A Branch for the case of an object.

Definition at line 44 of file TBranchElement.h.

Public Types
enum	EBranchElementType { kLeafNode = 0, kBaseClassNode = 1, kObjectNode = 2, kClonesNode = 3, kSTLNode = 4, kClonesMemberNode = 31, kSTLMemberNode = 41 }

Public Types inherited from TObject
enum	{ kIsOnHeap = 0x01000000, kNotDeleted = 0x02000000, kZombie = 0x04000000, kBitMask = 0x00ffffff }

enum	{ kSingleKey = BIT(0), kOverwrite = BIT(1), kWriteDelete = BIT(2) }

enum	EStatusBits { kCanDelete = BIT(0), kMustCleanup = BIT(3), kObjInCanvas = BIT(3), kIsReferenced = BIT(4), kHasUUID = BIT(5), kCannotPick = BIT(6), kNoContextMenu = BIT(8), kInvalidObject = BIT(13) }

Public Member Functions
	TBranchElement ()
	Default and I/O constructor. More...

	TBranchElement (TTree tree, const char name, TStreamerInfo sinfo, Int_t id, char pointer, Int_t basketsize=32000, Int_t splitlevel=0, Int_t btype=0)
	Constructor when the branch object is not a TClonesArray nor an STL container. More...

	TBranchElement (TTree tree, const char name, TClonesArray *clones, Int_t basketsize=32000, Int_t splitlevel=0, Int_t compress=-1)
	Constructor when the branch object is a TClonesArray. More...

	TBranchElement (TTree tree, const char name, TVirtualCollectionProxy *cont, Int_t basketsize=32000, Int_t splitlevel=0, Int_t compress=-1)
	Constructor when the branch object is an STL collection. More...

	TBranchElement (TBranch parent, const char name, TStreamerInfo sinfo, Int_t id, char pointer, Int_t basketsize=32000, Int_t splitlevel=0, Int_t btype=0)
	Constructor when the branch object is not a TClonesArray nor an STL container. More...

	TBranchElement (TBranch parent, const char name, TClonesArray *clones, Int_t basketsize=32000, Int_t splitlevel=0, Int_t compress=-1)
	Constructor when the branch object is a TClonesArray. More...

	TBranchElement (TBranch parent, const char name, TVirtualCollectionProxy *cont, Int_t basketsize=32000, Int_t splitlevel=0, Int_t compress=-1)
	Constructor when the branch object is an STL collection. More...

virtual	~TBranchElement ()
	Destructor. More...

virtual void	Browse (TBrowser *b)
	Browse the branch content. More...

virtual TBranch *	FindBranch (const char *name)
	Find the immediate sub-branch with passed name. More...

virtual TLeaf *	FindLeaf (const char *name)
	Find the leaf corresponding to the name 'searchname'. More...

virtual char *	GetAddress () const
	Get the branch address. More...

TBranchElement *	GetBranchCount () const

TBranchElement *	GetBranchCount2 () const

Int_t *	GetBranchOffset () const

UInt_t	GetCheckSum ()

virtual TClass *	GetClass () const

virtual const char *	GetClassName () const
	Return the name of the user class whose content is stored in this branch, if any. More...

Int_t	GetClassVersion ()

virtual const char *	GetClonesName () const

TVirtualCollectionProxy *	GetCollectionProxy ()
	Return the collection proxy describing the branch content, if any. More...

TClass *	GetCurrentClass ()
	Return a pointer to the current type of the data member corresponding to branch element. More...

virtual Int_t	GetEntry (Long64_t entry=0, Int_t getall=0)
	Read all branches of a BranchElement and return total number of bytes. More...

virtual Int_t	GetExpectedType (TClass *&clptr, EDataType &type)
	Fill expectedClass and expectedType with information on the data type of the object/values contained in this branch (and thus the type of pointers expected to be passed to Set[Branch]Address return 0 in case of success and > 0 in case of failure. More...

const char *	GetIconName () const
	Return icon name depending on type of branch element. More...

Int_t	GetID () const

TStreamerInfo *	GetInfo () const
	Get streamer info for the branch class. More...

Bool_t	GetMakeClass () const
	Return whether this branch is in a mode where the object are decomposed or not (Also known as MakeClass mode). More...

virtual Int_t	GetMaximum () const
	Return maximum count value of the branchcount if any. More...

Int_t	GetNdata () const

char *	GetObject () const
	Return a pointer to our object. More...

virtual const char *	GetParentName () const

Int_t	GetStreamerType () const

virtual TClass *	GetTargetClass ()

Int_t	GetType () const

template<typename T >
T	GetTypedValue (Int_t i, Int_t len, Bool_t subarr=kFALSE) const

virtual const char *	GetTypeName () const
	Return type name of element in the branch. More...

Double_t	GetValue (Int_t i, Int_t len, Bool_t subarr=kFALSE) const

virtual void *	GetValuePointer () const
	Returns pointer to first data element of this branch. More...

Bool_t	IsBranchFolder () const

Bool_t	IsFolder () const
	Return kTRUE if more than one leaf, kFALSE otherwise. More...

virtual Bool_t	IsObjectOwner () const

virtual Bool_t	Notify ()
	This method must be overridden to handle object notification. More...

virtual void	Print (Option_t *option="") const
	Print branch parameters. More...

void	PrintValue (Int_t i) const
	Prints values of leaves. More...

virtual void	Reset (Option_t *option="")
	Reset a Branch. More...

virtual void	ResetAddress ()
	Set branch address to zero and free all allocated memory. More...

virtual void	ResetAfterMerge (TFileMergeInfo *)
	Reset a Branch after a Merge operation (drop data but keep customizations) More...

virtual void	ResetDeleteObject ()
	Release ownership of any allocated objects. More...

virtual void	SetAddress (void *addobj)
	Point this branch at an object. More...

virtual void	SetBasketSize (Int_t buffsize)
	Reset the basket size for all sub-branches of this branch element. More...

virtual void	SetBranchFolder ()

virtual void	SetClassName (const char *name)

virtual Bool_t	SetMakeClass (Bool_t decomposeObj=kTRUE)
	Set the branch in a mode where the object are decomposed (Also known as MakeClass mode). More...

virtual void	SetObject (void *objadd)
	Set object this branch is pointing to. More...

virtual void	SetOffset (Int_t offset)
	Set offset of the object (to which the data member represented by this branch belongs) inside its containing object (if any). More...

void	SetParentClass (TClass *clparent)

virtual void	SetParentName (const char *name)

virtual void	SetTargetClass (const char *name)
	Set the name of the class of the in-memory object into which the data will loaded. More...

virtual void	SetType (Int_t btype)

virtual void	SetupAddresses ()
	If the branch address is not set, we set all addresses starting with the top level parent branch. More...

virtual void	UpdateFile ()
	Refresh the value of fDirectory (i.e. More...

Public Member Functions inherited from TBranch
	TBranch ()
	Default constructor. Used for I/O by default. More...

	TBranch (TTree tree, const char name, void address, const char leaflist, Int_t basketsize=32000, Int_t compress=-1)
	Create a Branch as a child of a Tree. More...

	TBranch (TBranch parent, const char name, void address, const char leaflist, Int_t basketsize=32000, Int_t compress=-1)
	Create a Branch as a child of another Branch. More...

virtual	~TBranch ()
	Destructor. More...

virtual void	AddBasket (TBasket &b, Bool_t ondisk, Long64_t startEntry)
	Add the basket to this branch. More...

virtual void	AddLastBasket (Long64_t startEntry)
	Add the start entry of the write basket (not yet created) More...

Int_t	BackFill ()
	Loop on all leaves of this branch to back fill Basket buffer. More...

virtual void	DeleteBaskets (Option_t *option="")
	Loop on all branch baskets. More...

virtual void	DropBaskets (Option_t *option="")
	Loop on all branch baskets. More...

void	ExpandBasketArrays ()
	Increase BasketEntry buffer of a minimum of 10 locations and a maximum of 50 per cent of current size. More...

Int_t	Fill ()

Int_t	FlushBaskets ()
	Flush to disk all the baskets of this branch and any of subbranches. More...

Int_t	FlushOneBasket (UInt_t which)
	If we have a write basket in memory and it contains some entries and has not yet been written to disk, we write it and delete it from memory. More...

TBasket *	GetBasket (Int_t basket)
	Return pointer to basket basketnumber in this Branch. More...

Int_t *	GetBasketBytes () const

Long64_t *	GetBasketEntry () const

virtual Long64_t	GetBasketSeek (Int_t basket) const
	Return address of basket in the file. More...

virtual Int_t	GetBasketSize () const

virtual TList *	GetBrowsables ()
	Returns (and, if 0, creates) browsable objects for this branch See TVirtualBranchBrowsable::FillListOfBrowsables. More...

Int_t	GetCompressionAlgorithm () const

Int_t	GetCompressionLevel () const

Int_t	GetCompressionSettings () const

TDirectory *	GetDirectory () const

Long64_t	GetEntries () const

virtual Int_t	GetEntryExport (Long64_t entry, Int_t getall, TClonesArray *list, Int_t n)
	Read all leaves of an entry and export buffers to real objects in a TClonesArray list. More...

Long64_t	GetEntryNumber () const

Int_t	GetEntryOffsetLen () const

Int_t	GetEvent (Long64_t entry=0)

virtual TFile *	GetFile (Int_t mode=0)
	Return pointer to the file where branch buffers reside, returns 0 in case branch buffers reside in the same file as tree header. More...

const char *	GetFileName () const

Long64_t	GetFirstEntry () const

virtual TLeaf *	GetLeaf (const char *name) const
	Return pointer to the 1st Leaf named name in thisBranch. More...

