A list of entries and subentries in a TTree or TChain.

TEntryListArray is an extension of TEntryList, used to hold selected entries and subentries (sublists) for when the user has a TTree with containers (vectors, arrays, ...).

Usage with TTree::Draw to select entries and subentries

To fill a list elist

tree->Draw(">> elist", "x > 0", "entrylistarray");`

To use a list to select entries and subentries

tree->SetEntryList(elist);
tree->Draw("y");
tree->Draw("z");

Its main purpose is to improve the performance of a code that needs to apply complex cuts on TTree::Draw multiple times. After the first call above to TTree::Draw, a TEntryListArray is created and filled with the entries and the indices of the arrays that satisfied the selection cut (x > 0). In the subsequent calls to TTree::Draw, only these entries / subentries are used to fill histograms.

About the class

The class derives from TEntryList and can be used basically in the same way. This same class is used to keep entries and subentries, so there are two types of TEntryListArray's:

The ones that only hold subentries
- fEntry is set to the entry# for which the subentries correspond
- fSubLists must be 0
The ones that hold entries and eventually lists with subentries in fSubLists.
- fEntry = -1 for those
- If there are no sublists for a given entry, all the subentries will be used in the selection

Additions with respect to TEntryList

Data members:
- fSubLists: a container to hold the sublists
- fEntry: the entry number if the list is used to hold subentries
- fLastSubListQueried and fSubListIter: a pointer to the last sublist queried and an iterator to resume the loop from the last sublist queried (to speed up selection and insertion in TTree::Draw)
Public methods:
- Contains, Enter and Remove with subentry as argument
- GetSubListForEntry: to return the sublist corresponding to the given entry
Protected methods:
- AddEntriesAndSubLists: called by Add when adding two TEntryList arrays with sublists
- ConvertToTEntryListArray: convert TEntryList to TEntryListArray
- RemoveSubList: to remove the given sublist
- RemoveSubListForEntry: to remove the sublist corresponding to the given entry
- SetEntry: to get / set a sublist for the given entry

Definition at line 26 of file TEntryListArray.h.

Public Member Functions
	TEntryListArray ()
	Default c-tor.

	TEntryListArray (const char name, const char title)
	c-tor with name and title

	TEntryListArray (const char name, const char title, const char treename, const char filename)
	c-tor with name and title, which also sets the treename and the filename

	TEntryListArray (const char name, const char title, const TTree *tree)
	constructor with name and title, which also sets the tree

	TEntryListArray (const TEntryList &elist)
	c-tor, from TEntryList

	TEntryListArray (const TEntryListArray &elist)
	Copy c-tor.

	TEntryListArray (const TTree *tree)
	c-tor, which sets the tree

	~TEntryListArray () override
	d-tor

void	Add (const TEntryList *elist) override
	Add 2 entry lists.

virtual Int_t	Contains (Long64_t entry, TTree *tree, Long64_t subentry)

Int_t	Contains (Long64_t entry, TTree *tree=nullptr) override

bool	Enter (Long64_t entry, const char treename, const char filename) override

virtual bool	Enter (Long64_t entry, const char treename, const char filename, Long64_t subentry)

virtual bool	Enter (Long64_t entry, TTree *tree, Long64_t subentry)
	Add entry #entry (, #subentry) to the list.

bool	Enter (Long64_t entry, TTree *tree=nullptr) override
	Add entry #entry to the list.

virtual TEntryListArray *	GetSubListForEntry (Long64_t entry, TTree *tree=nullptr)
	Return the list holding the subentries for the given entry or 0.

virtual TList *	GetSubLists () const

TClass *	IsA () const override

void	Print (const Option_t *option="") const override
	Print this list.

virtual bool	Remove (Long64_t entry, TTree *tree, Long64_t subentry)
	Remove entry #entry (, #subentry) from the list.

bool	Remove (Long64_t entry, TTree *tree=nullptr) override
	Remove entry #entry from the list.

