CaloClusterStoreHelper.cxx

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/*
  Copyright (C) 2002-2026 CERN for the benefit of the ATLAS collaboration
*/
 
#include "CaloUtils/CaloClusterStoreHelper.h"
#include "CaloEvent/CaloClusterCellLink.h"
#include "xAODCaloEvent/CaloClusterAuxContainer.h"
#include "StoreGate/StoreGateSvc.h"
#include "AthenaKernel/errorcheck.h"
 
 
std::unique_ptr<xAOD::CaloCluster> CaloClusterStoreHelper::makeCluster(const CaloCellContainer* cellCont) {
  return makeCluster (DataLink<CaloCellContainer> (cellCont));
}
 
 
std::unique_ptr<xAOD::CaloCluster> CaloClusterStoreHelper::makeCluster(const DataLink<CaloCellContainer>& cellCont) {
  std::unique_ptr<xAOD::CaloCluster> cluster = std::make_unique<xAOD::CaloCluster>();
  cluster->makePrivateStore();
  if (cellCont) cluster->addCellLink(std::make_unique<CaloClusterCellLink>(cellCont));
  return cluster;
}
 
 
std::unique_ptr<xAOD::CaloCluster> CaloClusterStoreHelper::makeCluster(const CaloCellContainer* cellCont,
                                       const double eta0, const double phi0,
                                       const xAOD::CaloCluster_v1::ClusterSize clusterSize) {
  std::unique_ptr<xAOD::CaloCluster> cluster=CaloClusterStoreHelper::makeCluster(cellCont);
  cluster->setEta0(eta0);
  cluster->setPhi0(phi0);
  cluster->setClusterSize(clusterSize);
  return cluster;
}
 
 
xAOD::CaloCluster* CaloClusterStoreHelper::makeCluster(xAOD::CaloClusterContainer* cont, 
                               const CaloCellContainer* cellCont)
{
  return makeCluster (cont, DataLink<CaloCellContainer> (cellCont));
}
 
 
xAOD::CaloCluster* CaloClusterStoreHelper::makeCluster(xAOD::CaloClusterContainer* cont, 
                               const DataLink<CaloCellContainer>& cellCont) {
 
  xAOD::CaloCluster* cluster=cont->push_back(std::make_unique<xAOD::CaloCluster>());
  if (cellCont) cluster->addCellLink(std::make_unique<CaloClusterCellLink>(cellCont));
  return cluster;
}
 
 
StatusCode CaloClusterStoreHelper::AddContainerWriteHandle(SG::WriteHandle<xAOD::CaloClusterContainer> &clusColl) {
                                                           
  // Create the xAOD container and its auxiliary store:
  StatusCode sc = 
    clusColl.record (std::make_unique<xAOD::CaloClusterContainer>(),
                     std::make_unique<xAOD::CaloClusterAuxContainer>());
  return sc;
}
 
 
void
CaloClusterStoreHelper::finalizeClusters(
  const EventContext& ctx,
  SG::WriteHandle<xAOD::CaloClusterContainer>& outClusterContainer,
  SG::WriteHandle<CaloClusterCellLinkContainer>& outClusterContainerCellLink)
{
  for (xAOD::CaloCluster* cl : *outClusterContainer) {
    cl->setLink(outClusterContainerCellLink.ptr(), ctx);
  }
}
 
 //Moved to here from CaloRunClusterCorrection
void CaloClusterStoreHelper::copyContainer (const xAOD::CaloClusterContainer* oldColl, xAOD::CaloClusterContainer* newColl) {
  // make a Cluster Container 
  newColl->clear();
  newColl->reserve (oldColl->size());
  for (const xAOD::CaloCluster* oldCluster : *oldColl) { 
    xAOD::CaloCluster* newClu=newColl->push_back(std::make_unique<xAOD::CaloCluster>());
    *newClu=*oldCluster;
    //new xAOD::CaloCluster (*oldCluster)); //Copy c'tor creates a private AuxStore and a private ClusterCellLink obj
  }
  }