ObjPtr.h

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/*
 * ObjPtr.h
 *
 *  Created on: 16 Aug 2017
 *      Author: Nicola Mori
 */

#ifndef OBJPTR_H_
#define OBJPTR_H_

#include "core/ObserverPtr.h"
#include "core/RetrievalResult.h"

namespace EA {

template <typename T> class ObjPtr : public observer_ptr<T> {
public:
  ObjPtr() : observer_ptr<T>(nullptr), _result(RetrievalResult::NOTFOUND) {}

  ObjPtr(const ObjPtr<T> &objPtr) : observer_ptr<T>(objPtr), _result(objPtr._result) {}

  ObjPtr(const ObjPtr<T> &&objPtr) : observer_ptr<T>(std::move(objPtr)), _result(std::move(objPtr._result)) {}

  ObjPtr(std::nullptr_t) : observer_ptr<T>(nullptr), _result(RetrievalResult::NOTFOUND) {}

  ObjPtr &operator=(const ObjPtr &rhs) {
    observer_ptr<T>::operator=(rhs);
    _result = rhs._result;
    return *this;
  }

  ObjPtr &operator=(std::nullptr_t) {
    observer_ptr<T>::operator=(nullptr);
    _result = RetrievalResult::NOTFOUND;
    return *this;
  }

  ObjPtr &operator=(const ObjPtr &&rhs) {
    observer_ptr<T>::operator=(std::move(rhs));
    _result = std::move(rhs._result);
    return *this;
  }

  RetrievalResult GetRetrievalResult() { return _result; }

private:
  friend class ObjectMap;
  friend class DataStore;
  friend class EventDataStore;

  using observer_ptr<T>::operator=; 

  ObjPtr(const observer_ptr<T> &&obsPtr) : observer_ptr<T>(std::move(obsPtr)), _result(RetrievalResult::NOTFOUND) {}

  RetrievalResult _result;
};

} // namespace EA

#endif /* OBJPTR_H_ */