void	Reset () override
	Reset all entries and remove all sublists.

void	SetTree (const char treename, const char filename) override
	If a list for a tree with such name and filename exists, sets it as the current sublist If not, creates this list and sets it as the current sublist.

void	SetTree (const TTree *tree) override
	If a list for a tree with such name and filename exists, sets it as the current sublist If not, creates this list and sets it as the current sublist The name of the file, where the tree is, is taken as `tree->GetTree()->GetCurrentFile()->GetName()`, and then expanded either to the absolute path, or to full url.

void	Streamer (TBuffer &) override
	Custom streamer for class TEntryList to handle the different interpretation of fFileName between version 1 and >1 .

void	StreamerNVirtual (TBuffer &ClassDef_StreamerNVirtual_b)

void	Subtract (const TEntryList *elist) override
	Remove all the entries (and subentries) of this entry list that are contained in elist.

Public Member Functions inherited from TEntryList
	TEntryList ()
	default c-tor

	TEntryList (const char name, const char title)
	c-tor with name and title

	TEntryList (const char name, const char title, const char treename, const char filename)
	c-tor with name and title, which also sets the treename and the filename

	TEntryList (const char name, const char title, const TTree *tree)
	constructor with name and title, which also sets the tree

	TEntryList (const TEntryList &elist)
	copy c-tor

	TEntryList (const TTree *tree)
	c-tor, which sets the tree

	~TEntryList () override
	Destructor.

void	AddSubList (TEntryList *elist)
	Add a sub entry list to the current list.

virtual void	DirectoryAutoAdd (TDirectory *)
	Called by TKey and others to automatically add us to a directory when we are read from a file.

void	EnterRange (Long64_t start, Long64_t end, TTree *tree=nullptr, UInt_t step=1U)
	Enter all entries in a range in the TEntryList.

virtual TEntryList *	GetCurrentList () const

virtual TDirectory *	GetDirectory () const

virtual Long64_t	GetEntriesToProcess () const

virtual Long64_t	GetEntry (Long64_t index)
	Return the number of the entry #index of this TEntryList in the TTree or TChain See also Next().

virtual Long64_t	GetEntryAndTree (Long64_t index, Int_t &treenum)
	Return the index of "index"-th non-zero entry in the TTree or TChain and the # of the corresponding tree in the chain.

virtual TEntryList *	GetEntryList (const char treename, const char filename, Option_t *opt="")
	Return the entry list, corresponding to treename and filename By default, the filename is first tried as is, and then, if the corresponding list is not found, the filename is expanded to the absolute path, and compared again.

virtual const char *	GetFileName () const

virtual TList *	GetLists () const

virtual Long64_t	GetN () const

virtual bool	GetReapplyCut () const

virtual const char *	GetTreeName () const

virtual Int_t	GetTreeNumber () const

bool	IsValid () const

virtual Int_t	Merge (TCollection *list)
	Merge this list with the lists from the collection.

virtual Long64_t	Next ()
	Return the next non-zero entry index (next after fLastIndexQueried) this function is faster than GetEntry()

virtual void	OptimizeStorage ()
	Checks if the array representation is more economical and if so, switches to it.

void	Print (const Option_t *option="") const override
	Print this list.

virtual Int_t	RelocatePaths (const char newloc, const char oldloc=nullptr)
	Relocate the file paths.

virtual Int_t	ScanPaths (TList *roots, bool notify=true)
	Scan the paths to find the common roots.

virtual void	SetDirectory (TDirectory *dir)
	Add reference to directory dir. dir can be 0.

virtual void	SetEntriesToProcess (Long64_t nen)

virtual void	SetFileName (const char *filename)

virtual void	SetReapplyCut (bool apply=false)

virtual void	SetShift (bool shift)

virtual void	SetTreeName (const char *treename)

virtual void	SetTreeNumber (Int_t index)

void	StreamerNVirtual (TBuffer &ClassDef_StreamerNVirtual_b)

Public Member Functions inherited from TNamed
	TNamed ()

	TNamed (const char name, const char title)

	TNamed (const TNamed &named)
	TNamed copy ctor.