TObjArray *	GetListOfBaskets ()

TObjArray *	GetListOfBranches ()

TObjArray *	GetListOfLeaves ()

Int_t	GetMaxBaskets () const

TBranch *	GetMother () const
	Get our top-level parent branch in the tree. More...

Int_t	GetNleaves () const

Int_t	GetOffset () const

Int_t	GetReadBasket () const

Long64_t	GetReadEntry () const

virtual Int_t	GetRow (Int_t row)
	Return all elements of one row unpacked in internal array fValues [Actually just returns 1 (?)]. More...

Int_t	GetSplitLevel () const

TBranch *	GetSubBranch (const TBranch *br) const
	Find the parent branch of child. More...

Long64_t	GetTotalSize (Option_t *option="") const
	Return total number of bytes in the branch (including current buffer) More...

Long64_t	GetTotBytes (Option_t *option="") const
	Return total number of bytes in the branch (excluding current buffer) if option ="*" includes all sub-branches of this branch too. More...

TBuffer *	GetTransientBuffer (Int_t size)
	Returns the transient buffer currently used by this TBranch for reading/writing baskets. More...

TTree *	GetTree () const

Int_t	GetWriteBasket () const

Long64_t	GetZipBytes (Option_t *option="") const
	Return total number of zip bytes in the branch if option ="*" includes all sub-branches of this branch too. More...

Bool_t	IsAutoDelete () const
	Return kTRUE if an existing object in a TBranchObject must be deleted. More...

virtual void	KeepCircular (Long64_t maxEntries)
	keep a maximum of fMaxEntries in memory More...

virtual Int_t	LoadBaskets ()
	Baskets associated to this branch are forced to be in memory. More...

virtual void	ReadBasket (TBuffer &b)
	Loop on all leaves of this branch to read Basket buffer. More...

virtual void	Refresh (TBranch *b)
	Refresh this branch using new information in b This function is called by TTree::Refresh. More...

virtual void	ResetReadEntry ()

virtual void	SetAutoDelete (Bool_t autodel=kTRUE)
	Set the automatic delete bit. More...

virtual void	SetBufferAddress (TBuffer *entryBuffer)
	Set address of this branch directly from a TBuffer to avoid streaming. More...

void	SetCompressionAlgorithm (Int_t algorithm=0)
	Set compression algorithm. More...

void	SetCompressionLevel (Int_t level=1)
	Set compression level. More...

void	SetCompressionSettings (Int_t settings=1)
	Set compression settings. More...

virtual void	SetEntries (Long64_t entries)
	Set the number of entries in this branch. More...

virtual void	SetEntryOffsetLen (Int_t len, Bool_t updateSubBranches=kFALSE)
	Update the default value for the branch's fEntryOffsetLen if and only if it was already non zero (and the new value is not zero) If updateExisting is true, also update all the existing branches. More...

virtual void	SetFile (TFile *file=0)
	Set file where this branch writes/reads its buffers. More...

virtual void	SetFile (const char *filename)
	Set file where this branch writes/reads its buffers. More...

virtual void	SetFirstEntry (Long64_t entry)
	set the first entry number (case of TBranchSTL) More...

virtual void	SetStatus (Bool_t status=1)
	Set branch status to Process or DoNotProcess. More...

virtual void	SetTree (TTree *tree)

virtual void	UpdateAddress ()

Public Member Functions inherited from TNamed
	TNamed ()

	TNamed (const char name, const char title)

	TNamed (const TString &name, const TString &title)

	TNamed (const TNamed &named)
	TNamed copy ctor. More...

virtual	~TNamed ()

virtual void	Clear (Option_t *option="")
	Set name and title to empty strings (""). More...

virtual TObject *	Clone (const char *newname="") const
	Make a clone of an object using the Streamer facility. More...

virtual Int_t	Compare (const TObject *obj) const
	Compare two TNamed objects. More...

virtual void	Copy (TObject &named) const
	Copy this to obj. More...

virtual void	FillBuffer (char *&buffer)
	Encode TNamed into output buffer. More...

virtual const char *	GetName () const
	Returns name of object. More...

virtual const char *	GetTitle () const
	Returns title of object. More...

virtual ULong_t	Hash () const
	Return hash value for this object. More...

virtual Bool_t	IsSortable () const

virtual void	ls (Option_t *option="") const
	List TNamed name and title. More...

TNamed &	operator= (const TNamed &rhs)
	TNamed assignment operator. More...

virtual void	SetName (const char *name)
	Set the name of the TNamed. More...

virtual void	SetNameTitle (const char name, const char title)
	Set all the TNamed parameters (name and title). More...

virtual void	SetTitle (const char *title="")
	Set the title of the TNamed. More...

virtual Int_t	Sizeof () const
	Return size of the TNamed part of the TObject. More...

Public Member Functions inherited from TObject
	TObject ()
	TObject constructor. More...

	TObject (const TObject &object)
	TObject copy ctor. More...

virtual	~TObject ()
	TObject destructor. More...

void	AbstractMethod (const char *method) const
	Use this method to implement an "abstract" method that you don't want to leave purely abstract. More...

virtual void	AppendPad (Option_t *option="")
	Append graphics object to current pad. More...

virtual const char *	ClassName () const
	Returns name of class to which the object belongs. More...

virtual void	Delete (Option_t *option="")
	Delete this object. More...

virtual Int_t	DistancetoPrimitive (Int_t px, Int_t py)
	Computes distance from point (px,py) to the object. More...

virtual void	Draw (Option_t *option="")
	Default Draw method for all objects. More...

virtual void	DrawClass () const
	Draw class inheritance tree of the class to which this object belongs. More...

virtual TObject *	DrawClone (Option_t *option="") const
	Draw a clone of this object in the current selected pad for instance with: `gROOT->SetSelectedPad(gPad)`. More...

virtual void	Dump () const
	Dump contents of object on stdout. More...

virtual void	Error (const char method, const char msgfmt,...) const
	Issue error message. More...

virtual void	Execute (const char method, const char params, Int_t *error=0)
	Execute method on this object with the given parameter string, e.g. More...

virtual void	Execute (TMethod method, TObjArray params, Int_t *error=0)
	Execute method on this object with parameters stored in the TObjArray. More...

virtual void	ExecuteEvent (Int_t event, Int_t px, Int_t py)
	Execute action corresponding to an event at (px,py). More...

virtual void	Fatal (const char method, const char msgfmt,...) const
	Issue fatal error message. More...

virtual TObject *	FindObject (const char *name) const
	Must be redefined in derived classes. More...

virtual TObject *	FindObject (const TObject *obj) const
	Must be redefined in derived classes. More...

virtual Option_t *	GetDrawOption () const
	Get option used by the graphics system to draw this object. More...

virtual char *	GetObjectInfo (Int_t px, Int_t py) const
	Returns string containing info about the object at position (px,py). More...

virtual Option_t *	GetOption () const

virtual UInt_t	GetUniqueID () const
	Return the unique object id. More...

virtual Bool_t	HandleTimer (TTimer *timer)
	Execute action in response of a timer timing out. More...

virtual void	Info (const char method, const char msgfmt,...) const
	Issue info message. More...

virtual Bool_t	InheritsFrom (const char *classname) const
	Returns kTRUE if object inherits from class "classname". More...

virtual Bool_t	InheritsFrom (const TClass *cl) const
	Returns kTRUE if object inherits from TClass cl. More...

virtual void	Inspect () const
	Dump contents of this object in a graphics canvas. More...

void	InvertBit (UInt_t f)

virtual Bool_t	IsEqual (const TObject *obj) const
	Default equal comparison (objects are equal if they have the same address in memory). More...

Bool_t	IsOnHeap () const

Bool_t	IsZombie () const

void	MayNotUse (const char *method) const
	Use this method to signal that a method (defined in a base class) may not be called in a derived class (in principle against good design since a child class should not provide less functionality than its parent, however, sometimes it is necessary). More...

void	Obsolete (const char method, const char asOfVers, const char *removedFromVers) const
	Use this method to declare a method obsolete. More...

void	operator delete (void *ptr)
	Operator delete. More...

void	operator delete[] (void *ptr)
	Operator delete []. More...

void *	operator new (size_t sz)

void *	operator new (size_t sz, void *vp)

void *	operator new[] (size_t sz)

void *	operator new[] (size_t sz, void *vp)

TObject &	operator= (const TObject &rhs)
	TObject assignment operator. More...

virtual void	Paint (Option_t *option="")
	This method must be overridden if a class wants to paint itself. More...

virtual void	Pop ()
	Pop on object drawn in a pad to the top of the display list. More...

virtual Int_t	Read (const char *name)
	Read contents of object with specified name from the current directory. More...

virtual void	RecursiveRemove (TObject *obj)
	Recursively remove this object from a list. More...

void	ResetBit (UInt_t f)

virtual void	SaveAs (const char filename="", Option_t option="") const
	Save this object in the file specified by filename. More...

virtual void	SavePrimitive (std::ostream &out, Option_t *option="")
	Save a primitive as a C++ statement(s) on output stream "out". More...

void	SetBit (UInt_t f, Bool_t set)
	Set or unset the user status bits as specified in f. More...

void	SetBit (UInt_t f)

virtual void	SetDrawOption (Option_t *option="")
	Set drawing option for object. More...

virtual void	SetUniqueID (UInt_t uid)
	Set the unique object id. More...

virtual void	SysError (const char method, const char msgfmt,...) const
	Issue system error message. More...

