File indexing completed on 2024-04-06 12:01:15
0001 #ifndef CommonTools_UtilAlgos_FwdPtrProducer_h
0002 #define CommonTools_UtilAlgos_FwdPtrProducer_h
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0012 #include "FWCore/Framework/interface/stream/EDProducer.h"
0013 #include "FWCore/Framework/interface/Event.h"
0014 #include "FWCore/ParameterSet/interface/ParameterSet.h"
0015 #include "FWCore/Utilities/interface/InputTag.h"
0016 #include "DataFormats/Common/interface/View.h"
0017 #include "DataFormats/Common/interface/FwdPtr.h"
0018 #include "CommonTools/UtilAlgos/interface/FwdPtrConversionFactory.h"
0019 #include <vector>
0020
0021 namespace edm {
0022
0023 template <class T, class H = FwdPtrFromProductFactory<T> >
0024 class FwdPtrProducer : public edm::stream::EDProducer<> {
0025 public:
0026 explicit FwdPtrProducer(edm::ParameterSet const& params)
0027 : srcToken_(consumes<edm::View<T> >(params.getParameter<edm::InputTag>("src"))) {
0028 produces<std::vector<edm::FwdPtr<T> > >();
0029 }
0030
0031 ~FwdPtrProducer() override {}
0032
0033 void produce(edm::Event& iEvent, const edm::EventSetup& iSetup) override {
0034 edm::Handle<edm::View<T> > hSrc;
0035 iEvent.getByToken(srcToken_, hSrc);
0036
0037 std::unique_ptr<std::vector<edm::FwdPtr<T> > > pOutputFwdPtr(new std::vector<edm::FwdPtr<T> >);
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0039 for (typename edm::View<T>::const_iterator ibegin = hSrc->begin(), iend = hSrc->end(), i = ibegin; i != iend;
0040 ++i) {
0041 H factory;
0042 FwdPtr<T> ptr = factory(*hSrc, i - ibegin);
0043 pOutputFwdPtr->push_back(ptr);
0044 }
0045
0046 iEvent.put(std::move(pOutputFwdPtr));
0047 }
0048
0049 protected:
0050 edm::EDGetTokenT<edm::View<T> > srcToken_;
0051 };
0052 }
0053
0054 #endif