RNTCollection.h

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/*
  Copyright (C) 2002-2024 CERN for the benefit of the ATLAS collaboration
*/
 
#ifndef RNTCOLLECTION_H
#define RNTCOLLECTION_H
 
//#include "RNTCollectionDataEditor.h"
//#include "RNTCollectionSchemaEditor.h"
 
#include "CollectionBase/ICollection.h"
#include "CollectionBase/CollectionDescription.h"
 
#include "FileCatalog/IFileCatalog.h"
#include "CoralBase/MessageStream.h"
 
#include "GaudiKernel/IFileMgr.h"
#include "Gaudi/PluginService.h"
 
#include <string>
#include <vector>
 
class TFile;
class IFileMgr;
 
// Import classes from experimental namespace for the time being
namespace ROOT::Experimental {
   class RNTupleReader;
}
 
namespace pool {
 
   class ISession; 
 
   namespace RootCollection {
 
      using RNTupleReader = ROOT::Experimental::RNTupleReader;
      class Attribute;
      class AttributeSpecification;
      class RNTCollectionSchemaEditor;
  
      class RNTCollection :  public ICollection {
    
     public:
    typedef Gaudi::PluginService::Factory<ICollection*( const ICollectionDescription*, ICollection::OpenMode, ISession*)> Factory;
    
        
    
        RNTCollection(  const pool::ICollectionDescription* description,
                         pool::ICollection::OpenMode mode,
                         pool::ISession* );
 
        ~RNTCollection();
    
        virtual ICollection::OpenMode openMode() const; 
 
        virtual void open();
    
        virtual bool isOpen() const;
 
        virtual void commit( bool restartTransaction = false );
    
        virtual void close();
    
        virtual const ICollectionDescription& description() const;
 
        virtual ICollectionSchemaEditor&      schemaEditor();
 
        virtual ICollectionDataEditor&        dataEditor();
 
        virtual ICollectionQuery*             newQuery();
 
     private:    
        RNTCollection(const RNTCollection &) = delete;
        RNTCollection & operator = (const RNTCollection &) = delete;
    
        void delayedFileOpen( const std::string& method );
        std::unique_ptr< RNTupleReader > getCollectionRNTuple();
 
        bool fileCatalogRequired() const;
        std::string retrievePFN() const;
        std::string retrieveFID();
        std::string retrieveUniquePFN(const FileCatalog::FileID& fid);
        std::string retrieveBestPFN(const FileCatalog::FileID& fid)const;  
        void retrieveFileCatalog()const;
 
        void cleanup();
 
        std::unique_ptr< RNTupleReader >     m_reader;
        CollectionDescription                m_description;
        
        std::string                          m_name;
        std::string                          m_fileName;
        ICollection::OpenMode                m_mode;
        TFile*                               m_file;
        ISession*                            m_session;
        bool                                 m_open;
        bool                                 m_readOnly;
        
        std::unique_ptr<pool::IFileCatalog> m_fileCatalog;
        coral::MessageStream                m_poolOut;
 
        std::unique_ptr<RNTCollectionSchemaEditor>   m_schemaEditor;
        ICollectionDataEditor*            m_dataEditor;
 
        IFileMgr*                           m_fileMgr;
      };
   }
}
#endif