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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".                                            *
 *                                                                                   *
 * 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.                                             *
 \***********************************************************************************/
 //====================================================================
 //  EventSelectorDataStream.h
 //--------------------------------------------------------------------
 //
 //  Package    : EventSelectorDataStream  (LHCb Event Selector Package)
 //
 //  Author     : M.Frank
 //      Created    : 4/10/00
 //  Changes    : R. Lambert 2009-09-04
 //
 //====================================================================
 #ifndef GAUDIKERNEL_EVENTSELECTORDATASTREAM_H
 #define GAUDIKERNEL_EVENTSELECTORDATASTREAM_H 1
 
 // Include files
 #include "GaudiKernel/IEvtSelector.h"
 #include <Gaudi/Property.h>
 
 // STL include files
 #include <iostream>
 #include <vector>
 
 // Forward declarations
 class MsgStream;
 class ISvcLocator;
 class EventSelectorDataStream;
 
 /** Definition of class EventSelectorDataStream
 
     Small class which eases the management of multiple
     input streams for the event selector.
 
     History:
     +---------+----------------------------------------------+------------+
     |    Date |                 Comment                      |    Who     |
     +---------+----------------------------------------------+------------+
     | 3/10/00 | Initial version                              | M.Frank    |
     +---------+----------------------------------------------+------------+
     | 4/09/09 | Added m_dbName and dbName()                  | R. Lambert |
     +---------+----------------------------------------------+------------+
    @author Markus Frank
    @author R. Lambert
    @version 1.0
 */
 class GAUDI_API EventSelectorDataStream : public implements<IInterface> {
   /// Output friend for MsgStream
   friend MsgStream& operator<<( MsgStream& s, const EventSelectorDataStream& obj );
   /// Output friend for standard I/O
   friend std::ostream& operator<<( std::ostream& s, const EventSelectorDataStream& obj );
 
 public:
   typedef std::vector<Gaudi::Property<std::string>> Properties;
 
 protected:
   /// Name
   std::string m_name;
   /// Definition string
   std::string m_definition;
   /// Criteria
   std::string m_criteria;
   /// String with name of the db as parsed
   std::string m_dbName;
   /// Event selector type
   std::string m_selectorType;
   /// Pointer to valid selector
   SmartIF<IEvtSelector> m_pSelector;
   /// Reference to service locator
   ISvcLocator* m_pSvcLocator;
   /// Properties vector
   Properties m_properties;
   /// Initialization state
   bool m_initialized = false;
   /// Standard Destructor
   virtual ~EventSelectorDataStream() = default;
 
 public:
   /// Standard Constructor
   EventSelectorDataStream( std::string nam, std::string def, ISvcLocator* svcloc );
   /// Attach event selector object
   virtual void setSelector( IEvtSelector* pSelector );
   /// Parse input criteria
   virtual StatusCode initialize();
   /// Finalize stream and release resources
   virtual StatusCode finalize();
   /// Allow access to individual properties by name
   Gaudi::Property<std::string>* property( const std::string& nam );
   /// Allow access to individual properties by name (CONST)
   const Gaudi::Property<std::string>* property( const std::string& nam ) const;
   /// Access properties
   const Properties& properties() { return m_properties; }
   /// Retrieve stream name
   const std::string& name() const { return m_name; }
   /// Retrieve stream criteria
   const std::string& criteria() const { return m_criteria; }
   /// Retrieve stream dbName
   const std::string& dbName() const { return m_dbName; }
   /// Retrieve event selector type
   const std::string& selectorType() const { return m_selectorType; }
   /// Retrieve definition string
   const std::string& definition() const { return m_definition; }
   /// Retrieve event selector object
   IEvtSelector* selector() const { return m_pSelector.get(); }
   /// Check initialization status
   bool isInitialized() const { return m_initialized; }
 };
 
 /// Output friend for MsgStream
 GAUDI_API MsgStream& operator<<( MsgStream& s, const EventSelectorDataStream& obj );
 /// Output friend for standard I/O
 GAUDI_API std::ostream& operator<<( std::ostream& s, const EventSelectorDataStream& obj );
 
 #endif // GAUDIKERNEL_EVENTSELECTORDATASTREAM_H

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