Bool_t	TestBit (UInt_t f) const

Int_t	TestBits (UInt_t f) const

virtual void	UseCurrentStyle ()
	Set current style settings in this object This function is called when either TCanvas::UseCurrentStyle or TROOT::ForceStyle have been invoked. More...

virtual void	Warning (const char method, const char msgfmt,...) const
	Issue warning message. More...

virtual Int_t	Write (const char *name=0, Int_t option=0, Int_t bufsize=0)
	Write this object to the current directory. More...

virtual Int_t	Write (const char *name=0, Int_t option=0, Int_t bufsize=0) const
	Write this object to the current directory. More...

Public Member Functions inherited from TAttFill
	TAttFill ()
	AttFill default constructor. More...

	TAttFill (Color_t fcolor, Style_t fstyle)
	AttFill normal constructor. More...

virtual	~TAttFill ()
	AttFill destructor. More...

void	Copy (TAttFill &attfill) const
	Copy this fill attributes to a new TAttFill. More...

virtual Color_t	GetFillColor () const
	Return the fill area color. More...

virtual Style_t	GetFillStyle () const
	Return the fill area style. More...

virtual Bool_t	IsTransparent () const

virtual void	Modify ()
	Change current fill area attributes if necessary. More...

virtual void	ResetAttFill (Option_t *option="")
	Reset this fill attributes to default values. More...

virtual void	SaveFillAttributes (std::ostream &out, const char *name, Int_t coldef=1, Int_t stydef=1001)
	Save fill attributes as C++ statement(s) on output stream out. More...

virtual void	SetFillAttributes ()
	Invoke the DialogCanvas Fill attributes. More...

virtual void	SetFillColor (Color_t fcolor)
	Set the fill area color. More...

virtual void	SetFillColorAlpha (Color_t fcolor, Float_t falpha)
	Set a transparent fill color. More...

virtual void	SetFillStyle (Style_t fstyle)
	Set the fill area style. More...

Protected Types
enum	{ kBranchFolder = BIT(14), kDeleteObject = BIT(16), kCache = BIT(18), kOwnOnfileObj = BIT(19), kAddressSet = BIT(20), kMakeClass = BIT(21), kDecomposedObj = BIT(21) }

Protected Types inherited from TBranch
enum	EStatusBits { kAutoDelete = BIT(15), kDoNotUseBufferMap = BIT(22) }

typedef void(TBranch::*	FillLeaves_t) (TBuffer &b)

typedef void(TBranch::*	ReadLeaves_t) (TBuffer &b)

Protected Member Functions
void	BuildTitle (const char *name)
	Set branch and leaf name and title in the case of a container sub-branch. More...

void	FillLeavesAssociativeCollectionMember (TBuffer &b)
	Write leaves into i/o buffers for this branch. More...

void	FillLeavesClones (TBuffer &b)
	Write leaves into i/o buffers for this branch. More...

void	FillLeavesClonesMember (TBuffer &b)
	Write leaves into i/o buffers for this branch. More...

void	FillLeavesCollection (TBuffer &b)
	Write leaves into i/o buffers for this branch. More...

void	FillLeavesCollectionMember (TBuffer &b)
	Write leaves into i/o buffers for this branch. More...

void	FillLeavesCollectionSplitPtrMember (TBuffer &b)
	Write leaves into i/o buffers for this branch. More...

void	FillLeavesCollectionSplitVectorPtrMember (TBuffer &b)
	Write leaves into i/o buffers for this branch. More...

void	FillLeavesCustomStreamer (TBuffer &b)
	Write leaves into i/o buffers for this branch. More...

void	FillLeavesImpl (TBuffer &b)
	Unconfiguration Fill Leave function. More...

void	FillLeavesMakeClass (TBuffer &b)
	Write leaves into i/o buffers for this branch. More...

void	FillLeavesMember (TBuffer &b)
	Write leaves into i/o buffers for this branch. More...

void	FillLeavesMemberBranchCount (TBuffer &b)
	Write leaves into i/o buffers for this branch. More...

void	FillLeavesMemberCounter (TBuffer &b)
	Write leaves into i/o buffers for this branch. More...

TStreamerInfo *	GetInfoImp () const
	Get streamer info for the branch class. More...

TClass *	GetParentClass ()
	Return a pointer to the parent class of the branch element. More...

void	Init (TTree tree, TBranch parent, const char name, TStreamerInfo sinfo, Int_t id, char *pointer, Int_t basketsize=32000, Int_t splitlevel=0, Int_t btype=0)
	Init when the branch object is not a TClonesArray nor an STL container. More...

void	Init (TTree tree, TBranch parent, const char name, TClonesArray clones, Int_t basketsize=32000, Int_t splitlevel=0, Int_t compress=-1)
	Init when the branch object is a TClonesArray. More...

void	Init (TTree tree, TBranch parent, const char name, TVirtualCollectionProxy cont, Int_t basketsize=32000, Int_t splitlevel=0, Int_t compress=-1)
	Init when the branch object is an STL collection. More...

virtual void	InitializeOffsets ()
	Initialize the base class subobjects offsets of our sub-branches and set fOffset if we are a container sub-branch. More...

virtual void	InitInfo ()
	Init the streamer info for the branch class, try to compensate for class code unload/reload and schema evolution. More...

Bool_t	IsMissingCollection () const
	Detect a collection written using a zero pointer in old versions of root. More...

void	ReadLeavesClones (TBuffer &b)
	Read leaves into i/o buffers for this branch. More...

void	ReadLeavesClonesMember (TBuffer &b)
	Read leaves into i/o buffers for this branch. More...

void	ReadLeavesCollection (TBuffer &b)
	Read leaves into i/o buffers for this branch. More...

void	ReadLeavesCollectionMember (TBuffer &b)
	Read leaves into i/o buffers for this branch. More...

void	ReadLeavesCollectionSplitPtrMember (TBuffer &b)
	Read leaves into i/o buffers for this branch. More...

void	ReadLeavesCollectionSplitVectorPtrMember (TBuffer &b)
	Read leaves into i/o buffers for this branch. More...

void	ReadLeavesCustomStreamer (TBuffer &b)
	Read leaves into i/o buffers for this branch. More...

void	ReadLeavesImpl (TBuffer &b)
	Unconfiguration Read Leave function. More...

void	ReadLeavesMakeClass (TBuffer &b)
	Read leaves into i/o buffers for this branch. More...

void	ReadLeavesMember (TBuffer &b)
	Read leaves into i/o buffers for this branch. More...

void	ReadLeavesMemberBranchCount (TBuffer &b)
	Read leaves into i/o buffers for this branch. More...

void	ReadLeavesMemberCounter (TBuffer &b)
	Read leaves into i/o buffers for this branch. More...

void	ReleaseObject ()
	Delete any object we may have allocated on a previous call to SetAddress. More...

void	SetBranchCount (TBranchElement *bre)
	Set the branch counter for this branch. More...

void	SetBranchCount2 (TBranchElement *bre)

void	SetFillActionSequence ()
	Set the sequence of actions needed to write the data out from the buffer. More...

void	SetFillLeavesPtr ()
	Set the FillLeaves pointer to execute the expected operations. More...

void	SetReadActionSequence ()
	Set the sequence of actions needed to read the data out of the buffer. More...

void	SetReadLeavesPtr ()
	Set the ReadLeaves pointer to execute the expected operations. More...

void	SetupAddressesImpl ()
	If the branch address is not set, we set all addresses starting with the top level parent branch. More...

Int_t	Unroll (const char name, TClass cltop, TClass cl, char ptr, Int_t basketsize, Int_t splitlevel, Int_t btype)
	Split class cl into sub-branches of this branch. More...

void	ValidateAddress () const

Protected Member Functions inherited from TBranch
void	FillLeavesImpl (TBuffer &b)
	Loop on all leaves of this branch to fill Basket buffer. More...

TBasket *	GetFreshBasket ()
	Return a fresh basket by either resusing an existing basket that needs to be drop (according to TTree::MemoryFull) or create a new one. More...

TString	GetRealFileName () const
	Get real file name. More...

void	Init (const char name, const char leaflist, Int_t compress)

void	ReadLeaves0Impl (TBuffer &b)
	Read zero leaves without the overhead of a loop. More...

void	ReadLeaves1Impl (TBuffer &b)
	Read one leaf without the overhead of a loop. More...

void	ReadLeaves2Impl (TBuffer &b)
	Read two leaves without the overhead of a loop. More...

void	ReadLeavesImpl (TBuffer &b)
	Loop on all leaves of this branch to read Basket buffer. More...

void	SetSkipZip (Bool_t skip=kTRUE)

Int_t	WriteBasket (TBasket *basket, Int_t where)

Protected Member Functions inherited from TObject
virtual void	DoError (int level, const char location, const char fmt, va_list va) const
	Interface to ErrorHandler (protected). More...

void	MakeZombie ()

Protected Attributes
TClassRef	fBranchClass
	! Reference to class definition in fClassName More...

TBranchElement *	fBranchCount
	pointer to primary branchcount branch More...

TBranchElement *	fBranchCount2
	pointer to secondary branchcount branch More...

Int_t	fBranchID
	! ID number assigned by a TRefTable. More...

Int_t *	fBranchOffset
	! Sub-Branch offsets with respect to current transient class More...

UInt_t	fCheckSum
	CheckSum of class. More...

TString	fClassName
	Class name of referenced object. More...

