TriggerResultsBasedEventSelector.h

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#ifndef FWCore_Framework_TriggerResultsBasedEventSelector_h
#define FWCore_Framework_TriggerResultsBasedEventSelector_h

// -------------------------------------------------------------------
//
// TriggerResultsBasedEventSelector: This class is used by OutputModule to interact with
// the TriggerResults objects upon which the decision to write out an
// event is made.
//
// -------------------------------------------------------------------
#include <string>
#include <utility>
#include <vector>
#include <map>

#include "FWCore/Framework/interface/EventPrincipal.h"
#include "FWCore/Framework/interface/EventSelector.h"
#include "DataFormats/Common/interface/Handle.h"
#include "FWCore/Utilities/interface/InputTag.h"

namespace edm
{
  class ModuleCallingContext;

  namespace detail
  {
    typedef edm::Handle<edm::TriggerResults> handle_t;

    class NamedEventSelector
    {
    public:
      NamedEventSelector(std::string const& n, EventSelector const& s) :
    inputTag_("TriggerResults", "", n), 
    eventSelector_(s), 
    product_() 
      { }

      void fill(EventPrincipal const& e, ModuleCallingContext const* mcc);

      bool match()
      {
    return eventSelector_.acceptEvent(*product_);
      }

      handle_t product() const
      {
    return product_;
      }

      void clear()
      {
    product_ = handle_t();
      }
      
    private:
      InputTag            inputTag_;
      EventSelector       eventSelector_;
      handle_t            product_;
    };

    class TriggerResultsBasedEventSelector
    {
    public:
      TriggerResultsBasedEventSelector();
      typedef detail::handle_t                    handle_t;
      typedef std::vector<NamedEventSelector>     selectors_t;
      typedef selectors_t::size_type              size_type;
      typedef std::pair<std::string, std::string> parsed_path_spec_t;

      void setupDefault(std::vector<std::string> const& triggernames);
      
      void setup(std::vector<parsed_path_spec_t> const& path_specs,
         std::vector<std::string> const& triggernames,
                 const std::string& process_name);

      bool wantEvent(EventPrincipal const& e, ModuleCallingContext const*);

      // Clear the cache
      void clear();

    private:
      typedef selectors_t::iterator iter;

      // Get all TriggerResults objects for the process names we're
      // interested in.
      size_type fill(EventPrincipal const& ev, ModuleCallingContext const*);
      
      bool        fillDone_;
      size_type   numberFound_;
      selectors_t selectors_;
    };
    
    class  TRBESSentry {
    public:
      TRBESSentry(detail::TriggerResultsBasedEventSelector& prods) : p(prods) {}
      ~TRBESSentry() {
        p.clear();
      }
    private:
      detail::TriggerResultsBasedEventSelector& p;
      
      TRBESSentry(TRBESSentry const&) = delete;
      TRBESSentry& operator=(TRBESSentry const&) = delete;
    };


    bool configureEventSelector(edm::ParameterSet const& iPSet,
                                std::string const& iProcessName,
                                std::vector<std::string> const& iAllTriggerNames,
                                edm::detail::TriggerResultsBasedEventSelector& oSelector);
    ParameterSetID registerProperSelectionInfo(edm::ParameterSet const& iInitial,
                                               std::string const& iLabel,
                                               std::map<std::string, std::vector<std::pair<std::string, int> > > const& outputModulePathPositions,
                                               bool anyProductProduced);

  }
}

#endif