History.h

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#ifndef canvas_Persistency_Provenance_History_h
#define canvas_Persistency_Provenance_History_h
// vim: set sw=2 expandtab :

//
// Class History represents the processing history of a single Event.
// It includes ordered sequences of elements, each of which contains
// information about a specific 'process' through which the Event has
// passed, with earlier processes at the beginning of the sequence.
//

#include "canvas/Persistency/Provenance/EventSelectionID.h"
#include "canvas/Persistency/Provenance/ProcessHistoryID.h"

namespace art {

  class History {
  public:
    using size_type = std::size_t;

    size_type size() const noexcept;

    void addEventSelectionEntry(EventSelectionID const& eventSelection);

    EventSelectionID const& getEventSelectionID(size_type i) const noexcept;
    EventSelectionIDVector const& eventSelectionIDs() const noexcept;
    ProcessHistoryID const& processHistoryID() const noexcept;

    void setProcessHistoryID(ProcessHistoryID const& phid);

  private:
    EventSelectionIDVector eventSelections_;
    mutable ProcessHistoryID processHistoryID_;
  };

} // namespace art

#endif /* canvas_Persistency_Provenance_History_h */

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