include/Geant4/G4RootHnRFileManager.hh

0001 //
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0025 //
0026
0027 // The manager class for histogram/profile reading from a Root file.
0028
0029 // Author: Ivana Hrivnacova, 26/08/2021  (ivana@ipno.in2p3.fr)
0030
0031 #ifndef G4RootHnRFileManager_h
0032 #define G4RootHnRFileManager_h 1
0033
0034 #include "G4VTHnRFileManager.hh"
0035
0036 #include <string_view>
0037 #include <tuple>
0038
0039 class G4RootRFileManager;
0040
0041 namespace tools {
0042 namespace rroot {
0043 class buffer;
0044 class TDirectory;
0045 }
0046 }
0047
0048 template <typename HT>
0049 class G4RootHnRFileManager : public G4VTHnRFileManager<HT>
0050 {
0051   public:
0052     explicit G4RootHnRFileManager(G4RootRFileManager* rfileManger)
0053       : G4VTHnRFileManager<HT>(), fRFileManager(rfileManger) {}
0054     G4RootHnRFileManager() = delete;
0055     ~G4RootHnRFileManager() override = default;
0056
0057     // Methods for reading objects
0058     HT* Read(const G4String& htName, const G4String& fileName, const G4String& dirName,
0059       G4bool isUserFileName) final;
0060
0061   private:
0062     // Methods
0063     tools::rroot::buffer* GetBuffer(
0064                              const G4String& fileName,
0065                              const G4String& dirName,
0066                              const G4String& name);
0067     HT* ReadT(tools::rroot::buffer* buffer);
0068
0069     // Static data members
0070     static constexpr std::string_view fkClass { "G4RootHnRFileManager<HT>" };
0071     // Data members
0072     G4RootRFileManager* fRFileManager { nullptr };
0073 };
0074
0075 // inline functions
0076
0077 #include "G4RootHnRFileManager.icc"
0078
0079 #endif