// @(#)root/hbook:$Name:  $:$Id: THbookBranch.cxx,v 1.6 2002/12/02 18:50:03 rdm Exp $
// Author: Rene Brun   18/02/2002

/*************************************************************************
 * Copyright (C) 1995-2002, Rene Brun and Fons Rademakers.               *
 * All rights reserved.                                                  *
 *                                                                       *
 * For the licensing terms see $ROOTSYS/LICENSE.                         *
 * For the list of contributors see $ROOTSYS/README/CREDITS.             *
 *************************************************************************/

#include "THbookBranch.h"
#include "THbookTree.h"

ClassImp(THbookBranch)


//______________________________________________________________________________
 THbookBranch::THbookBranch(const char *name, void *address, const char *leaflist, Int_t basketsize, Int_t compress)
            :TBranch(name,address,leaflist,basketsize,compress)
{
}


//______________________________________________________________________________
 THbookBranch::~THbookBranch()
{
}


//______________________________________________________________________________
 void THbookBranch::Browse(TBrowser *b)
{
   // Browser interface.
   THbookTree *tree = (THbookTree*)GetTree();
   THbookFile *file = tree->GetHbookFile();
   file->cd();

   TBranch::Browse(b);
}

//______________________________________________________________________________
 Int_t THbookBranch::GetEntry(Int_t entry, Int_t /*getall*/)
{
   THbookTree *tree = (THbookTree*)GetTree();
   THbookFile *file = tree->GetHbookFile();
   if (tree->GetType() == 0) {
      return file->GetEntry(entry,tree->GetID(),0,tree->GetX());
   } else {
      tree->InitBranches(entry);
      return file->GetEntryBranch(entry,tree->GetID());
   }
}

//______________________________________________________________________________
 void THbookBranch::SetAddress(void *add)
{
// Set address of this branch
// See important remark in the header of THbookTree

   TBranch::SetAddress(add);

   if (GetUniqueID() != 0) return; //only for first variable of the block
   THbookTree *tree = (THbookTree*)GetTree();
   THbookFile *file = tree->GetHbookFile();
   if (tree->GetType() != 0) {
      file->SetBranchAddress(tree->GetID(),GetBlockName(),add);
   }
}


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