transformer.cpp

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* (c) Copyright 1998-2019 CERN for the benefit of the LHCb and ATLAS collaborations *
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* This software is distributed under the terms of the Apache version 2 licence,     *
* copied verbatim in the file "LICENSE".                                            *
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#include <algorithm>
 
#include "GaudiAlg/Transformer.h"
 
// Event Model related classes
#include "GaudiExamples/MyTrack.h"
 
namespace Gaudi {
  namespace Examples {
 
    struct SelectTracks final : Functional::Transformer<Gaudi::Examples::MyTrack::Selection(
                                    const Gaudi::Range_<Gaudi::Examples::MyTrack::ConstVector>& )> {
 
      SelectTracks( const std::string& name, ISvcLocator* pSvc )
          : Transformer( name, pSvc, { KeyValue( "InputData", { "MyTracks" } ) },
                         KeyValue( "OutputData", { "MyOutTracks" } ) ) {}
 
      Gaudi::Examples::MyTrack::Selection
      operator()( const Gaudi::Range_<Gaudi::Examples::MyTrack::ConstVector>& in_tracks ) const override {
        Gaudi::Examples::MyTrack::Selection out_tracks;
        out_tracks.insert( in_tracks.begin(), in_tracks.end(), []( const MyTrack* t ) { return t->px() >= 10.; } );
        return out_tracks;
      }
    };
 
    DECLARE_COMPONENT( SelectTracks )
  } // namespace Examples
} // namespace Gaudi