//_____________________________________________________________________________
//  base class for STNTUPLE data block
// 
//  Author:    Pasha Murat (CDF/FNAL)
//  Date:      Nov 10 2000
//
//  TStnDataBlock's are responsible for memory cleanup, the corresponding
//  branches are created with fAutoDelete = 0;
//  by default data block is filled with the event data in BookStntupleModule,
//  if user initialization has been requested (by setting 
//  fInitializedByUser to 1),
//  BookStntupleModule doesn't fill this block. In this case it is a user
//  responsibility to fill the block
//
//  initialization of the data block with the event data is done either using
//  overloaded protected `fInit' function, or
//_____________________________________________________________________________
#include <iostream>
#include "TClass.h"
#include <Stntuple/obj/TStnDataBlock.hh>
#include <Stntuple/obj/TStnNode.hh>
#include <Stntuple/obj/TStnEvent.hh>

const Float_t TStnDataBlock::kUndefined = 1.e6;

ClassImp(TStnDataBlock)
//_____________________________________________________________________________
TStnDataBlock::TStnDataBlock():
  fCollName("none")
{
  // by default initialization is done by the overloaded function

  fUserInitialization = 0;
  fExternalInit       = 0;
  fResolveLinks       = 0;
  fLinksInitialized   = 0;
  fInitMode           = 0;
  fNode               = 0;
  fEvent              = 0;
  fMessageList        = new TObjArray(10);
  fCurrentEntry       = -1;
  fValid              = 0;
  f_EventNumber       = -1;
  f_RunNumber         = -1;
}


//_____________________________________________________________________________
TStnDataBlock::~TStnDataBlock() {
  fMessageList->Delete();
  delete fMessageList;
}

//_____________________________________________________________________________
Int_t TStnDataBlock::GetEntry(Int_t TreeEntry) {
  // TreeEntry refers to the current entry in the tree, fEntry - in the chain

  int current_entry = fEvent->GetCurrentEntry();
  if (fCurrentEntry == current_entry) return 1;
  fCurrentEntry = current_entry;

  return fNode->GetEntry(TreeEntry);
}

//_____________________________________________________________________________
void TStnDataBlock::SetCollName(const char* Process, 
				const char* Description, 
				const char* CollType) {
  fCollName = Process;
  fCollName += "@";
  fCollName += Description;
  if (CollType) {
    fCollName += ";";
    fCollName += CollType;
  }
}

//_____________________________________________________________________________
void TStnDataBlock::Print(Option_t* option) const {
  std::cout << "--------------------------------------" << std::endl;
  std::cout << "TStnDataBlock Dump for " << fCollName <<std::endl;
  std::cout << "Run="<<f_RunNumber<<"  Event="<<f_EventNumber<<std::endl;
  std::cout << "Links init="<<fLinksInitialized 
	    << "   User init="<< fUserInitialization<<std::endl;
  std::cout << "Current Entry="<<fCurrentEntry 
	    << "Valid" << fValid<<std::endl;

}