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Diffstat (limited to 'raul/RDFNode.hpp')
-rw-r--r-- | raul/RDFNode.hpp | 79 |
1 files changed, 79 insertions, 0 deletions
diff --git a/raul/RDFNode.hpp b/raul/RDFNode.hpp new file mode 100644 index 0000000..8a09699 --- /dev/null +++ b/raul/RDFNode.hpp @@ -0,0 +1,79 @@ +/* This file is part of Raul. + * Copyright (C) 2007 Dave Robillard <http://drobilla.net> + * + * Raul is free software; you can redistribute it and/or modify it under the + * terms of the GNU General Public License as published by the Free Software + * Foundation; either version 2 of the License, or (at your option) any later + * version. + * + * Raul 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 General Public License for details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#ifndef RAUL_RDF_NODE_HPP +#define RAUL_RDF_NODE_HPP + +#include <stdexcept> +#include <string> +#include <librdf.h> +#include <raul/Atom.hpp> + +namespace Raul { +namespace RDF { + +class World; + + +class Node { +public: + enum Type { + UNKNOWN = LIBRDF_NODE_TYPE_UNKNOWN, + RESOURCE = LIBRDF_NODE_TYPE_RESOURCE, + LITERAL = LIBRDF_NODE_TYPE_LITERAL, + BLANK = LIBRDF_NODE_TYPE_BLANK + }; + + Node() : _node(NULL) {} + + Node(World& world, Type t, const std::string& s); + Node(World& world); + Node(librdf_node* node); + Node(const Node& other); + ~Node(); + + Type type() const { return ((_node) ? (Type)librdf_node_get_type(_node) : UNKNOWN); } + + librdf_node* get_node() const { return _node; } + + operator bool() const { return (_node != NULL); } + + const Node& operator=(const Node& other) { + if (_node) + librdf_free_node(_node); + _node = (other._node) ? librdf_new_node_from_node(other._node) : NULL; + return *this; + } + + std::string to_string() const; + std::string to_quoted_uri_string() const; + + bool is_int(); + int to_int(); + + bool is_float(); + float to_float(); + +private: + librdf_node* _node; +}; + + +} // namespace RDF +} // namespace Raul + +#endif // RAUL_RDF_NODE_HPP |