TPCnvElt.h

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// This file's extension implies that it's C, but it's really -*- C++ -*-.
 
/*
  Copyright (C) 2002-2019 CERN for the benefit of the ATLAS collaboration
*/
 
// $Id$
#ifndef ATHENAPOOLCNVSVC_TPCNVELT_H
#define ATHENAPOOLCNVSVC_TPCNVELT_H
 
 
#include "AthenaPoolCnvSvc/T_AthenaPoolCreateFuncs.h"
#include "PersistentDataModel/Guid.h"
#include <typeinfo>
#include <memory>
class MsgStream;
 
 
template <class TRANS> class T_TPCnvNull
{
};
 
 
namespace AthenaPoolCnvSvc {
 
 
Guid guidFromTypeinfo (const std::type_info& ti);
 
 
template <class CNV, class TPCNV>
class TPCnvElt
{
public:
  typedef typename TPCNV::Trans_t Trans_t;
  typedef typename TPCNV::Pers_t  Pers_t;
 
  
  TPCnvElt();
 
 
  std::unique_ptr<Trans_t>
  createTransient (CNV& parent, const std::string& key, MsgStream& msg);
 
 
  bool persToTrans (CNV& parent, Trans_t* trans, const std::string& key, MsgStream& msg);
 
  
private:
  Guid m_guid;
 
  TPCNV m_cnv;
};
 
 
template <class CNV, class TRANS>
class TPCnvElt<CNV, T_TPCnvNull<TRANS> >
{
public:
  typedef TRANS Trans_t;
  typedef TRANS  Pers_t;
 
  
  TPCnvElt();
 
 
  std::unique_ptr<Trans_t>
  createTransient (CNV& parent, const std::string& key, MsgStream& msg);
 
 
  bool persToTrans (CNV& parent, Trans_t* trans, const std::string& key, MsgStream& msg);
 
  
private:
  Guid m_guid;
};
 
 
} // namespace AthenaPoolCnvSvc
 
 
#include "AthenaPoolCnvSvc/TPCnvElt.icc"
 
 
#endif // not ATHENAPOOLCNVSVC_TPCNVELT_H