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# HepRndmGenerator.h

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    00001 //====================================================================
    00002 //      CLHEP Random Generator definition file
    00003 //--------------------------------------------------------------------
    00004 //
    00005 //      Package    : HepRndm ( The LHCb Offline System)
    00006 //      Author     : M.Frank
    00007 //  History    :
    00008 // +---------+----------------------------------------------+---------
    00009 // |    Date |                 Comment                      | Who
    00010 // +---------+----------------------------------------------+---------
    00011 // | 29/10/99| Initial version                              | MF
    00012 // +---------+----------------------------------------------+---------
    00013 //
    00014 //====================================================================
    00015 #ifndef HEPRNDM_HEPRNDMGENERATOR_H
    00016 #define HEPRNDM_HEPRNDMGENERATOR_H 1
    00017
    00018 // Framework include files
    00019 #include "RndmGen.h"
    00020 #include "RndmGenSvc.h"
    00021
    00022 #include "HepRndmBaseEngine.h"
    00023
    00024 namespace HepRndm  {
    00025
    00026   template <class TYPE>
    00027   class Generator : public RndmGen   {
    00028   public:
    00029     typedef TYPE Parameters;
    00030   protected:
    00031     CLHEP::HepRandomEngine* m_hepEngine;
    00032     TYPE*            m_specs;
    00033   public:
    00034     Generator(IInterface* engine);
    00035     virtual ~Generator();
    00037     virtual StatusCode initialize(const IRndmGen::Param& par);
    00039     virtual double shoot()  const;
    00040   };
    00041
    00042   template <class TYPE> Generator<TYPE>::Generator(IInterface* engine)
    00043   : RndmGen (engine), m_hepEngine(0), m_specs(0)    {
    00044   }
    00045
    00046   template <class TYPE> Generator<TYPE>::~Generator()    {
    00047   }
    00048
    00050   template <class TYPE> StatusCode Generator<TYPE>::initialize(const IRndmGen::Param& par)   {
    00051     StatusCode status = RndmGen::initialize(par);
    00052     if ( status.isSuccess() )   {
    00053       try   {
    00054         m_specs = dynamic_cast<TYPE*>(m_params);
    00055         if ( 0 != m_specs )  {
    00056           BaseEngine* engine = dynamic_cast<BaseEngine*>(m_engine);
    00057           if ( 0 != engine )    {
    00058             m_hepEngine = engine->hepEngine();
    00059             if ( 0 != m_hepEngine )   {
    00060               return StatusCode::SUCCESS;
    00061             }
    00062           }
    00063         }
    00064       }
    00065       catch (...)   {
    00066       }
    00067     }
    00068     return StatusCode::FAILURE;
    00069   }
    00070 }
    00071
    00072 #endif // HEPRNDM_HEPRNDMGENERATOR_H