diff -r 71684a2ea502 -r 48440ff95906 src/p4l/mapping/constants.py
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/p4l/mapping/constants.py	Fri Sep 20 10:34:49 2013 +0200
@@ -0,0 +1,25 @@
+# -*- coding: utf-8 -*-
+'''
+Created on Aug 30, 2013
+
+@author: ymh
+'''
+from rdflib.graph import Graph
+from rdflib.namespace import Namespace, RDF
+
+
+DCT = Namespace("http://purl.org/dc/terms/")
+IIEP = Namespace("http://www.iiep.unesco.org/plan4learning/model.owl#")
+UNESCO = Namespace("http://www.iiep.unesco.org/Ontology/")
+
+GRAPH_NAMESPACES = {
+    'iiep': IIEP,
+    'dct': DCT,
+    'rdf': RDF
+}
+
+def get_empty_graph():
+    record_graph = Graph()
+    for prefix,uri in GRAPH_NAMESPACES.items():
+        record_graph.bind(prefix,uri)
+    return record_graph