TauxAODHelpers.icc

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/*
  Copyright (C) 2002-2024 CERN for the benefit of the ATLAS collaboration
*/
 
#include "AthContainers/ConstAccessor.h"
 
template<class T>
const T* xAOD::TauHelpers::getLink(const xAOD::IParticle* particle, const std::string& name, bool debug)
{
  if (!particle) return 0;
  typedef ElementLink< DataVector<T> > Link_t;
  
  static const SG::ConstAccessor< Link_t > acc( name );
  if (!acc.isAvailable( *particle ) )
  { 
    if (debug) std::cerr<< "Link not available" << std::endl; 
    return 0; 
  }  
  const Link_t link = acc( *particle );
  if (!link.isValid()) 
  { 
    if (debug) std::cerr << "Invalid link" << std::endl; 
    return 0; 
  }
  return *link;
}