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Add conversion of CellIDEncoding collection parameter to standalone converter #127

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Merged
tmadlener merged 1 commit into from
Dec 18, 2025
Merged

Add conversion of CellIDEncoding collection parameter to standalone converter #127

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27 changes: 26 additions & 1 deletion standalone/lcio2edm4hep.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -4,10 +4,12 @@
#include <IOIMPL/LCFactory.h>
#include <UTIL/CheckCollections.h>

#include <edm4hep/Constants.h>
#include <edm4hep/utils/ParticleIDUtils.h>

#include "podio/ROOTWriter.h"

#include <array>
#include <cstdlib>
#include <fstream>
#include <iostream>
Expand Down Expand Up @@ -147,6 +149,24 @@ ParsedArgs parseArgs(std::vector<std::string> argv) {
return args;
}

const static std::array<std::tuple<std::string, std::string>, 1> STRING_PARAMS_TO_CONVERT = {
{{EVENT::LCIO::CellIDEncoding, edm4hep::labels::CellIDEncoding}}};

void attachCollectionParamters(podio::Frame& metadata, const EVENT::LCCollection* coll, const std::string& name) {
const auto& collParams = coll->getParameters();
std::vector<std::string> stringKeys;
collParams.getStringKeys(stringKeys);

for (const auto& [lcioParam, edm4hepParam] : STRING_PARAMS_TO_CONVERT) {
if (std::ranges::find(stringKeys, lcioParam) != stringKeys.end()) {
// We copy the full vector because in both cases that is what actually is persisted
std::vector<std::string> vals{};
collParams.getStringVals(lcioParam, vals);
metadata.putParameter(podio::collMetadataParamName(name, edm4hepParam), std::move(vals));
}
}
}

int main(int argc, char* argv[]) {
const auto args = parseArgs({argv, argv + argc});

Expand Down Expand Up @@ -226,10 +246,15 @@ int main(int argc, char* argv[]) {
}

// For the first event we also convert some meta information for the
// ParticleID handling
// ParticleID handling as well as for the collection level parameters
if (i == 0) {
for (const auto& name : *evt->getCollectionNames()) {
auto coll = evt->getCollection(name);
const auto edm4hepName = k4EDM4hep2LcioConv::detail::mapLookupFrom(name, collsToConvert);
if (edm4hepName.has_value()) {
attachCollectionParamters(metadata, coll, edm4hepName.value());
}

if (coll->getTypeName() == "ReconstructedParticle") {
for (const auto& pidInfo : LCIO2EDM4hepConv::getPIDMetaInfo(coll)) {
edm4hep::utils::PIDHandler::setAlgoInfo(metadata, LCIO2EDM4hepConv::getPIDCollName(name, pidInfo.algoName),
Expand Down