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diff --git a/raul/RDFWorld.hpp b/raul/RDFWorld.hpp
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+/* 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_WORLD_HPP
+#define RAUL_RDF_WORLD_HPP
+
+#include <stdexcept>
+#include <string>
+#include <librdf.h>
+#include <boost/utility.hpp>
+#include <raul/Namespaces.hpp>
+#include <raul/RDFNode.hpp>
+
+namespace Raul {
+namespace RDF {
+
+
+class World : public boost::noncopyable {
+public:
+	World();
+	~World();
+	
+	Node blank_id();
+
+	void        add_prefix(const std::string& prefix, const std::string& uri);
+	std::string expand_uri(const std::string& uri) const;
+	std::string qualify(const std::string& uri) const;
+
+	const Namespaces& prefixes() const { return _prefixes; }
+
+	librdf_world* world() { return _world; }
+
+private:
+	void setup_prefixes();
+
+	librdf_world* _world;
+	Namespaces    _prefixes;
+
+	size_t _next_blank_id;
+};
+
+
+} // namespace RDF
+} // namespace Raul
+
+#endif // RAUL_RDF_WORLD_HPP