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

virtual	~TNamed ()
	TNamed destructor.

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

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

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

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

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

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

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

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

TClass *	IsA () const override

Bool_t	IsSortable () const override

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

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

void	Print (Option_t *option="") const override
	Print TNamed name and title.

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

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

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

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

void	Streamer (TBuffer &) override
	Stream an object of class TObject.

void	StreamerNVirtual (TBuffer &ClassDef_StreamerNVirtual_b)

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	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 with: `gROOT->SetSelectedPad(c1)`.

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=nullptr)
	Execute method on this object with the given parameter string, e.g.

virtual void	Execute (TMethod method, TObjArray params, Int_t *error=nullptr)
	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 char *	GetObjectInfo (Int_t px, Int_t py) const
	Returns string containing info about the object at position (px,py).

virtual Option_t *	GetOption () const

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.

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)

Bool_t	IsDestructed () const
	IsDestructed.

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

R__ALWAYS_INLINE 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).

virtual Bool_t	Notify ()
	This method must be overridden to handle object notification (the base implementation is no-op).

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 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.

void	StreamerNVirtual (TBuffer &ClassDef_StreamerNVirtual_b)

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=nullptr, Int_t option=0, Int_t bufsize=0)
	Write this object to the current directory.

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

Static Public Member Functions
static TClass *	Class ()

static const char *	Class_Name ()

static constexpr Version_t	Class_Version ()

static const char *	DeclFileName ()

Static Public Member Functions inherited from TEntryList
static TClass *	Class ()

static const char *	Class_Name ()

static constexpr Version_t	Class_Version ()

static const char *	DeclFileName ()

static Int_t	Relocate (const char fn, const char newroot, const char oldroot=nullptr, const char enlnm=nullptr)
	Relocate entry list 'enlnm' in file 'fn' replacing 'oldroot' with 'newroot' in filenames.

static Int_t	Scan (const char fn, TList roots)
	Scan TEntryList in 'fn' to find the common parts of paths.

Static Public Member Functions inherited from TNamed
static TClass *	Class ()

static const char *	Class_Name ()

static constexpr Version_t	Class_Version ()

static const char *	DeclFileName ()

Static Public Member Functions inherited from TObject
static TClass *	Class ()

static const char *	Class_Name ()

static constexpr Version_t	Class_Version ()

static const char *	DeclFileName ()

static Longptr_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 Member Functions
virtual void	AddEntriesAndSubLists (const TEntryList *elist)
	The method that really adds two entry lists with sublists If lists are split (fLists != 0), look for the ones whose trees match and call the method for those lists.

virtual void	ConvertToTEntryListArray (TEntryList *e)
	Create a TEntryListArray based on the given TEntryList Called by SetTree when the given list is added to fLists Replace it by a TEntryListArray and delete the given list.

void	Init ()
	Initialize data members, called by Reset.

virtual bool	RemoveSubList (TEntryListArray e, TTree tree=nullptr)
	Remove the given sublist and return true if succeeded.

virtual bool	RemoveSubListForEntry (Long64_t entry, TTree *tree=nullptr)
	Remove the sublists for the given entry --> not being used...

virtual TEntryListArray *	SetEntry (Long64_t entry, TTree *tree=nullptr)
	Create a sublist for the given entry and returns it --> should be called after calling GetSubListForEntry.

Protected Member Functions inherited from TEntryList
void	GetFileName (const char filename, TString &fn, bool =nullptr)
	To be able to re-localize the entry-list we identify the file by just the name and the anchor, i.e.

