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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);
42  virtual Int_t FillImpl(ROOT::Internal::TBranchIMTHelper *);
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