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Reference Guide
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1 // @(#)root/tree:$Id$
2 // Author: Rene Brun 19/08/2004
4 /*************************************************************************
5  * Copyright (C) 1995-2004, 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  *************************************************************************/
12 #ifndef ROOT_TBranchRef
13 #define ROOT_TBranchRef
16 //////////////////////////////////////////////////////////////////////////
17 // //
18 // TBranchRef //
19 // //
20 // A Branch to support referenced objects on other branches //
21 //////////////////////////////////////////////////////////////////////////
24 #include "TBranch.h"
25 #include "TRefTable.h"
27 class TTree;
29 class TBranchRef : public TBranch {
30 private:
31  Long64_t fRequestedEntry; ///<! Cursor indicating which entry is being requested.
33 protected:
34  TRefTable *fRefTable; ///< pointer to the TRefTable
36  void ReadLeavesImpl(TBuffer &b);
37  void FillLeavesImpl(TBuffer &b);
39 public:
40  TBranchRef();
42  virtual ~TBranchRef();
43  virtual void Clear(Option_t *option="");
44  TRefTable *GetRefTable() const {return fRefTable;}
45  virtual Bool_t Notify();
46  virtual void Print(Option_t *option="") const;
47  virtual void Reset(Option_t *option="");
48  virtual void ResetAfterMerge(TFileMergeInfo *);
49  virtual Int_t SetParent(const TObject* obj, Int_t branchID);
50  virtual void SetRequestedEntry(Long64_t entry) {fRequestedEntry = entry;}
52 private:
55  ClassDef(TBranchRef,1); //to support referenced objects on other branches
56 };
58 #endif
virtual void ResetAfterMerge(TFileMergeInfo *)
Reset a Branch after a Merge operation (drop data but keep customizations) TRefTable is cleared...
Definition: TBranchRef.cxx:198
long long Long64_t
Definition: RtypesCore.h:69
TRefTable * GetRefTable() const
Definition: TBranchRef.h:44
const char Option_t
Definition: RtypesCore.h:62
void ReadLeavesImpl(TBuffer &b)
This function called by TBranch::GetEntry overloads TBranch::ReadLeaves.
Definition: TBranchRef.cxx:167
Default constructor.
Definition: TBranchRef.cxx:46
Buffer base class used for serializing objects.
Definition: TBuffer.h:40
int Int_t
Definition: RtypesCore.h:41
bool Bool_t
Definition: RtypesCore.h:59
virtual Bool_t Notify()
This function is called by TRefTable::Notify, itself called by TRef::GetObject.
Definition: TBranchRef.cxx:115
virtual ~TBranchRef()
Typical destructor.
Definition: TBranchRef.cxx:87
virtual void Reset(Option_t *option="")
Definition: TBranchRef.cxx:187
virtual void Print(Option_t *option="") const
Print the TRefTable branch.
Definition: TBranchRef.cxx:159
#define ClassDef(name, id)
Definition: Rtypes.h:320
A branch containing and managing a TRefTable for TRef autoloading.
Definition: TBranchRef.h:29
void FillLeavesImpl(TBuffer &b)
This function called by TBranch::Fill overloads TBranch::FillLeaves.
Definition: TBranchRef.cxx:176
Long64_t fRequestedEntry
! Cursor indicating which entry is being requested.
Definition: TBranchRef.h:31
virtual void SetRequestedEntry(Long64_t entry)
Definition: TBranchRef.h:50
TRefTable * fRefTable
pointer to the TRefTable
Definition: TBranchRef.h:34
virtual void Clear(Option_t *option="")
Clear entries in the TRefTable.
Definition: TBranchRef.cxx:95
A TRefTable maintains the association between a referenced object and the parent object supporting th...
Definition: TRefTable.h:35
virtual Int_t SetParent(const TObject *obj, Int_t branchID)
Set the current parent branch.
Definition: TBranchRef.cxx:212
Mother of all ROOT objects.
Definition: TObject.h:37
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
A TTree is a list of TBranches.
Definition: TBranch.h:62
virtual Int_t FillImpl(ROOT::Internal::TBranchIMTHelper *)
Fill the branch basket with the referenced objects parent numbers.
Definition: TBranchRef.cxx:103