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TupleDetail.h

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// $Id: TupleDetail.h,v 1.2 2004/10/18 08:18:00 mato Exp $
#ifndef GAUDIALG_TUPLEDETAIL_H 
#define GAUDIALG_TUPLEDETAIL_H 1
// ============================================================================
// Include files
// ============================================================================
#include "GaudiAlg/Tuples.h"
#include "GaudiAlg/Tuple.h"
#include "GaudiAlg/TupleObj.h"
// ============================================================================

// ============================================================================
// ============================================================================

namespace Tuples
{
  namespace detail 
  {  
    template<class HANDLER1, class HANDLER2>
    class TupleObjImp: public TupleObj
    {
    public:
      TupleObjImp ( HANDLER1              handler1                      , 
                    HANDLER2              handler2                      , 
                    const std::string&    name                          , 
                    NTuple::Tuple*        tuple                         ,
                    const CLID&           clid = CLID_ColumnWiseTuple   ,
                    const Tuples::Type    type = Tuples::NTUPLE         ) 
        : TupleObj ( name , tuple , clid, type ) 
        , m_handler1 ( handler1 ) 
        , m_handler2 ( handler2 ) 
      {};
    public:
      
      virtual StatusCode Error   
      ( const std::string& msg , 
        const StatusCode   sc  = StatusCode::FAILURE ) const
      { m_handler1 ( name() + msg , sc  ) ; return sc ; }
      
      virtual StatusCode Warning 
      ( const std::string& msg ,
        const StatusCode   sc  = StatusCode::FAILURE ) const 
      { m_handler2 ( name() + msg , sc  ) ; return sc ; }
      
    protected:
      virtual ~TupleObjImp(){}
    private:
      HANDLER1 m_handler1 ;
      HANDLER2 m_handler2 ;
    };
    
    template<class HANDLER1, class HANDLER2>
    inline TupleObj* createTupleObj
    ( HANDLER1 handler1  , 
      HANDLER2 handler2  ,
      const std::string& name                          , 
      NTuple::Tuple*     tuple                         ,
      const CLID&        clid = CLID_ColumnWiseTuple   ,
      const Tuples::Type type = Tuples::NTUPLE         )
    {
      return new TupleObjImp<HANDLER1,HANDLER2> 
        ( handler1 , handler2 ,
          name     , tuple    , clid     , type  ) ;  
    }
    
    template <class OBJECT, class FUNCTION>
    class ErrorHandler
    {
    public:
      ErrorHandler( const OBJECT* obj , 
                    FUNCTION      fun ) 
        : m_obj ( obj ) , m_fun ( fun ) {};
    public:
      StatusCode operator() ( const std::string& msg     , 
                              const StatusCode   sc      , 
                              const size_t       mp = 10 ) const 
      {
        return (m_obj->*m_fun)( msg , sc , mp ) ; 
      }
    private:
      // defualt constructor is private 
      ErrorHandler();
    private:
      const OBJECT* m_obj ;
      FUNCTION      m_fun ;
    };
    
    template <class OBJECT, class FUNCTION>
    inline ErrorHandler<OBJECT,FUNCTION> 
    make_handler ( const OBJECT* object   , 
                   FUNCTION      function ) 
    { return ErrorHandler<OBJECT,FUNCTION>( object , function ); };
    
  };
  
  template <class OWNER>
  inline TupleObj* createTupleObj 
  ( const OWNER*       owner                         , 
    const std::string& name                          , 
    NTuple::Tuple*     tuple                         ,
    const CLID&        clid = CLID_ColumnWiseTuple   ,
    const Tuples::Type type = Tuples::NTUPLE         )
  {
    return detail::createTupleObj
      ( detail::make_handler ( owner , &OWNER::Error   ) , 
        detail::make_handler ( owner , &OWNER::Warning ) , 
        name , tuple , clid , type ) ;  
  };
  
}; // end of namespace Tuples 



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// The END 
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#endif // GAUDIALG_TUPLEDETAIL_H
// ============================================================================

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