EventIterator.h

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//  ============================================================
//
//  EventIterator.h
//  ------------------------------------------------------------
//
//  Package   : EventSelector
//
//  Author    : Markus Frank
//
//  ===========================================================
#ifndef GAUDISVC_EVENTSELECTOR_EVENTITERATOR_H
#define GAUDISVC_EVENTSELECTOR_EVENTITERATOR_H 1

// Include files
#include "GaudiKernel/IEvtSelector.h"
#include "GaudiKernel/IDataStreamTool.h"

class EvtSelectorContext  : public IEvtSelector::Context {
  // Friend declaration
  friend class EventSelector;
  friend class EventCollectionSelector;
private:
  EvtSelectorContext ( const EvtSelectorContext& ) = default;
protected:
  IDataStreamTool::size_type m_streamID = -1;
  long                       m_count = -1;
  long                       m_strCount = -1;
  const IEvtSelector*     m_pSelector = nullptr;
  IEvtSelector::Context*  m_context = nullptr;
  IOpaqueAddress*         m_pAddress = nullptr;
  void set(const IEvtSelector* sel, IDataStreamTool::size_type id, IEvtSelector::Context* it, IOpaqueAddress* pA)    {
    m_pSelector = sel;
    m_context   = it;
    m_streamID  = id;
    m_pAddress  = pA;
    m_strCount  = -1;
  }
  void set(IEvtSelector::Context* it, IOpaqueAddress* pA)    {
    m_context = it;
    m_pAddress = pA;
  }
  void set(IOpaqueAddress* pA)    {
    m_pAddress = pA;
  }
  IEvtSelector::Context* context()  const  {
    return m_context;
  }
  IDataStreamTool::size_type increaseCounters(bool reset=false)   {
    m_count++;
    m_strCount = (reset) ? 0 : m_strCount+1;
    return m_count;
  }
  IDataStreamTool::size_type decreaseCounters(bool reset=false)   {
    m_count++;
    m_strCount = (reset) ? 0 : m_strCount-1;
    return m_count;
  }
public:
  EvtSelectorContext( const IEvtSelector* selector )
  : m_pSelector(selector) { }
  ~EvtSelectorContext() override = default;

  virtual EvtSelectorContext& operator=(const EvtSelectorContext&) = default;
  virtual IDataStreamTool::size_type ID()   const {
    return m_streamID;
  }
  long numEvent()  const    {
    return m_count;
  }
  long numStreamEvent()  const    {
    return m_strCount;
  }
  void* identifier() const override {
    return (void*)m_pSelector;
  }
};
#endif // GAUDISVC_EVENTSELECTOR_EVENTITERATOR_H