/cvmfs/atlas.cern.ch/repo/sw/ASG/AnalysisBase/2.4.31/AsgTools/AsgTools/SgTEventMeta.h

// Dear emacs, this is -*- c++ -*-
// $Id: SgTEventMeta.h 611829 2014-08-14 13:53:41Z krasznaa $
#ifndef ASGTOOLS_SGTEVENTMETA_H
#define ASGTOOLS_SGTEVENTMETA_H

// Local include(s):
#include "AsgTools/AsgToolsConf.h"
#include "AsgTools/StatusCode.h"

// Complain if we try using this header in Athena:
#ifdef ASGTOOL_ATHENA
#   error "This header should not be used in Athena"
#endif // ASGTOOL_ATHENA

// Forward declaration(s):
namespace xAOD {
   class TEvent;
} // namespace xAOD

namespace asg {

   class SgTEventMeta {

   public:
      enum StoreType {
         InputStore  = 0, 
         OutputStore = 1  
      }; // enum StoreType

      SgTEventMeta( StoreType type, xAOD::TEvent* event = 0 );


      template< typename T >
      bool contains( const std::string& name );
      template< typename T >
      bool transientContains( const std::string& name ) const;

      template< typename T >
      StatusCode retrieve( T*& obj, const std::string& name );
      template< typename T >
      StatusCode retrieve( const T*& obj, const std::string& name );

      template< typename T >
      StatusCode record( T* obj, const std::string& name );


   private:
      StatusCode initialize() const;

      StoreType m_type;
      mutable xAOD::TEvent* m_event;

   }; // class SgTEventMeta

} // namespace asg

// Include the template implementation:
#include "AsgTools/SgTEventMeta.icc"

#endif // ASGTOOLS_SGTEVENTMETA_H

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