RootEvtSelector.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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//====================================================================
//  RootTreeEvtSelector.h
//--------------------------------------------------------------------
//
//  Package    : RootCnv
//
//  Description: The RootEvtSelector component is able
//               to produce a list of event references given a set of "selection
//               criteria".
//
//  Author     : M.Frank
//  Created    : 4/01/99
//
//====================================================================
 
#pragma once
 
// Framework include files
#include <GaudiKernel/IEvtSelector.h>
#include <GaudiKernel/Service.h>
 
/*
 *  Gaudi namespace declaration
 */
namespace Gaudi {
 
  // Forward declarations
  class RootCnvSvc;
 
  class GAUDI_API RootEvtSelector : public extends<Service, IEvtSelector> {
 
    StatusCode error( const std::string& msg ) const;
 
  public:
    using extends::extends;
 
    StatusCode initialize() override;
 
    StatusCode finalize() override;
 
 
    StatusCode createContext( Context*& refpCtxt ) const override;
 
    StatusCode last( Context& refContext ) 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*& ) const override;
 
 
    StatusCode releaseContext( Context*& refCtxt ) const override;
 
    StatusCode resetCriteria( const std::string& cr, Context& c ) const override;
 
  protected:
    // Data Members
    mutable RootCnvSvc* m_dbMgr;
    CLID m_rootCLID = CLID_NULL;
 
    Gaudi::Property<std::string> m_persName{ this, "EvtPersistencySvc", "EventPersistencySvc",
                                             "Name of the persistency service to search for conversion service" };
    Gaudi::Property<std::string> m_dummy{ this, "DbType", "", "dummy property to fake backwards compatibility" };
 
    std::string m_cnvSvcName = "Gaudi::RootCnvSvc/RootCnvSvc";
    std::string m_rootName;
    std::string m_criteria;
  };
} // namespace Gaudi