G4VPersistencyManager.hh

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#ifndef G4VPersistencyManager_h
#define G4VPersistencyManager_h 1
 
#include "globals.hh"
 
class G4Event;
class G4Run;
class G4VPhysicalVolume;
 
// class description:
//
//  This is an abstract base class for persistency management. The user's
// concrete class derived from this class must be a singleton. The user
// must construct the object of his/her concrete persistency manager at
// his/her main().
//  The virtual methods of Store() and Retreive() will be invoked from
// G4RunManager if the persistency manager exists.
//  Even if the user does not use any ODBMS, the user can use this class
// especially for Store() methods. Writing an ASCII file for storing
// event information can be delegated to this class, for example.
//
 
class G4VPersistencyManager
{
 public:  // with description
  static G4VPersistencyManager* GetPersistencyManager();
  //  Static method to return the pointer to the singleton object.
  // Note that this method does NOT create the singleton object.
 
 protected:
  G4VPersistencyManager();
 
 public:
  virtual ~G4VPersistencyManager();
 
 private:
  static G4ThreadLocal G4VPersistencyManager* fPersistencyManager;
 
 public:  // with description
  virtual G4bool Store(const G4Event* anEvent)            = 0;
  virtual G4bool Store(const G4Run* aRun)                 = 0;
  virtual G4bool Store(const G4VPhysicalVolume* theWorld) = 0;
  //  Stores G4Event, G4Run, and geometry tree characterized by the world
  //  volume.
 
  virtual G4bool Retrieve(G4Event*& anEvent)            = 0;
  virtual G4bool Retrieve(G4Run*& aRun)                 = 0;
  virtual G4bool Retrieve(G4VPhysicalVolume*& theWorld) = 0;
  //  Restore G4Event, G4Run, and geometry tree characterized by the world
  //  volume.
};
 
#endif