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#include "DataFormats/Common/interface/Handle.h"
#include "DataFormats/TestObjects/interface/Thing.h"
#include "DataFormats/TestObjects/interface/ThingCollection.h"
#include "DataFormats/TestObjects/interface/TrackOfThings.h"
#include "FWCore/Framework/interface/ConsumesCollector.h"
#include "FWCore/Framework/interface/Event.h"
#include "FWCore/Framework/interface/EventSetup.h"
#include "FWCore/Framework/interface/MakerMacros.h"
#include "FWCore/Framework/interface/stream/ThinningProducer.h"
#include "FWCore/ParameterSet/interface/ParameterSet.h"
#include "FWCore/Utilities/interface/EDGetToken.h"
#include "FWCore/Utilities/interface/Exception.h"
#include "FWCore/Utilities/interface/InputTag.h"
#include "FWCore/Framework/interface/ESHandle.h"
#include "WhatsIt.h"
#include "GadgetRcd.h"
#include "FWCore/ParameterSet/interface/ParameterSetDescription.h"
#include <set>
#include <string>
namespace edmtest {
class SlimmingThingSelector {
public:
SlimmingThingSelector(edm::ParameterSet const& pset, edm::ConsumesCollector&& cc);
static void fillPSetDescription(edm::ParameterSetDescription& desc);
void preChoose(edm::Handle<edmtest::ThingCollection> tc, edm::Event const& event, edm::EventSetup const& es);
std::optional<edmtest::Thing> choose(unsigned int iIndex, edmtest::Thing const& iItem) const;
void reset() { keysToSave_.clear(); }
private:
edm::EDGetTokenT<TrackOfThingsCollection> const trackToken_;
edm::ESGetToken<edmtest::WhatsIt, GadgetRcd> const setupToken_;
std::set<unsigned int> keysToSave_;
unsigned int const offsetToThinnedKey_;
unsigned int const offsetToValue_;
unsigned int const expectedCollectionSize_;
int const slimmedValueFactor_;
};
SlimmingThingSelector::SlimmingThingSelector(edm::ParameterSet const& pset, edm::ConsumesCollector&& cc)
: trackToken_(cc.consumes<TrackOfThingsCollection>(pset.getParameter<edm::InputTag>("trackTag"))),
setupToken_(cc.esConsumes<edmtest::WhatsIt, GadgetRcd>()),
offsetToThinnedKey_(pset.getParameter<unsigned int>("offsetToThinnedKey")),
offsetToValue_(pset.getParameter<unsigned int>("offsetToValue")),
expectedCollectionSize_(pset.getParameter<unsigned int>("expectedCollectionSize")),
slimmedValueFactor_(pset.getParameter<int>("slimmedValueFactor")) {}
void SlimmingThingSelector::fillPSetDescription(edm::ParameterSetDescription& desc) {
desc.add<edm::InputTag>("trackTag");
desc.add<unsigned int>("offsetToThinnedKey");
desc.add<unsigned int>("offsetToValue", 0);
desc.add<unsigned int>("expectedCollectionSize");
desc.add<int>("slimmedValueFactor", 1);
}
void SlimmingThingSelector::preChoose(edm::Handle<edmtest::ThingCollection> tc,
edm::Event const& event,
edm::EventSetup const& es) {
for (auto const& track : event.get(trackToken_)) {
keysToSave_.insert(track.ref1.key() - offsetToThinnedKey_);
keysToSave_.insert(track.ref2.key() - offsetToThinnedKey_);
keysToSave_.insert(track.ptr1.key() - offsetToThinnedKey_);
keysToSave_.insert(track.ptr2.key() - offsetToThinnedKey_);
}
// Just checking to see if the collection got passed in. Not really using it for anything.
if (tc->size() != expectedCollectionSize_) {
throw cms::Exception("TestFailure") << "SlimmingThingSelector::preChoose, collection size = " << tc->size()
<< " expected size = " << expectedCollectionSize_;
}
// Just checking to see the EventSetup works from here. Not really using it for anything.
edm::ESHandle<edmtest::WhatsIt> pSetup = es.getHandle(setupToken_);
pSetup.isValid();
}
std::optional<edmtest::Thing> SlimmingThingSelector::choose(unsigned int iIndex, edmtest::Thing const& iItem) const {
// Just checking to see the element in the container got passed in OK. Not really using it.
// Just using %10 because it coincidentally works with the arbitrary numbers I picked, no meaning really.
auto const expected = slimmedValueFactor_ * (iIndex + offsetToValue_);
if (static_cast<unsigned>(iItem.a % 10) != static_cast<unsigned>(expected % 10)) {
throw cms::Exception("TestFailure") << "SlimmingThingSelector::choose, item content = " << iItem.a
<< " index = " << iIndex << " expected " << expected;
}
// Save the Things referenced by the Tracks
if (keysToSave_.find(iIndex) == keysToSave_.end())
return {};
auto copy = iItem;
copy.a *= 10;
return copy;
}
} // namespace edmtest
typedef edm::ThinningProducer<edmtest::ThingCollection, edmtest::SlimmingThingSelector> SlimmingThingProducer;
DEFINE_FWK_MODULE(SlimmingThingProducer);
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