ClusterHelpers.h

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/*
  Copyright (C) 2002-2025 CERN for the benefit of the ATLAS collaboration
*/
 
 
 
#ifndef COLUMNAR_CLUSTER_CLUSTER_HELPERS_H
#define COLUMNAR_CLUSTER_CLUSTER_HELPERS_H
 
#include <ColumnarCore/ColumnAccessor.h>
#include <ColumnarCore/VectorColumn.h>
 
#include <ColumnarCluster/ClusterDef.h>
 
#include <xAODCaloEvent/CaloClusterDetails.h>
 
namespace columnar
{
  namespace ClusterHelpers
  {
 
 
    template<ContainerIdConcept CI = ContainerId::cluster,typename CM=ColumnarModeDefault>
    class EnergyBEAccessor final
    {
      ColumnAccessor<CI,std::vector<float>,CM> m_eAcc;
      ColumnAccessor<CI,uint32_t,CM> m_samplingPatternAcc;
 
    public:
 
      typedef CaloSampling::CaloSample CaloSample;
 
      EnergyBEAccessor (ColumnarTool<CM>& columnarTool)
        : m_eAcc (columnarTool, "e_sampl"), m_samplingPatternAcc (columnarTool, "samplingPattern") {}
 
      float operator () (ObjectId<CI,CM> object, const unsigned sample) const
      {
        // Newer xAODs have the sampling pattern as an auxiliary
        // variable which is what we are using by default.  For older
        // xAODs we fall back to the xAOD-only implementation, and hope
        // that we are not in columnar mode.
        const auto samplingPattern = m_samplingPatternAcc.isAvailable(object) ? m_samplingPatternAcc(object) : object.getXAODObject().samplingPattern();
 
        return xAOD::CaloClusterDetails::energyBE(sample, samplingPattern, m_eAcc(object));
      }
    };
 
 
 
    template<ContainerIdConcept CI = ContainerId::cluster,typename CM=ColumnarModeDefault>
    class EtaBEAccessor final
    {
      ColumnAccessor<CI,std::vector<float>,CM> m_eAcc;
      ColumnAccessor<CI,std::vector<float>,CM> m_etaAcc;
      ColumnAccessor<CI,uint32_t,CM> m_samplingPatternAcc;
 
    public:
 
      typedef CaloSampling::CaloSample CaloSample;
 
      EtaBEAccessor (ColumnarTool<CM>& columnarTool)
        : m_eAcc (columnarTool, "e_sampl"), m_etaAcc (columnarTool, "eta_sampl"), m_samplingPatternAcc (columnarTool, "samplingPattern") {}
 
      float operator () (ObjectId<CI,CM> object, const unsigned sample) const
      {
        // Newer xAODs have the sampling pattern as an auxiliary
        // variable which is what we are using by default.  For older
        // xAODs we fall back to the xAOD-only implementation, and hope
        // that we are not in columnar mode.
        const auto samplingPattern = m_samplingPatternAcc.isAvailable(object) ? m_samplingPatternAcc(object) : object.getXAODObject().samplingPattern();
 
        return xAOD::CaloClusterDetails::etaBE(sample, samplingPattern, m_eAcc(object), m_etaAcc(object));
      }
    };
  }
}
 
#endif