Clean up parser into generic form that can parse anything (rather than just the root patch from a document).

Support for parsing from a string.
Fix serialisation to a string.


git-svn-id: http://svn.drobilla.net/lad/ingen@1414 a436a847-0d15-0410-975c-d299462d15a1

10 files changed, 237 insertions, 111 deletions

diff --git a/src/libs/gui/LoadPatchWindow.cpp b/src/libs/gui/LoadPatchWindow.cpp
index 398eaf1f..4a86515a 100644
--- a/src/libs/gui/LoadPatchWindow.cpp
+++ b/src/libs/gui/LoadPatchWindow.cpp
@@ -120,9 +120,8 @@ LoadPatchWindow::ok_clicked()
 		return;
 
 	// If unset load_patch will load value
-	optional<const string&> name;
-	
-	optional<Path> parent;
+	optional<Path>   parent;
+	optional<Symbol> symbol;
 	
 	if (_poly_from_user_radio->get_active())
 		_initial_data.insert(make_pair("ingen:polyphony", _poly_spinbutton->get_value_as_int()));
@@ -137,7 +136,7 @@ LoadPatchWindow::ok_clicked()
 	hide();
 
 	App::instance().loader()->load_patch(true, get_uri(), "/",
-		_initial_data, parent, name);
+		_initial_data, parent, symbol);
 }			
 
 
diff --git a/src/libs/gui/LoadRemotePatchWindow.cpp b/src/libs/gui/LoadRemotePatchWindow.cpp
index d4a9329f..5d4bcb5c 100644
--- a/src/libs/gui/LoadRemotePatchWindow.cpp
+++ b/src/libs/gui/LoadRemotePatchWindow.cpp
@@ -136,9 +136,8 @@ LoadRemotePatchWindow::open_clicked()
 	cerr << "OPEN URI: " << uri << endl;
 	
 	// If unset load_patch will load values
-	optional<const string&> name;
-	
-	optional<Path> parent;
+	optional<Path>   parent;
+	optional<Symbol> symbol;
 	
 	if (_replace)
 		App::instance().engine()->clear_patch(_patch->path());
@@ -147,7 +146,7 @@ LoadRemotePatchWindow::open_clicked()
 		parent = _patch->path().parent();
 
 	App::instance().loader()->load_patch(true, uri, "/",
-		_initial_data, parent, name);
+		_initial_data, parent, symbol);
 	
 	hide();
 }			
diff --git a/src/libs/gui/LoadSubpatchWindow.cpp b/src/libs/gui/LoadSubpatchWindow.cpp
index cd3745dd..df954e48 100644
--- a/src/libs/gui/LoadSubpatchWindow.cpp
+++ b/src/libs/gui/LoadSubpatchWindow.cpp
@@ -145,12 +145,12 @@ LoadSubpatchWindow::ok_clicked()
 	assert(_patch);
 	
 	// If unset load_patch will load values
-	optional<const string&> name;
+	optional<Symbol> symbol;
 	string name_str = "";
 	
 	if (_name_from_user_radio->get_active()) {
 		name_str = _name_entry->get_text();
-		name = name_str;
+		symbol = Symbol::symbolify(name_str);
 	}
 
 	if (_poly_from_user_radio->get_active()) {
@@ -168,7 +168,7 @@ LoadSubpatchWindow::ok_clicked()
 		Atom& y = _initial_data["ingenuity:canvas-y"];
 		y = Atom(y.get_float() + 20.0f);
 
