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TBranchObject.h
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1// @(#)root/tree:$Id$
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_TBranchObject
13#define ROOT_TBranchObject
14
15
16//////////////////////////////////////////////////////////////////////////
17// //
18// TBranchObject //
19// //
20// A Branch for the case of an object. //
21//////////////////////////////////////////////////////////////////////////
22
23
24#include "TBranch.h"
25
26class TBranchObject : public TBranch {
27
28protected:
30 kWarn = BIT(14)
31 };
32
33 /// In version of ROOT older then v6.12, kWarn was set to BIT(12)
34 /// which overlaps with TBranch::kBranchObject. Since it stored
35 /// in ROOT files as part of the TBranchObject and that we want
36 /// to reset in TBranchObject::Streamer, we need to keep track
37 /// of the old value.
39 kOldWarn = BIT(12)
40 };
41
42 TString fClassName; ///< Class name of referenced object
43 TObject *fOldObject; ///< !Pointer to old object
44
45 void Init(TTree *tree, TBranch *parent, const char *name, const char *classname, void *addobj, Int_t basketsize, Int_t splitlevel, Int_t compress, bool isptrptr);
46
47public:
49 TBranchObject(TBranch *parent, const char *name, const char *classname, void *addobj, Int_t basketsize=32000, Int_t splitlevel = 0, Int_t compress = ROOT::RCompressionSetting::EAlgorithm::kInherit, bool isptrptr = true);
50 TBranchObject(TTree *tree, const char *name, const char *classname, void *addobj, Int_t basketsize=32000, Int_t splitlevel = 0, Int_t compress = ROOT::RCompressionSetting::EAlgorithm::kInherit, bool isptrptr = true);
51 ~TBranchObject() override;
52
53 void Browse(TBrowser *b) override;
54 const char* GetClassName() const override { return fClassName.Data(); };
55 virtual const char* GetObjClassName() { return fClassName.Data(); };
56 Int_t GetEntry(Long64_t entry=0, Int_t getall = 0) override;
57 Int_t GetExpectedType(TClass *&clptr,EDataType &type) override;
58 bool IsFolder() const override;
59 void Print(Option_t *option="") const override;
60 void Reset(Option_t *option="") override;
61 void ResetAfterMerge(TFileMergeInfo *) override;
62 void SetAddress(void *addobj) override;
63 void SetAutoDelete(bool autodel=true) override;
64 void SetBasketSize(Int_t buffsize) override;
65 void SetupAddresses() override;
66 void UpdateAddress() override;
67
68private:
70
71 ClassDefOverride(TBranchObject,1); //Branch in case of an object
72};
73
74#endif
#define b(i)
Definition RSha256.hxx:100
int Int_t
Definition RtypesCore.h:45
long long Long64_t
Definition RtypesCore.h:80
const char Option_t
Definition RtypesCore.h:66
#define BIT(n)
Definition Rtypes.h:85
#define ClassDefOverride(name, id)
Definition Rtypes.h:341
EDataType
Definition TDataType.h:28
Option_t Option_t option
Option_t Option_t TPoint TPoint const char GetTextMagnitude GetFillStyle GetLineColor GetLineWidth GetMarkerStyle GetTextAlign GetTextColor GetTextSize void char Point_t Rectangle_t WindowAttributes_t Float_t Float_t Float_t Int_t Int_t UInt_t UInt_t Rectangle_t Int_t Int_t Window_t TString Int_t GCValues_t GetPrimarySelectionOwner GetDisplay GetScreen GetColormap GetNativeEvent const char const char dpyName wid window const char font_name cursor keysym reg const char only_if_exist regb h Point_t winding char text const char depth char const char Int_t count const char ColorStruct_t color const char Pixmap_t Pixmap_t PictureAttributes_t attr const char char ret_data h unsigned char height h Atom_t Int_t ULong_t ULong_t unsigned char prop_list Atom_t Atom_t Atom_t Time_t type
char name[80]
Definition TGX11.cxx:110
A helper class for managing IMT work during TTree:Fill operations.
A Branch for the case of an object.
void SetAddress(void *addobj) override
Set address of this branch.
void ResetAfterMerge(TFileMergeInfo *) override
Reset a Branch after a Merge operation (drop data but keep customizations)
const char * GetClassName() const override
Return the name of the user class whose content is stored in this branch, if any.
EStatusBitsOldValues
In version of ROOT older then v6.12, kWarn was set to BIT(12) which overlaps with TBranch::kBranchObj...
TObject * fOldObject
!Pointer to old object
bool IsFolder() const override
Return TRUE if more than one leaf or if fBrowsables, FALSE otherwise.
void SetupAddresses() override
– If the branch address is not set, we set all addresses starting with the top level parent branch.
Int_t GetExpectedType(TClass *&clptr, EDataType &type) override
Fill expectedClass and expectedType with information on the data type of the object/values contained ...
void UpdateAddress() override
Update branch addresses if a new object was created.
void Init(TTree *tree, TBranch *parent, const char *name, const char *classname, void *addobj, Int_t basketsize, Int_t splitlevel, Int_t compress, bool isptrptr)
Initialization routine (run from the constructor so do not make this function virtual)
virtual const char * GetObjClassName()
void SetAutoDelete(bool autodel=true) override
Set the AutoDelete bit.
Int_t GetEntry(Long64_t entry=0, Int_t getall=0) override
Read all branches of a BranchObject and return total number of bytes.
TString fClassName
Class name of referenced object.
~TBranchObject() override
Destructor for a BranchObject.
TBranchObject()
Default constructor for BranchObject.
void Print(Option_t *option="") const override
Print TBranch parameters.
Int_t FillImpl(ROOT::Internal::TBranchIMTHelper *) override
Loop on all leaves of this branch to fill Basket buffer.
void SetBasketSize(Int_t buffsize) override
Reset basket size for all subbranches of this branch.
void Reset(Option_t *option="") override
Reset a branch.
void Browse(TBrowser *b) override
Browse the branch content.
A TTree is a list of TBranches.
Definition TBranch.h:93
Using a TBrowser one can browse all ROOT objects.
Definition TBrowser.h:37
TClass instances represent classes, structs and namespaces in the ROOT type system.
Definition TClass.h:81
Mother of all ROOT objects.
Definition TObject.h:41
Basic string class.
Definition TString.h:139
const char * Data() const
Definition TString.h:376
A TTree represents a columnar dataset.
Definition TTree.h:79
@ kInherit
Some objects use this value to denote that the compression algorithm should be inherited from the par...
Definition Compression.h:91