|
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
|
/** \class cand::modules::CandReducer
*
* Given a collectin of candidates, produced a
* collection of LeafCandidas identical to the
* source collection, but removing all daughters
* and all components.
*
* This is ment to produce a "light" collection
* of candiadates just containing kimenatics
* information for very fast analysis purpose
*
* \author Luca Lista, INFN
*
* \version $Revision: 1.3 $
*
* $Id: CandReducer.cc,v 1.3 2009/09/27 22:26:55 hegner Exp $
*
*/
#include "FWCore/Framework/interface/global/EDProducer.h"
#include "FWCore/Utilities/interface/InputTag.h"
#include "DataFormats/Candidate/interface/Candidate.h"
class CandReducer : public edm::global::EDProducer<> {
public:
/// constructor from parameter set
explicit CandReducer(const edm::ParameterSet&);
/// destructor
~CandReducer() override = default;
private:
/// process one evevnt
void produce(edm::StreamID, edm::Event& e, edm::EventSetup const& c) const override;
/// label of source candidate collection
const edm::EDGetTokenT<reco::CandidateView> srcToken_;
};
#include "FWCore/Framework/interface/Event.h"
#include "FWCore/ParameterSet/interface/ParameterSet.h"
#include "DataFormats/Candidate/interface/LeafCandidate.h"
#include "FWCore/Utilities/interface/EDMException.h"
using namespace reco;
using namespace edm;
CandReducer::CandReducer(const edm::ParameterSet& cfg)
: srcToken_(consumes<reco::CandidateView>(cfg.getParameter<edm::InputTag>("src"))) {
produces<CandidateCollection>();
}
void CandReducer::produce(edm::StreamID, edm::Event& evt, edm::EventSetup const&) const {
const Handle<reco::CandidateView> cands = evt.getHandle(srcToken_);
std::unique_ptr<CandidateCollection> comp(new CandidateCollection);
for (reco::CandidateView::const_iterator c = cands->begin(); c != cands->end(); ++c) {
std::unique_ptr<Candidate> cand(new LeafCandidate(*c));
comp->push_back(cand.release());
}
evt.put(std::move(comp));
}
#include "FWCore/Framework/interface/MakerMacros.h"
DEFINE_FWK_MODULE(CandReducer);
|