TrigNavSlimmingMTAlg.icc

Go to the documentation of this file.

/*
  Copyright (C) 2002-2022 CERN for the benefit of the ATLAS collaboration
*/
 
template< typename CONTAINER >
StatusCode TrigNavSlimmingMTAlg::doRepack(TrigCompositeUtils::Decision* decision,
  SG::WriteHandle<CONTAINER>* writeHandle,
  const std::string& edgeName) const
{
 
  if (not decision->hasObjectLink(edgeName, ClassID_traits<CONTAINER>::ID())) {
    // Nothing to do
    return StatusCode::SUCCESS;
  }
 
  ElementLink<CONTAINER> current = decision->objectLink<CONTAINER>(edgeName);
  if (!current.isValid()) {
    // TODO: Upgrade this first message to a WARNING once the TriggerAPI for Run3 is filtering on the chains whose final-features get saved into the DAOD_PHYS
    ATH_MSG_DEBUG("Unable to repack '" << edgeName << "' of container type '"<< ClassID_traits<CONTAINER>::typeName() <<"' for '"
      << decision->name() << "' node, the link is invalid.");
    ATH_MSG_DEBUG("Dump of DecisionObject: " << *decision);
    return StatusCode::SUCCESS;
  }
 
  // ROIs have a specialization here w.r.t. xAOD
  // Actually - due to having template issues, this call is not currently templated.
  ATH_CHECK( doRepackCopy(*current, writeHandle) );
 
  ElementLink<CONTAINER> remapped(**writeHandle, (**writeHandle).size()-1);
  decision->setObjectLink<CONTAINER>(edgeName, remapped); // Overwrite the existing link
 
  ATH_MSG_DEBUG("Repacked from index:" << current.index() << " from key:" << current.dataID() 
    << ", to index:" << remapped.index() << " to key:" << remapped.key());
 
  return StatusCode::SUCCESS;
}
 
template< typename CONTAINER >
StatusCode TrigNavSlimmingMTAlg::doRepackCopy(const typename CONTAINER::base_value_type* object,
  SG::WriteHandle<CONTAINER>* writeHandle) const
{
  // Note: writeHandle* de-references to writeHandle which de-references to CONTAINER a.k.a. DataVector<CONTAINER::base_value_type>
  // We call .back() on the CONTAINER to obtain CONTAINER::base_value_type*, this de-references to CONTAINER::base_value_type
  // We end up with CONTAINER::base_value_type = CONTAINER::base_value_type, an assignment operator copy operation duplicates the data.
  (**writeHandle).push_back( new typename CONTAINER::base_value_type() ); 
  *((**writeHandle).back()) = *object;
  return StatusCode::SUCCESS;
}