-		App::instance().loader()->load_patch(false, *i, "/", _initial_data, _patch->path(), name);
+		App::instance().loader()->load_patch(false, *i, "/", _initial_data, _patch->path(), symbol);
 	}
 
 	hide();
diff --git a/src/libs/gui/PatchCanvas.cpp b/src/libs/gui/PatchCanvas.cpp
index df6ba285..019851f0 100644
--- a/src/libs/gui/PatchCanvas.cpp
+++ b/src/libs/gui/PatchCanvas.cpp
@@ -540,7 +540,7 @@ void
 PatchCanvas::copy_selection()
 {
 	Serialiser serialiser(*App::instance().world(), App::instance().store());
-	serialiser.start_to_string("");
+	serialiser.start_to_string(_patch->path(), "");
 
 	for (list<boost::shared_ptr<Item> >::iterator m = _selected_items.begin(); m != _selected_items.end(); ++m) {
 		boost::shared_ptr<NodeModule> module = boost::dynamic_pointer_cast<NodeModule>(*m);
diff --git a/src/libs/gui/ThreadedLoader.cpp b/src/libs/gui/ThreadedLoader.cpp
index 8c8af828..d85d54a3 100644
--- a/src/libs/gui/ThreadedLoader.cpp
+++ b/src/libs/gui/ThreadedLoader.cpp
@@ -80,11 +80,11 @@ ThreadedLoader::_whipped()
 
 void
 ThreadedLoader::load_patch(bool                    merge,
-                           const string&           data_base_uri,
+                           const Glib::ustring&    data_base_uri,
                            const Path&             data_path,
                            GraphObject::Variables  engine_data,
                            optional<Path>          engine_parent,
-                           optional<const string&> engine_name)
+                           optional<Symbol>        engine_symbol)
 {
 	_mutex.lock();
 
@@ -94,18 +94,18 @@ ThreadedLoader::load_patch(bool                    merge,
 				sigc::mem_fun(_deprecated_loader, &DeprecatedLoader::load_patch),
 				data_base_uri,
 				engine_parent,
-				(engine_name) ? engine_name.get() : "",
+				(engine_symbol) ? engine_symbol.get() : "",
 				engine_data,
 				false)));
 	} else {
 		_events.push_back(sigc::hide_return(sigc::bind(
-				sigc::mem_fun(_parser.get(), &Ingen::Serialisation::Parser::parse),
+				sigc::mem_fun(_parser.get(), &Ingen::Serialisation::Parser::parse_document),
 				App::instance().world(),
 				App::instance().world()->engine.get(),
-				data_base_uri,
+				data_base_uri, // document
+				data_base_uri, // patch (root of document)
 				engine_parent,
-				(engine_name) ? engine_name.get() : "",
-				"",
+				engine_symbol,
 				engine_data)));
 	}
 	
diff --git a/src/libs/gui/ThreadedLoader.hpp b/src/libs/gui/ThreadedLoader.hpp
index ea4f652d..dd5909fe 100644
--- a/src/libs/gui/ThreadedLoader.hpp
+++ b/src/libs/gui/ThreadedLoader.hpp
@@ -62,11 +62,11 @@ public:
 	// (same core interface as Loader/Serialiser)
 	
 	void load_patch(bool                    merge,
-	                const string&           data_base_uri,
+	                const Glib::ustring&    data_base_uri,
 	                const Path&             data_path,
 	                GraphObject::Variables  engine_data,
-	                optional<Path>          engine_parent,
-	                optional<const string&> engine_name = optional<const string&>());
+	                optional<Path>          engine_parent = optional<Path>(),
+	                optional<Symbol>        engine_symbol = optional<Symbol>());
 	
 	void save_patch(SharedPtr<PatchModel> model, const string& filename);
 
diff --git a/src/libs/serialisation/Parser.cpp b/src/libs/serialisation/Parser.cpp
index cd132b3a..b34a3e47 100644
--- a/src/libs/serialisation/Parser.cpp
+++ b/src/libs/serialisation/Parser.cpp
@@ -20,6 +20,7 @@
 #include <locale.h>
 #include <glibmm/ustring.h>
 #include <redlandmm/Model.hpp>
+#include <redlandmm/Node.hpp>
 #include <redlandmm/Query.hpp>
 #include <raul/TableImpl.hpp>
 #include <raul/Atom.hpp>
@@ -34,6 +35,8 @@ using namespace Ingen::Shared;
 namespace Ingen {
 namespace Serialisation {
 
