patch constructor call to model

new patch switched to enums

Author: tomeichlersmith

src/SimCore/APrimePhysics.cxx

@@ -42,13 +42,24 @@ void APrimePhysics::ConstructProcess() {
     auto model{parameters_.getParameter<framework::config::Parameters>("model")};
     auto model_name{model.getParameter<std::string>("name")};
     if (model_name == "vertex_library" or model_name == "g4db") {
+      static const std::map<std::string,g4db::G4DarkBreMModel::ScalingMethod> method_lut = {
+        { "forward_only", g4db::G4DarkBreMModel::ScalingMethod::ForwardOnly },
+        { "cm_scaling"  , g4db::G4DarkBreMModel::ScalingMethod::CMScaling },
+        { "undefined"   , g4db::G4DarkBreMModel::ScalingMethod::Undefined }
+      };
+      auto scaling_method_it{method_lut.find(model.getParameter<std::string>("method"))};
+      if (scaling_method_it == method_lut.end()) {
+        EXCEPTION_RAISE("BadConf","Unrecognized scaling method '"+
+            model.getParameter<std::string>("method") + "',"
+            " options are 'forward_only', 'cm_scaling', or 'undefined'.");
+      }
       auto proc = new G4DarkBremsstrahlung(
         std::make_shared<g4db::G4DarkBreMModel>(
-              model.getParameter<std::string>("method"),
+              model.getParameter<std::string>("library_path"),
+              false /* dark brem off muons instead of electrons - we always DB off electrons here */,
               model.getParameter<double>("threshold"),
               model.getParameter<double>("epsilon"),
-              model.getParameter<std::string>("library_path"),
-              false /* dark brem off muons instead of electrons - we always DB off electrons here */),
+              scaling_method_it->second),
           parameters_.getParameter<bool>("only_one_per_event"),
           1., /* global bias - should use bias operator instead */
           parameters_.getParameter<bool>("cache_xsec"));