RootTreeIndexContainer.h

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/*
 *   Copyright (C) 2002-2025 CERN for the benefit of the ATLAS collaboration
 *   */
 
#ifndef POOL_ROOTTREEINDEXCONTAINER_H
#define POOL_ROOTTREEINDEXCONTAINER_H 1
 
#include "RootTreeContainer.h"
 
#include <cstdint>
 
// Forward declarations
class TTree;
class TBranch;
 
namespace pool {
 
   class RootTreeIndexContainer : public RootTreeContainer {
   public:
      explicit RootTreeIndexContainer(const std::string& name);
      RootTreeIndexContainer (const RootTreeIndexContainer&) = delete;
      RootTreeIndexContainer& operator= (const RootTreeIndexContainer&) = delete;
 
      virtual ~RootTreeIndexContainer() override {}

      virtual DbStatus open(DbDatabase&, const std::string&, const DbTypeInfo*, DbAccessMode) override final;

      virtual uint64_t nextRecordId() override final;

      virtual void useNextRecordId( uint64_t ) override final;


      virtual DbStatus loadObject( void** ptr, ShapeH shape, 
                                   Token::OID_t& oid) override;
      
      virtual DbStatus writeObject(ActionList::value_type&) override;
 
   private:
      TBranch*          m_indexBranch;
 
      uint64_t          m_index_entries;

      const uint32_t    m_index_multi;

      Long64_t          m_index;

      int64_t           m_indexBump;

      bool              m_firstRead;
   };
}
#endif //POOL_ROOTTREEINDEXCONTAINER_H