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
Long64_t	fEntry
	the entry number, when the list is used for subentries

TEntryListArray *	fLastSubListQueried
	! last sublist checked by GetSubListForEntry

TIter *	fSubListIter
	! to iterate over fSubLists and keep last one checked

TList *	fSubLists
	a list of underlying entry lists for each event of a TEntryList

Protected Attributes inherited from TEntryList
TObjArray *	fBlocks
	blocks with indices of passing events (TEntryListBlocks)

TEntryList *	fCurrent
	! currently filled entry list

TDirectory *	fDirectory
	! Pointer to directory holding this tree

Long64_t	fEntriesToProcess
	used on proof to set the number of entries to process in a packet

TString	fFileName
	name of the file, where the tree is

Long64_t	fLastIndexQueried
	! used to optimize GetEntry() function from a loop

Long64_t	fLastIndexReturned
	! used to optimize GetEntry() function from a loop

TList *	fLists
	a list of underlying entry lists for each tree of a chain

Long64_t	fN
	number of entries in the list

Int_t	fNBlocks
	number of TEntryListBlocks

bool	fReapply
	If true, TTree::Draw will 'reapply' the original cut.

bool	fShift
	! true when some sub-lists don't correspond to trees (when the entry list is used as input in TChain)

ULong_t	fStringHash
	! Hash value of a string of treename and filename

TString	fTreeName
	name of the tree

Int_t	fTreeNumber
	! the index of the tree in the chain (used when the entry list is used as input (TTree::SetEntryList())

Protected Attributes inherited from TNamed
TString	fName

TString	fTitle

Private Member Functions
TEntryListArray &	operator= (const TEntryListArray &)

Additional Inherited Members
Public Types inherited from TEntryList
enum	{ kBlockSize = 64000 }

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

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

enum	EDeprecatedStatusBits { kObjInCanvas = (1ULL << ( 3 )) }

enum	EStatusBits { kCanDelete = (1ULL << ( 0 )) , kMustCleanup = (1ULL << ( 3 )) , kIsReferenced = (1ULL << ( 4 )) , kHasUUID = (1ULL << ( 5 )) , kCannotPick = (1ULL << ( 6 )) , kNoContextMenu = (1ULL << ( 8 )) , kInvalidObject = (1ULL << ( 13 )) }

Protected Types inherited from TObject
enum	{ kOnlyPrepStep = (1ULL << ( 3 )) }

#include <TEntryListArray.h>

Inheritance diagram for TEntryListArray:

[legend]

Constructor & Destructor Documentation

◆ TEntryListArray() [1/7]

TEntryListArray::TEntryListArray ( )

Default c-tor.

Definition at line 93 of file TEntryListArray.cxx.

◆ TEntryListArray() [2/7]

TEntryListArray::TEntryListArray	(	const char *	name,
		const char *	title
	)

c-tor with name and title

Definition at line 100 of file TEntryListArray.cxx.

◆ TEntryListArray() [3/7]

TEntryListArray::TEntryListArray	(	const char *	name,
		const char *	title,
		const TTree *	tree
	)

constructor with name and title, which also sets the tree

Definition at line 107 of file TEntryListArray.cxx.

◆ TEntryListArray() [4/7]

TEntryListArray::TEntryListArray	(	const char *	name,
		const char *	title,
		const char *	treename,
		const char *	filename
	)

c-tor with name and title, which also sets the treename and the filename

Definition at line 114 of file TEntryListArray.cxx.

◆ TEntryListArray() [5/7]

TEntryListArray::TEntryListArray ( const TTree * tree )

c-tor, which sets the tree

Definition at line 121 of file TEntryListArray.cxx.

◆ TEntryListArray() [6/7]

TEntryListArray::TEntryListArray ( const TEntryListArray & elist )

Copy c-tor.

Definition at line 128 of file TEntryListArray.cxx.

◆ TEntryListArray() [7/7]

TEntryListArray::TEntryListArray ( const TEntryList & elist )

c-tor, from TEntryList

Definition at line 137 of file TEntryListArray.cxx.

