DD4hep: Sim Application Based on DD4hep

Configuration/Geometry/python/DD4hep_GeometrySim_cff.py

@@ -0,0 +1,14 @@
+import FWCore.ParameterSet.Config as cms
+
+#
+# Geometry master configuration
+#
+# Ideal geometry, needed for simulation
+DDDetectorESProducer = cms.ESSource("DDDetectorESProducer",
+                                    confGeomXMLFiles = cms.FileInPath('DetectorDescription/DDCMS/data/cms-2015-muon-geometry.xml'),
+                                    appendToDataLabel = cms.string('')
+)
+
+DDSpecParRegistryESProducer = cms.ESProducer("DDSpecParRegistryESProducer",
+                                             appendToDataLabel = cms.string('')
+)

Configuration/StandardSequences/python/DD4hep_GeometrySim_cff.py

@@ -0,0 +1,3 @@
+import FWCore.ParameterSet.Config as cms
+
+from Configuration.Geometry.DD4hep_GeometrySim_cff import *

Configuration/StandardSequences/python/DD4hep_SimIdeal_cff.py

@@ -0,0 +1,7 @@
+import FWCore.ParameterSet.Config as cms
+
+# CMSSW/Geant4 interface
+from SimG4Core.Configuration.DD4hep_SimG4Core_cff import *
+
+psimTask = cms.Task(cms.TaskPlaceholder("randomEngineStateProducer"), g4SimHits)
+psim = cms.Sequence(psimTask)

DetectorDescription/DDCMS/interface/DDCompactView.h

@@ -0,0 +1,15 @@
+#ifndef DETECTOR_DESCRIPTION_CORE_DD_COMPACT_VIEW_H
+#define DETECTOR_DESCRIPTION_CORE_DD_COMPACT_VIEW_H
+
+class DDCompactView
+{ 
+public:
+
+  DDCompactView(const cms::DDDetector& det)
+    : m_det(det) {}
+
+ private:
+  const cms::DDDetector& m_det;
+};
+
+#endif

DetectorDescription/DDCMS/interface/DDSpecParRegistry.h

@@ -26,6 +26,7 @@ namespace cms {
 
   struct DDSpecParRegistry {
     void filter(DDSpecParRefs&, std::string_view, std::string_view) const;
+    void filter(DDSpecParRefs&, std::string_view) const;
 
     DDSpecParMap specpars;
   };

DetectorDescription/DDCMS/plugins/DDTestSpecParsFilter.cc

@@ -42,21 +42,24 @@ DDTestSpecParsFilter::analyze(const Event&, const EventSetup& iEventSetup)
   LogVerbatim("Geometry") << "DD SpecPar Registry size: " << registry->specpars.size();
 
   DDSpecParRefs myReg;
-  registry->filter(myReg, m_attribute, m_value);
+  if(m_value.empty())
+    registry->filter(myReg, m_attribute);
+  else
+    registry->filter(myReg, m_attribute, m_value);
 
   LogVerbatim("Geometry").log([&myReg](auto& log) {
-      log << "Filtered DD SpecPar Registry size: " << myReg.size();
+      log << "Filtered DD SpecPar Registry size: " << myReg.size() << "\n";
       for(const auto& t: myReg) {
-	log << " = { ";
+	log << "\nRegExps { ";
 	for(const auto& ki : t->paths)
-	  log << ki << ", ";
-	log << " };\n ";
+	  log << ki << " ";
+	log << "};\n ";
 	for(const auto& kl : t->spars) {
-	  log << kl.first << " = { ";
+	  log << kl.first << " =  ";
 	  for(const auto& kil : kl.second) {
-	    log << kil << ", ";
+	    log << kil << " ";
 	  }
-	log << " };\n ";
+	log << "\n ";
 	}
       }
     });

DetectorDescription/DDCMS/src/DDSpecparRegistry.cc

@@ -53,3 +53,22 @@ DDSpecParRegistry::filter(DDSpecParRefs& refs,
     }
   });
 }
+
+void
+DDSpecParRegistry::filter(DDSpecParRefs& refs,
+			  string_view attribute) const {
+
+  bool found(false);
+  for_each(begin(specpars), end(specpars), [&refs, &attribute,
+					    &found](const auto& k) {
+    found = false;
+    for_each(begin(k.second.spars), end(k.second.spars), [&](const auto& l) {
+	if(l.first == attribute) {
+	  found = true;
+	}
+      });
+    if(found) {
+      refs.emplace_back(&k.second);
+    }
+  });
+}