/* Copyright (C) 2014 InfiniDB, Inc.

   This program 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; version 2 of
   the License.

   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., 51 Franklin Street, Fifth Floor, Boston,
   MA 02110-1301, USA. */

// $Id$

/** @file */

#pragma once

#include <cstdint>

#include <boost/thread/mutex.hpp>
#include <boost/thread/condition.hpp>

class AutoincrementData
{
 public:
  typedef std::map<uint32_t, AutoincrementData*> AutoincDataMap;
  typedef std::map<uint32_t, long long> OIDNextValue;
  static AutoincrementData* makeAutoincrementData(uint32_t sessionID = 0);
  static void removeAutoincrementData(uint32_t sessionID = 0);
  void setNextValue(uint32_t columnOid, long long nextValue);
  long long getNextValue(uint32_t columnOid);
  OIDNextValue& getOidNextValueMap();

 private:
  /** Constuctors */
  explicit AutoincrementData();
  explicit AutoincrementData(const AutoincrementData& rhs);
  ~AutoincrementData();

  static boost::mutex map_mutex;
  static AutoincDataMap fAutoincDataMap;
  OIDNextValue fOidNextValueMap;
  boost::mutex fOIDnextvalLock;
};