SysReadSelectionHandle.h

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/*
  Copyright (C) 2002-2024 CERN for the benefit of the ATLAS collaboration
*/

 
 
#ifndef SYS_SELECTION_HELPERS_SELECTION_READ_HANDLE_H
#define SYS_SELECTION_HELPERS_SELECTION_READ_HANDLE_H
 
#include <AsgDataHandles/VarHandleKey.h>
#include <AthContainers/AuxElement.h>
#include <AsgMessaging/AsgMessagingForward.h>
#include <SystematicsHandles/ISysHandleBase.h>
#include <SystematicsHandles/SysHandleArray.h>
#include <memory>
 
class StatusCode;
 
namespace CP
{
  class ISelectionReadAccessor;
  class SysListHandle;
  class SystematicSet;
 

 
  class SysReadSelectionHandle final
    : public ISysHandleBase, public asg::AsgMessagingForward
  {
    //
    // public interface
    //

  public:
    template<typename T2>
    SysReadSelectionHandle (T2 *owner, const std::string& propertyName,
                            const std::string& propertyValue,
                            const std::string& propertyDescription);

    template<typename T2>
    SysReadSelectionHandle (const std::string& selection, T2 *owner);
 

  public:
    explicit operator bool () const noexcept;
 

  public:
    StatusCode initialize (SysListHandle& sysListHandle, ISysObjectHandleBase& objectHandle);
    StatusCode initialize (SysListHandle& sysListHandle, ISysObjectHandleBase& objectHandle, SG::AllowEmptyEnum);
 

  public:
    bool getBool (const SG::AuxElement& element,
                  const CP::SystematicSet& sys) const;

  public:
    const std::string& getSelectionName() const;

 
  public:
    virtual bool empty () const noexcept override;
    virtual CP::SystematicSet
    getInputAffecting (const ISystematicsSvc& svc) const override;
    virtual StatusCode
    fillSystematics (const ISystematicsSvc& svc,
                     const CP::SystematicSet& fullAffecting,
                     const std::vector<CP::SystematicSet>& sysList) override;
 
 
 
    //
    // private interface
    //

  private:
    std::string m_selection;

  private:
    ISysObjectHandleBase *m_objectHandle {nullptr};

  private:
    std::unique_ptr<ISelectionReadAccessor> m_accessor;
  };
 
  using SysReadSelectionHandleArray = SysHandleArray<SysReadSelectionHandle>;
}
 
#include "SysReadSelectionHandle.icc"
 
#endif