MTDParametersFromDD.cc

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#include "Geometry/MTDGeometryBuilder/interface/MTDParametersFromDD.h"
#include "Geometry/MTDCommonData/interface/MTDTopologyMode.h"
#include "CondFormats/GeometryObjects/interface/PMTDParameters.h"
#include "DetectorDescription/Core/interface/DDCompactView.h"
#include "DetectorDescription/Core/interface/DDFilteredView.h"
#include "DetectorDescription/Core/interface/DDVectorGetter.h"
#include "DetectorDescription/Core/interface/DDutils.h"

using namespace MTDTopologyMode;

namespace {
  int getMTDTopologyMode(const char* s, const DDsvalues_type& sv) {
    DDValue val(s);
    if (DDfetch(&sv, val)) {
      const std::vector<std::string>& fvec = val.strings();
      if (fvec.empty()) {
        throw cms::Exception("MTDParametersFromDD") << "Failed to get " << s << " tag.";
      }

      int result(-1);
      MTDTopologyMode::Mode eparser = MTDTopologyMode::MTDStringToEnumParser(fvec[0]);
      result = static_cast<int>(eparser);
      return result;
    } else {
      throw cms::Exception("MTDParametersFromDD") << "Failed to get " << s << " tag.";
    }
  }
}  // namespace

bool MTDParametersFromDD::build(const DDCompactView* cvp, PMTDParameters& ptp) {
  std::array<std::string, 2> mtdSubdet{{"BTL", "ETL"}};
  int subdet(0);
  for (const auto& name : mtdSubdet) {
    if (DDVectorGetter::check(name)) {
      subdet += 1;
      std::vector<int> subdetPars = dbl_to_int(DDVectorGetter::get(name));
      putOne(subdet, subdetPars, ptp);
    }
  }

  ptp.vpars_ = dbl_to_int(DDVectorGetter::get("vPars"));

  std::string attribute = "OnlyForMTDRecNumbering";
  DDSpecificsHasNamedValueFilter filter1{attribute};
  DDFilteredView fv1(*cvp, filter1);
  bool ok = fv1.firstChild();
  if (ok) {
    DDsvalues_type sv(fv1.mergedSpecifics());
    int topoMode = getMTDTopologyMode("TopologyMode", sv);
    ptp.topologyMode_ = topoMode;
  } else {
    throw cms::Exception("MTDParametersFromDD") << "Not found " << attribute.c_str() << " but needed.";
  }

  return true;
}

void MTDParametersFromDD::putOne(int subdet, std::vector<int>& vpars, PMTDParameters& ptp) {
  PMTDParameters::Item item;
  item.id_ = subdet;
  item.vpars_ = vpars;
  ptp.vitems_.emplace_back(item);
}