DemoInputModule.h

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#ifndef DEMOINPUTMODULE_H
#define DEMOINPUTMODULE_H

// DemoInputModule
//
// Package: Per (Persistency) Demo class.
//
// S. Kasahara  04/2001
//
// Purpose: Simple DemoInputModule class to show use of Persistency
//          input streams.  This is for use with the DemoInput.cc
//          program that comes with the Persistency package.
//

#include <iosfwd> // ostream forward decl.
#include "Persistency/PerInputStreamManager.h"

class MomNavigator;
class DemoInputModule;

std::ostream& operator<< (std::ostream& ms, const DemoInputModule& dm);

class DemoInputModule {

public:

  // Constructors and destructors
  DemoInputModule() {}
  virtual ~DemoInputModule() {}

  // State testing methods
  bool IsBegin() const;
  bool IsEnd() const;
  std::ostream& Print(std::ostream& ms) const;

  // State changing methods
  void BeginJob();
  void EndJob();
  bool BeginFile(std::string streamname,
                 std::string fullfilepathname,
                 Per::EAccessMode = Per::kRead);
  void EndFile(std::string streamname="*");
  
  Int_t Next(MomNavigator *mom, Int_t advanceby=1);
  Int_t Previous(MomNavigator *mom, Int_t rewindby=1);

private:

  PerInputStreamManager fInputStreamManager; // manager of input streams

};

#endif // DEMOINPUMODULE_H

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