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diff --git a/cpp/src/qpid/legacystore/jrnl/lp_map.h b/cpp/src/qpid/legacystore/jrnl/lp_map.h
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+/*
+ *
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ *
+ */
+
+/**
+ * \file lp_map.h
+ *
+ * Qpid asynchronous store plugin library
+ *
+ * File containing code for class mrg::journal::lp_map (logical file map).
+ * See class documentation for details.
+ *
+ * \author Kim van der Riet
+ */
+
+#ifndef QPID_LEGACYSTORE_JRNL_LP_MAP_H
+#define QPID_LEGACYSTORE_JRNL_LP_MAP_H
+
+#include <map>
+#include <string>
+#include <sys/types.h>
+#include <vector>
+
+namespace mrg
+{
+namespace journal
+{
+    /**
+    * \class lp_map
+    * \brief Maps the logical file id (lfid) to the physical file id (pfid) in the journal.
+    *
+    * NOTE: NOT THREAD SAFE
+    */
+    class lp_map
+    {
+    public:
+        typedef std::map<u_int16_t, u_int16_t> lp_map_t;
+        typedef lp_map_t::const_iterator lp_map_citr_t;
+        typedef lp_map_t::const_reverse_iterator lp_map_critr_t;
+
+    private:
+        typedef std::pair<u_int16_t, u_int16_t> lfpair;
+        typedef std::pair<lp_map_t::iterator, bool> lfret;
+        lp_map_t _map;
+
+    public:
+        lp_map();
+        virtual ~lp_map();
+
+        void insert(u_int16_t lfid, u_int16_t pfid);
+        inline u_int16_t size() const { return u_int16_t(_map.size()); }
+        inline bool empty() const { return _map.empty(); }
+        inline lp_map_citr_t begin() { return _map.begin(); }
+        inline lp_map_citr_t end() { return _map.end(); }
+        inline lp_map_critr_t rbegin() { return _map.rbegin(); }
+        inline lp_map_critr_t rend() { return _map.rend(); }
+        void get_pfid_list(std::vector<u_int16_t>& pfid_list);
+
+        // debug aid
+        std::string to_string();
+    };
+
+} // namespace journal
+} // namespace mrg
+
+#endif // ifndef QPID_LEGACYSTORE_JRNL_LP_MAP_H