IEvtSelector.h

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/***********************************************************************************\
* (c) Copyright 1998-2019 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".                                            *
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* granted to it by virtue of its status as an Intergovernmental Organization        *
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#ifndef GAUDIKERNEL_IEVTSELECTOR_H
#define GAUDIKERNEL_IEVTSELECTOR_H 1

// Include files
#include "GaudiKernel/IInterface.h"
#include "GaudiKernel/IOpaqueAddress.h"
#include "GaudiKernel/StatusCode.h"
#include <string>

class GAUDI_API IEvtSelector : virtual public IInterface {
public:
  DeclareInterfaceID( IEvtSelector, 2, 0 );

  class Context {
  public:
    virtual ~Context()               = default;
    virtual void* identifier() const = 0;
  };

  virtual StatusCode createContext( Context*& c ) const = 0;

  virtual StatusCode next( Context& c ) const = 0;

  virtual StatusCode next( Context& c, int jump ) const = 0;

  virtual StatusCode previous( Context& c ) const = 0;

  virtual StatusCode previous( Context& c, int jump ) const = 0;

  virtual StatusCode last( Context& refContext ) const = 0;

  virtual StatusCode rewind( Context& c ) const = 0;

  virtual StatusCode createAddress( const Context& c, IOpaqueAddress*& iop ) const = 0;

  virtual StatusCode releaseContext( Context*& ) const = 0;

  virtual StatusCode resetCriteria( const std::string& cr, Context& c ) const = 0;
};

#endif // GAUDIKERNEL_IEVTSELECTOR_H