MomentumAccessorExampleTool.h

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/*
  Copyright (C) 2002-2025 CERN for the benefit of the ATLAS collaboration
*/
 
 
 
#ifndef COLUMNAR_EXAMPLE_TOOLS_MOMENTUM_ACCESSOR_EXAMPLE_TOOL_H
#define COLUMNAR_EXAMPLE_TOOLS_MOMENTUM_ACCESSOR_EXAMPLE_TOOL_H
 
#include <AsgTools/AsgTool.h>
#include <AsgTools/PropertyWrapper.h>
#include <ColumnarCore/ColumnAccessor.h>
#include <ColumnarCore/ColumnarTool.h>
#include <ColumnarCore/MomentumAccessors.h>
#include <ColumnarCore/ObjectColumn.h>
#include <ColumnarCore/ObjectTypeAccessor.h>
#include <ColumnarCore/ParticleDef.h>
 
namespace columnar
{
 
  class MomentumAccessorExampleTool final
    : public asg::AsgTool,
      public ColumnarTool<>
  {
  public:
 
    // Create a proper constructor for Athena
    ASG_TOOL_CLASS( MomentumAccessorExampleTool, asg::IAsgTool )
 
    MomentumAccessorExampleTool (const std::string& name);
 
    virtual StatusCode initialize () override;
 
    void callSingleEvent (ParticleRange particles) const;
 
    virtual void callEvents (EventContextRange events) const override;
 
 
    Gaudi::Property<float> m_energyCut {this, "energyCut", 10e3, "energy cut (in MeV)"};
 
 
    ParticleAccessor<ObjectColumn> particlesHandle {*this, "Particles"};
 
 
    MomentumAccessors<ContainerId::particle> momAcc;
 
    ObjectTypeAccessor<ContainerId::particle> objectTypeAcc {*this, "ObjectType", "the object type of the particles"};
 
    // If you want to use a statically configured momentum accessor,
    // this would be the basic way to do it. For now (24 Jul 25) I don't
    // think this is worth the effort, as the dynamic momentum accessors
    // seem to be working pretty well.
    // Detail::FullMomentumAccessorsPtEtaPhiM<Detail::CoreMomentumAccessorsPtEtaPhiReadM<ContainerId::particle,ColumnarModeDefault>> momAcc {*this};
 
 
    ParticleDecorator<char> selectionDec {*this, "selection"};
  };
}
 
#endif