# HG changeset patch
# User Drew Perttula <drewp@bigasterisk.com>
# Date 2013-06-08 08:22:39
# Node ID 3b1a435a29b818bd774483ba00772952d8e81d15
# Parent  cad8207933d73df9cb40f17b6d1cd7a70c202070

start fixing curvecalc data model; not done yet
Ignore-this: 9960bef2556cd57da749e921bcf3248

diff --git a/bin/curvecalc b/bin/curvecalc
--- a/bin/curvecalc
+++ b/bin/curvecalc
@@ -35,6 +35,7 @@ from light9.curvecalc.subtermview import
 from light9.curvecalc.output import Output
 from light9.gtkpyconsole import togglePyConsole
 from light9.rdfdb.syncedgraph import SyncedGraph
+from light9.rdfdb.patch import Patch
 from light9.editchoicegtk import EditChoice
 from light9.observable import Observable
 
@@ -157,13 +158,26 @@ class Main(object):
             self.makeSubterm(newname, withCurve=wc)
         dialog.hide()
 
+    def currentSong(self):
+        with self.graph.currentState() as current:
+            return current.value(self.session, L9['currentSong'])
+
+    def songSubtermsContext(self):
+        return self.currentSong()
+
     def makeSubterm(self, newname, withCurve=False, expr=None):
         uri = L9['sub/%s' % newname]
-        if (uri, RDF.type, L9.Subterm) in self.graph:
-            raise SubtermExists("already have a subterm named %r" % newname)
-        self.graph.add((uri, RDF.type, L9.Subterm))
-        self.graph.add((uri, RDFS.label, Literal(newname)))
-        self.graph.add((self.song, L9['subterm'], uri))
+        with self.graph.currentState() as current:
+            if (uri, RDF.type, L9.Subterm) in current:
+                raise SubtermExists("already have a subterm named %r" % newname)
+
+        ctx = self.songSubtermsContext()
+        self.graph.patch(Patch(addQuads=[
+            (uri, RDF.type, L9.Subterm, ctx),
+            (uri, RDFS.label, Literal(newname), ctx),
+            (self.currentSong(), L9['subterm'], uri, ctx),
+            ]))
+            
         if withCurve:
             self.curveset.new_curve(newname)
 
diff --git a/doc/subterms b/doc/subterms
new file mode 100644
--- /dev/null
+++ b/doc/subterms
@@ -0,0 +1,8 @@
+
+
+song
+  -- :subterm -->
+    st
+       -- rdfs:label --> "chase 1"
+       -- :sub --> sub
+       -- :expression --> "curve1(t)"
\ No newline at end of file
diff --git a/light9/curvecalc/subtermview.py b/light9/curvecalc/subtermview.py
--- a/light9/curvecalc/subtermview.py
+++ b/light9/curvecalc/subtermview.py
@@ -1,6 +1,6 @@
 import gtk, logging
 from louie import dispatcher
-from rdflib import RDF, RDFS, Literal
+from rdflib import URIRef
 from light9 import Submaster
 from light9.namespaces import L9
 from light9.curvecalc.subterm import Subterm, Subexpr
@@ -58,6 +58,7 @@ class Subtermview(object):
         self.exprView = sev.box
 
 def add_one_subterm(graph, subUri, curveset, subterms, master, expr=None, show=False):
+    assert isinstance(subUri, URIRef), subUri
     subname = graph.label(subUri)
     log.info("%s's label is %s" % (subUri, subname))
     if not subname: # fake sub, like for a chase