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THbookTree.h
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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#ifndef ROOT_THbookTree
13#define ROOT_THbookTree
14
15
16//////////////////////////////////////////////////////////////////////////
17// //
18// THbookTree //
19// //
20// A wrapper class supporting Hbook ntuples (CWN and RWN). //
21// The normal TTree calls can be used, including TTree::Draw(). //
22// Data read directly from the Hbook file via THbookFile. //
23// //
24//////////////////////////////////////////////////////////////////////////
25
26#include "TTree.h"
27#include "THbookFile.h"
28
29
30class THbookTree : public TTree {
31
32protected:
33 Int_t fID; //Hbook identifier
34 Int_t fType; //RWN (0) or CWN (1)
35 char *fX; //storage area for RWN
36 Bool_t fInit; //flag to know if branches computed
37 THbookFile *fFile; //pointer to Hbook file
38
39public:
40 THbookTree();
41 THbookTree(const char *name, Int_t id);
42 virtual ~THbookTree();
43 virtual Int_t GetEntry(Long64_t entry=0, Int_t getall=0);
45 virtual Int_t GetID() {return fID;}
46 virtual Int_t GetType() {return fType;}
47 Float_t *GetX() {return (Float_t*)fX;}
48 virtual void InitBranches(Long64_t entry);
49 char *MakeX(Int_t nvars) {fX = new char[nvars]; return fX;}
50 virtual void Print(Option_t *option="") const;
51 virtual Long64_t SetEntries(Long64_t n=-1);
53 virtual void SetType(Int_t atype) {fType = atype;}
54
55 ClassDef(THbookTree,1) //A wrapper class supporting Hbook ntuples (CWN and RWN)
56};
57
58#endif
int Int_t
Definition: RtypesCore.h:43
bool Bool_t
Definition: RtypesCore.h:61
long long Long64_t
Definition: RtypesCore.h:71
float Float_t
Definition: RtypesCore.h:55
const char Option_t
Definition: RtypesCore.h:64
#define ClassDef(name, id)
Definition: Rtypes.h:322
char name[80]
Definition: TGX11.cxx:109
This class is an interface to the Hbook objects in Hbook files.
Definition: THbookFile.h:29
A wrapper class supporting Hbook ntuples (CWN and RWN).
Definition: THbookTree.h:30
Float_t * GetX()
Definition: THbookTree.h:47
virtual Long64_t SetEntries(Long64_t n=-1)
Set the number of entries in the tree header and its branches.
Definition: THbookTree.cxx:135
virtual void Print(Option_t *option="") const
Print an overview of the hbook ntuple.
Definition: THbookTree.cxx:127
virtual void SetType(Int_t atype)
Definition: THbookTree.h:53
virtual Int_t GetEntry(Long64_t entry=0, Int_t getall=0)
get one entry from the hbook ntuple
Definition: THbookTree.cxx:97
char * MakeX(Int_t nvars)
Definition: THbookTree.h:49
virtual ~THbookTree()
destructor
Definition: THbookTree.cxx:87
virtual Int_t GetID()
Definition: THbookTree.h:45
THbookTree()
default constructor
Definition: THbookTree.cxx:61
virtual Int_t GetType()
Definition: THbookTree.h:46
Int_t fID
Definition: THbookTree.h:33
THbookFile * GetHbookFile()
Definition: THbookTree.h:44
THbookFile * fFile
Definition: THbookTree.h:37
Int_t fType
Definition: THbookTree.h:34
Bool_t fInit
Definition: THbookTree.h:36
virtual void SetHbookFile(THbookFile *file)
Definition: THbookTree.h:52
char * fX
Definition: THbookTree.h:35
virtual void InitBranches(Long64_t entry)
Initialize the branch addresses.
Definition: THbookTree.cxx:107
A TTree represents a columnar dataset.
Definition: TTree.h:78
const Int_t n
Definition: legend1.C:16
Definition: file.py:1