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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_t 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_t isptrptr = kTRUE);
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_t isptrptr = kTRUE);
51 virtual ~TBranchObject();
52
53 virtual void Browse(TBrowser *b);
54 virtual const char* GetClassName() const { return fClassName.Data(); };
55 virtual const char* GetObjClassName() { return fClassName.Data(); };
56 virtual Int_t GetEntry(Long64_t entry=0, Int_t getall = 0);
57 virtual Int_t GetExpectedType(TClass *&clptr,EDataType &type);
58 Bool_t IsFolder() const;
59 virtual void Print(Option_t *option="") const;
60 virtual void Reset(Option_t *option="");
61 virtual void ResetAfterMerge(TFileMergeInfo *);
62 virtual void SetAddress(void *addobj);
63 virtual void SetAutoDelete(Bool_t autodel=kTRUE);
64 virtual void SetBasketSize(Int_t buffsize);
65 virtual void SetupAddresses();
66 virtual void UpdateAddress();
67
68private:
70
71 ClassDef(TBranchObject,1); //Branch in case of an object
72};
73
74#endif
int Int_t
Definition: CPyCppyy.h:43
#define b(i)
Definition: RSha256.hxx:100
bool Bool_t
Definition: RtypesCore.h:63
const Bool_t kTRUE
Definition: RtypesCore.h:100
const char Option_t
Definition: RtypesCore.h:66
#define ClassDef(name, id)
Definition: Rtypes.h:325
#define BIT(n)
Definition: Rtypes.h:85
EDataType
Definition: TDataType.h:28
int type
Definition: TGX11.cxx:121
A helper class for managing IMT work during TTree:Fill operations.
A Branch for the case of an object.
Definition: TBranchObject.h:26
virtual void SetBasketSize(Int_t buffsize)
Reset basket size for all subbranches of this branch.
virtual void SetupAddresses()
– If the branch address is not set, we set all addresses starting with the top level parent branch.
virtual Int_t GetEntry(Long64_t entry=0, Int_t getall=0)
Read all branches of a BranchObject and return total number of bytes.
virtual ~TBranchObject()
Destructor for a BranchObject.
EStatusBitsOldValues
In version of ROOT older then v6.12, kWarn was set to BIT(12) which overlaps with TBranch::kBranchObj...
Definition: TBranchObject.h:38
virtual Int_t FillImpl(ROOT::Internal::TBranchIMTHelper *)
Loop on all leaves of this branch to fill Basket buffer.
TObject * fOldObject
!Pointer to old object
Definition: TBranchObject.h:43
Bool_t IsFolder() const
Return TRUE if more than one leaf or if fBrowsables, FALSE otherwise.
virtual void ResetAfterMerge(TFileMergeInfo *)
Reset a Branch after a Merge operation (drop data but keep customizations)
virtual void Print(Option_t *option="") const
Print TBranch parameters.
virtual const char * GetObjClassName()
Definition: TBranchObject.h:55
virtual Int_t GetExpectedType(TClass *&clptr, EDataType &type)
Fill expectedClass and expectedType with information on the data type of the object/values contained ...
TString fClassName
Class name of referenced object.
Definition: TBranchObject.h:42
virtual void Browse(TBrowser *b)
Browse the branch content.
virtual void UpdateAddress()
Update branch addresses if a new object was created.
virtual void SetAutoDelete(Bool_t autodel=kTRUE)
Set the AutoDelete bit.
TBranchObject()
Default constructor for BranchObject.
void Init(TTree *tree, TBranch *parent, const char *name, const char *classname, void *addobj, Int_t basketsize, Int_t splitlevel, Int_t compress, Bool_t isptrptr)
Initialization routine (run from the constructor so do not make this function virtual)
virtual const char * GetClassName() const
Return the name of the user class whose content is stored in this branch, if any.
Definition: TBranchObject.h:54
virtual void Reset(Option_t *option="")
Reset a branch.
virtual void SetAddress(void *addobj)
Set address of this branch.
A TTree is a list of TBranches.
Definition: TBranch.h:89
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:80
Mother of all ROOT objects.
Definition: TObject.h:37
EStatusBits
Definition: TObject.h:57
Basic string class.
Definition: TString.h:136
const char * Data() const
Definition: TString.h:369
A TTree represents a columnar dataset.
Definition: TTree.h:79
long long Long64_t
Definition: cpp_cppyy.h:13
static const std::string name("name")
Definition: tree.py:1
@ kInherit
Some objects use this value to denote that the compression algorithm should be inherited from the par...
Definition: Compression.h:86