Version_t	fClassVersion
	Version number of class. More...

TClassRef	fClonesClass
	! Reference to class definition in fClonesName More...

TString	fClonesName
	Name of class in TClonesArray (if any) More...

TVirtualCollectionProxy *	fCollProxy
	! collection interface (if any) More...

TClassRef	fCurrentClass
	! Reference to current (transient) class definition More...

TStreamerInfoActions::TActionSequence *	fFillActionSequence
	! Set of actions to be executed to write the data to the basket. More...

Int_t	fID
	element serial number in fInfo More...

std::vector< Int_t >	fIDs
	! List of the serial number of all the StreamerInfo to be used. More...

TStreamerInfo *	fInfo
	! Pointer to StreamerInfo More...

Bool_t	fInit
	! Initialization flag for branch assignment More...

Bool_t	fInitOffsets
	! Initialization flag to not endlessly recalculate offsets More...

TVirtualCollectionIterators *	fIterators
	! holds the iterators when the branch is of fType==4. More...

Int_t	fMaximum
	Maximum entries for a TClonesArray or variable array. More...

Int_t	fNdata
	! Number of data in this branch More...

char *	fObject
	! Pointer to object at *fAddress More...

TVirtualArray *	fOnfileObject
	! Place holder for the onfile representation of data members. More...

TClassRef	fParentClass
	! Reference to class definition in fParentName More...

TString	fParentName
	Name of parent class. More...

TVirtualCollectionPtrIterators *	fPtrIterators
	! holds the iterators when the branch is of fType==4 and it is a split collection of pointers. More...

TStreamerInfoActions::TActionSequence *	fReadActionSequence
	! Set of actions to be executed to extract the data from the basket. More...

Int_t	fSTLtype
	! STL container type More...

Int_t	fStreamerType
	branch streamer type More...

TClassRef	fTargetClass
	! Reference to the target in-memory class More...

Int_t	fType
	branch type More...

TVirtualCollectionIterators *	fWriteIterators
	! holds the read (non-staging) iterators when the branch is of fType==4 and associative containers. More...

Protected Attributes inherited from TBranch
char *	fAddress
	! Address of 1st leaf (variable or object) More...

Int_t *	fBasketBytes
	[fMaxBaskets] Length of baskets on file More...

Long64_t *	fBasketEntry
	[fMaxBaskets] Table of first entry in each basket More...

TObjArray	fBaskets
	-> List of baskets of this branch More...

Long64_t *	fBasketSeek
	[fMaxBaskets] Addresses of baskets on file More...

Int_t	fBasketSize
	Initial Size of Basket Buffer. More...

TObjArray	fBranches
	-> List of Branches of this branch More...

TList *	fBrowsables
	! List of TVirtualBranchBrowsables used for Browse() More...

Int_t	fCompress
	Compression level and algorithm. More...

TBasket *	fCurrentBasket
	! Pointer to the current basket. More...

TDirectory *	fDirectory
	! Pointer to directory where this branch buffers are stored More...

Long64_t	fEntries
	Number of entries. More...

TBuffer *	fEntryBuffer
	! Buffer used to directly pass the content without streaming More...

Long64_t	fEntryNumber
	Current entry number (last one filled in this branch) More...

Int_t	fEntryOffsetLen
	Initial Length of fEntryOffset table in the basket buffers. More...

TString	fFileName
	Name of file where buffers are stored ("" if in same file as Tree header) More...

FillLeaves_t	fFillLeaves
	! Pointer to the FillLeaves implementation to use. More...

Long64_t	fFirstBasketEntry
	! First entry in the current basket. More...

Long64_t	fFirstEntry
	Number of the first entry in this branch. More...

TObjArray	fLeaves
	-> List of leaves of this branch More...

Int_t	fMaxBaskets
	Maximum number of Baskets so far. More...

TBranch *	fMother
	! Pointer to top-level parent branch in the tree. More...

Int_t	fNBaskets
	! Number of baskets in memory More...

Long64_t	fNextBasketEntry
	! Next entry that will requires us to go to the next basket More...

Int_t	fNleaves
	! Number of leaves More...

Int_t	fOffset
	Offset of this branch. More...

TBranch *	fParent
	! Pointer to parent branch. More...

Int_t	fReadBasket
	! Current basket number when reading More...

Long64_t	fReadEntry
	! Current entry number when reading More...

ReadLeaves_t	fReadLeaves
	! Pointer to the ReadLeaves implementation to use. More...

Bool_t	fSkipZip
	! After being read, the buffer will not be unzipped. More...

Int_t	fSplitLevel
	Branch split level. More...

Long64_t	fTotBytes
	Total number of bytes in all leaves before compression. More...

TBuffer *	fTransientBuffer
	! Pointer to the current transient buffer. More...

TTree *	fTree
	! Pointer to Tree header More...

Int_t	fWriteBasket
	Last basket number written. More...

Long64_t	fZipBytes
	Total number of bytes in all leaves after compression. More...

Protected Attributes inherited from TNamed
TString	fName

TString	fTitle

Protected Attributes inherited from TAttFill
Color_t	fFillColor
	Fill area color. More...

Style_t	fFillStyle
	Fill area style. More...

Private Member Functions
	TBranchElement (const TBranchElement &)

virtual Int_t	FillImpl (ROOT::Internal::TBranchIMTHelper *)
	Loop on all leaves of this branch to fill the basket buffer. More...

TBranchElement &	operator= (const TBranchElement &)

Static Private Member Functions
static void	SwitchContainer (TObjArray *)
	Modify the container type of the branches. More...

Friends
class	TTreeCloner

Additional Inherited Members
Static Public Member Functions inherited from TBranch
static void	ResetCount ()
	Static function resetting fgCount. More...

Static Public Member Functions inherited from TObject
static Long_t	GetDtorOnly ()
	Return destructor only flag. More...

static Bool_t	GetObjectStat ()
	Get status of object stat flag. More...

static void	SetDtorOnly (void *obj)
	Set destructor only flag. More...

static void	SetObjectStat (Bool_t stat)
	Turn on/off tracking of objects in the TObjectTable. More...

Static Protected Attributes inherited from TBranch
static Int_t	fgCount = 0
	! branch counter More...

#include <TBranchElement.h>

Inheritance diagram for TBranchElement:

[legend]

Member Enumeration Documentation

◆ anonymous enum

anonymous enum

protected

Enumerator
kBranchFolder
kDeleteObject	We are the owner of fObject.
kCache	Need to pushd/pop fOnfileObject.
kOwnOnfileObj	We are the owner of fOnfileObject.
kAddressSet	The addressing set have been called for this branch.
kMakeClass	This branch has been switched to using the MakeClass Mode.
kDecomposedObj	More explicit alias for kMakeClass.

Definition at line 51 of file TBranchElement.h.

◆ EBranchElementType

enum TBranchElement::EBranchElementType

Enumerator
kLeafNode
kBaseClassNode
kObjectNode
kClonesNode
kSTLNode
kClonesMemberNode
kSTLMemberNode

Definition at line 231 of file TBranchElement.h.

Constructor & Destructor Documentation

◆ TBranchElement() [1/8]

TBranchElement::TBranchElement ( const TBranchElement & )

private

◆ TBranchElement() [2/8]

TBranchElement::TBranchElement ( )

Default and I/O constructor.

Definition at line 131 of file TBranchElement.cxx.

◆ TBranchElement() [3/8]

TBranchElement::TBranchElement	(	TTree *	tree,
		const char *	bname,
		TStreamerInfo *	sinfo,
		Int_t	id,
		char *	pointer,
		Int_t	basketsize = `32000`,
		Int_t	splitlevel = `0`,
		Int_t	btype = `0`
	)

Constructor when the branch object is not a TClonesArray nor an STL container.

If splitlevel > 0 this branch in turn is split into sub-branches.

Definition at line 175 of file TBranchElement.cxx.

◆ TBranchElement() [4/8]

TBranchElement::TBranchElement	(	TTree *	tree,
		const char *	bname,
		TClonesArray *	clones,
		Int_t	basketsize = `32000`,
		Int_t	splitlevel = `0`,
		Int_t	compress = `-1`
	)

Constructor when the branch object is a TClonesArray.

If splitlevel > 0 this branch in turn is split into sub branches.

Definition at line 644 of file TBranchElement.cxx.

◆ TBranchElement() [5/8]

TBranchElement::TBranchElement	(	TTree *	tree,
		const char *	bname,
		TVirtualCollectionProxy *	cont,
		Int_t	basketsize = `32000`,
		Int_t	splitlevel = `0`,
		Int_t	compress = `-1`
	)

Constructor when the branch object is an STL collection.

If splitlevel > 0 this branch in turn is split into sub branches.

Definition at line 788 of file TBranchElement.cxx.

◆ TBranchElement() [6/8]

TBranchElement::TBranchElement	(	TBranch *	parent,
		const char *	bname,
		TStreamerInfo *	sinfo,
		Int_t	id,
		char *	pointer,
		Int_t	basketsize = `32000`,
		Int_t	splitlevel = `0`,
		Int_t	btype = `0`
	)

Constructor when the branch object is not a TClonesArray nor an STL container.

If splitlevel > 0 this branch in turn is split into sub-branches.

Definition at line 217 of file TBranchElement.cxx.

◆ TBranchElement() [7/8]

TBranchElement::TBranchElement	(	TBranch *	parent,
		const char *	bname,
		TClonesArray *	clones,
		Int_t	basketsize = `32000`,
		Int_t	splitlevel = `0`,
		Int_t	compress = `-1`
	)

Constructor when the branch object is a TClonesArray.

