const Node& other) const = 0;
67
73 virtual Node* clone() const = 0;
74
78 virtual bool isNull() const = 0;
79
83 virtual bool isResource() const = 0;
84
88 virtual bool isProperty() const = 0;
89
93 virtual bool isLiteral() const = 0;
94
98 virtual bool isSequence() const = 0;
99
103 virtual bool isAnon() const = 0;
104
109 virtual unsigned int id() const = 0;
110
116 virtual QString text() const = 0;
117
122 virtual void setModel(const Model& model) = 0;
123
128 virtual void setId(unsigned int id) = 0;
129
130 protected:
131
135 static unsigned int idCounter;
136};
137
138} // namespace RDF
139} // namespace Syndication
140
141#endif // SYNDICATION_RDF_NODE_H
Syndication::RDF::Model
An RDF model, a set of RDF statements.
Definition: model.h:50
Syndication::RDF::NodeVisitor
Visitor interface, following the Visitor design pattern.
Definition: nodevisitor.h:58
Syndication::RDF::Node
an RDF node, abstract baseclass for all RDF node types, like resources and literals
Definition: node.h:44
Syndication::RDF::Node::operator==
virtual bool operator==(const Node &other) const =0
checks whether two nodes are equal.
Syndication::RDF::Node::isResource
virtual bool isResource() const =0
returns whether this node is a resource
Syndication::RDF::Node::isSequence
virtual bool isSequence() const =0
returns whether this node is an RDF sequence
Syndication::RDF::Node::isNull
virtual bool isNull() const =0
returns whether this node is a null node
Syndication::RDF::Node::clone
virtual Node * clone() const =0
returns a copy of the object.
Syndication::RDF::Node::text
virtual QString text() const =0
returns a textual representation of the node.
Syndication::RDF::Node::isLiteral
virtual bool isLiteral() const =0
returns whether this node is a literal
Syndication::RDF::Node::isProperty
virtual bool isProperty() const =0
returns whether this node is a property
Syndication::RDF::Node::setModel
virtual void setModel(const Model &model)=0
used in Model
Syndication::RDF::Node::idCounter
static unsigned int idCounter
used to generate unique IDs for node objects
Definition: node.h:135
Syndication::RDF::Node::isAnon
virtual bool isAnon() const =0
returns whether this node is an anonymous resource
Syndication::RDF::Node::setId
virtual void setId(unsigned int id)=0
used in Model
Syndication::RDF::Node::id
virtual unsigned int id() const =0
the identifier of this node.
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