diff -r ef32bf573d9c -r bd4bc1db4f40 server/src/app/Libraries/RdfModel/RdfModelDelta.php
--- a/server/src/app/Libraries/RdfModel/RdfModelDelta.php	Thu Sep 08 19:15:46 2016 +0200
+++ b/server/src/app/Libraries/RdfModel/RdfModelDelta.php	Thu Sep 22 12:38:24 2016 +0200
@@ -9,12 +9,15 @@
 class RdfModelDelta {
 
     public function __construct($uri) {
+        $this->uri = $uri;
         $this->deletedGraph = new Graph($uri);
         $this->addedGraph = new Graph($uri);
+        $this->deleteWhere = [];
     }
 
     private $deletedGraph;
     private $addedGraph;
+    private $deleteWhere;
 
     public function getDeletedGraph() {
         return $this->deletedGraph;
@@ -24,4 +27,17 @@
         return $this->addedGraph;
     }
 
+    public function getDeleteWhere() {
+        return $this->deleteWhere;
+    }
+
+    public function addDeleteWhere(string $value) {
+        array_push($this->deleteWhere, $value);
+        return $this;
+    }
+
+    public function getUri() {
+        return $this->uri;
+    }
+
 }