◆ ~TEntryListArray()

TEntryListArray::~TEntryListArray ( )

override

d-tor

Definition at line 144 of file TEntryListArray.cxx.

Member Function Documentation

◆ Add()

void TEntryListArray::Add ( const TEntryList * elist )

overridevirtual

Add 2 entry lists.

Reimplemented from TEntryList.

Definition at line 158 of file TEntryListArray.cxx.

◆ AddEntriesAndSubLists()

void TEntryListArray::AddEntriesAndSubLists ( const TEntryList * elist )

protectedvirtual

The method that really adds two entry lists with sublists If lists are split (fLists != 0), look for the ones whose trees match and call the method for those lists.

Add first the sublists, and then use TEntryList::Add to deal with the entries

Definition at line 187 of file TEntryListArray.cxx.

◆ Class()

static TClass * TEntryListArray::Class ( )

static

Returns: TClass describing this class

◆ Class_Name()

static const char * TEntryListArray::Class_Name ( )

static

Returns: Name of this class

◆ Class_Version()

static constexpr Version_t TEntryListArray::Class_Version ( )

inlinestaticconstexpr

Returns: Version of this class

Definition at line 90 of file TEntryListArray.h.

◆ Contains() [1/2]

Int_t TEntryListArray::Contains	(	Long64_t	entry,
		TTree *	tree,
		Long64_t	subentry
	)

virtual

When tree = 0, returns from the current list
When tree != 0, finds the list corresponding to this tree
When tree is a chain, the entry is assumed to be global index and the local

entry is recomputed from the treeoffset information of the chain When subentry != -1, return true if the enter is present and not split or if the subentry list is found and contains #subentry

Definition at line 269 of file TEntryListArray.cxx.

◆ Contains() [2/2]

Int_t TEntryListArray::Contains	(	Long64_t	entry,
		TTree *	tree = `nullptr`
	)

inlineoverridevirtual

When tree = 0, returns from the current list
When tree != 0, finds the list, corresponding to this tree
When tree is a chain, the entry is assumed to be global index and the local entry is recomputed from the treeoffset information of the chain

Reimplemented from TEntryList.

Definition at line 60 of file TEntryListArray.h.

◆ ConvertToTEntryListArray()

void TEntryListArray::ConvertToTEntryListArray ( TEntryList * e )

protectedvirtual

Create a TEntryListArray based on the given TEntryList Called by SetTree when the given list is added to fLists Replace it by a TEntryListArray and delete the given list.

Definition at line 298 of file TEntryListArray.cxx.

◆ DeclFileName()

static const char * TEntryListArray::DeclFileName ( )

inlinestatic

Returns: Name of the file containing the class declaration

Definition at line 90 of file TEntryListArray.h.

◆ Enter() [1/4]

bool TEntryListArray::Enter	(	Long64_t	entry,
		const char *	treename,
		const char *	filename
	)

inlineoverridevirtual

Reimplemented from TEntryList.

Definition at line 68 of file TEntryListArray.h.

◆ Enter() [2/4]

bool TEntryListArray::Enter	(	Long64_t	entry,
		const char *	treename,
		const char *	filename,
		Long64_t	subentry
	)

virtual

Definition at line 385 of file TEntryListArray.cxx.

◆ Enter() [3/4]

bool TEntryListArray::Enter	(	Long64_t	entry,
		TTree *	tree,
		Long64_t	subentry
	)

virtual

Add entry #entry (, #subentry) to the list.

When tree = 0, adds to the current list
When tree != 0, finds the list corresponding to this tree (or add a new one)
When tree is a chain, the entry is assumed to be global index and the local entry is recomputed from the treeoffset information of the chain

Definition at line 339 of file TEntryListArray.cxx.

◆ Enter() [4/4]

bool TEntryListArray::Enter	(	Long64_t	entry,
		TTree *	tree = `nullptr`
	)

inlineoverridevirtual

Add entry #entry to the list.

