ESTransientHandle.h

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#ifndef FWCore_Framework_ESTransientHandle_h
#define FWCore_Framework_ESTransientHandle_h
// -*- C++ -*-
//
// Package:     Framework
// Class  :     ESTransientHandle
//
//
// Author:      Chris Jones
// Created:     Thu Nov 12 14:47:35 CST 2009
//

// system include files

// user include files
#include "FWCore/Framework/interface/ESHandle.h"

// forward declarations
namespace edm {

  class ESHandleExceptionFactory;

  template <typename T>
  class ESTransientHandle : public ESHandleBase {
  public:
    typedef T value_type;

    ESTransientHandle() : ESHandleBase() {}
    ESTransientHandle(T const* iData) : ESHandleBase(iData, 0) {}
    ESTransientHandle(T const* iData, edm::eventsetup::ComponentDescription const* desc) : ESHandleBase(iData, desc) {}
    ESTransientHandle(std::shared_ptr<ESHandleExceptionFactory>&&);

    // ---------- const member functions ---------------------
    T const* product() const { return static_cast<T const*>(productStorage()); }
    T const* operator->() const { return product(); }
    T const& operator*() const { return *product(); }
    // ---------- static member functions --------------------
    static constexpr bool transientAccessOnly = true;

    // ---------- member functions ---------------------------

  private:
  };

  template <class T>
  ESTransientHandle<T>::ESTransientHandle(std::shared_ptr<edm::ESHandleExceptionFactory>&& iWhyFailed)
      : ESHandleBase(std::move(iWhyFailed)) {}

}  // namespace edm
#endif