The class is derived from the ROOT class TSelector.

For more information on the TSelector framework see $ROOTSYS/README/README.SELECTOR or the ROOT User Manual.

The following methods are defined in this file:

Begin(): called everytime a loop on the tree starts, a convenient place to create your histograms.
SlaveBegin(): called after Begin(), when on PROOF called only on the slave servers.
Process(): called for each event, in this function you decide what to read and fill your histograms.
SlaveTerminate: called at the end of the loop on the tree, when on PROOF called only on the slave servers.
Terminate(): called at the end of the loop on the tree, a convenient place to draw/fit your histograms.

To use this file, try the following session on your Tree T:

Root > T->Process("TSelectorEntries.C")
Root > T->Process("TSelectorEntries.C","some options")
Root > T->Process("TSelectorEntries.C+")

Definition at line 34 of file TSelectorEntries.h.

Public Member Functions
	TSelectorEntries (const char *selection)
	Constructor.

	TSelectorEntries (TTree tree=0, const char selection=0)
	Default, constructor.

virtual	~TSelectorEntries ()
	Destructor.

virtual void	Begin (TTree *tree)
	The Begin() function is called at the start of the query.

virtual Int_t	GetEntry (Long64_t entry, Int_t getall=0)
	Read entry.

virtual TList *	GetOutputList () const

virtual Long64_t	GetSelectedRows () const

virtual void	Init (TTree *tree)
	The Init() function is called when the selector needs to initialize a new tree or chain.

virtual Bool_t	Notify ()
	This function is called at the first entry of a new tree in a chain.

virtual Bool_t	Process (Long64_t entry)
	The Process() function is called for each entry in the tree (or possibly keyed object in the case of PROOF) to be processed.

virtual void	SetObject (TObject *obj)

virtual void	SetOption (const char *option)

virtual void	SetSelection (const char *selection)
	Set the selection expression.

virtual void	SlaveBegin (TTree *tree)
	The SlaveBegin() function is called after the Begin() function.

virtual void	SlaveTerminate ()
	The SlaveTerminate() function is called after all entries or objects have been processed.

virtual void	Terminate ()
	The Terminate() function is the last function to be called during a query.

virtual Int_t	Version () const

Public Member Functions inherited from TSelector
	TSelector ()
	Default selector ctor.

virtual	~TSelector ()
	Selector destructor.

virtual void	Abort (const char *why, EAbort what=kAbortProcess)
	Abort processing.

virtual EAbort	GetAbort () const

virtual TList *	GetInputList () const

virtual const char *	GetOption () const

virtual Long64_t	GetStatus () const

virtual void	ImportOutput (TList *output)
	Imports the content of 'output' in the internal output list.

virtual Bool_t	ProcessCut (Long64_t)

virtual void	ProcessFill (Long64_t)

virtual void	ResetAbort ()

virtual void	SetInputList (TList *input)

virtual void	SetStatus (Long64_t status)

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

	TObject (const TObject &object)
	TObject copy ctor.

virtual	~TObject ()
	TObject destructor.

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

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

virtual void	Browse (TBrowser *b)
	Browse object. May be overridden for another default action.

ULong_t	CheckedHash ()
	Check and record whether this class has a consistent Hash/RecursiveRemove setup (*) and then return the regular Hash value for this object.

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

virtual void	Clear (Option_t *="")

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

virtual Int_t	Compare (const TObject *obj) const
	Compare abstract method.

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

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

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

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

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

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

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

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

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.

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

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

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

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

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

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

virtual const char *	GetIconName () const
	Returns mime type name of object.

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

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

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

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

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

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

Bool_t	HasInconsistentHash () const
	Return true is the type of this object is known to have an inconsistent setup for Hash and RecursiveRemove (i.e.

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

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

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

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

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).

virtual Bool_t	IsFolder () const
	Returns kTRUE in case object contains browsable objects (like containers or lists of other objects).

R__ALWAYS_INLINE Bool_t	IsOnHeap () const

virtual Bool_t	IsSortable () const

R__ALWAYS_INLINE Bool_t	IsZombie () const

virtual void	ls (Option_t *option="") const
	The ls function lists the contents of a class on stdout.

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).

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

void	operator delete (void *ptr)
	Operator delete.

