--- a
+++ b/src/policies/DIF/RA/QueueIDGen/QueueIDGenBase.h
@@ -0,0 +1,68 @@
+//
+// Copyright Š 2014 PRISTINE Consortium (http://ict-pristine.eu)
+// 
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Lesser General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+// 
+// This program 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 Lesser General Public License for more details.
+// 
+// You should have received a copy of the GNU Lesser General Public License
+// along with this program.  If not, see http://www.gnu.org/licenses/.
+// 
+
+#ifndef QUEUEIDGENBASE_H_
+#define QUEUEIDGENBASE_H_
+
+#include <omnetpp.h>
+
+#include "Flow.h"
+#include "PDU.h"
+
+/**
+ * Noop base class for the RA queue ID generator.
+ * This convenience class provides generation of queue IDs from given objects.
+ */
+class QueueIDGenBase : public cSimpleModule
+{
+  public:
+
+    /**
+     * A hook method invoked after the initial setup of policy module.
+     */
+    virtual void onPolicyInit();
+
+    /**
+     * Generates queue ID for given PDU (this is usually invoked by RMT).
+     *
+     * @param pdu PDU
+     */
+    virtual std::string generateID(PDU* pdu);
+
+    /**
+     * Generates queue ID for given flow object (this is usually invoked by QueueAlloc policy).
+     *
+     * @param flow flow object
+     */
+    virtual std::string generateID(Flow* flow);
+
+  protected:
+    /**
+     * Handler for OMNeT++ module messages (probably not of much use here).
+     */
+    void handleMessage(cMessage *msg);
+
+  private:
+    /**
+     *  Module initialization routine setting up parameters for GUI.
+     *  Inherited policies should be using onPolicyInit() instead.
+     */
+    void initialize();
+
+};
+
+#endif /* QUEUEIDGENBASE_H_ */