If splitlevel > 0 this branch in turn is split into sub branches.

Definition at line 668 of file TBranchElement.cxx.

◆ TBranchElement() [8/8]

TBranchElement::TBranchElement	(	TBranch *	parent,
		const char *	bname,
		TVirtualCollectionProxy *	cont,
		Int_t	basketsize = `32000`,
		Int_t	splitlevel = `0`,
		Int_t	compress = `-1`
	)

Constructor when the branch object is an STL collection.

If splitlevel > 0 this branch in turn is split into sub branches.

Definition at line 811 of file TBranchElement.cxx.

◆ ~TBranchElement()

TBranchElement::~TBranchElement ( )

virtual

Destructor.

Definition at line 940 of file TBranchElement.cxx.

Member Function Documentation

◆ Browse()

void TBranchElement::Browse ( TBrowser * b )

virtual

Browse the branch content.

Reimplemented from TBranch.

Definition at line 997 of file TBranchElement.cxx.

◆ BuildTitle()

void TBranchElement::BuildTitle ( const char * name )

protected

Set branch and leaf name and title in the case of a container sub-branch.

Definition at line 1109 of file TBranchElement.cxx.

◆ FillImpl()

Int_t TBranchElement::FillImpl ( ROOT::Internal::TBranchIMTHelper * imtHelper )

privatevirtual

Loop on all leaves of this branch to fill the basket buffer.

The function returns the number of bytes committed to the individual branches. If a write error occurs, the number of bytes returned is -1. If no data are written, because, e.g., the branch is disabled, the number of bytes returned is 0.

Note: We not not use any member functions from TLeafElement!

Reimplemented from TBranch.

Definition at line 1186 of file TBranchElement.cxx.

◆ FillLeavesAssociativeCollectionMember()

void TBranchElement::FillLeavesAssociativeCollectionMember ( TBuffer & b )

protected

Write leaves into i/o buffers for this branch.

Case of a data member within a collection (fType == 41).

Definition at line 1518 of file TBranchElement.cxx.

◆ FillLeavesClones()

void TBranchElement::FillLeavesClones ( TBuffer & b )

protected

Write leaves into i/o buffers for this branch.

Case of a TClonesArray (fType == 3).

Definition at line 1549 of file TBranchElement.cxx.

◆ FillLeavesClonesMember()

void TBranchElement::FillLeavesClonesMember ( TBuffer & b )

protected

Write leaves into i/o buffers for this branch.

Case of a data member within a TClonesArray (fType == 31).

Definition at line 1574 of file TBranchElement.cxx.

◆ FillLeavesCollection()

void TBranchElement::FillLeavesCollection ( TBuffer & b )

protected

Write leaves into i/o buffers for this branch.

Case of a collection (fType == 4).

Definition at line 1383 of file TBranchElement.cxx.

◆ FillLeavesCollectionMember()

void TBranchElement::FillLeavesCollectionMember ( TBuffer & b )

protected

Write leaves into i/o buffers for this branch.

Case of a data member within a collection (fType == 41).

Definition at line 1487 of file TBranchElement.cxx.

◆ FillLeavesCollectionSplitPtrMember()

void TBranchElement::FillLeavesCollectionSplitPtrMember ( TBuffer & b )

protected

Write leaves into i/o buffers for this branch.

Case of a data member within a collection (fType == 41).

Definition at line 1456 of file TBranchElement.cxx.

◆ FillLeavesCollectionSplitVectorPtrMember()

void TBranchElement::FillLeavesCollectionSplitVectorPtrMember ( TBuffer & b )

protected

Write leaves into i/o buffers for this branch.

Case of a data member within a collection (fType == 41).

Definition at line 1426 of file TBranchElement.cxx.

◆ FillLeavesCustomStreamer()

void TBranchElement::FillLeavesCustomStreamer ( TBuffer & b )

protected

Write leaves into i/o buffers for this branch.

Case of a non TObject, non collection class with a custom streamer

Definition at line 1603 of file TBranchElement.cxx.

◆ FillLeavesImpl()

void TBranchElement::FillLeavesImpl ( TBuffer & b )

protected

Unconfiguration Fill Leave function.

Definition at line 4147 of file TBranchElement.cxx.

◆ FillLeavesMakeClass()

void TBranchElement::FillLeavesMakeClass ( TBuffer & b )

protected

Write leaves into i/o buffers for this branch.

For the case where the branch is set in MakeClass mode (decomposed object).

Definition at line 1277 of file TBranchElement.cxx.

◆ FillLeavesMember()

void TBranchElement::FillLeavesMember ( TBuffer & b )

protected

Write leaves into i/o buffers for this branch.

For split-class branch, base class branch, data member branch, or top-level branch. which do not have a branch count and are not a counter.

Definition at line 1691 of file TBranchElement.cxx.

◆ FillLeavesMemberBranchCount()

void TBranchElement::FillLeavesMemberBranchCount ( TBuffer & b )

protected

Write leaves into i/o buffers for this branch.

For split-class branch, base class branch, data member branch, or top-level branch. which do have a branch count and are not a counter.

Definition at line 1633 of file TBranchElement.cxx.

◆ FillLeavesMemberCounter()

void TBranchElement::FillLeavesMemberCounter ( TBuffer & b )

protected

Write leaves into i/o buffers for this branch.

For split-class branch, base class branch, data member branch, or top-level branch. which do not have a branch count and are a counter.

Definition at line 1654 of file TBranchElement.cxx.

◆ FindBranch()

TBranch * TBranchElement::FindBranch ( const char * name )

virtual

Find the immediate sub-branch with passed name.

Reimplemented from TBranch.

Definition at line 1744 of file TBranchElement.cxx.

◆ FindLeaf()

TLeaf * TBranchElement::FindLeaf ( const char * name )

virtual

Find the leaf corresponding to the name 'searchname'.

Reimplemented from TBranch.

Definition at line 1829 of file TBranchElement.cxx.

◆ GetAddress()

char * TBranchElement::GetAddress ( ) const

virtual

Get the branch address.

If we are not owned by a MakeClass() tree:

If we are a top-level branch, return a pointer
to the pointer to our object.

If we are not a top-level branch, return a pointer to our object.

If we are owned by a MakeClass() tree:

Return a pointer to our object.

Reimplemented from TBranch.

Definition at line 1880 of file TBranchElement.cxx.

◆ GetBranchCount()

TBranchElement* TBranchElement::GetBranchCount ( ) const

inline

Definition at line 180 of file TBranchElement.h.

◆ GetBranchCount2()

TBranchElement* TBranchElement::GetBranchCount2 ( ) const

inline

Definition at line 181 of file TBranchElement.h.

◆ GetBranchOffset()

Int_t* TBranchElement::GetBranchOffset ( ) const

inline

Definition at line 182 of file TBranchElement.h.

◆ GetCheckSum()

UInt_t TBranchElement::GetCheckSum ( )

inline

Definition at line 183 of file TBranchElement.h.

◆ GetClass()

virtual TClass* TBranchElement::GetClass ( ) const

inlinevirtual

Definition at line 185 of file TBranchElement.h.

◆ GetClassName()

virtual const char* TBranchElement::GetClassName ( ) const

inlinevirtual

Return the name of the user class whose content is stored in this branch, if any.

If this branch was created using the 'leaflist' technique, this function returns an empty string.

Reimplemented from TBranch.

Definition at line 184 of file TBranchElement.h.

◆ GetClassVersion()

Int_t TBranchElement::GetClassVersion ( )

inline

Definition at line 206 of file TBranchElement.h.

◆ GetClonesName()

virtual const char* TBranchElement::GetClonesName ( ) const

inlinevirtual

Definition at line 186 of file TBranchElement.h.

◆ GetCollectionProxy()

TVirtualCollectionProxy * TBranchElement::GetCollectionProxy ( )

Return the collection proxy describing the branch content, if any.

Definition at line 2121 of file TBranchElement.cxx.

◆ GetCurrentClass()

TClass * TBranchElement::GetCurrentClass ( )

Return a pointer to the current type of the data member corresponding to branch element.

Definition at line 2188 of file TBranchElement.cxx.

◆ GetEntry()

Int_t TBranchElement::GetEntry	(	Long64_t	entry = `0`,
		Int_t	getall = `0`
	)

virtual

Read all branches of a BranchElement and return total number of bytes.

If entry = 0, then use current entry number + 1.
If entry < 0, then reset entry number to 0.

Returns the number of bytes read from the input buffer.

If entry does not exist, then returns 0.
If an I/O error occurs, then returns -1.

See IMPORTANT REMARKS in TTree::GetEntry.

Reimplemented from TBranch.

Definition at line 2259 of file TBranchElement.cxx.

◆ GetExpectedType()

Int_t TBranchElement::GetExpectedType	(	TClass *&	expectedClass,
		EDataType &	expectedType
	)

virtual

Fill expectedClass and expectedType with information on the data type of the object/values contained in this branch (and thus the type of pointers expected to be passed to Set[Branch]Address return 0 in case of success and > 0 in case of failure.

Reimplemented from TBranch.

Definition at line 2353 of file TBranchElement.cxx.

◆ GetIconName()

const char * TBranchElement::GetIconName ( ) const

virtual

Return icon name depending on type of branch element.

Reimplemented from TBranch.

Definition at line 2388 of file TBranchElement.cxx.

◆ GetID()

Int_t TBranchElement::GetID ( ) const

inline

Definition at line 192 of file TBranchElement.h.

