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00001 #ifndef CommonTools_UtilAlgos_AssociationVector2ValueMap_h
00002 #define CommonTools_UtilAlgos_AssociationVector2ValueMap_h
00003 /* \class AssociationVector2ValueMap
00004  *
00005  * \author Luca Lista, INFN
00006  *
00007  * \version $Id: AssociationVector2ValueMap.h,v 1.2 2010/02/20 20:55:15 wmtan Exp $
00008  */
00009 
00010 #include "DataFormats/Common/interface/AssociationVector.h"
00011 #include "DataFormats/Common/interface/ValueMap.h"
00012 #include "FWCore/Framework/interface/EDProducer.h"
00013 #include "FWCore/Utilities/interface/InputTag.h"
00014 
00015 template<typename KeyRefProd, typename CVal>
00016 class AssociationVector2ValueMap : public edm::EDProducer {
00017  public:
00018   AssociationVector2ValueMap(const edm::ParameterSet&);
00019  private:
00020   typedef edm::AssociationVector<KeyRefProd, CVal> av_t;
00021   typedef typename CVal::value_type value_t;
00022   typedef edm::ValueMap<value_t> vm_t;
00023   typedef typename av_t::CKey collection_t;
00024   void produce(edm::Event&, const edm::EventSetup&);
00025   edm::InputTag av_;
00026 };
00027 
00028 #include "FWCore/ParameterSet/interface/ParameterSet.h"
00029 #include "FWCore/Framework/interface/Event.h"
00030 #include "DataFormats/Common/interface/Handle.h"
00031 #include "CommonTools/UtilAlgos/interface/ParameterAdapter.h"
00032 #include "DataFormats/Common/interface/CloneTrait.h"
00033 
00034 template<typename KeyRefProd, typename CVal>
00035 AssociationVector2ValueMap<KeyRefProd, CVal>::AssociationVector2ValueMap(const edm::ParameterSet& cfg) :
00036   av_(cfg.template getParameter<edm::InputTag>("src")) {
00037   produces<vm_t>();
00038 }
00039 
00040 template<typename KeyRefProd, typename CVal>
00041 void AssociationVector2ValueMap<KeyRefProd, CVal>::produce(edm::Event& evt, const edm::EventSetup&) {
00042   using namespace edm;
00043   using namespace std;
00044   Handle<av_t> av;
00045   evt.getByLabel(av_, av);
00046 
00047   auto_ptr<vm_t> vm(new vm_t);  
00048   typename vm_t::Filler filler(*vm);
00049   filler.fill();
00050   size_t size = av->size();
00051   vector<value_t> values;
00052   values.reserve(size);
00053   for(typename av_t::const_iterator i = av->begin(); i != av->end(); ++i) {
00054     values.push_back(i->second);
00055   }
00056   filler.insert(av->keyProduct(), values.begin(), values.end());
00057   evt.put(vm);
00058 }
00059 
00060 #endif
/data/refman/pasoursint/CMSSW_4_1_8_patch9/src/CommonTools/UtilAlgos/interface/AssociationVector2ValueMap.h