When tree = 0, adds to the current list
When tree != 0, finds the list, corresponding to this tree
When tree is a chain, the entry is assumed to be global index and the local entry is recomputed from the treeoffset information of the chain

Reimplemented from TEntryList.

Definition at line 65 of file TEntryListArray.h.

◆ GetSubListForEntry()

TEntryListArray * TEntryListArray::GetSubListForEntry	(	Long64_t	entry,
		TTree *	tree = `nullptr`
	)

virtual

Return the list holding the subentries for the given entry or 0.

Definition at line 401 of file TEntryListArray.cxx.

◆ GetSubLists()

virtual TList * TEntryListArray::GetSubLists ( ) const

inlinevirtual

Definition at line 86 of file TEntryListArray.h.

◆ Init()

void TEntryListArray::Init ( )

protected

Initialize data members, called by Reset.

Definition at line 82 of file TEntryListArray.cxx.

◆ IsA()

TClass * TEntryListArray::IsA ( ) const

inlineoverridevirtual

Returns: TClass describing current object

Reimplemented from TEntryList.

Definition at line 90 of file TEntryListArray.h.

◆ operator=()

TEntryListArray & TEntryListArray::operator= ( const TEntryListArray & )

private

◆ Print()

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

override

Print this list.

option = "" - default - print the name of the tree and file
option = "all" - print all the entry numbers
option = "subentries" - print all the entry numbers and associated subentries

Definition at line 453 of file TEntryListArray.cxx.

◆ Remove() [1/2]

bool TEntryListArray::Remove	(	Long64_t	entry,
		TTree *	tree,
		Long64_t	subentry
	)

virtual

Remove entry #entry (, #subentry) from the list.

When tree = 0, removes from the current list
When tree != 0, finds the list, corresponding to this tree
When tree is a chain, the entry is assumed to be global index and the local entry is recomputed from the treeoffset information of the chain

If subentry != -1, only the given subentry is removed

Definition at line 503 of file TEntryListArray.cxx.

◆ Remove() [2/2]

bool TEntryListArray::Remove	(	Long64_t	entry,
		TTree *	tree = `nullptr`
	)

inlineoverridevirtual

Remove entry #entry from the list.

When tree = 0, removes from the current list
When tree != 0, finds the list, corresponding to this tree
When tree is a chain, the entry is assumed to be global index and the local entry is recomputed from the treeoffset information of the chain

Reimplemented from TEntryList.

Definition at line 76 of file TEntryListArray.h.

◆ RemoveSubList()

bool TEntryListArray::RemoveSubList	(	TEntryListArray *	e,
		TTree *	tree = `nullptr`
	)

protectedvirtual

Remove the given sublist and return true if succeeded.

Definition at line 546 of file TEntryListArray.cxx.

◆ RemoveSubListForEntry()

bool TEntryListArray::RemoveSubListForEntry	(	Long64_t	entry,
		TTree *	tree = `nullptr`
	)

protectedvirtual

Remove the sublists for the given entry --> not being used...

Definition at line 572 of file TEntryListArray.cxx.

◆ Reset()

void TEntryListArray::Reset ( )

overridevirtual

Reset all entries and remove all sublists.

Reimplemented from TEntryList.

Definition at line 588 of file TEntryListArray.cxx.

◆ SetEntry()

TEntryListArray * TEntryListArray::SetEntry	(	Long64_t	entry,
		TTree *	tree = `nullptr`
	)

protectedvirtual

Create a sublist for the given entry and returns it --> should be called after calling GetSubListForEntry.

Definition at line 605 of file TEntryListArray.cxx.

◆ SetTree() [1/2]

void TEntryListArray::SetTree	(	const char *	treename,
		const char *	filename
	)

overridevirtual

If a list for a tree with such name and filename exists, sets it as the current sublist If not, creates this list and sets it as the current sublist.

Reimplemented from TEntryList.

Definition at line 709 of file TEntryListArray.cxx.

