EventSelector.h

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/***********************************************************************************\
* (c) Copyright 1998-2025 CERN for the benefit of the LHCb and ATLAS collaborations *
*                                                                                   *
* This software is distributed under the terms of the Apache version 2 licence,     *
* copied verbatim in the file "LICENSE".                                            *
*                                                                                   *
* In applying this licence, CERN does not waive the privileges and immunities       *
* granted to it by virtue of its status as an Intergovernmental Organization        *
* or submit itself to any jurisdiction.                                             *
\***********************************************************************************/
#pragma once
 
#include <GaudiKernel/IEvtSelector.h>
#include <GaudiKernel/Service.h>
#include <vector>
 
class IIncidentSvc;
class IAddressCreator;
class IToolSvc;
class EventSelectorDataStream;
class EvtSelectorContext;
class IDataStreamTool;

class EventSelector : public extends<Service, IEvtSelector> {
public:
  typedef std::vector<EventSelectorDataStream*>     Streams;
  typedef std::vector<std::string>                  StreamSpecs;
  typedef std::vector<Gaudi::Property<std::string>> Properties;
 
  long int m_streamID;
 
protected:
  SmartIF<IIncidentSvc> m_incidentSvc = nullptr;
 
  SmartIF<IToolSvc> m_toolSvc = nullptr;
 
  IDataStreamTool* m_streamtool = nullptr;

  bool m_reconfigure = false;
  StreamSpecs m_streamSpecsLast;
  Streams m_streams;
  int m_streamCount = 0;
 
  // Properties
  Gaudi::Property<StreamSpecs> m_streamSpecs{ this, "Input", {}, "input stream specifiers (for job options)" };
  Gaudi::Property<int>         m_firstEvent{ this, "FirstEvent", 0, "first event to be processed" };
  Gaudi::Property<int>         m_evtMax{ this, "EvtMax", INT_MAX, "maximum number of events to be processed" };
  Gaudi::Property<int>         m_evtPrintFrequency{ this, "PrintFreq", 10, "printout frequency" };
  Gaudi::Property<std::string> m_streamManager{ this, "StreamManager", "DataStreamTool", "" };

  virtual void printEvtInfo( const EvtSelectorContext* iter ) const;
 
public:
  StatusCode initialize() override;

  StatusCode finalize() override;

  StatusCode reinitialize() override;


  StatusCode createContext( Context*& refpCtxt ) const override;


  StatusCode next( Context& refCtxt ) const override;


  StatusCode next( Context& refCtxt, int jump ) const override;


  StatusCode previous( Context& refCtxt ) const override;


  StatusCode previous( Context& refCtxt, int jump ) const override;


  StatusCode rewind( Context& refCtxt ) const override;


  StatusCode createAddress( const Context& refCtxt, IOpaqueAddress*& refpAddr ) const override;


  StatusCode releaseContext( Context*& refCtxt ) const override;

  StatusCode resetCriteria( const std::string& cr, Context& c ) const override;

  StatusCode last( Context& c ) const override;

  StatusCode firstOfNextStream( bool shutDown, EvtSelectorContext& it ) const;
  StatusCode lastOfPreviousStream( bool shutDown, EvtSelectorContext& it ) const;

  using extends::extends;
};