First step of refactoring code (ccnx prefix => ndn prefix)
diff --git a/model/pit/ndn-pit-entry-incoming-face.cc b/model/pit/ndn-pit-entry-incoming-face.cc
new file mode 100644
index 0000000..28408ed
--- /dev/null
+++ b/model/pit/ndn-pit-entry-incoming-face.cc
@@ -0,0 +1,51 @@
+/* -*- Mode: C++; c-file-style: "gnu"; indent-tabs-mode:nil -*- */
+/*
+ * Copyright (c) 2011 University of California, Los Angeles
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation;
+ *
+ * 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ *
+ * Author: Alexander Afanasyev <alexander.afanasyev@ucla.edu>
+ */
+
+#include "ndn-pit-entry-incoming-face.h"
+
+#include "ns3/simulator.h"
+
+namespace ns3 {
+
+NdnPitEntryIncomingFace::NdnPitEntryIncomingFace (Ptr<NdnFace> face)
+  : m_face (face)
+  , m_arrivalTime (Simulator::Now ())
+  // , m_nonce (nonce)
+{
+}
+
+NdnPitEntryIncomingFace::NdnPitEntryIncomingFace ()
+  : m_face (0)
+  , m_arrivalTime (0)
+{
+}
+
+/**
+ * @brie Copy operator
+ */
+NdnPitEntryIncomingFace &
+NdnPitEntryIncomingFace::operator = (NdnPitEntryIncomingFace &other)
+{
+  m_face = other.m_face;
+  m_arrivalTime = other.m_arrivalTime;
+  return *this;
+}
+
+} // namespace ns3