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

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.

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

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

virtual void	Print (Option_t *option="") const
	This method must be overridden when a class wants to print itself.

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

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

void	ResetBit (UInt_t f)

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

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

void	SetBit (UInt_t f)

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

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

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

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

R__ALWAYS_INLINE 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.

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

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

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

Public Attributes
TTree *	fChain

TTreeFormula *	fSelect
	pointer to the analyzed TTree or TChain

Long64_t	fSelectedRows

Bool_t	fSelectMultiple

Private Attributes
Bool_t	fOwnInput

Additional Inherited Members
Public Types inherited from TSelector
enum	EAbort { kContinue , kAbortProcess , kAbortFile }

Public Types inherited from TObject
enum	{ kIsOnHeap = 0x01000000 , kNotDeleted = 0x02000000 , kZombie = 0x04000000 , kInconsistent = 0x08000000 , kBitMask = 0x00ffffff }

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

enum	EDeprecatedStatusBits { kObjInCanvas = BIT(3) }

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

Static Public Member Functions inherited from TSelector
static TSelector *	GetSelector (const char *filename)
	The code in filename is loaded (interpreted or compiled, see below), filename must contain a valid class implementation derived from TSelector.

static Bool_t	IsStandardDraw (const char *selec)
	Find out if this is a standard selection used for Draw actions (either TSelectorDraw, TProofDraw or deriving from them).

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

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

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

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

Protected Types inherited from TObject
enum	{ kOnlyPrepStep = BIT(3) }

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).

void	MakeZombie ()

Protected Attributes inherited from TSelector
EAbort	fAbort
	Abort status.

TList *	fInput
	List of objects available during processing.

TObject *	fObject
	! Current object if processing object (vs. TTree)

TString	fOption
	Option given to TTree::Process.

TSelectorList *	fOutput
	! List of objects created during processing

Long64_t	fStatus
	Selector status.

#include <TSelectorEntries.h>

Inheritance diagram for TSelectorEntries:

[legend]

Constructor & Destructor Documentation

◆ TSelectorEntries() [1/2]

TSelectorEntries::TSelectorEntries	(	TTree *	tree = `0`,
		const char *	selection = `0`
	)

Default, constructor.

Definition at line 46 of file TSelectorEntries.cxx.

◆ TSelectorEntries() [2/2]

TSelectorEntries::TSelectorEntries ( const char * selection )

Constructor.

Definition at line 57 of file TSelectorEntries.cxx.

◆ ~TSelectorEntries()

TSelectorEntries::~TSelectorEntries ( )

virtual

Destructor.

Definition at line 66 of file TSelectorEntries.cxx.

Member Function Documentation

◆ Begin()

void TSelectorEntries::Begin ( TTree * tree )

virtual

The Begin() function is called at the start of the query.

When running with PROOF Begin() is only called on the client. The tree argument is deprecated (on PROOF 0 is passed).

Reimplemented from TSelector.

Definition at line 81 of file TSelectorEntries.cxx.

◆ GetEntry()

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

virtual

Read entry.

Reimplemented from TSelector.

Definition at line 115 of file TSelectorEntries.cxx.

◆ GetOutputList()

virtual TList * TSelectorEntries::GetOutputList ( ) const

inlinevirtual

Reimplemented from TSelector.

Definition at line 56 of file TSelectorEntries.h.

◆ GetSelectedRows()

virtual Long64_t TSelectorEntries::GetSelectedRows ( ) const

inlinevirtual

Definition at line 52 of file TSelectorEntries.h.

◆ Init()

void TSelectorEntries::Init ( TTree * tree )

virtual

The Init() function is called when the selector needs to initialize a new tree or chain.

Typically here the branch addresses and branch pointers of the tree will be set. It is normally not necessary to make changes to the generated code, but the routine can be extended by the user if needed. Init() will be called many times when running on PROOF (once per file to be processed).

Reimplemented from TSelector.

Definition at line 129 of file TSelectorEntries.cxx.

◆ Notify()

Bool_t TSelectorEntries::Notify ( )

virtual

This function is called at the first entry of a new tree in a chain.

Reimplemented from TSelector.

Definition at line 136 of file TSelectorEntries.cxx.

