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#ifndef FWCore_Common_TriggerResultsByName_h
#define FWCore_Common_TriggerResultsByName_h
// -*- C++ -*-
//
// Package:     FWCore/Common
// Class  :     TriggerResultsByName
// 
//
// Original Author:  W. David Dagenhart
//         Created:  11 December 2009
//

#include "DataFormats/Provenance/interface/ParameterSetID.h"
#include "DataFormats/Common/interface/HLTenums.h"

#include <string>
#include <vector>

namespace edm {

  class TriggerResults;
  class TriggerNames;
  class HLTPathStatus;

  class TriggerResultsByName {

  public:

    TriggerResultsByName(TriggerResults const* triggerResults,
                         TriggerNames const* triggerNames);

    bool isValid() const;

    ParameterSetID const& parameterSetID() const;

    // Was at least one path run?
    bool wasrun() const;

    // Has at least one path accepted the event?
    bool accept() const;

    // Has any path encountered an error (exception)
    bool  error() const;

    HLTPathStatus const& at(std::string const& pathName) const;
    HLTPathStatus const& at(unsigned i) const;

    HLTPathStatus const& operator[](std::string const& pathName) const;
    HLTPathStatus const& operator[](unsigned i) const;

    // Was ith path run?
    bool wasrun(std::string const& pathName) const;
    bool wasrun(unsigned i) const;

    // Has ith path accepted the event
    bool accept(std::string const& pathName) const;
    bool accept(unsigned i) const;

    // Has ith path encountered an error (exception)?
    bool error(std::string const& pathName) const;
    bool error(unsigned i) const;

    // Get status of ith path
    hlt::HLTState state(std::string const& pathName) const;
    hlt::HLTState state(unsigned i) const;

    // Get index (slot position) of module giving the decision of the ith path
    unsigned index(std::string const& pathName) const;
    unsigned index(unsigned i) const;

    std::vector<std::string> const& triggerNames() const;

    // Throws if the number is out of range.
    std::string const& triggerName(unsigned i) const;

    // If the input name is not known, this returns a value
    // equal to the size.
    unsigned triggerIndex(std::string const& pathName) const;

    // The number of trigger names.
    std::vector<std::string>::size_type size() const;

  private:

    unsigned getAndCheckIndex(std::string const& pathName) const;

    void throwTriggerResultsMissing() const;
    void throwTriggerNamesMissing() const;

    TriggerResults const* triggerResults_;
    TriggerNames const* triggerNames_;
  };
}
#endif