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 {
  
  // 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