CoordDataFile.h

Go to the documentation of this file.

#ifndef OSMSCOUT_COORDDATAFILE_H
#define OSMSCOUT_COORDDATAFILE_H

/*
  This source is part of the libosmscout library
  Copyright (C) 2012  Tim Teulings

  This library 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 2.1 of the License, or (at your option) any later version.

  This library 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 library; if not, write to the Free Software
  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307  USA
*/

#include <osmscout/DataFile.h>
#include <osmscout/Point.h>

#include <osmscout/util/Cache.h>

namespace osmscout {

  class OSMSCOUT_API CoordDataFile
  {
  public:
    static const char* const COORD_DAT;

  private:
    using PageIdFileOffsetMap = std::unordered_map<PageId, FileOffset>;

  public:
    using ResultMap = std::unordered_map<OSMId, Point>;

  private:
    bool                isOpen;             
    std::string         datafilename;       
    mutable FileScanner scanner;            
    uint32_t            pageSize;
    PageIdFileOffsetMap pageFileOffsetMap;

  public:
    CoordDataFile();
    virtual ~CoordDataFile();

    bool Open(const std::string& path,
              bool memoryMapedData);
    bool Close();

    inline std::string GetFilename() const
    {
      return datafilename;
    }

    bool Get(const std::set<OSMId>& ids, ResultMap& resultMap) const;
  };
}

#endif