DatabaseHandler.h

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/*
  Copyright (C) 2002-2026 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 IStorageSvc;
  class IContainer;

 
  class DatabaseHandler {
  public:
    DatabaseHandler( IStorageSvc& storageSvc,
                     long technology,
                     const std::string& fid,
                     const std::string& pfn,
                     Io::IoFlag accessmode );

    ~DatabaseHandler();

    bool commitTransaction();

    bool commitAndHoldTransaction();

    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;

    Io::IoFlag 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;
    FileDescriptor    m_fileDescriptor;
    long              m_technology;
    Io::IoFlag        m_accessMode;
  };
}
 
#endif