RasterFactory.hh

Go to the documentation of this file.

#ifndef _RASTER_FACTORYHH_
#define _RASTER_FACTORYHH_

#include <openmodeller/env_io/Raster.hh>
#include <openmodeller/env_io/GdalRaster.hh>
#include <openmodeller/env_io/WcsProxyRaster.hh>
#include <openmodeller/env_io/RemoteRaster.hh>

#ifdef TERRALIB_FOUND
#include <openmodeller/env_io/TerralibRaster.hh>
#endif

#include <string>
using std::string;

#include <map>
using std::map;

class MapFormat;


class dllexp RasterFactory
{

private:

  // Function pointer to builder function.
  typedef Raster* (*CreateRasterCallback)();

  // Map of Rasters and identifiers.
  typedef std::map<string, CreateRasterCallback> DriversMap;

public:

  static RasterFactory& instance();
  
  bool registerDriver( const string& driverId, CreateRasterCallback builder );
  
  bool unregisterDriver( const string& driverId );

  Raster* create( const string& source, int categ = 0 );
  
  #ifdef MPI_FOUND
    Raster* create( const string& output_file_source, const string& source, const MapFormat& format );
  #else 
    Raster* create( const string& source, const MapFormat& format );
  #endif

private:

  // Indicates if the factory was initiated (i.e., drivers were registered).
  static bool _initiated;

  DriversMap _drivers;
  
  // No constructor allowed (singleton pattern).
  RasterFactory(){};

  RasterFactory( const RasterFactory& );

  RasterFactory& operator=( const RasterFactory& );

  ~RasterFactory(){};
};

#endif