TrigTauCaloHypoAlg.cxx

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/*
  Copyright (C) 2002-2021 CERN for the benefit of the ATLAS collaboration
*/
 
#include "Gaudi/Property.h"
#include "TrigTauCaloHypoAlg.h"
#include "TrigCompositeUtils/HLTIdentifier.h"
#include "TrigCompositeUtils/TrigCompositeUtils.h"
#include "AthViews/ViewHelper.h"
 
using namespace TrigCompositeUtils;
 
TrigTauCaloHypoAlg::TrigTauCaloHypoAlg( const std::string& name, 
                      ISvcLocator* pSvcLocator ) :
  ::HypoBase( name, pSvcLocator ) {}
 
 
StatusCode TrigTauCaloHypoAlg::initialize() {
  ATH_CHECK( m_hypoTools.retrieve() );
  ATH_CHECK( m_tauJetKey.initialize() );
  renounce( m_tauJetKey );// taus are made in views, so they are not in the EvtStore: hide them
 
  return StatusCode::SUCCESS;
}
 
 
StatusCode TrigTauCaloHypoAlg::execute( const EventContext& context ) const {  
  ATH_MSG_DEBUG ( "Executing " << name() << "..." );
  auto previousDecisionsHandle = SG::makeHandle( decisionInput(), context );
  if( not previousDecisionsHandle.isValid() ) {//implicit
    ATH_MSG_DEBUG( "No implicit RH for previous decisions "<<  decisionInput().key()<<": is this expected?" );
    return StatusCode::SUCCESS;      
  }
  
  ATH_MSG_DEBUG( "Running with "<< previousDecisionsHandle->size() <<" previous decisions");
 
  // new output decisions
  SG::WriteHandle<DecisionContainer> outputHandle = createAndStore(decisionOutput(), context ); 
  auto decisions = outputHandle.ptr();
 
  // input for decision
  std::vector<ITrigTauGenericHypoTool::ClusterInfo> toolInput;
 
  // loop over previous decisions
  int counter=-1;
  for ( const xAOD::TrigComposite* previousDecision: *previousDecisionsHandle ) {
    counter++;
 
    //get RoI
    auto roiELInfo = findLink<TrigRoiDescriptorCollection>( previousDecision, roiString() );
    ATH_CHECK( roiELInfo.isValid() );
    const TrigRoiDescriptor* roi = *(roiELInfo.link);
 
    // get View
    const auto viewEL = previousDecision->objectLink<ViewContainer>( viewString() );
    ATH_CHECK( viewEL.isValid() );
 
    auto tauHandle = ViewHelper::makeHandle( *viewEL, m_tauJetKey, context);
    ATH_CHECK( tauHandle.isValid() );
    ATH_MSG_DEBUG ( "Tau handle size: " << tauHandle->size() << "..." );
 
    if( tauHandle->size() != 1 ) {
      ATH_MSG_DEBUG("Something is wrong, unexpected number of taus " << tauHandle->size() << " is found (expected 1), continuing anyways skipping view");
      continue;
    }
 
    // create new decision
    auto d = newDecisionIn( decisions, hypoAlgNodeName() );
    TrigCompositeUtils::linkToPrevious( d, previousDecision, context );
    d->setObjectLink( roiString(), roiELInfo.link );
 
    auto el = ViewHelper::makeLink( *viewEL, tauHandle, 0 );
    ATH_CHECK( el.isValid() );
    d->setObjectLink( featureString(),  el );
 
    toolInput.emplace_back( d, roi, tauHandle.cptr(), previousDecision );
 
    ATH_MSG_DEBUG( "Added view, roi, tau, previous decision to new decision " << counter << " for view " << (*viewEL)->name()  );
  }
 
  ATH_MSG_DEBUG( "Found "<<toolInput.size()<<" inputs to tools");
 
   
  for ( auto& tool: m_hypoTools ) {
    ATH_CHECK( tool->decide( toolInput ) );
  }
 
  ATH_CHECK( hypoBaseOutputProcessing(outputHandle) );
 
  return StatusCode::SUCCESS;
}