◆ GetInfo()

TStreamerInfo * TBranchElement::GetInfo ( ) const

Get streamer info for the branch class.

Definition at line 989 of file TBranchElement.cxx.

◆ GetInfoImp()

TStreamerInfo * TBranchElement::GetInfoImp ( ) const

inlineprotected

Get streamer info for the branch class.

Definition at line 976 of file TBranchElement.cxx.

◆ GetMakeClass()

Bool_t TBranchElement::GetMakeClass ( ) const

virtual

Return whether this branch is in a mode where the object are decomposed or not (Also known as MakeClass mode).

Reimplemented from TBranch.

Definition at line 2401 of file TBranchElement.cxx.

◆ GetMaximum()

Int_t TBranchElement::GetMaximum ( ) const

virtual

Return maximum count value of the branchcount if any.

Definition at line 2409 of file TBranchElement.cxx.

◆ GetNdata()

Int_t TBranchElement::GetNdata ( ) const

inline

Definition at line 198 of file TBranchElement.h.

◆ GetObject()

char * TBranchElement::GetObject ( ) const

Return a pointer to our object.

Definition at line 2420 of file TBranchElement.cxx.

◆ GetParentClass()

TClass * TBranchElement::GetParentClass ( )

protected

Return a pointer to the parent class of the branch element.

Definition at line 2429 of file TBranchElement.cxx.

◆ GetParentName()

virtual const char* TBranchElement::GetParentName ( ) const

inlinevirtual

Definition at line 196 of file TBranchElement.h.

◆ GetStreamerType()

Int_t TBranchElement::GetStreamerType ( ) const

inline

Definition at line 200 of file TBranchElement.h.

◆ GetTargetClass()

virtual TClass* TBranchElement::GetTargetClass ( )

inlinevirtual

Definition at line 201 of file TBranchElement.h.

◆ GetType()

Int_t TBranchElement::GetType ( ) const

inline

Definition at line 199 of file TBranchElement.h.

◆ GetTypedValue()

template<typename T >

T TBranchElement::GetTypedValue	(	Int_t	i,
		Int_t	len,
		Bool_t	subarr = `kFALSE`
	)		const

Definition at line 2487 of file TBranchElement.cxx.

◆ GetTypeName()

const char * TBranchElement::GetTypeName ( ) const

virtual

Return type name of element in the branch.

Definition at line 2437 of file TBranchElement.cxx.

◆ GetValue()

Double_t TBranchElement::GetValue	(	Int_t	i,
		Int_t	len,
		Bool_t	subarr = `kFALSE`
	)		const

inline

Definition at line 203 of file TBranchElement.h.

◆ GetValuePointer()

void * TBranchElement::GetValuePointer ( ) const

virtual

Returns pointer to first data element of this branch.

Currently used only for members of type character.

Definition at line 2589 of file TBranchElement.cxx.

◆ Init() [1/3]

void TBranchElement::Init	(	TTree *	tree,
		TBranch *	parent,
		const char *	bname,
		TStreamerInfo *	sinfo,
		Int_t	id,
		char *	pointer,
		Int_t	basketsize = `32000`,
		Int_t	splitlevel = `0`,
		Int_t	btype = `0`
	)

protected

Init when the branch object is not a TClonesArray nor an STL container.

If splitlevel > 0 this branch in turn is split into sub-branches.

Definition at line 259 of file TBranchElement.cxx.

◆ Init() [2/3]

void TBranchElement::Init	(	TTree *	tree,
		TBranch *	parent,
		const char *	bname,
		TClonesArray *	clones,
		Int_t	basketsize = `32000`,
		Int_t	splitlevel = `0`,
		Int_t	compress = `-1`
	)

protected

Init when the branch object is a TClonesArray.

If splitlevel > 0 this branch in turn is split into sub branches.

Definition at line 692 of file TBranchElement.cxx.

◆ Init() [3/3]

void TBranchElement::Init	(	TTree *	tree,
		TBranch *	parent,
		const char *	bname,
		TVirtualCollectionProxy *	cont,
		Int_t	basketsize = `32000`,
		Int_t	splitlevel = `0`,
		Int_t	compress = `-1`
	)

protected

Init when the branch object is an STL collection.

If splitlevel > 0 this branch in turn is split into sub branches.

Definition at line 834 of file TBranchElement.cxx.

◆ InitializeOffsets()

void TBranchElement::InitializeOffsets ( )

protectedvirtual

Initialize the base class subobjects offsets of our sub-branches and set fOffset if we are a container sub-branch.

Note: The offsets are zero for data members so that when SetAddress recursively sets their address, they will get the same address as their containing class because i/o is based on streamer info offsets from the addresss of the containing class.

Offsets are non-zero for base-class sub-branches that are not the leftmost direct base class. They are laid out in memory sequentially and only the leftmost direct base class has the same address as the derived class. The streamer offsets need to be added to the address of the base class subobject which is not the same as the address of the derived class for the non-leftmost direct base classes.

Definition at line 2672 of file TBranchElement.cxx.

◆ InitInfo()

void TBranchElement::InitInfo ( )

protectedvirtual

Init the streamer info for the branch class, try to compensate for class code unload/reload and schema evolution.

Definition at line 1890 of file TBranchElement.cxx.

◆ IsBranchFolder()

Bool_t TBranchElement::IsBranchFolder ( ) const

inline

Definition at line 207 of file TBranchElement.h.

◆ IsFolder()

Bool_t TBranchElement::IsFolder ( ) const

virtual

Return kTRUE if more than one leaf, kFALSE otherwise.

Reimplemented from TBranch.

Definition at line 3272 of file TBranchElement.cxx.

◆ IsMissingCollection()

Bool_t TBranchElement::IsMissingCollection ( ) const

protected

Detect a collection written using a zero pointer in old versions of root.

In versions of ROOT older than 4.00/03, if a collection (TClonesArray or STL container) was split but the pointer to the collection was zeroed out, nothing was saved. Hence there is no easy way to detect the case. In newer versions, a zero is written so that a 'missing' collection appears to be an empty collection.

Definition at line 3290 of file TBranchElement.cxx.

◆ IsObjectOwner()

virtual Bool_t TBranchElement::IsObjectOwner ( ) const

inlinevirtual

Definition at line 209 of file TBranchElement.h.

◆ Notify()

virtual Bool_t TBranchElement::Notify ( )

inlinevirtual

This method must be overridden to handle object notification.

Reimplemented from TObject.

Definition at line 210 of file TBranchElement.h.

◆ operator=()

TBranchElement& TBranchElement::operator= ( const TBranchElement & )

private

◆ Print()

void TBranchElement::Print ( Option_t * option = "" ) const

virtual

Print branch parameters.

Reimplemented from TBranch.

Definition at line 3330 of file TBranchElement.cxx.

◆ PrintValue()

void TBranchElement::PrintValue ( Int_t i ) const

Prints values of leaves.

Definition at line 3402 of file TBranchElement.cxx.

◆ ReadLeavesClones()

void TBranchElement::ReadLeavesClones ( TBuffer & b )

protected

Read leaves into i/o buffers for this branch.

Case of a TClonesArray (fType == 3).

Definition at line 3945 of file TBranchElement.cxx.

◆ ReadLeavesClonesMember()

void TBranchElement::ReadLeavesClonesMember ( TBuffer & b )

protected

Read leaves into i/o buffers for this branch.

Case of a data member within a TClonesArray (fType == 31).

Definition at line 3982 of file TBranchElement.cxx.

◆ ReadLeavesCollection()

void TBranchElement::ReadLeavesCollection ( TBuffer & b )

protected

Read leaves into i/o buffers for this branch.

Case of a collection (fType == 4).

Definition at line 3741 of file TBranchElement.cxx.

◆ ReadLeavesCollectionMember()

void TBranchElement::ReadLeavesCollectionMember ( TBuffer & b )

protected

Read leaves into i/o buffers for this branch.

Case of a data member within a collection (fType == 41).

Definition at line 3912 of file TBranchElement.cxx.

◆ ReadLeavesCollectionSplitPtrMember()

void TBranchElement::ReadLeavesCollectionSplitPtrMember ( TBuffer & b )

protected

Read leaves into i/o buffers for this branch.

Case of a data member within a collection (fType == 41).

Definition at line 3839 of file TBranchElement.cxx.

◆ ReadLeavesCollectionSplitVectorPtrMember()

void TBranchElement::ReadLeavesCollectionSplitVectorPtrMember ( TBuffer & b )

protected

Read leaves into i/o buffers for this branch.

Case of a data member within a collection (fType == 41).

Definition at line 3881 of file TBranchElement.cxx.

◆ ReadLeavesCustomStreamer()

void TBranchElement::ReadLeavesCustomStreamer ( TBuffer & b )

protected

Read leaves into i/o buffers for this branch.

Non TObject, Non collection classes with a custom streamer.

Definition at line 4130 of file TBranchElement.cxx.

◆ ReadLeavesImpl()

void TBranchElement::ReadLeavesImpl ( TBuffer & b )

protected

Unconfiguration Read Leave function.

Definition at line 3488 of file TBranchElement.cxx.

◆ ReadLeavesMakeClass()

void TBranchElement::ReadLeavesMakeClass ( TBuffer & b )

protected

Read leaves into i/o buffers for this branch.

For the case where the branch is set in MakeClass mode (decomposed object).

Definition at line 3497 of file TBranchElement.cxx.

◆ ReadLeavesMember()

void TBranchElement::ReadLeavesMember ( TBuffer & b )

protected

Read leaves into i/o buffers for this branch.

