diff --git a/src/handles/base-handle.hpp b/src/handles/base-handle.hpp
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+/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
+/**
+ * Copyright (c) 2014,  Regents of the University of California.
+ *
+ * This file is part of NDN repo-ng (Next generation of NDN repository).
+ * See AUTHORS.md for complete list of repo-ng authors and contributors.
+ *
+ * repo-ng is free software: you can redistribute it and/or modify it under the terms
+ * of the GNU General Public License as published by the Free Software Foundation,
+ * either version 3 of the License, or (at your option) any later version.
+ *
+ * repo-ng 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
+ * repo-ng, e.g., in COPYING.md file.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef REPO_HANDLES_BASE_HANDLE_HPP
+#define REPO_HANDLES_BASE_HANDLE_HPP
+
+#include "common.hpp"
+
+#include "storage/storage-handle.hpp"
+#include "repo-command-response.hpp"
+#include "repo-command-parameter.hpp"
+
+namespace repo {
+
+class BaseHandle : noncopyable
+{
+
+public:
+  class Error : std::runtime_error
+  {
+  public:
+    explicit
+    Error(const std::string& what)
+      : std::runtime_error(what)
+    {
+    }
+  };
+
+public:
+  BaseHandle(Face& face, StorageHandle& storageHandle, KeyChain& keyChain, Scheduler& scheduler)
+    : m_face(face)
+    , m_storageHandle(storageHandle)
+    , m_keyChain(keyChain)
+    , m_scheduler(scheduler)
+  {
+  }
+
+  virtual void
+  listen(const Name& prefix) = 0;
+
+protected:
+
+  inline Face&
+  getFace()
+  {
+    return m_face;
+  }
+
+  inline StorageHandle&
+  getStorageHandle()
+  {
+    return m_storageHandle;
+  }
+
+  inline Scheduler&
+  getScheduler()
+  {
+    return m_scheduler;
+  }
+
+  uint64_t
+  generateProcessId();
+
+  void
+  reply(const Interest& commandInterest, const RepoCommandResponse& response);
+
+
+  /**
+   * @brief extract RepoCommandParameter from a command Interest.
+   * @param interest command Interest
+   * @param prefix Name prefix up to command-verb
+   * @param[out] parameter parsed parameter
+   * @throw RepoCommandParameter::Error parse error
+   */
+  void
+  extractParameter(const Interest& interest, const Name& prefix, RepoCommandParameter& parameter);
+
+private:
+
+  Face& m_face;
+  StorageHandle& m_storageHandle;
+  KeyChain& m_keyChain;
+  Scheduler& m_scheduler;
+};
+
+inline void
+BaseHandle::reply(const Interest& commandInterest, const RepoCommandResponse& response)
+{
+  Data rdata(commandInterest.getName());
+  rdata.setContent(response.wireEncode());
+  m_keyChain.sign(rdata);
+  m_face.put(rdata);
+}
+
+inline void
+BaseHandle::extractParameter(const Interest& interest, const Name& prefix,
+                             RepoCommandParameter& parameter)
+{
+  parameter.wireDecode(interest.getName().get(prefix.size()).blockFromValue());
+}
+
+} // namespace repo
+
+#endif // REPO_HANDLES_BASE_HANDLE_HPP