+#define NS_INGEN "http://drobilla.net/ns/ingen#"
+
 
 /** Parse a patch from RDF into a CommonInterface (engine or client).
  *
@@ -42,42 +45,145 @@ namespace Serialisation {
  * @return whether or not load was successful.
  */
 bool
-Parser::parse(Ingen::Shared::World*           world,
-              Ingen::Shared::CommonInterface* target,
-              const Glib::ustring&            document_uri,
-              boost::optional<Raul::Path>     parent,
-              std::string                     patch_name,
-              Glib::ustring                   patch_uri,
-              GraphObject::Variables          data)
+Parser::parse_document(
+		Ingen::Shared::World*                   world,
+		Ingen::Shared::CommonInterface*         target,
+		const Glib::ustring&                    document_uri,
+		Glib::ustring                           object_uri,
+		boost::optional<Raul::Path>             parent,
+		boost::optional<Raul::Symbol>           symbol,
+		boost::optional<GraphObject::Variables> data)
 {
-	setlocale(LC_NUMERIC, "C");
+	Redland::Model model(*world->rdf_world, document_uri, document_uri);
 
-	// FIXME: this whole thing is a mess
+	if (object_uri == "") {
+		object_uri = string("<") + document_uri + ">";
+		cout << "[Parser] Parsing document " << object_uri << endl;
+	} else {
+		object_uri = string("<") + object_uri + ">";
+		cout << "[Parser] Parsing " << object_uri << " from " << document_uri << endl;
+	}
 
-	std::set<Path> created;
+	return parse(world, target, model, document_uri, object_uri, parent, symbol, data);;
+}
 
-	Redland::Model model(*world->rdf_world, document_uri, document_uri);
 
-	if (patch_uri == "")
-		patch_uri = string("<") + document_uri + ">";
-	else
-		patch_uri = string("<") + patch_uri + ">";
+bool
+Parser::parse_string(
+		Ingen::Shared::World*                   world,
+		Ingen::Shared::CommonInterface*         target,
+		const Glib::ustring&                    str,
+		const Glib::ustring&                    base_uri,
+		Glib::ustring                           object_uri,
+		boost::optional<Raul::Path>             parent,
+		boost::optional<Raul::Symbol>           symbol,
+		boost::optional<GraphObject::Variables> data)
+{
+	Redland::Model model(*world->rdf_world, str.c_str(), str.length(), base_uri);
+
+	if (object_uri == "") {
+		object_uri = string("<") + base_uri + ">";
+		cout << "[Parser] Parsing document " << object_uri << endl;
+	} else {
+		object_uri = string("<") + object_uri + ">";
+		cout << "[Parser] Parsing " << object_uri << " from string" << endl;
+	}
+
+	return parse(world, target, model, base_uri, object_uri, parent, symbol, data);;
+}
+
+
+bool
+Parser::parse(
+		Ingen::Shared::World*                   world,
+		Ingen::Shared::CommonInterface*         target,
+		Redland::Model&                         model,
+		const Glib::ustring&                    base_uri,
+		Glib::ustring                           object_uri,
+		boost::optional<Raul::Path>             parent,
+		boost::optional<Raul::Symbol>           symbol,
+		boost::optional<GraphObject::Variables> data)
+{
+	Redland::Query query(*world->rdf_world, Glib::ustring(
+		"SELECT DISTINCT ?class WHERE { ") + object_uri + " a ?class . }");
+	
+	Redland::Query::Results results = query.run(*world->rdf_world, model);
+	
+	const Redland::Node patch_class(*world->rdf_world, Redland::Node::RESOURCE, NS_INGEN "Patch");
+	const Redland::Node node_class(*world->rdf_world, Redland::Node::RESOURCE, NS_INGEN "Node");
+	const Redland::Node port_class(*world->rdf_world, Redland::Node::RESOURCE, NS_INGEN "Port");
+
+	for (Redland::Query::Results::iterator i = results.begin(); i != results.end(); ++i) {
+		const Redland::Node rdf_class = (*i)["class"];
+		if (rdf_class == patch_class || rdf_class == node_class || rdf_class == port_class) {
+			Path path = parse_path(world, model, base_uri, object_uri, parent, symbol);
+			bool ret = false;
+			if (rdf_class == patch_class) {
+				ret = parse_patch(world, target, model, object_uri, path, data);
+				if (ret)
+					target->set_variable(path, "ingen:document", Atom(base_uri.c_str()));
+			} else if (rdf_class == node_class) {
+				cout << "NODE" << endl;
+			} else if (rdf_class == port_class) {
+				cout << "PORT" << endl;
+			}
+			return ret;
+		}
+	}
+
+	return false;
+}
 
