DatabaseRegistry.h

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/*
  Copyright (C) 2002-2017 CERN for the benefit of the ATLAS collaboration
*/
 
#ifndef INCLUDE_PERSISTENCYSVC_DATABASEREGISTRY_H
#define INCLUDE_PERSISTENCYSVC_DATABASEREGISTRY_H
 
#include <string>
#include <set>
#include <map>
 
namespace pool {
  
  namespace PersistencySvc {
 
    // Forward declarations
    class DatabaseHandler;
 
    class DatabaseRegistry {
    public:
      explicit DatabaseRegistry();

      ~DatabaseRegistry();

      void registerDatabaseHandler( DatabaseHandler* dbHandler );

      void registerDatabaseHandler( DatabaseHandler* dbHandler,
                    const std::string& lfn );

      void deregisterDatabaseHandler( DatabaseHandler* dbHandler );

      DatabaseHandler* lookupByFID( const std::string& fid );

      DatabaseHandler* lookupByPFN( const std::string& pfn );

      DatabaseHandler* lookupByLFN( const std::string& lfn );
 
      typedef std::set< DatabaseHandler* >::iterator iterator;
      typedef std::set< DatabaseHandler* >::const_iterator const_iterator;

      iterator begin();
      const_iterator begin() const;

      iterator end();
      const_iterator end() const;

      std::size_t size() const;
 
    private:
      std::set< DatabaseHandler* >                     m_databases;
      std::map< std::string, DatabaseHandler* >        m_fidToDb;
      std::map< std::string, DatabaseHandler* >        m_pfnToDb;
      std::map< std::string, DatabaseHandler* >        m_lfnToDb;
      std::map< std::string, std::set< std::string > > m_fidToLfns;
 
      // Registers a database
      std::set< DatabaseHandler* >::iterator registerDbHandler( DatabaseHandler* dbHandler );
    };
  }
}
 
#include "DatabaseRegistry.inl"
 
#endif