diff -r ac3dc090e987 -r f2a40bbc27f6 server/src/app/Libraries/Mappers/RdfMapper.php
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/server/src/app/Libraries/Mappers/RdfMapper.php	Tue Nov 17 13:11:55 2015 +0100
@@ -0,0 +1,20 @@
+<?php
+namespace CorpusParole\Libraries\Mappers;
+
+/**
+ * Map a rdf graph to one more graph(es).
+ */
+interface RdfMapper {
+
+    /**
+     * Map an Rdf Graph from one model to another
+     * @return the new mapped graph
+     */
+    function mapGraph();
+
+    /**
+     * Get output graphes
+     * @return array
+     */
+    function getOutputGraphes();
+}