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diff --git a/src/libs/client/Serializer.hpp b/src/libs/client/Serializer.hpp
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+++ b/src/libs/client/Serializer.hpp
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+/* This file is part of Ingen.
+ * Copyright (C) 2007 Dave Robillard <http://drobilla.net>
+ * 
+ * Ingen 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.
+ * 
+ * Ingen 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 SERIALIZER_H
+#define SERIALIZER_H
+
+#include <map>
+#include <utility>
+#include <string>
+#include <stdexcept>
+#include <cassert>
+#include <raul/SharedPtr.hpp>
+#include <raul/Path.hpp>
+#include <raul/Atom.hpp>
+#include <raul/RDFWorld.hpp>
+#include <raul/RDFModel.hpp>
+#include "ObjectModel.hpp"
+
+namespace Ingen {
+namespace Client {
+
+class PluginModel;
+class PatchModel;
+class NodeModel;
+class PortModel;
+class ConnectionModel;
+class PresetModel;
+
+
+/** Serializes Ingen objects (patches, nodes, etc) to RDF.
+ *
+ * \ingroup IngenClient
+ */
+class Serializer
+{
+public:
+	Serializer(Raul::RDF::World& world);
+
+	void   start_to_filename(const string& filename);
+	void   start_to_string();
+
+	void   serialize(SharedPtr<ObjectModel> object)           throw (std::logic_error);
+	void   serialize_connection(SharedPtr<ConnectionModel> c) throw (std::logic_error);
+	
+	string finish();
+
+private:
+	enum Mode { TO_FILE, TO_STRING };
+
+	void setup_prefixes();
+
+	void serialize_plugin(SharedPtr<PluginModel> p);
+
+	void serialize_patch(SharedPtr<PatchModel> p, const Raul::RDF::Node& id);
+	void serialize_node(SharedPtr<NodeModel> n, const Raul::RDF::Node& id);
+	void serialize_port(SharedPtr<PortModel> p, const Raul::RDF::Node& id);
+	
+	Raul::RDF::Node path_to_node_id(const Path& path);
+
+	typedef std::map<Path, Raul::RDF::Node> NodeMap;
+	Mode              _mode;
+	NodeMap           _node_map;
+	string            _base_uri;
+	Raul::RDF::World& _world;
+	Raul::RDF::Model* _model;
+};
+
+
+} // namespace Client
+} // namespace Ingen
+
+#endif // SERIALIZER_H