-	cout << "[Parser] Loading " << patch_uri << endl;
 
-	size_t patch_poly = 1;
+Path
+Parser::parse_path(Ingen::Shared::World*          world,
+                   Redland::Model&                model,
+                   const Glib::ustring&           base_uri,
+                   const Glib::ustring&           object_uri,
+                   boost::optional<Raul::Path>&   parent,
+                   boost::optional<Raul::Symbol>& symbol)
+{
+	Redland::Query query(*world->rdf_world, Glib::ustring(
+		"SELECT DISTINCT ?sym WHERE { ") + object_uri + " ingen:symbol ?sym }");
 	
+	Redland::Query::Results results = query.run(*world->rdf_world, model);
+	if (results.size() > 0) {
+		symbol = (*results.begin())["sym"].to_string();
+	} else {
+		const string sym = base_uri.substr(base_uri.find_last_of("/")+1);
+		symbol = sym.substr(0, sym.find("."));
+	}
+
+	Path ret = (parent ? (parent.get().base() + symbol.get()) : Path("/"));
+	cout << "Parsing " << object_uri << " from " << base_uri << " as " << ret << endl;
+	return ret;
+}
+
+
+bool
+Parser::parse_patch(
+		Ingen::Shared::World*                   world,
+		Ingen::Shared::CommonInterface*         target,
+		Redland::Model&                         model,
+		const Glib::ustring&                    object_uri,
+		Raul::Path                              patch_path,
+		boost::optional<GraphObject::Variables> data=boost::optional<GraphObject::Variables>())
+{
+	std::set<Path> created;
+	uint32_t       patch_poly = 0;
+
 	/* Use parameter overridden polyphony, if given */
-	GraphObject::Variables::iterator poly_param = data.find("ingen:polyphony");
-	if (poly_param != data.end() && poly_param->second.type() == Atom::INT) {
-		patch_poly = poly_param->second.get_int32();
+	if (data) {
+		GraphObject::Variables::iterator poly_param = data.get().find("ingen:polyphony");
+		if (poly_param != data.get().end() && poly_param->second.type() == Atom::INT)
+			patch_poly = poly_param->second.get_int32();
+	}
 	
 	/* Get polyphony from file (mandatory if not specified in parameters) */
-	} else {
-		// FIXME: polyphony datatype?
+	if (patch_poly == 0) {
 		Redland::Query query(*world->rdf_world, Glib::ustring(
 			"SELECT DISTINCT ?poly WHERE {\n") +
-			patch_uri + " ingen:polyphony ?poly\n }");
+			object_uri + " ingen:polyphony ?poly\n }");
 
 		Redland::Query::Results results = query.run(*world->rdf_world, model);
 
@@ -88,42 +194,21 @@ Parser::parse(Ingen::Shared::World*           world,
 
 		const Redland::Node& poly_node = (*results.begin())["poly"];
 		assert(poly_node.is_int());
-		patch_poly = static_cast<size_t>(poly_node.to_int());
+		patch_poly = static_cast<uint32_t>(poly_node.to_int());
 	}
 
