MetBuilderAlg.cxx

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/*
  Copyright (C) 2002-2025 CERN for the benefit of the ATLAS collaboration
*/

 
 
 
//
// includes
//
 
#include <MetAnalysisAlgorithms/MetBuilderAlg.h>
 
#include <METUtilities/METHelpers.h>
 
//
// method implementations
//
 
namespace CP
{
  // accessors and decorators
  // these are done at file-level to register types with output algorithms
  const static SG::Decorator<float> met_met_dec("met");
  const static SG::Decorator<float> met_phi_dec("phi");
 
  StatusCode MetBuilderAlg ::
  initialize ()
  {
    ANA_CHECK (m_metHandle.initialize (m_systematicsList));
    ANA_CHECK (m_systematicsList.initialize());
    return StatusCode::SUCCESS;
  }
 
 
 
  StatusCode MetBuilderAlg ::
  execute (const EventContext& ctx)
  {
    for (const auto& sys : m_systematicsList.systematicsVector())
    {
      xAOD::MissingETContainer *met {};
      ANA_CHECK (m_metHandle.getCopy (met, sys, ctx));
 
      xAOD::MissingET *softTerm = (*met)[m_softTerm];
      if (softTerm == nullptr)
      {
        ANA_MSG_ERROR ("could not find MET soft-term: " << m_softTerm);
        return StatusCode::FAILURE;
      }
      ANA_CHECK (met::buildMETSum (m_finalKey, met, softTerm->source()));
 
      for (const xAOD::MissingET *metTerm : (*met))
      {
        if (!metTerm)
        {
          ANA_MSG_WARNING("failed to retrieve MET term to decorate met and phi aux vars!");
          continue;
        }
        met_met_dec(*metTerm) = metTerm->met();
        met_phi_dec(*metTerm) = metTerm->phi();
      }
    }
 
    return StatusCode::SUCCESS;
  }
}