For split-class branch, base class branch, data member branch, or top-level branch. which do not have a branch count and are not a counter.

Definition at line 4019 of file TBranchElement.cxx.

◆ ReadLeavesMemberBranchCount()

void TBranchElement::ReadLeavesMemberBranchCount ( TBuffer & b )

protected

Read leaves into i/o buffers for this branch.

For split-class branch, base class branch, data member branch, or top-level branch. which do have a branch count and are not a counter.

Definition at line 4057 of file TBranchElement.cxx.

◆ ReadLeavesMemberCounter()

void TBranchElement::ReadLeavesMemberCounter ( TBuffer & b )

protected

Read leaves into i/o buffers for this branch.

For split-class branch, base class branch, data member branch, or top-level branch. which do not have a branch count and are a counter.

Definition at line 4094 of file TBranchElement.cxx.

◆ ReleaseObject()

void TBranchElement::ReleaseObject ( )

protected

Delete any object we may have allocated on a previous call to SetAddress.

Definition at line 4155 of file TBranchElement.cxx.

◆ Reset()

void TBranchElement::Reset ( Option_t * option = "" )

virtual

Reset a Branch.

Existing i/o buffers are deleted. Entries, max and min are reset.

Reimplemented from TBranch.

Definition at line 4235 of file TBranchElement.cxx.

◆ ResetAddress()

void TBranchElement::ResetAddress ( )

virtual

Set branch address to zero and free all allocated memory.

Reimplemented from TBranch.

Definition at line 4263 of file TBranchElement.cxx.

◆ ResetAfterMerge()

void TBranchElement::ResetAfterMerge ( TFileMergeInfo * info )

virtual

Reset a Branch after a Merge operation (drop data but keep customizations)

Reimplemented from TBranch.

Definition at line 4250 of file TBranchElement.cxx.

◆ ResetDeleteObject()

void TBranchElement::ResetDeleteObject ( )

virtual

Release ownership of any allocated objects.

Note: This interface was added so that clone trees could be told they do not own the allocated objects.

Definition at line 4297 of file TBranchElement.cxx.

◆ SetAddress()

void TBranchElement::SetAddress ( void * addr )

virtual

Point this branch at an object.

For a sub-branch, addr is a pointer to the branch object.

For a top-level branch the meaning of addr is as follows:

If addr is zero, then we allocate a branch object internally and the branch is the owner of the allocated object, not the caller. However the caller may obtain a pointer to the branch object with GetObject().

Example:

branch->SetAddress(0);
Event* event = branch->GetObject();
... Do some work.

If addr is not zero, but the pointer addr points at is zero, then we allocate a branch object and set the passed pointer to point at the allocated object. The caller owns the allocated object and is responsible for deleting it when it is no longer needed.

Example:

Event* event = 0;
branch->SetAddress(&event);
... Do some work.
delete event;
event = 0;

If addr is not zero and the pointer addr points at is also not zero, then the caller has allocated a branch object and is asking us to use it. The caller owns it and must delete it when it is no longer needed.

Example:

Event* event = new Event();
branch->SetAddress(&event);
... Do some work.
delete event;
event = 0;

These rules affect users of TTree::Branch(), TTree::SetBranchAddress(), and TChain::SetBranchAddress() as well because those routines call this one.

An example of a tree with branches with objects allocated and owned by us:

TFile* f1 = new TFile("myfile_original.root");
TTree* t1 = (TTree*) f->Get("MyTree");
TFile* f2 = new TFile("myfile_copy.root", "recreate");
TTree* t2 = t1->Clone(0);
for (Int_t i = 0; i < 10; ++i) {
   t1->GetEntry(i);
   t2->Fill();
}
t2->Write()
delete f2;
f2 = 0;
delete f1;
f1 = 0;

An example of a branch with an object allocated by us, but owned by the caller:

TFile* f = new TFile("myfile.root", "recreate");
TTree* t = new TTree("t", "A test tree.")
Event* event = 0;
TBranchElement* br = t->Branch("event.", &event);
for (Int_t i = 0; i < 10; ++i) {
   ... Fill event with meaningful data in some way.
   t->Fill();
}
t->Write();
delete event;
event = 0;
delete f;
f = 0;

Notice that the only difference between this example and the following example is that the event pointer is zero when the branch is created.

An example of a branch with an object allocated and owned by the caller:

TFile* f = new TFile("myfile.root", "recreate");
TTree* t = new TTree("t", "A test tree.")
Event* event = new Event();
TBranchElement* br = t->Branch("event.", &event);
for (Int_t i = 0; i < 10; ++i) {
   ... Fill event with meaningful data in some way.
   t->Fill();
}
t->Write();
delete event;
event = 0;
delete f;
f = 0;

If AutoDelete is on (see TBranch::SetAutoDelete), the top level objet will be deleted and recreate each time an entry is read, whether or not the TTree owns the object.

Reimplemented from TBranch.

Definition at line 4418 of file TBranchElement.cxx.

◆ SetBasketSize()

void TBranchElement::SetBasketSize ( Int_t buffsize )

virtual

Reset the basket size for all sub-branches of this branch element.

Reimplemented from TBranch.

Definition at line 4952 of file TBranchElement.cxx.

◆ SetBranchCount()

void TBranchElement::SetBranchCount ( TBranchElement * bre )

protected

Set the branch counter for this branch.

Definition at line 4965 of file TBranchElement.cxx.

◆ SetBranchCount2()

void TBranchElement::SetBranchCount2 ( TBranchElement * bre )

inlineprotected

Definition at line 125 of file TBranchElement.h.

◆ SetBranchFolder()

virtual void TBranchElement::SetBranchFolder ( )

inlinevirtual

Definition at line 221 of file TBranchElement.h.

◆ SetClassName()

virtual void TBranchElement::SetClassName ( const char * name )

inlinevirtual

Definition at line 222 of file TBranchElement.h.

◆ SetFillActionSequence()

void TBranchElement::SetFillActionSequence ( )

protected

Set the sequence of actions needed to write the data out from the buffer.

Definition at line 5139 of file TBranchElement.cxx.

◆ SetFillLeavesPtr()

void TBranchElement::SetFillLeavesPtr ( )

protected

Set the FillLeaves pointer to execute the expected operations.

Definition at line 5186 of file TBranchElement.cxx.

◆ SetMakeClass()

Bool_t TBranchElement::SetMakeClass ( Bool_t decomposeObj = kTRUE )

virtual

Set the branch in a mode where the object are decomposed (Also known as MakeClass mode).

Return whether the setting was possible (it is not possible for TBranch and TBranchObject).

Reimplemented from TBranch.

Definition at line 4990 of file TBranchElement.cxx.

◆ SetObject()

void TBranchElement::SetObject ( void * objadd )

virtual

Set object this branch is pointing to.

Reimplemented from TBranch.

Definition at line 5011 of file TBranchElement.cxx.

◆ SetOffset()

void TBranchElement::SetOffset ( Int_t offset )

virtual

Set offset of the object (to which the data member represented by this branch belongs) inside its containing object (if any).

Reimplemented from TBranch.

Definition at line 5024 of file TBranchElement.cxx.

◆ SetParentClass()

void TBranchElement::SetParentClass ( TClass * clparent )

inline

Definition at line 251 of file TBranchElement.h.

◆ SetParentName()

virtual void TBranchElement::SetParentName ( const char * name )

inlinevirtual

Definition at line 225 of file TBranchElement.h.

◆ SetReadActionSequence()

void TBranchElement::SetReadActionSequence ( )

protected

Set the sequence of actions needed to read the data out of the buffer.

Definition at line 5041 of file TBranchElement.cxx.

◆ SetReadLeavesPtr()

void TBranchElement::SetReadLeavesPtr ( )

protected

Set the ReadLeaves pointer to execute the expected operations.

Definition at line 5087 of file TBranchElement.cxx.

◆ SetTargetClass()

void TBranchElement::SetTargetClass ( const char * name )

virtual

Set the name of the class of the in-memory object into which the data will loaded.

Definition at line 5230 of file TBranchElement.cxx.

◆ SetType()

virtual void TBranchElement::SetType ( Int_t btype )

inlinevirtual

Definition at line 228 of file TBranchElement.h.

◆ SetupAddresses()

void TBranchElement::SetupAddresses ( )

virtual

If the branch address is not set, we set all addresses starting with the top level parent branch.

This is required to be done in order for GetOffset to be correct and for GetEntry to run.

Reimplemented from TBranch.

Definition at line 5267 of file TBranchElement.cxx.

◆ SetupAddressesImpl()

void TBranchElement::SetupAddressesImpl ( )

protected

If the branch address is not set, we set all addresses starting with the top level parent branch.

This is required to be done in order for GetOffset to be correct and for GetEntry to run.

Definition at line 5284 of file TBranchElement.cxx.

◆ SwitchContainer()

void TBranchElement::SwitchContainer ( TObjArray * branches )

staticprivate

Modify the container type of the branches.

Definition at line 83 of file TBranchElement.cxx.

◆ Unroll()

Int_t TBranchElement::Unroll	(	const char *	name,
		TClass *	clParent,
		TClass *	cl,
		char *	ptr,
		Int_t	basketsize,
		Int_t	splitlevel,
		Int_t	btype
	)

protected

Split class cl into sub-branches of this branch.

Create a sub-branch of this branch for each non-empty, non-abstract base class of cl (unless we are a sub-branch of a TClonesArray or an STL container, in which case we do not create a sub-branch), and for each non-split data member of cl.

