parameters_factory.h

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#ifndef PARAMETERS_FACTORY_INCLUDED
#define PARAMETERS_FACTORY_INCLUDED

#include <map>
#include <list>
#include <vector>
#include <string>
#include "defs.h"
#include "parameters.h"

#include "bridgeIO.h"
using Bridge::vout;


class Parameters;

class ParametersFactory {
 private:
  typedef void (*creator_callback)(Parameters&);
  typedef std::list<creator_callback>                    creator_callback_list;
  typedef std::map<std::string, creator_callback_list>   database_type;

 public:
  Parameters *create_parameters(const std::string& realm);

  bool register_callback(const std::string& realm, const creator_callback& cb);

  static ParametersFactory& Instance();

  static Parameters *New(const std::string& realm)
  {
    return Instance().create_parameters(realm);
  }

  static bool Register(const std::string& realm, const creator_callback& cb)
  {
    return Instance().register_callback(realm, cb);
  }

 private:
  // singleton
  ParametersFactory() {}
  ParametersFactory(const ParametersFactory&);            // left unimplemented.
  ParametersFactory& operator=(const ParametersFactory&); // left unimplemented.

  ~ParametersFactory() {}

  static void CreateInstance();

  static ParametersFactory *s_instance;

  std::vector<std::string> string_tokenize(const std::string& src, const char delim = '.');
  std::string string_concat(const std::vector<std::string>& src, const char delim = '.');

  database_type m_map;
};
#endif