object_factory.h

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#ifndef CARTOBASE_OBJECT_OBJECT_FACTORY_H
#define CARTOBASE_OBJECT_OBJECT_FACTORY_H
 
#include <cartobase/object/object.h>
 
namespace carto {
 
class ObjectFactory : public RCObject
{
public:
 
  typedef Object (*ObjectFactoryFunction)();
 
  static void registerFactory( const std::string &type, ObjectFactoryFunction );
  template <typename T>
  inline static void registerDefaultFactory( const std::string &type );
  static Object createObject( const std::string &type );
 
 
private:
 
  typedef std::map< std::string, ObjectFactoryFunction > FactoriesType;
 
  template <typename T>
  static Object _defaultFactoryFunction();
 
  ObjectFactory();
 
  void _registerFactory( const std::string &type, ObjectFactoryFunction );
  template <typename T>
  inline void _registerDefaultFactory( const std::string &type );
  Object _createObject( const std::string &type ) const;
 
  static ObjectFactory &_singleton();
 
  FactoriesType _factories;
};
 
 
template <typename T>
inline void ObjectFactory::registerDefaultFactory( const std::string &type )
{
  _singleton()._registerDefaultFactory<T>( type );
}
 
 
template <typename T>
Object ObjectFactory::_defaultFactoryFunction()
{
  return Object::value( T() );
}
 
// template <>
// Object ObjectFactory::_defaultFactoryFunction<int>()
// {
//   return Object::value( int() );
// }
 
template <typename T>
inline void ObjectFactory::_registerDefaultFactory( const std::string &type )
{
  _registerFactory( type, &ObjectFactory::_defaultFactoryFunction<T> );
}
 
 
} // namespace carto
 
#endif // ifndef CARTOBASE_OBJECT_OBJECT_FACTORY_H