5 files changed, 84 insertions, 6 deletions

diff --git a/src/engine/Edge.cpp b/src/engine/Edge.cpp
new file mode 100644
index 0000000..16bc202
--- /dev/null
+++ b/src/engine/Edge.cpp
@@ -0,0 +1,63 @@
+/* This file is part of Machina.
+ * Copyright (C) 2007 Dave Robillard <http://drobilla.net>
+ * 
+ * Machina 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.
+ * 
+ * Machina 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 Street, Fifth Floor, Boston, MA  02110-1301, USA
+ */
+
+#include <raul/RDFWriter.h>
+#include "machina/Node.hpp"
+#include "machina/Edge.hpp"
+
+namespace Machina {
+
+
+void
+Edge::write_state(Raul::RDFWriter& writer)
+{
+	using Raul::RdfId;
+
+	if (!_id)
+		set_id(writer.blank_id());
+
+	writer.write(_id,
+			RdfId(RdfId::RESOURCE, "rdf:type"),
+			RdfId(RdfId::RESOURCE, "machina:Edge"));
+
+	SharedPtr<Node> src = _src.lock();
+	SharedPtr<Node> dst = _dst;
+
+	if (!src || !dst)
+		return;
+
+	if (!src->id())
+		src->set_id(writer.blank_id());
+
+	if (!dst->id())
+		dst->set_id(writer.blank_id());
+
+	writer.write(_id,
+			RdfId(RdfId::RESOURCE, "machina:tail"),
+			src->id());
+
+	writer.write(_id,
+			RdfId(RdfId::RESOURCE, "machina:head"),
+			dst->id());
+	
+	writer.write(_id,
+			RdfId(RdfId::RESOURCE, "machina:probability"),
+			_probability.get());
+}
+
+
+} // namespace Machina
diff --git a/src/engine/Machine.cpp b/src/engine/Machine.cpp
index a2d650d..2d3358b 100644
--- a/src/engine/Machine.cpp
+++ b/src/engine/Machine.cpp
@@ -218,14 +218,23 @@ Machine::write_state(Raul::RDFWriter& writer)
 			RdfId(RdfId::RESOURCE, "machina:Machine"));
 
 	for (Nodes::const_iterator n = _nodes.begin(); n != _nodes.end(); ++n) {
-		if ( ! (*n)->id() )
-			(*n)->set_id(writer.blank_id());
-
+		
 		(*n)->write_state(writer);
 
 		writer.write(RdfId(RdfId::RESOURCE, ""),
 				RdfId(RdfId::RESOURCE, "machina:node"),
 				(*n)->id());
+	
+		for (Node::EdgeList::const_iterator e = (*n)->outgoing_edges().begin();
+			e != (*n)->outgoing_edges().end(); ++e) {
+			
+			(*e)->write_state(writer);
+		
+			writer.write(RdfId(RdfId::RESOURCE, ""),
+				RdfId(RdfId::RESOURCE, "machina:edge"),
+				(*e)->id());
+		}
+
 	}
 }
 
diff --git a/src/engine/Makefile.am b/src/engine/Makefile.am
index da594e8..d325788 100644
--- a/src/engine/Makefile.am
+++ b/src/engine/Makefile.am
@@ -8,6 +8,7 @@ libmachina_la_LIBADD   = @RAUL_LIBS@   @JACK_LIBS@   @GLIBMM_LIBS@
 
 libmachina_la_SOURCES = \
 	Node.cpp \
+	Edge.cpp \
 	Machine.cpp \
 	Loader.h \
 	Loader.cpp \
diff --git a/src/engine/Node.cpp b/src/engine/Node.cpp
index 8bf9246..e44e448 100644
--- a/src/engine/Node.cpp
+++ b/src/engine/Node.cpp
@@ -120,6 +120,9 @@ Node::write_state(Raul::RDFWriter& writer)
 {
 	using Raul::RdfId;
 	
+	if (!_id)
+		set_id(writer.blank_id());
+
 	writer.write(_id,
 			RdfId(RdfId::RESOURCE, "rdf:type"),
 			RdfId(RdfId::RESOURCE, "machina:Node"));
@@ -130,8 +133,7 @@ Node::write_state(Raul::RDFWriter& writer)
 	
 	for (Node::EdgeList::const_iterator e = _outgoing_edges.begin();
 			e != _outgoing_edges.end(); ++e)
-		std::cerr << "FIXME: write edge\n";
-
+		(*e)->write_state(writer);
 }
 
 
diff --git a/src/engine/machina/Edge.hpp b/src/engine/machina/Edge.hpp
index 8860abe..7f14788 100644
--- a/src/engine/machina/Edge.hpp
+++ b/src/engine/machina/Edge.hpp
@@ -23,6 +23,7 @@
 #include <raul/WeakPtr.h>
 #include <raul/SharedPtr.h>
 #include <raul/DoubleBuffer.h>
+#include <raul/Stateful.h>
 #include "types.hpp"
 #include "Action.hpp"
 
@@ -30,7 +31,7 @@ namespace Machina {
 
 class Node;
 
-class Edge : boost::noncopyable {
+class Edge : public Raul::Stateful, public boost::noncopyable {
 public:
 
 	Edge(WeakPtr<Node> src, SharedPtr<Node> dst)
@@ -39,6 +40,8 @@ public:
 		, _dst(dst)
 	{}
 
+	void write_state(Raul::RDFWriter& writer);
+
 	WeakPtr<Node>   src() { return _src; }
 	SharedPtr<Node> dst() { return _dst; }