◆ SetTree() [2/2]

void TEntryListArray::SetTree ( const TTree * tree )

inlineoverridevirtual

If a list for a tree with such name and filename exists, sets it as the current sublist If not, creates this list and sets it as the current sublist The name of the file, where the tree is, is taken as tree->GetTree()->GetCurrentFile()->GetName(), and then expanded either to the absolute path, or to full url.

If, for some reason, you want to provide the filename in a different format, use SetTree(const char *treename, const char *filename), where the filename is taken "as is".

Reimplemented from TEntryList.

Definition at line 82 of file TEntryListArray.h.

◆ Streamer()

void TEntryListArray::Streamer ( TBuffer & b )

overridevirtual

Custom streamer for class TEntryList to handle the different interpretation of fFileName between version 1 and >1 .

Reimplemented from TEntryList.

◆ StreamerNVirtual()

void TEntryListArray::StreamerNVirtual ( TBuffer & ClassDef_StreamerNVirtual_b )

inline

Definition at line 90 of file TEntryListArray.h.

◆ Subtract()

void TEntryListArray::Subtract ( const TEntryList * elist )

overridevirtual

Remove all the entries (and subentries) of this entry list that are contained in elist.

If for a given entry present in both lists, one has subentries and the other does not, the whole entry is removed

Reimplemented from TEntryList.

Definition at line 641 of file TEntryListArray.cxx.

Member Data Documentation

◆ fEntry

Long64_t TEntryListArray::fEntry

protected

the entry number, when the list is used for subentries

Definition at line 33 of file TEntryListArray.h.

◆ fLastSubListQueried

TEntryListArray* TEntryListArray::fLastSubListQueried

protected

! last sublist checked by GetSubListForEntry

Definition at line 34 of file TEntryListArray.h.

◆ fSubListIter

TIter* TEntryListArray::fSubListIter

protected

! to iterate over fSubLists and keep last one checked

Definition at line 35 of file TEntryListArray.h.

◆ fSubLists

TList* TEntryListArray::fSubLists

protected

a list of underlying entry lists for each event of a TEntryList

Definition at line 32 of file TEntryListArray.h.

Libraries for TEntryListArray:

[legend]

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

tree/tree/inc/TEntryListArray.h
tree/tree/src/TEntryListArray.cxx

Usage with TTree::Draw to select entries and subentries

To fill a list elist

To use a list to select entries and subentries

About the class

Additions with respect to TEntryList

Public Member Functions

Static Public Member Functions

Protected Member Functions

Protected Attributes

Private Member Functions

Additional Inherited Members

Constructor & Destructor Documentation

◆ TEntryListArray() [1/7]

◆ TEntryListArray() [2/7]

◆ TEntryListArray() [3/7]

◆ TEntryListArray() [4/7]

◆ TEntryListArray() [5/7]

◆ TEntryListArray() [6/7]

◆ TEntryListArray() [7/7]

◆ ~TEntryListArray()

Member Function Documentation

◆ Add()

◆ AddEntriesAndSubLists()

◆ Class()

◆ Class_Name()

◆ Class_Version()

◆ Contains() [1/2]

◆ Contains() [2/2]

◆ ConvertToTEntryListArray()

◆ DeclFileName()

◆ Enter() [1/4]

◆ Enter() [2/4]

◆ Enter() [3/4]

◆ Enter() [4/4]

◆ GetSubListForEntry()

◆ GetSubLists()

◆ Init()

◆ IsA()

◆ operator=()

◆ Print()

◆ Remove() [1/2]

◆ Remove() [2/2]

◆ RemoveSubList()

◆ RemoveSubListForEntry()

◆ Reset()

◆ SetEntry()

◆ SetTree() [1/2]

◆ SetTree() [2/2]

◆ Streamer()

◆ StreamerNVirtual()

◆ Subtract()

Member Data Documentation

◆ fEntry

◆ fLastSubListQueried

◆ fSubListIter

◆ fSubLists