config_reference_copy.hpp

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// DUNE DAQ modification notice:
// This file has been modified from the original ATLAS dbe source for the DUNE DAQ project.
// Fork baseline commit: dbe-02-12-17 (2022-05-12).
// Renamed since fork: yes (from dbe/config_reference_copy.hpp to include/dbe/config_reference_copy.hpp).
 
/************************************************************
 * config_reference_copy.hpp
 *
 *  Created on: Feb 4, 2016
 *      Author: Leonidas Georgopoulos
 ************************************************************/
 
#ifndef DBE_CONFIG_REFERENCE_COPY_HPP_
#define DBE_CONFIG_REFERENCE_COPY_HPP_
 
#include "dbe/config_reference.hpp"
#include "dbe/confobject_extra.hpp"
 
#include <functional>
 
namespace dbe {
 
namespace inner {
 
namespace configobject {
 
//------------------------------------------------------------------------------------------
template<typename T = config_object_linker>
class aref : ref_interface<aref<T>>
{
private:
  // A reference to the current reference in the database, which may have been removed
  tref this_object_ref;
 
  // The copy of the object
  T this_object_image;
 
  const tref& ref() const { return this_object_ref; }
 
public:
  aref(tref const& o)
    : this_object_ref(o)
    , this_object_image(o)
  {
  }
 
  friend class ref_interface<aref>;
  friend class inner::dbcontroller;
};
//------------------------------------------------------------------------------------------
 
//------------------------------------------------------------------------------------------
template<typename T = config_object_linker>
class gref
{
public:
  typedef T t_extractor;
  typedef std::function<void(dref const)> config_action_notifiable;

  bool is_null() const;

  void notify(config_action_notifiable tele);
 
private:
  typedef std::deque<t_extractor> type_extractor_stack;
  typedef std::vector<dbe::tref> type_ref_container;

  tref rebuild();

  void record(tref const& obj);

  void post();
 
  type_extractor_stack this_remove_stack;
  type_ref_container this_notify_stack;
 
  friend class inner::dbcontroller;
};
//------------------------------------------------------------------------------------------
 
} // namespace configobject
 
} // namespace inner
 
} // namespace dbe
 
#endif /* DBE_CONFIG_REFERENCE_COPY_HPP_ */