-	/* Get name (if available/necessary) */
-
-	if (patch_name == "") {	
-		patch_name = string(document_uri.substr(document_uri.find_last_of("/")+1));
-		if (patch_name.substr(patch_name.length()-10) == ".ingen.ttl")
-			patch_name = patch_name.substr(0, patch_name.length()-10);
-
-		Redland::Query query(*world->rdf_world, Glib::ustring(
-			"SELECT DISTINCT ?name WHERE {\n") +
-			patch_uri + " ingen:symbol ?name\n}");
-
-		Redland::Query::Results results = query.run(*world->rdf_world, model);
-
-		if (results.size() > 0)
-			patch_name = (*results.begin())["name"].to_string();
-	}
-
-	const Path patch_path = ( parent ? (parent.get().base() + patch_name) : Path("/") );
-	
-	cout << " as " << patch_path << endl;
-	
 	if (patch_path != "/")
 		target->new_patch(patch_path, patch_poly);
 	
 	/* Set document metadata (so File->Save doesn't prompt)
 	 * FIXME: This needs some thinking for multiple clients... */
-	target->set_variable(patch_path, "ingen:document", Atom(document_uri.c_str()));
+
 
 	/* Load (plugin) nodes */
 
 	Redland::Query query(*world->rdf_world, Glib::ustring(
 		"SELECT DISTINCT ?name ?plugin ?varkey ?varval ?poly WHERE {\n") +
-		patch_uri + " ingen:node       ?node .\n"
+		object_uri + " ingen:node       ?node .\n"
 		"?node        ingen:symbol     ?name ;\n"
 		"             ingen:plugin     ?plugin ;\n"
 		"             ingen:polyphonic ?poly .\n"
@@ -170,24 +255,24 @@ Parser::parse(Ingen::Shared::World*           world,
 	/* Load subpatches */
 
 	query = Redland::Query(*world->rdf_world, Glib::ustring(
-		"SELECT DISTINCT ?patch ?name WHERE {\n") +
-		patch_uri + " ingen:node   ?patch .\n"
+		"SELECT DISTINCT ?patch ?symbol WHERE {\n") +
+		object_uri + " ingen:node   ?patch .\n"
 		"?patch       a            ingen:Patch ;\n"
-		"             ingen:symbol ?name .\n"
+		"             ingen:symbol ?symbol .\n"
 		"}");
 
 	results = query.run(*world->rdf_world, model);
 	
 	for (Redland::Query::Results::iterator i = results.begin(); i != results.end(); ++i) {
 
-		const string name  = (*i)["name"].to_string();
-		const string patch = (*i)["patch"].to_string();
+		const string symbol = (*i)["symbol"].to_string();
+		const string patch  = (*i)["patch"].to_string();
 
-		const Path subpatch_path = patch_path.base() + (string)name;
+		const Path subpatch_path = patch_path.base() + symbol;
 
 		if (created.find(subpatch_path) == created.end()) {
 			created.insert(subpatch_path);
-			parse(world, target, document_uri, patch_path, name, patch);
+			parse_patch(world, target, model, Glib::ustring(object_uri + subpatch_path), subpatch_path);
 		}
 	}
 
@@ -198,7 +283,7 @@ Parser::parse(Ingen::Shared::World*           world,
 
 	query = Redland::Query(*world->rdf_world, Glib::ustring(
 		"SELECT DISTINCT ?nodename ?portname ?portval WHERE {\n") +
-		patch_uri + " ingen:node   ?node .\n"
+		object_uri + " ingen:node   ?node .\n"
 		"?node        ingen:symbol ?nodename ;\n"
 		"             ingen:port   ?port .\n"
 		"?port        ingen:symbol ?portname ;\n"
@@ -225,7 +310,7 @@ Parser::parse(Ingen::Shared::World*           world,
 
