/** \class AlignmentMuonSelectorModule
 *
 * selects a subset of a muon collection and clones
 * Track, TrackExtra parts and RecHits collection
 * for SA, GB and Tracker Only options
 *
 * \author Javier Fernandez, IFCA
 *
 * \version $Revision: 1.3 $
 *
 * $Id: AlignmentMuonSelectorModule.cc,v 1.3 2008/02/04 19:32:26 flucke Exp $
 *
 */

#include "FWCore/Framework/interface/ConsumesCollector.h"
#include "FWCore/Framework/interface/MakerMacros.h"
#include "CommonTools/UtilAlgos/interface/ObjectSelector.h"
#include "Alignment/CommonAlignmentProducer/interface/AlignmentMuonSelector.h"
#include "DataFormats/MuonReco/interface/MuonFwd.h"

// the following include is necessary to clone all track branches
// including recoTrackExtras and TrackingRecHitsOwned.
// if you remove it the code will compile, but the cloned
// tracks have only the recoMuons branch!

struct MuonConfigSelector {
  typedef std::vector<const reco::Muon *> container;
  typedef container::const_iterator const_iterator;
  typedef reco::MuonCollection collection;

  MuonConfigSelector(const edm::ParameterSet &cfg, edm::ConsumesCollector &&iC) : theSelector(cfg) {}

  const_iterator begin() const { return selected_.begin(); }
  const_iterator end() const { return selected_.end(); }
  size_t size() const { return selected_.size(); }

  void select(const edm::Handle<reco::MuonCollection> &c, const edm::Event &evt, const edm::EventSetup & /* dummy*/) {
    all_.clear();
    selected_.clear();
    for (collection::const_iterator i = c.product()->begin(), iE = c.product()->end(); i != iE; ++i) {
      all_.push_back(&*i);
    }
    selected_ = theSelector.select(all_, evt);  // might add dummy
  }

private:
  container all_, selected_;
  AlignmentMuonSelector theSelector;
};

typedef ObjectSelector<MuonConfigSelector> AlignmentMuonSelectorModule;

DEFINE_FWK_MODULE(AlignmentMuonSelectorModule);
