//
//  $Id: BrEventManager.cxx,v 1.2 2001/10/08 11:27:12 cholm Exp $
//

#include <cstdio>
#include <iostream.h>
#include <iomanip.h>

//
// ROOT classes

//
// Brat classes

#include <BrEventManager.h>
#include <BrEvent.h>
 
ClassImp(BrEventManager);


//////////////////////////////////////////////////////////////////
//
//  BrEventManager
//
//  This manager class will assits user module is retrieving general 
//  event information regardless if a module has access to the EventHeader.
//  
//
//  Sample code:
//
//  The application can load the Manager and keep a global pointer
//  accesible via a Brat common application file. It is in fact 
//  implemented via a Singleton mechanism. This enables us to use both
//  the global mechanism as well as the instantons.
//
//  Main application will have
//  ---------------------------
//  BrEventManager *gEventMgr =
//    BrEventManager::Instance();
//
//
//
//  The application that reads the Event from DISK EVB etc
//  should call the event method for the EventManager i.e.
//	  InputFile->Event(event);
//	  if(InputFile->Eof()){
//	    cout << "End Of Data" << endl;
//	    break;
//	  }
//	  gEventMgr->Event(event);
//
//  
//  The user module should have (either in the Named Constructor 
//  or in the Init() method.
//  ------------------------------------
//  BrCalibrationManager *gParamDb =
//    BrCalibrationManager::Instance();
//
//
//  At the time of Event the user code could access information e.g.
//  as such
//  BrEventManager *gEventMgr =
//    BrEventManager::Instance();
//
//  if(gEventMgr->IsEvent()){
//    ....
//  }
//  int evno = gEventMgr->Event();
//  if(gEventMgr->TriggerOn(6)){
//   // collisions event
//   ...
//  }
//
// See also the TestEventManager.cxx in the brat/test directory  
//____________________________________________________
//
// Static instance of  
// instanton.
// 
BrEventManager* BrEventManager::fInstance=0;

//____________________________________________________
//
 BrEventManager::BrEventManager(){
  fState = INIT;
  
}

//____________________________________________________ 
 BrEventManager* BrEventManager::Instance(){
  if( fInstance == 0)
    fInstance = new BrEventManager;
  return fInstance;
}

//__________________________________________________
BrEventManager::~BrEventManager(){
}



 void BrEventManager::Event(const BrEvent* event)
  //
  // Extract Event runnumber from current event
  // and store in local variable.
  // This allows multiple modules to ask for
  // current values.
  //
{

  if (!event) {
    fState = FAILED; 
    return;
  }

  fRunNumber    = event->GetRunNumber();
  fEventNumber  = event->GetEventNumber();
  fEventType    = event->GetEventType();
  fTriggerType  = event->GetTriggerMask();
  fTime         = event->GetTime();
  fTriggerWord1 = event->GetEventHeader()->TriggerWord(1);
  fTriggerWord2 = event->GetEventHeader()->TriggerWord(2);
  fState = READ;
}


//////////////////////////////////////////////////////////////
//
// $Log: BrEventManager.cxx,v $
// Revision 1.2  2001/10/08 11:27:12  cholm
// Changed to use new DB access classes
//
// Revision 1.1.1.1  2001/06/21 14:55:15  hagel
// Initial revision of brat2
//
// Revision 1.2  2000/07/20 16:14:12  videbaek
// Fixed problme in IsEventSync and IsEvent.
// Added Finish method in Module container.
// Moved comments CVSlog
//
//

Copyright ; 2002 BRAHMS Collaboration <brahmlib@rcf.rhic.bnl.gov>
Last Update on by

Validate HTML
Validate CSS