PMGTruthWeightAlg.cxx

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/*
  Copyright (C) 2002-2024 CERN for the benefit of the ATLAS collaboration
*/

 
 
//
// includes
//
 
#include <AsgAnalysisAlgorithms/PMGTruthWeightAlg.h>
 
//
// method implementations
//
 
namespace CP
{
 
  StatusCode PMGTruthWeightAlg ::
  initialize ()
  {
    if (m_decoration.empty())
    {
      ANA_MSG_ERROR ("no decoration name set");
      return StatusCode::FAILURE;
    }
 
    ANA_CHECK (m_truthWeightTool.retrieve());
    ANA_CHECK (m_systematicsList.addSystematics (*m_truthWeightTool));
    ANA_CHECK (m_eventInfoHandle.initialize (m_systematicsList));
    ANA_CHECK (m_decoration.initialize (m_systematicsList, m_eventInfoHandle));
    ANA_CHECK (m_systematicsList.initialize());
 
    return StatusCode::SUCCESS;
  }
 
 
  StatusCode PMGTruthWeightAlg ::
  execute (const EventContext& ctx)
  {
    for (const auto& sys : m_systematicsList.systematicsVector())
    {
      const xAOD::EventInfo *eventInfo = nullptr;
      ANA_CHECK (m_eventInfoHandle.retrieve (eventInfo, sys, ctx));
 
      m_decoration.set (*eventInfo, m_truthWeightTool->getSysWeight(eventInfo,sys), sys);
    }
 
    return StatusCode::SUCCESS;
  }
}