DatabaseHandler.h

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/*
  Copyright (C) 2002-2021 CERN for the benefit of the ATLAS collaboration
*/
 
#ifndef INCLUDE_PERSISTENCYSVC_DATABASEHANDLER_H
#define INCLUDE_PERSISTENCYSVC_DATABASEHANDLER_H
 
#include "StorageSvc/FileDescriptor.h"
#include "StorageSvc/DbDatabase.h"
#include <vector>
#include <set>
#include <utility>
 
class Guid;
class Token;
 
namespace pool {
 
  // forward declarations
  class Session;
  class IStorageSvc;
  class IStorageExplorer;
  class IContainer;
 
  namespace PersistencySvc {

 
    class DatabaseHandler {
    public:
      DatabaseHandler( IStorageSvc& storageSvc,
                       IStorageExplorer& storageExplorer,
                       Session* session,
                       long technology,
                       const std::string& fid,
                       const std::string& pfn,
                       long accessmode );

      ~DatabaseHandler();

      bool commitTransaction();

      bool commitAndHoldTransaction();

      void rollBackTransaction();

      bool disconnectTransaction();

      std::vector< std::string > containers();

      IContainer* container( const std::string& containerName );

      const std::string& pfn() const;

      const std::string& fid() const;

      long technology() const;

      long accessMode() const;

      Token* writeObject( const std::string& containerName,
                          long minorTechnology,
                          const void* object,
                          const RootType& type );

      void* readObject( const Token& token, void* object = 0 );

      bool attribute( const std::string& attributeName,
                      void* data,
                      const std::type_info& typeInfo,
                      const std::string& option );

      bool setAttribute( const std::string& attributeName,
                         const void* data,
                         const std::type_info& typeInfo,
                         const std::string& option );
 
    private:
      IStorageSvc&      m_storageSvc;
      IStorageExplorer& m_storageExplorer;
      Session*          m_session;
      FileDescriptor    m_fileDescriptor;
      long              m_technology;
      long              m_accessMode;
    };
  }
}
 
#endif