AssnProducer2_module.cc

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////////////////////////////////////////////////////////////////////////
// Class:       AssnProducer2
// Plugin Type: producer (art v2_05_00)
// File:        AssnProducer2_module.cc
//
// Generated at Tue Dec 13 14:04:05 2016 by Saba Sehrish using cetskelgen
// from cetlib version v1_21_00.
////////////////////////////////////////////////////////////////////////

#include "art/Framework/Core/EDProducer.h"
#include "art/Framework/Core/ModuleMacros.h"
#include "art/Framework/Principal/Event.h"
#include "art/Framework/Principal/Handle.h"
#include "fhiclcpp/ParameterSet.h"
#include "art/Persistency/Common/PtrMaker.h"
#include "canvas/Persistency/Common/Assns.h"

namespace lartest {
   class AssnProducer2;
}

using lartest::AssnProducer2;

class lartest::AssnProducer2 : public art::EDProducer {
public:
  explicit AssnProducer2(fhicl::ParameterSet const & p);
  // The compiler-generated destructor is fine for non-base
  // classes without bare pointers or other resource use.

  // Plugins should not be copied or assigned.
  AssnProducer2(AssnProducer2 const &) = delete;
  AssnProducer2(AssnProducer2 &&) = delete;
  AssnProducer2 & operator = (AssnProducer2 const &) = delete;
  AssnProducer2 & operator = (AssnProducer2 &&) = delete;

  // Required functions.
  void produce(art::Event & e) override;

private:
std::string fInputLabel;
  // Declare member data here.

};


AssnProducer2::AssnProducer2(fhicl::ParameterSet const & p)
  : EDProducer{p}
  , fInputLabel(p.get<std::string>("input_label"))
{
   produces<art::Assns<int, std::string>>();
}

void AssnProducer2::produce(art::Event & e)
{
   art::Handle<std::vector<int>> ih;
   e.getByLabel(fInputLabel, ih);
   art::Handle<std::vector<std::string>> sh;
   e.getByLabel(fInputLabel, sh);

   art::PtrMaker<int> make_intptr(e, ih.id());
   art::PtrMaker<std::string> make_strptr(e, sh.id());

   auto assns = std::make_unique<art::Assns<int, std::string>>();
   for (size_t i=0; i < 3; ++i) {
      auto p1 = make_intptr(i);
      for(size_t j=0; j < 2; ++j) {
         auto p2 = make_strptr(i*2+j);
         assns -> addSingle(p1, p2);
      }
   }
   e.put(std::move(assns));
}

DEFINE_ART_MODULE(AssnProducer2)