include/Geant4/G4EmDataRegistry.hh

0001 //
0002 // ********************************************************************
0003 // * License and Disclaimer                                           *
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0019 // * technical work of the GEANT4 collaboration.                      *
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0024 // ********************************************************************
0025 //
0026 // 18 April 2024   V.Ivanchenko
0027 //
0028 // This is a singleton class to store shared EM physics data.
0029 // The access to data is possible only by data name.
0030 // Once created data pointers does not changed or deleted until the
0031 // end of the job, this class is responsible for destruction.
0032 //
0033
0034 #ifndef G4EmDataRegistry_h
0035 #define G4EmDataRegistry_h 1
0036
0037 #include <vector>
0038 #include "G4EmDataHandler.hh"
0039
0040 class G4EmDataRegistry
0041 {
0042  public:
0043
0044   static G4EmDataRegistry* Instance();
0045
0046   ~G4EmDataRegistry();
0047
0048   // create or access data handler
0049   // nTable - number of tables in a new handler
0050   G4EmDataHandler* GetHandlerByName(const G4String&, std::size_t nTable);
0051
0052   // register a new handler
0053   void Register(G4EmDataHandler*);
0054
0055   // hide assignment operator
0056   G4EmDataRegistry& operator=(const G4EmDataRegistry &right) = delete;
0057   G4EmDataRegistry(const G4EmDataRegistry&) = delete;
0058
0059  private:
0060
0061   G4EmDataRegistry();
0062
0063   G4EmDataHandler* EmDataHandler(const G4String&);
0064
0065   static G4EmDataRegistry* instance;
0066
0067   std::vector<G4EmDataHandler*> fDataHandlers;
0068 };
0069
0070 #endif