 	query = Redland::Query(*world->rdf_world, Glib::ustring(
 		"SELECT DISTINCT ?port ?type ?name ?datatype ?varkey ?varval ?portval WHERE {\n") +
-		patch_uri + " ingen:port     ?port .\n"
+		object_uri + " ingen:port     ?port .\n"
 		"?port        a              ?type ;\n"
 		"             a              ?datatype ;\n"
 		"             ingen:symbol   ?name .\n"
@@ -272,7 +357,7 @@ Parser::parse(Ingen::Shared::World*           world,
 
 	query = Redland::Query(*world->rdf_world, Glib::ustring(
 		"SELECT DISTINCT ?srcnodename ?srcname ?dstnodename ?dstname WHERE {\n") +
-		patch_uri +  "ingen:node ?srcnode ;\n"
+		object_uri +  "ingen:node ?srcnode ;\n"
 		"             ingen:node ?dstnode .\n"
 		"?srcnode     ingen:port ?src ;\n"
 		"             ingen:symbol ?srcnodename .\n"
@@ -301,7 +386,7 @@ Parser::parse(Ingen::Shared::World*           world,
 
 	query = Redland::Query(*world->rdf_world, Glib::ustring(
 		"SELECT DISTINCT ?srcname ?dstnodename ?dstname WHERE {\n") +
-		patch_uri + " ingen:port ?src ;\n"
+		object_uri + " ingen:port ?src ;\n"
 		"             ingen:node ?dstnode .\n"
 		"?dstnode     ingen:port ?dst ;\n"
 		"             ingen:symbol ?dstnodename .\n"
@@ -327,7 +412,7 @@ Parser::parse(Ingen::Shared::World*           world,
 
 	query = Redland::Query(*world->rdf_world, Glib::ustring(
 		"SELECT DISTINCT ?srcnodename ?srcname ?dstname WHERE {\n") +
-		patch_uri + " ingen:port ?dst ;\n"
+		object_uri + " ingen:port ?dst ;\n"
 		"             ingen:node ?srcnode .\n"
 		"?srcnode     ingen:port ?src ;\n"
 		"             ingen:symbol ?srcnodename .\n"
@@ -353,7 +438,7 @@ Parser::parse(Ingen::Shared::World*           world,
 
 	query = Redland::Query(*world->rdf_world, Glib::ustring(
 		"SELECT DISTINCT ?srcname ?dstname WHERE {\n") +
-		patch_uri + " ingen:port ?src ;\n"
+		object_uri + " ingen:port ?src ;\n"
 		"             ingen:port ?dst .\n"
 		"?dst         ingen:connectedTo ?src ;\n"
 		"             ingen:symbol ?dstname .\n" 
@@ -376,7 +461,7 @@ Parser::parse(Ingen::Shared::World*           world,
 
 	query = Redland::Query(*world->rdf_world, Glib::ustring(
 		"SELECT DISTINCT ?varkey ?varval WHERE {\n") +
-		patch_uri + " ingen:variable ?variable .\n"
+		object_uri + " ingen:variable ?variable .\n"
 		"?variable    ingen:key      ?varkey ;\n"
 		"             ingen:value    ?varval .\n"
 		"}");
@@ -394,15 +479,16 @@ Parser::parse(Ingen::Shared::World*           world,
 
 
 	// Set passed variables last to override any loaded values
-	for (GraphObject::Variables::const_iterator i = data.begin(); i != data.end(); ++i)
-		target->set_variable(patch_path, i->first, i->second);
+	if (data)
+		for (GraphObject::Variables::const_iterator i = data.get().begin(); i != data.get().end(); ++i)
+			target->set_variable(patch_path, i->first, i->second);
 
 
 	/* Enable */
 
 	query = Redland::Query(*world->rdf_world, Glib::ustring(
 		"SELECT DISTINCT ?enabled WHERE {\n") +
-		patch_uri + " ingen:enabled ?enabled .\n"
+		object_uri + " ingen:enabled ?enabled .\n"
 		"}");
 
 	results = query.run(*world->rdf_world, model);
diff --git a/src/libs/serialisation/Parser.hpp b/src/libs/serialisation/Parser.hpp
index 18d59bf2..2aaf3bfb 100644
--- a/src/libs/serialisation/Parser.hpp
+++ b/src/libs/serialisation/Parser.hpp
@@ -27,7 +27,7 @@
 #include "interface/GraphObject.hpp"
 #include "module/World.hpp"
 
