RAuxStore.h

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// Copyright (C) 2002-2026 CERN for the benefit of the ATLAS collaboration
#ifndef XAODROOTACCESS_RAUXSTORE_H
#define XAODROOTACCESS_RAUXSTORE_H
 
// Local include(s).
#include "xAODRootAccess/tools/AuxStoreBase.h"
 
// ROOT include(s).
#include <ROOT/REntry.hxx>
#include <ROOT/RNTupleModel.hxx>
#include <ROOT/RNTupleReader.hxx>
#include <ROOT/RNTupleWriter.hxx>
 
// System include(s).
#include <cstdint>
#include <memory>
#include <string_view>
 
// Make the RNTuple types available in the ROOT namespace
// with all versions of ROOT.
#if ROOT_VERSION_CODE < ROOT_VERSION(6, 35, 1)
namespace ROOT {
using Experimental::RNTupleReader;
using Experimental::RNTupleWriter;
using Experimental::REntry;
}  // namespace ROOT
#endif  // ROOT_VERSION_CODE < ROOT_VERSION(6, 36, 0)
 
 
// Forward declaration(s):
class EventContext;
 
namespace xAOD {

class RAuxStore : public details::AuxStoreBase {
 
 public:
  RAuxStore(const EventContext& ctx,
            std::string_view prefix = "", bool topStore = true,
            EStructMode mode = EStructMode::kUndefinedStore);
  virtual ~RAuxStore();

  virtual void setPrefix(std::string_view prefix) override;

  StatusCode readFrom(ROOT::RNTupleReader& reader);
  StatusCode writeTo(ROOT::RNTupleWriter& writer);

  StatusCode getEntry(std::int64_t entry, int getall = 0);
  StatusCode commitTo(ROOT::REntry& entry);


  virtual void reset() override;
 
 private:
  virtual bool hasEntryFor(SG::auxid_t auxid) const override;
  virtual StatusCode getEntryFor(SG::auxid_t auxid) override;
  virtual bool hasOutput() const override;

  virtual StatusCode setupInputData(SG::auxid_t auxid) override;
  virtual StatusCode setupOutputData(SG::auxid_t auxid) override;

  virtual const void* getInputObject(SG::auxid_t auxid) const override;
  virtual const std::type_info* getInputType(SG::auxid_t auxid) const override;


  struct impl;
  std::unique_ptr<impl> m_impl;
 
};  // class RAuxStore
}  // namespace xAOD
 
#endif  // XAODROOTACCESS_RAUXSTORE_H