◆ Process()

Bool_t TSelectorEntries::Process ( Long64_t entry )

virtual

The Process() function is called for each entry in the tree (or possibly keyed object in the case of PROOF) to be processed.

The entry argument specifies which entry in the currently loaded tree is to be processed. It can be passed to either TSelectorEntries::GetEntry() or TBranch::GetEntry() to read either all or the required parts of the data. When processing keyed objects with PROOF, the object is already loaded and is available via the fObject pointer.

This function should contain the "body" of the analysis. It can contain simple or elaborate selection criteria, run algorithms on the data of the event and typically fill histograms.

The processing can be stopped by calling Abort().

Use fStatus to set the return value of TTree::Process().

The return value is currently not used.

Reimplemented from TSelector.

Definition at line 161 of file TSelectorEntries.cxx.

◆ SetObject()

virtual void TSelectorEntries::SetObject ( TObject * obj )

inlinevirtual

Reimplemented from TSelector.

Definition at line 54 of file TSelectorEntries.h.

◆ SetOption()

virtual void TSelectorEntries::SetOption ( const char * option )

inlinevirtual

Reimplemented from TSelector.

Definition at line 53 of file TSelectorEntries.h.

◆ SetSelection()

void TSelectorEntries::SetSelection ( const char * selection )

virtual

Set the selection expression.

Definition at line 198 of file TSelectorEntries.cxx.

◆ SlaveBegin()

void TSelectorEntries::SlaveBegin ( TTree * tree )

virtual

The SlaveBegin() function is called after the Begin() function.

When running with PROOF SlaveBegin() is called on each slave server. The tree argument is deprecated (on PROOF 0 is passed).

Reimplemented from TSelector.

Definition at line 92 of file TSelectorEntries.cxx.

◆ SlaveTerminate()

void TSelectorEntries::SlaveTerminate ( void )

virtual

The SlaveTerminate() function is called after all entries or objects have been processed.

When running with PROOF SlaveTerminate() is called on each slave server.

Reimplemented from TSelector.

Definition at line 217 of file TSelectorEntries.cxx.

◆ Terminate()

void TSelectorEntries::Terminate ( void )

virtual

The Terminate() function is the last function to be called during a query.

It always runs on the client, it can be used to present the results graphically or save the results to file.

Reimplemented from TSelector.

Definition at line 227 of file TSelectorEntries.cxx.

◆ Version()

virtual Int_t TSelectorEntries::Version ( ) const

inlinevirtual

Reimplemented from TSelector.

Definition at line 45 of file TSelectorEntries.h.

Member Data Documentation

◆ fChain

TTree* TSelectorEntries::fChain

Definition at line 37 of file TSelectorEntries.h.

◆ fOwnInput

Bool_t TSelectorEntries::fOwnInput

private

Definition at line 35 of file TSelectorEntries.h.

◆ fSelect

TTreeFormula* TSelectorEntries::fSelect

pointer to the analyzed TTree or TChain

Definition at line 38 of file TSelectorEntries.h.

◆ fSelectedRows

Long64_t TSelectorEntries::fSelectedRows

Definition at line 39 of file TSelectorEntries.h.

◆ fSelectMultiple

Bool_t TSelectorEntries::fSelectMultiple

Definition at line 40 of file TSelectorEntries.h.

Libraries for TSelectorEntries:

[legend]

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

tree/treeplayer/inc/TSelectorEntries.h
tree/treeplayer/src/TSelectorEntries.cxx

Public Member Functions

Public Attributes

Private Attributes

Additional Inherited Members

Constructor & Destructor Documentation

◆ TSelectorEntries() [1/2]

◆ TSelectorEntries() [2/2]

◆ ~TSelectorEntries()

Member Function Documentation

◆ Begin()

◆ GetEntry()

◆ GetOutputList()

◆ GetSelectedRows()

◆ Init()

◆ Notify()

◆ Process()

◆ SetObject()

◆ SetOption()

◆ SetSelection()

◆ SlaveBegin()

◆ SlaveTerminate()

◆ Terminate()

◆ Version()

Member Data Documentation

◆ fChain

◆ fOwnInput

◆ fSelect

◆ fSelectedRows

◆ fSelectMultiple