UtilAlgos/interface/AssociationVector2ValueMap.h

0001 #ifndef CommonTools_UtilAlgos_AssociationVector2ValueMap_h
0002 #define CommonTools_UtilAlgos_AssociationVector2ValueMap_h
0003 /* \class AssociationVector2ValueMap
0004  *
0005  * \author Luca Lista, INFN
0006  *
0007  * \version $Id: AssociationVector2ValueMap.h,v 1.2 2010/02/20 20:55:15 wmtan Exp $
0008  */
0009
0010 #include "DataFormats/Common/interface/AssociationVector.h"
0011 #include "DataFormats/Common/interface/ValueMap.h"
0012 #include "FWCore/Framework/interface/global/EDProducer.h"
0013 #include "FWCore/Utilities/interface/InputTag.h"
0014
0015 template <typename KeyRefProd, typename CVal>
0016 class AssociationVector2ValueMap : public edm::global::EDProducer<> {
0017 public:
0018   AssociationVector2ValueMap(const edm::ParameterSet&);
0019
0020 private:
0021   typedef edm::AssociationVector<KeyRefProd, CVal> av_t;
0022   typedef typename CVal::value_type value_t;
0023   typedef edm::ValueMap<value_t> vm_t;
0024   typedef typename av_t::CKey collection_t;
0025   void produce(edm::StreamID, edm::Event&, const edm::EventSetup&) const override;
0026   edm::EDGetTokenT<av_t> av_;
0027 };
0028
0029 #include "FWCore/ParameterSet/interface/ParameterSet.h"
0030 #include "FWCore/Framework/interface/Event.h"
0031 #include "DataFormats/Common/interface/Handle.h"
0032 #include "CommonTools/UtilAlgos/interface/ParameterAdapter.h"
0033 #include "DataFormats/Common/interface/CloneTrait.h"
0034
0035 template <typename KeyRefProd, typename CVal>
0036 AssociationVector2ValueMap<KeyRefProd, CVal>::AssociationVector2ValueMap(const edm::ParameterSet& cfg)
0037     : av_(consumes<av_t>(cfg.template getParameter<edm::InputTag>("src"))) {
0038   produces<vm_t>();
0039 }
0040
0041 template <typename KeyRefProd, typename CVal>
0042 void AssociationVector2ValueMap<KeyRefProd, CVal>::produce(edm::StreamID,
0043                                                            edm::Event& evt,
0044                                                            const edm::EventSetup&) const {
0045   using namespace edm;
0046   using namespace std;
0047   Handle<av_t> av;
0048   evt.getByToken(av_, av);
0049
0050   unique_ptr<vm_t> vm(new vm_t);
0051   typename vm_t::Filler filler(*vm);
0052   filler.fill();
0053   size_t size = av->size();
0054   vector<value_t> values;
0055   values.reserve(size);
0056   for (typename av_t::const_iterator i = av->begin(); i != av->end(); ++i) {
0057     values.push_back(i->second);
0058   }
0059   filler.insert(av->keyProduct(), values.begin(), values.end());
0060   evt.put(std::move(vm));
0061 }
0062
0063 #endif