TypeLabelInstanceKey.h

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#ifndef gallery_TypeLabelInstanceKey_h
#define gallery_TypeLabelInstanceKey_h

#include "canvas/Utilities/TypeID.h"

#include <string>
#include <tuple>

namespace gallery {

  class TypeLabelInstanceKey {
  public:
    TypeLabelInstanceKey(art::TypeID const& iType,
                         std::string const& iLabel,
                         std::string const& iInstance)
      : type_{iType}, label_{iLabel}, instance_{iInstance}
    {}

    bool
    operator<(TypeLabelInstanceKey const& iRHS) const
    {
      return std::tie(type_, label_, instance_) <
             std::tie(iRHS.type_, iRHS.label_, iRHS.instance_);
    }

    art::TypeID const&
    typeID() const
    {
      return type_;
    }
    std::string const&
    label() const
    {
      return label_;
    }
    std::string const&
    instance() const
    {
      return instance_;
    }

  private:
    art::TypeID type_;
    std::string label_;
    std::string instance_;
  };
} // namespace gallery
#endif /* gallery_TypeLabelInstanceKey_h */

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