-namespace Redland { class World; }
+namespace Redland { class World; class Model; }
 namespace Ingen { namespace Shared { class CommonInterface; } }
 
 using namespace Ingen::Shared;
@@ -40,13 +40,51 @@ class Parser {
 public:
 	virtual ~Parser() {}
 	
-	virtual bool parse(Ingen::Shared::World*           world,
-	                   Ingen::Shared::CommonInterface* target,
-	                   const Glib::ustring&            uri,
-	                   boost::optional<Raul::Path>     parent,
-	                   std::string                     patch_name,
-	                   Glib::ustring                   patch_uri = "",
-	                   GraphObject::Variables          data = GraphObject::Variables());
+	virtual bool parse_document(
+			Ingen::Shared::World*                   world,
+			Shared::CommonInterface*                target,
+			const Glib::ustring&                    document_uri,
+			Glib::ustring                           object_uri,
+			boost::optional<Raul::Path>             parent=boost::optional<Raul::Path>(),
+			boost::optional<Raul::Symbol>           symbol=boost::optional<Raul::Symbol>(),
+			boost::optional<GraphObject::Variables> data=boost::optional<GraphObject::Variables>());
+	
+	virtual bool parse_string(
+			Ingen::Shared::World*                   world,
+			Shared::CommonInterface*                target,
+			const Glib::ustring&                    str,
+			const Glib::ustring&                    base_uri,
+			Glib::ustring                           object_uri,
+			boost::optional<Raul::Path>             parent=boost::optional<Raul::Path>(),
+			boost::optional<Raul::Symbol>           symbol=boost::optional<Raul::Symbol>(),
+			boost::optional<GraphObject::Variables> data=boost::optional<GraphObject::Variables>());
+
+private:
+	bool parse(
+			Ingen::Shared::World*                   world,
+			Shared::CommonInterface*                target,
+			Redland::Model&                         model,
+			const Glib::ustring&                    base_uri,
+			Glib::ustring                           object_uri,
+			boost::optional<Raul::Path>             parent=boost::optional<Raul::Path>(),
+			boost::optional<Raul::Symbol>           symbol=boost::optional<Raul::Symbol>(),
+			boost::optional<GraphObject::Variables> data=boost::optional<GraphObject::Variables>());
+
+	Raul::Path parse_path(
+			Ingen::Shared::World*          world,
+			Redland::Model&                model,
+			const Glib::ustring&           base_uri,
+			const Glib::ustring&           object_uri,
+			boost::optional<Raul::Path>&   parent,
+			boost::optional<Raul::Symbol>& symbol);
+
+	bool parse_patch(
+			Ingen::Shared::World*                   world,
+			Ingen::Shared::CommonInterface*         target,
+			Redland::Model&                         model,
+			const Glib::ustring&                    object_uri,
+			Raul::Path                              path,
+			boost::optional<GraphObject::Variables> data);
 };
 
 
diff --git a/src/libs/serialisation/Serialiser.cpp b/src/libs/serialisation/Serialiser.cpp
index d2f2031f..a56d6add 100644
--- a/src/libs/serialisation/Serialiser.cpp
+++ b/src/libs/serialisation/Serialiser.cpp
@@ -54,15 +54,17 @@ namespace Serialisation {
 
 
 Serialiser::Serialiser(Shared::World& world, SharedPtr<Shared::Store> store)
-	: _store(store)
+	: _root_path("/")
+	, _store(store)
 	, _world(*world.rdf_world)
 {
 }
 	
