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THbookBranch.cxx
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1// @(#)root/hbook:$Id$
2// Author: Rene Brun 18/02/2002
3
4/*************************************************************************
5 * Copyright (C) 1995-2002, Rene Brun and Fons Rademakers. *
6 * All rights reserved. *
7 * *
8 * For the licensing terms see $ROOTSYS/LICENSE. *
9 * For the list of contributors see $ROOTSYS/README/CREDITS. *
10 *************************************************************************/
11
12#include "THbookBranch.h"
13#include "THbookTree.h"
14
16
17////////////////////////////////////////////////////////////////////////////////
18/** \class THbookBranch
19 \ingroup Hist
20 \brief HBOOK Branch
21*/
22
23////////////////////////////////////////////////////////////////////////////////
24
25THbookBranch::THbookBranch(TTree *tree, const char *name, void *address, const char *leaflist, Int_t basketsize, Int_t compress)
26 :TBranch(tree, name,address,leaflist,basketsize,compress)
27{
28}
29
30////////////////////////////////////////////////////////////////////////////////
31
32THbookBranch::THbookBranch(TBranch *branch, const char *name, void *address, const char *leaflist, Int_t basketsize, Int_t compress)
33 :TBranch(branch,name,address,leaflist,basketsize,compress)
34{
35}
36
37////////////////////////////////////////////////////////////////////////////////
38
40{
41}
42
43
44////////////////////////////////////////////////////////////////////////////////
45/// Browser interface.
46
48{
49 THbookTree *tree = (THbookTree*)GetTree();
50 THbookFile *file = tree->GetHbookFile();
51 file->cd();
52
54}
55
56////////////////////////////////////////////////////////////////////////////////
57///get one entry from hbook ntuple
58
60{
61 THbookTree *tree = (THbookTree*)GetTree();
62 THbookFile *file = tree->GetHbookFile();
63 if (tree->GetType() == 0) {
64 return file->GetEntry(entry,tree->GetID(),0,tree->GetX());
65 } else {
66 tree->InitBranches(entry);
67 return file->GetEntryBranch(entry,tree->GetID());
68 }
69}
70
71////////////////////////////////////////////////////////////////////////////////
72/// Set address of this branch
73/// See important remark in the header of THbookTree
74
76{
78
79 if (GetUniqueID() != 0) return; //only for first variable of the block
80 THbookTree *tree = (THbookTree*)GetTree();
81 THbookFile *file = tree->GetHbookFile();
82 if (tree->GetType() != 0) {
83 file->SetBranchAddress(tree->GetID(),GetBlockName(),add);
84 }
85}
#define b(i)
Definition RSha256.hxx:100
long long Long64_t
Definition RtypesCore.h:80
#define ClassImp(name)
Definition Rtypes.h:377
char name[80]
Definition TGX11.cxx:110
A TTree is a list of TBranches.
Definition TBranch.h:93
TTree * GetTree() const
Definition TBranch.h:252
virtual void SetAddress(void *add)
Set address of this branch.
Definition TBranch.cxx:2682
void Browse(TBrowser *b) override
Browser interface.
Definition TBranch.cxx:699
Using a TBrowser one can browse all ROOT objects.
Definition TBrowser.h:37
HBOOK Branch.
Int_t GetEntry(Long64_t entry=0, Int_t getall=0) override
get one entry from hbook ntuple
const char * GetBlockName() const
void SetAddress(void *addobj) override
Set address of this branch See important remark in the header of THbookTree.
~THbookBranch() override
void Browse(TBrowser *b) override
Browser interface.
This class is an interface to the Hbook objects in Hbook files.
Definition THbookFile.h:29
Int_t GetEntryBranch(Int_t entry, Int_t id)
Read in memory only the branch bname.
virtual void SetBranchAddress(Int_t id, const char *bname, void *add)
Set branch address.
virtual Bool_t cd(const char *dirname="")
change directory to dirname
Int_t GetEntry(Int_t entry, Int_t id, Int_t atype, Float_t *x)
Read in memory all columns of entry number of ntuple id from the Hbook file.
A wrapper class supporting Hbook ntuples (CWN and RWN).
Definition THbookTree.h:30
virtual UInt_t GetUniqueID() const
Return the unique object id.
Definition TObject.cxx:456
A TTree represents a columnar dataset.
Definition TTree.h:79