IEvtSelector.h

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* (c) Copyright 1998-2025 CERN for the benefit of the LHCb and ATLAS collaborations *
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* This software is distributed under the terms of the Apache version 2 licence,     *
* copied verbatim in the file "LICENSE".                                            *
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#pragma once
 
#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;
};