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Reference Guide
TBranchClones.h
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1 // @(#)root/tree
2 // Author: Rene Brun 11/02/96
3 
4 /*************************************************************************
5  * Copyright (C) 1995-2000, 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_TBranchClones
13 #define ROOT_TBranchClones
14 
15 
16 //////////////////////////////////////////////////////////////////////////
17 // //
18 // TBranchClones //
19 // //
20 // A Branch for the case of an array of clone objects. //
21 //////////////////////////////////////////////////////////////////////////
22 
23 
24 #include "TBranch.h"
25 
26 class TClonesArray;
27 class TTreeCloner;
28 
29 class TBranchClones : public TBranch {
30 
31 protected:
32  TClonesArray *fList; ///<! Pointer to the clonesarray
33  Int_t fRead; ///<! flag = 1 if clonesarray has been read
34  Int_t fN; ///<! Number of elements in ClonesArray
35  Int_t fNdataMax; ///<! Maximum value of fN
36  TString fClassName; ///< name of the class of the objets in the ClonesArray
37  TBranch *fBranchCount; ///< Branch with clones count
38 
39  friend class TTreeCloner;
40 
41  void Init(TTree *tree, TBranch *parent, const char *name, void *clonesaddress, Int_t basketsize=32000,Int_t compress=-1, Int_t splitlevel=1);
43 
44 public:
45  TBranchClones();
46  TBranchClones(TTree *tree, const char *name, void *clonesaddress, Int_t basketsize=32000,Int_t compress=-1, Int_t splitlevel=1);
47  TBranchClones(TBranch *parent, const char *name, void *clonesaddress, Int_t basketsize=32000,Int_t compress=-1, Int_t splitlevel=1);
48  virtual ~TBranchClones();
49 
50  virtual void Browse(TBrowser *b);
51  virtual const char* GetClassName() const { return fClassName; }
52  virtual Int_t GetEntry(Long64_t entry=0, Int_t getall = 0);
53  virtual Int_t GetN() const {return fN;}
54  TClonesArray *GetList() const {return fList;}
55  Bool_t IsFolder() const {return kTRUE;}
56  virtual void Print(Option_t *option="") const;
57  virtual void Reset(Option_t *option="");
58  virtual void ResetAfterMerge(TFileMergeInfo *);
59  virtual void SetAddress(void *add);
60  virtual void SetBasketSize(Int_t buffsize);
61  virtual void SetTree(TTree *tree) { fTree = tree; fBranchCount->SetTree(tree); }
62  virtual void UpdateFile();
63 
64 private:
65 
66  ClassDef(TBranchClones,2); //Branch in case of an array of clone objects
67 };
68 
69 #endif
TBranchClones()
Default and i/o constructor.
virtual void SetAddress(void *add)
Set address of this branch.
long long Long64_t
Definition: RtypesCore.h:69
TString fClassName
name of the class of the objets in the ClonesArray
Definition: TBranchClones.h:36
const char Option_t
Definition: RtypesCore.h:62
virtual Int_t GetEntry(Long64_t entry=0, Int_t getall=0)
Read all branches and return total number of bytes read.
virtual Int_t FillImpl(ROOT::Internal::TBranchIMTHelper *)
Loop on all branches and fill Basket buffer.
Int_t fRead
! flag = 1 if clonesarray has been read
Definition: TBranchClones.h:33
Basic string class.
Definition: TString.h:125
TBranch * fBranchCount
Branch with clones count.
Definition: TBranchClones.h:37
int Int_t
Definition: RtypesCore.h:41
bool Bool_t
Definition: RtypesCore.h:59
virtual ~TBranchClones()
Destructor.
virtual void SetTree(TTree *tree)
Definition: TBranch.h:234
virtual void UpdateFile()
Refresh the value of fDirectory (i.e.
#define ClassDef(name, id)
Definition: Rtypes.h:320
virtual const char * GetClassName() const
Return the name of the user class whose content is stored in this branch, if any. ...
Definition: TBranchClones.h:51
Using a TBrowser one can browse all ROOT objects.
Definition: TBrowser.h:37
TClonesArray * GetList() const
Definition: TBranchClones.h:54
virtual void SetBasketSize(Int_t buffsize)
Reset basket size for all sub-branches.
Bool_t IsFolder() const
Return kTRUE if more than one leaf or browsables, kFALSE otherwise.
Definition: TBranchClones.h:55
void Init(TTree *tree, TBranch *parent, const char *name, void *clonesaddress, Int_t basketsize=32000, Int_t compress=-1, Int_t splitlevel=1)
Initialization (non-virtual, to be called from constructor).
virtual void SetTree(TTree *tree)
Definition: TBranchClones.h:61
TTree * fTree
! Pointer to Tree header
Definition: TBranch.h:105
virtual void Reset(Option_t *option="")
Reset branch.
An array of clone (identical) objects.
Definition: TClonesArray.h:32
Class implementing or helping the various TTree cloning method.
Definition: TTreeCloner.h:38
A Branch for the case of an array of clone objects.
Definition: TBranchClones.h:29
TClonesArray * fList
! Pointer to the clonesarray
Definition: TBranchClones.h:32
virtual void Browse(TBrowser *b)
Browse this branch.
you should not use this method at all Int_t Int_t Double_t Double_t Double_t Int_t Double_t Double_t Double_t Double_t b
Definition: TRolke.cxx:630
Definition: tree.py:1
A TTree object has a header with a name and a title.
Definition: TTree.h:70
Int_t fN
! Number of elements in ClonesArray
Definition: TBranchClones.h:34
virtual Int_t GetN() const
Definition: TBranchClones.h:53
A TTree is a list of TBranches.
Definition: TBranch.h:59
const Bool_t kTRUE
Definition: RtypesCore.h:87
virtual void ResetAfterMerge(TFileMergeInfo *)
Reset branch after a merge.
char name[80]
Definition: TGX11.cxx:109
Int_t fNdataMax
! Maximum value of fN
Definition: TBranchClones.h:35
virtual void Print(Option_t *option="") const
Print branch parameters.