Event/RootCnvSvc/include/RootCnvSvc/RootEvtSelector.h

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#ifndef ROOTEVTSELECTOR_H
#define ROOTEVTSELECTOR_H 1
 
#include "GaudiKernel/IEvtSelector.h"
#include "GaudiKernel/ISvcLocator.h"
#include "GaudiKernel/Service.h"
 
#include "TagFilterSvc/ITagFilterSvc.h"
 
class IAddressCreator;
class IDataProviderSvc;
class RootInterface;
class RootEventContext;
// class TagFilterSvc;
 
static const InterfaceID IID_IRootEvtSelector( "IRootEvtSelector", 1, 0 );
 
/** @class RootEvtSelector
 * @brief RootEvtSelector performs the function of controlling the
 * ApplicationMgr loop.
 *
 * Adapted to RootCnvSvc from GlastSvc/EventSelector.
 * The input property can now be set either to NONE or to ROOT.
 * If it is NONE, the loop
 * will run until it hits EvtMax. A new class variable was added :m_evtMax
 * which is a local copy of the AppMgrs property.
 *
 * $Header: /bes/bes/BossCvs/Event/RootCnvSvc/RootCnvSvc/RootEvtSelector.h,v 1.17 2022/01/24
 * 04:07:17 maqm Exp $
 */
class GAUDI_API RootEvtSelector : public extends<Service, IEvtSelector>,
                                  virtual public IProperty {
public:
  // constructor and destructor
  RootEvtSelector( const std::string& name, ISvcLocator* svcloc );
  ~RootEvtSelector();
 
  // IEvtSelector implementation
  virtual StatusCode initialize();
 
  // Implementation of the IEvtSelector interface methods.
  virtual StatusCode createContext( Context*& it ) const;
  StatusCode         next() const;
  virtual StatusCode next( Context& it ) const;
  virtual StatusCode next( Context& it, int jump ) const;
  virtual StatusCode previous( Context& it ) const;
  virtual StatusCode previous( Context& it, int jump ) const;
 
  virtual StatusCode last( Context& it ) const;
  virtual StatusCode rewind( Context& it ) const;
 
  virtual StatusCode createAddress( const Context& it, IOpaqueAddress*& iop ) const;
  virtual StatusCode releaseContext( Context*& it ) const;
  virtual StatusCode resetCriteria( const std::string& criteria, Context& context ) const;
 
  virtual StatusCode setCriteria( const std::string& criteria );
 
  // IInterface implementation
  virtual StatusCode queryInterface( const InterfaceID& riid, void** ppvInterface );
 
  // int IEvtSelector::getrecId();
  int getRecId() const { return ( *m_recId ); }
 
  void getEntryFromTag() const;
 
private:
  enum CriteriaType {
    ROOT, // When the input is a ROOT file
    NONE  // When there is no input
  };
 
  // Used internally to get the MaxEvent from the ApplicationMgr
  StatusCode getMaxEvent();
 
  RootEventContext* p_beginContext;
  RootEventContext* p_endContext;
 
  std::string    m_criteria;
  StringProperty m_jobInput;
  CriteriaType   m_criteriaType;
 
  // pointer to RootInterface
  RootInterface* m_rootInterface;
 
  // pointer to AddressCreator
  IAddressCreator* m_addrCreator;
 
  // CLID of root basic object
  CLID m_rootCLID;
 
  /// max nr of events to be treated
  int m_evtMax;
 
  /// counts number of event
  int* m_recId;
 
  ITagFilterSvc* m_tagFilterSvc;
};
 
#endif // RootEvtSelector_H