Note: We do not create sub-branches for base classes of cl if we are a sub-branch of a TClonesArray or an STL container.

Note: We do not create sub-branches for data members which have a class type and which we are splitting.

Note: The above rules imply that the branch heirarchy increases in depth only for base classes of cl (unless we are inside of a TClonesArray or STL container, in which case the depth does not increase, the base class is elided) and for TClonesArray or STL container data members (which have one additional level of sub-branches). The only other way the depth increases is when the top-level branch has a split class data member, in that case the constructor will create a sub-branch for it. In other words, the interior nodes of the branch tree are all either: base class nodes; split class nodes which are direct sub-branches of top-level nodes (created by TClass::Bronch usually); or TClonesArray or STL container master nodes.

Note: The exception to the above is for the top-level branches, Tree::Bronch creates nodes for everything in that case, except for a TObject base class of a class which has the can ignore tobject streamer flag set.

Definition at line 5479 of file TBranchElement.cxx.

◆ UpdateFile()

void TBranchElement::UpdateFile ( )

virtual

Refresh the value of fDirectory (i.e.

where this branch writes/reads its buffers) with the current value of fTree->GetCurrentFile unless this branch has been redirected to a different file. Also update the sub-branches.

Reimplemented from TBranch.

Definition at line 5683 of file TBranchElement.cxx.

◆ ValidateAddress()

void TBranchElement::ValidateAddress ( ) const

inlineprotected

Definition at line 257 of file TBranchElement.h.

Friends And Related Function Documentation

◆ TTreeCloner

friend class TTreeCloner

friend

Definition at line 47 of file TBranchElement.h.

Member Data Documentation

◆ fBranchClass

TClassRef TBranchElement::fBranchClass

protected

! Reference to class definition in fClassName

Definition at line 97 of file TBranchElement.h.

◆ fBranchCount

TBranchElement* TBranchElement::fBranchCount

protected

pointer to primary branchcount branch

Definition at line 87 of file TBranchElement.h.

◆ fBranchCount2

TBranchElement* TBranchElement::fBranchCount2

protected

pointer to secondary branchcount branch

Definition at line 88 of file TBranchElement.h.

◆ fBranchID

Int_t TBranchElement::fBranchID

protected

! ID number assigned by a TRefTable.

Definition at line 100 of file TBranchElement.h.

◆ fBranchOffset

Int_t* TBranchElement::fBranchOffset

protected

! Sub-Branch offsets with respect to current transient class

Definition at line 99 of file TBranchElement.h.

◆ fCheckSum

UInt_t TBranchElement::fCheckSum

protected

CheckSum of class.

Definition at line 79 of file TBranchElement.h.

◆ fClassName

TString TBranchElement::fClassName

protected

Class name of referenced object.

Definition at line 75 of file TBranchElement.h.

◆ fClassVersion

Version_t TBranchElement::fClassVersion

protected

Version number of class.

Definition at line 80 of file TBranchElement.h.

◆ fClonesClass

TClassRef TBranchElement::fClonesClass

protected

! Reference to class definition in fClonesName

Definition at line 98 of file TBranchElement.h.

◆ fClonesName

TString TBranchElement::fClonesName

protected

Name of class in TClonesArray (if any)

Definition at line 77 of file TBranchElement.h.

◆ fCollProxy

TVirtualCollectionProxy* TBranchElement::fCollProxy

protected

! collection interface (if any)

Definition at line 78 of file TBranchElement.h.

◆ fCurrentClass

TClassRef TBranchElement::fCurrentClass

protected

! Reference to current (transient) class definition

Definition at line 95 of file TBranchElement.h.

◆ fFillActionSequence

TStreamerInfoActions::TActionSequence* TBranchElement::fFillActionSequence

protected

! Set of actions to be executed to write the data to the basket.

Definition at line 103 of file TBranchElement.h.

◆ fID

Int_t TBranchElement::fID

protected

element serial number in fInfo

Definition at line 81 of file TBranchElement.h.

◆ fIDs

std::vector<Int_t> TBranchElement::fIDs

protected

! List of the serial number of all the StreamerInfo to be used.

Definition at line 101 of file TBranchElement.h.

◆ fInfo

TStreamerInfo* TBranchElement::fInfo

protected

! Pointer to StreamerInfo

Definition at line 89 of file TBranchElement.h.

◆ fInit

Bool_t TBranchElement::fInit

protected

! Initialization flag for branch assignment

Definition at line 92 of file TBranchElement.h.

◆ fInitOffsets

Bool_t TBranchElement::fInitOffsets

protected

! Initialization flag to not endlessly recalculate offsets

Definition at line 93 of file TBranchElement.h.

◆ fIterators

TVirtualCollectionIterators* TBranchElement::fIterators

protected

! holds the iterators when the branch is of fType==4.

Definition at line 104 of file TBranchElement.h.

◆ fMaximum

Int_t TBranchElement::fMaximum

protected

Maximum entries for a TClonesArray or variable array.

Definition at line 84 of file TBranchElement.h.

◆ fNdata

Int_t TBranchElement::fNdata

protected

! Number of data in this branch

Definition at line 86 of file TBranchElement.h.

◆ fObject

char* TBranchElement::fObject

protected

! Pointer to object at *fAddress

Definition at line 90 of file TBranchElement.h.

◆ fOnfileObject

TVirtualArray* TBranchElement::fOnfileObject

protected

! Place holder for the onfile representation of data members.

Definition at line 91 of file TBranchElement.h.

◆ fParentClass

TClassRef TBranchElement::fParentClass

protected

! Reference to class definition in fParentName

Definition at line 96 of file TBranchElement.h.

◆ fParentName

TString TBranchElement::fParentName

protected

Name of parent class.

Definition at line 76 of file TBranchElement.h.

◆ fPtrIterators

TVirtualCollectionPtrIterators* TBranchElement::fPtrIterators

protected

! holds the iterators when the branch is of fType==4 and it is a split collection of pointers.

Definition at line 106 of file TBranchElement.h.

◆ fReadActionSequence

TStreamerInfoActions::TActionSequence* TBranchElement::fReadActionSequence

protected

! Set of actions to be executed to extract the data from the basket.

Definition at line 102 of file TBranchElement.h.

◆ fSTLtype

Int_t TBranchElement::fSTLtype

protected

! STL container type

Definition at line 85 of file TBranchElement.h.

◆ fStreamerType

Int_t TBranchElement::fStreamerType

protected

branch streamer type

Definition at line 83 of file TBranchElement.h.

◆ fTargetClass

TClassRef TBranchElement::fTargetClass

protected

! Reference to the target in-memory class

Definition at line 94 of file TBranchElement.h.

◆ fType

Int_t TBranchElement::fType

protected

branch type

Definition at line 82 of file TBranchElement.h.

◆ fWriteIterators

TVirtualCollectionIterators* TBranchElement::fWriteIterators

protected

! holds the read (non-staging) iterators when the branch is of fType==4 and associative containers.

Definition at line 105 of file TBranchElement.h.

The documentation for this class was generated from the following files:

tree/tree/inc/TBranchElement.h
tree/tree/src/TBranchElement.cxx

Public Types

Public Member Functions

Protected Types

Protected Member Functions

Protected Attributes

Private Member Functions

Static Private Member Functions

Friends

Additional Inherited Members

Member Enumeration Documentation

◆ anonymous enum

◆ EBranchElementType

Constructor & Destructor Documentation

◆ TBranchElement() [1/8]

◆ TBranchElement() [2/8]

◆ TBranchElement() [3/8]

◆ TBranchElement() [4/8]

◆ TBranchElement() [5/8]

◆ TBranchElement() [6/8]

◆ TBranchElement() [7/8]

◆ TBranchElement() [8/8]

◆ ~TBranchElement()

Member Function Documentation

◆ Browse()

◆ BuildTitle()

◆ FillImpl()

◆ FillLeavesAssociativeCollectionMember()

◆ FillLeavesClones()

◆ FillLeavesClonesMember()

◆ FillLeavesCollection()

◆ FillLeavesCollectionMember()

◆ FillLeavesCollectionSplitPtrMember()

◆ FillLeavesCollectionSplitVectorPtrMember()

◆ FillLeavesCustomStreamer()

◆ FillLeavesImpl()

◆ FillLeavesMakeClass()

◆ FillLeavesMember()

◆ FillLeavesMemberBranchCount()

◆ FillLeavesMemberCounter()

◆ FindBranch()

◆ FindLeaf()

◆ GetAddress()

◆ GetBranchCount()

◆ GetBranchCount2()

◆ GetBranchOffset()

◆ GetCheckSum()

◆ GetClass()

◆ GetClassName()

◆ GetClassVersion()

◆ GetClonesName()

◆ GetCollectionProxy()

◆ GetCurrentClass()

◆ GetEntry()

◆ GetExpectedType()

◆ GetIconName()

◆ GetID()

◆ GetInfo()

◆ GetInfoImp()

◆ GetMakeClass()

◆ GetMaximum()

◆ GetNdata()

◆ GetObject()

◆ GetParentClass()

◆ GetParentName()

◆ GetStreamerType()

◆ GetTargetClass()

◆ GetType()

◆ GetTypedValue()

◆ GetTypeName()

◆ GetValue()

◆ GetValuePointer()

◆ Init() [1/3]

◆ Init() [2/3]

◆ Init() [3/3]

◆ InitializeOffsets()

◆ InitInfo()

◆ IsBranchFolder()

◆ IsFolder()

◆ IsMissingCollection()

◆ IsObjectOwner()