ISession.h

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/*
  Copyright (C) 2002-2026 CERN for the benefit of the ATLAS collaboration
*/
 
#ifndef INCLUDE_PERSISTENCYSVC_ISESSION_H
#define INCLUDE_PERSISTENCYSVC_ISESSION_H
 
#include "PersistencySvc/IDatabase.h"
#include "PersistencySvc/ITransaction.h"
 
#include "DataModelRoot/RootType.h"
 
#include <string>
#include <memory>
 
class Placement;
class Token;
 
namespace pool {
 
  // forward declarations
  class DatabaseConnectionPolicy;
  class ITechnologySpecificAttributes;
  class IFileCatalog;
  
  namespace PersistencySvc {

    class ISession;
    std::unique_ptr<ISession> createSession( IFileCatalog& catalog );

 
    class ISession : public ITransaction {
    public:
      virtual void setDefaultConnectionPolicy( const DatabaseConnectionPolicy& policy ) = 0;

      virtual const DatabaseConnectionPolicy& defaultConnectionPolicy() const = 0;

      virtual bool disconnectAll() = 0;

      virtual ITransaction& transaction() = 0;
      virtual const ITransaction& transaction() const = 0;

      virtual std::unique_ptr<IDatabase> databaseHandle( const std::string& dbName,
                                                         DatabaseSpecification::NameType dbNameType ) = 0;

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

      virtual Token* registerForWrite( const Placement& place, const void* object, const RootType& type ) = 0;

      virtual IFileCatalog& fileCatalog() = 0;

      virtual const ITechnologySpecificAttributes& technologySpecificAttributes( long technology ) const = 0;
      virtual ITechnologySpecificAttributes& technologySpecificAttributes( long technology ) = 0;

      virtual ~ISession() = default;
    };
  }
}
#endif