+
 void
 Serialiser::to_file(SharedPtr<GraphObject> object, const string& filename)
 {
-	_root_object = object;
+	_root_path = object->path();
 	start_to_filename(filename);
 	serialise(object);
 	finish();
@@ -75,8 +77,8 @@ Serialiser::to_string(SharedPtr<GraphObject>        object,
 	                  const string&                 base_uri,
 	                  const GraphObject::Variables& extra_rdf)
 {
-	_root_object = object;
-	start_to_string(base_uri);
+	_root_path = object->path();
+	start_to_string(object->path(), base_uri);
 	serialise(object);
 	
 	Redland::Node base_rdf_node(_model->world(), Redland::Node::RESOURCE, base_uri);
@@ -121,7 +123,7 @@ Serialiser::start_to_filename(const string& filename)
  * the desired objects have been serialised.
  */
 void
-Serialiser::start_to_string(const string& base_uri)
+Serialiser::start_to_string(const Raul::Path& root, const string& base_uri)
 {
 	setlocale(LC_NUMERIC, "C");
 
@@ -141,11 +143,13 @@ string
 Serialiser::finish()
 {
 	string ret = "";
-
-	if (_mode == TO_FILE)
+	if (_mode == TO_FILE) {
 		_model->serialise_to_file(_base_uri);
-	else
-		ret = _model->serialise_to_string();
+	} else {
+		char* c_str = _model->serialise_to_string();
+		ret = c_str;
+		free(c_str);
+	}
 
 	_base_uri = "";
 #ifdef USE_BLANK_NODES
@@ -159,12 +163,12 @@ Redland::Node
 Serialiser::patch_path_to_rdf_node(const Path& path)
 {
 #ifdef USE_BLANK_NODES
-	if (path == _root_object->path()) {
+	if (path == _root_path) {
 		return Redland::Node(_model->world(), Redland::Node::RESOURCE, _base_uri);
 	} else {
-		assert(path.length() > _root_object->path().length());
+		assert(path.length() > _root_path.length());
 		return Redland::Node(_model->world(), Redland::Node::RESOURCE,
-				_base_uri + string("#") + path.substr(_root_object->path().length()));
+				_base_uri + string("#") + path.substr(_root_path.length()));
 	}
 #else
 	return path_to_rdf_node(path);
@@ -192,13 +196,13 @@ Serialiser::path_to_rdf_node(const Path& path)
 	}
 #else
 	assert(_model);
-	assert(path.substr(0, _root_object->path().length()) == _root_object->path());
+	assert(path.substr(0, _root_path.length()) == _root_path);
 	
-	if (path == _root_object->path())
+	if (path == _root_path)
 		return Redland::Node(_model->world(), Redland::Node::RESOURCE, _base_uri);
 	else
 		return Redland::Node(_model->world(), Redland::Node::RESOURCE,
-				path.substr(_root_object->path().base().length()-1));
+				path.substr(_root_path.base().length()));
 #endif
 }
 
diff --git a/src/libs/serialisation/Serialiser.hpp b/src/libs/serialisation/Serialiser.hpp
index 5810f259..1c7271d2 100644
--- a/src/libs/serialisation/Serialiser.hpp
+++ b/src/libs/serialisation/Serialiser.hpp
@@ -64,7 +64,7 @@ public:
 	                      const std::string&            base_uri,
 	                      const GraphObject::Variables& extra_rdf);
 	
-	void start_to_string(const std::string& base_uri);
+	void start_to_string(const Raul::Path& root, const std::string& base_uri);
 	void serialise(SharedPtr<GraphObject> object) throw (std::logic_error);
 	void serialise_connection(SharedPtr<Shared::Connection> c) throw (std::logic_error);
 	
@@ -88,7 +88,7 @@ private:
 	Redland::Node path_to_rdf_node(const Path& path);
 	Redland::Node patch_path_to_rdf_node(const Path& path);
 
-	SharedPtr<GraphObject>   _root_object;
+	Raul::Path               _root_path;
 	SharedPtr<Shared::Store> _store;
 	Mode                     _mode;
 	std::string              _base_uri;