StorableConversions.cxx

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/*
  Copyright (C) 2002-2024 CERN for the benefit of the ATLAS collaboration
*/
 
#include "AthenaKernel/StorableConversions.h"
#include "AthenaKernel/CLIDRegistry.h"
#include "GaudiKernel/System.h"
 
#include "AthenaKernel/getMessageSvc.h"
#include "GaudiKernel/MsgStream.h"
 
 
namespace SG {
 
 
void* fromStorable(DataObject* pDObj, CLID clid,
                   const std::type_info* tinfo /*= nullptr*/,
                   bool quiet [[maybe_unused]] /*= false*/,
                   IRegisterTransient*irt/*= 0*/,
                   bool isConst /*= true*/)
{
  //check inputs
  if (0 == pDObj) {
    MsgStream gLog(Athena::getMessageSvc(), "SG::fromStorable");
    gLog << MSG::WARNING << "null input pointer " << endmsg;
    return nullptr;
  }
 
  // get T* from DataBucket:
  // All objects in the event store nowadays are instances
  // of DataBucket, so just do a static_cast.
  DataBucketBase* b = static_cast<DataBucketBase*>(pDObj);
  // Use BaseInfo information to convert pointers.
 
  void* ret = nullptr;
  if (tinfo)
    ret = b->cast (clid, *tinfo, irt, isConst);
  else
    ret = b->cast (clid, irt, isConst);
  if (!quiet && !ret) {
    const std::type_info* tid = CLIDRegistry::CLIDToTypeinfo (clid);
    MsgStream gLog(Athena::getMessageSvc(), "SG::fromStorable");
    gLog << MSG::WARNING 
         << "can't convert stored DataObject " << pDObj 
         << " to type ("
         << (tid ? System::typeinfoName (*tid) : "[unknown]")
         << ")\n Unless you are following a symlink,"
         << " it probably means you have a duplicate "
         << "CLID = "  << pDObj->clID() 
         << endmsg;
  }
  return ret;
}
 
 
void* Storable_cast(DataObject* pDObj, CLID clid,
                    const std::type_info* tinfo /*= nullptr*/,
                    bool quiet /*= false*/,
                    IRegisterTransient* irt /*= 0*/,
                    bool isConst /*= true*/)
{
  return fromStorable (pDObj, clid, tinfo, quiet, irt, isConst);
}
 
 
} // namespace SG